The following tables present IEM computed monthly data summaries based on
daily data provided by or computed for the IEM. A download interface
exists for the daily summary information. The climatology is provided by the
nearest NCEI climate station (USW00024283) within the current 1991-2020
dataset.
To load shown data into Microsoft Excel,
highlight the table information with your mouse and then copy/paste into Excel.
Precipitation Totals [inch]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1949
M
M
M
M
M
M
M
M
M
M
M
0.00
1950
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1951
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1952
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1953
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1954
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1955
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1956
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1957
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1958
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1959
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1960
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1961
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1962
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1963
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1964
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1965
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1966
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1967
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1968
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1969
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1970
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1971
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1972
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1973
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1974
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1975
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1976
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1977
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1978
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1979
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1980
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1981
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1982
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1983
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1984
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1985
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1986
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1987
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1988
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1989
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1990
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1991
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1992
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1993
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1994
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1995
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1996
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1997
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1998
0.69
0.00
0.00
0.00
0.00
1.42
0.00
0.00
0.00
0.00
0.00
0.00
1999
0.00
0.00
0.00
0.00
2.02
0.00
0.00
0.00
0.00
0.00
0.01
0.00
2000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2001
0.00
4.28
2.24
3.09
1.05
1.01
0.22
0.36
0.41
1.74
9.50
11.12
2002
7.50
6.97
4.64
3.06
0.70
0.83
0.07
0.04
0.19
0.06
2.32
22.77
2003
7.66
3.81
5.63
12.66
1.34
0.11
0.04
0.66
0.54
0.56
6.08
12.91
2004
6.72
9.06
2.60
2.09
1.14
0.07
0.11
0.70
0.63
4.90
1.68
8.83
2005
5.50
2.13
6.11
6.50
4.62
4.12
0.10
0.14
0.16
3.43
9.24
13.54
2006
11.80
6.00
10.16
4.55
1.49
0.53
0.08
0.11
0.24
0.69
9.14
9.99
2007
2.63
13.11
3.66
3.71
0.95
0.67
0.86
0.12
1.03
5.73
3.23
7.72
2008
89.29
3.60
4.33
2.36
0.09
0.43
0.09
0.82
0.19
0.81
5.02
9.89
2009
2.06
6.78
6.78
1.38
3.86
0.31
0.19
0.14
0.63
2.45
4.34
5.08
2010
10.49
5.38
6.76
8.36
3.58
3.46
0.10
0.21
2.00
5.29
6.35
12.38
2011
2.60
4.61
12.55
5.07
1.71
1.31
0.25
0.11
0.51
5.30
4.71
3.44
2012
9.22
2.68
12.71
5.71
1.09
2.41
0.87
0.13
0.19
3.66
7.12
11.11
2013
3.04
2.08
3.51
2.26
1.91
0.81
0.03
0.14
4.43
0.18
1.73
0.80
2014
2.16
7.90
8.85
1.84
1.05
0.73
0.00
0.00
3.23
5.74
5.11
9.98
2015
2.07
5.81
3.78
2.39
0.12
0.07
0.14
0.51
0.59
1.10
5.30
18.77
2016
12.30
2.93
10.48
3.27
0.64
0.11
0.59
0.02
0.00
12.03
7.20
8.22
2017
11.03
14.24
10.09
5.32
1.26
0.68
0.01
0.01
0.73
1.81
8.55
2.31
2018
9.11
2.97
8.35
5.34
0.97
0.48
0.02
0.02
0.32
0.89
5.59
5.39
2019
8.39
16.17
5.41
3.64
3.11
0.00
0.02
0.46
3.21
2.08
2.05
7.88
2020
9.27
1.01
2.80
2.11
5.66
0.53
0.00
0.01
0.77
0.60
3.28
5.13
2021
6.81
6.15
4.29
0.67
0.33
1.93
0.11
0.01
1.68
5.40
3.81
6.74
2022
2.92
0.41
2.18
5.08
2.64
2.73
0.60
0.00
0.52
0.21
6.47
10.49
2023
6.39
6.47
9.56
3.42
1.15
0.09
0.01
0.07
2.63
3.16
4.08
8.47
2024
13.36
9.33
9.78
1.43
3.41
1.22
0.01
1.58
0.13
2.15
11.55
11.33
2025
4.81
8.45
11.43
1.98
0.83
0.04
0.04
0.06
2.15
3.10
5.66
9.58
2026
4.05
8.96
0.46
3.99
0.43
1.15
0.03
0.00
M
M
M
M
NCEI Climatology
7.52
6.72
6.28
4.11
2.10
0.96
0.19
0.26
0.85
2.71
5.71
8.95
Average Wind Speed [MPH]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1949
M
M
M
M
M
M
M
M
M
M
M
6.4
1950
9.1
7.2
7.8
9.4
8.8
7.3
6.4
5.4
4.9
6.8
6.4
6.4
1951
8.2
5.3
8.5
5.7
7.1
6.5
5.9
4.7
4.4
5.5
6.7
8.3
1952
8.2
6.7
9.3
8.2
8.4
7.3
5.1
5.9
3.5
3.1
5.9
9.2
1953
7.7
8.8
9.8
8.1
8.9
9.3
5.8
6.0
4.2
5.9
7.6
6.5
1954
8.3
7.0
7.3
7.7
9.0
8.9
8.8
7.0
7.7
7.0
8.6
9.4
1955
6.9
6.8
7.7
8.0
10.7
7.5
6.9
4.2
4.6
3.2
5.9
7.2
1956
8.1
8.1
6.4
6.4
5.6
6.7
4.9
5.1
3.9
5.4
3.8
3.4
1957
6.8
4.6
6.2
7.1
6.5
6.5
5.3
3.7
3.3
5.1
4.6
5.4
1958
5.9
10.0
9.3
9.4
6.4
6.9
5.5
5.4
6.8
5.2
5.3
5.0
1959
9.2
9.1
7.4
7.2
8.5
8.2
6.2
5.6
6.7
4.9
4.2
5.4
1960
7.1
7.9
6.8
6.7
7.8
6.1
4.8
5.5
4.5
5.3
8.2
6.6
1961
6.2
8.3
9.4
8.7
7.7
6.7
5.9
4.7
6.1
5.9
6.4
5.6
1962
5.7
8.5
7.8
7.1
8.3
7.0
6.4
5.0
4.4
5.6
5.3
4.7
1963
6.4
8.6
10.6
11.2
9.8
10.3
9.0
8.0
7.2
8.4
9.6
7.3
1964
9.6
9.1
9.0
10.5
9.4
6.8
5.6
5.4
5.1
3.1
5.7
8.1
1965
6.0
5.5
4.4
7.5
7.7
5.1
4.3
3.6
3.9
2.8
6.1
5.4
1966
6.6
7.0
7.1
7.1
7.2
6.7
5.5
3.5
3.7
3.5
5.9
5.4
1967
4.7
3.0
7.3
6.2
6.2
5.3
2.9
1.7
1.5
3.1
2.7
8.3
1968
9.0
7.0
10.7
9.1
8.1
8.1
6.1
5.3
4.6
5.4
6.2
8.6
1969
6.6
10.8
8.9
9.6
7.5
5.8
6.6
4.8
3.9
4.1
3.2
5.8
1970
7.5
3.5
5.3
7.1
7.2
6.9
6.4
5.4
6.9
6.1
7.4
8.3
1971
7.9
6.8
8.5
8.9
8.9
8.0
6.4
6.2
6.0
6.1
7.1
7.6
1972
6.9
6.6
5.9
8.2
5.6
6.0
6.9
6.6
5.9
5.6
7.7
8.6
1973
8.8
7.2
6.9
8.2
7.6
7.6
6.5
4.2
4.1
3.6
9.2
5.9
1974
7.3
6.8
6.5
8.2
8.7
4.7
4.6
5.9
4.4
4.1
4.2
4.4
1975
4.2
7.0
8.4
7.8
8.7
7.8
5.9
5.7
5.3
7.7
8.3
6.6
1976
6.2
6.8
5.8
6.4
6.1
5.5
5.6
6.3
5.7
5.2
4.7
5.1
1977
5.2
5.8
8.3
7.2
4.9
7.0
7.0
6.2
6.3
5.1
6.5
7.5
1978
7.8
7.4
6.7
8.5
7.6
5.9
5.7
5.1
5.3
3.0
4.1
5.1
1979
6.7
7.9
5.8
6.7
7.7
6.8
5.9
5.2
5.2
4.7
4.8
6.0
1980
5.7
5.9
8.6
7.5
7.5
6.5
5.4
5.6
5.4
4.9
5.6
5.8
1981
7.3
6.5
7.9
8.1
8.2
8.6
6.7
6.3
6.5
6.6
7.0
7.5
1982
7.2
7.2
8.3
9.4
8.9
6.3
6.6
5.4
5.4
5.9
6.6
8.0
1983
6.6
9.6
8.6
7.2
7.1
7.0
6.6
4.9
4.7
4.0
8.3
6.3
1984
4.2
7.1
7.4
9.0
8.2
7.4
5.1
5.0
5.5
5.6
7.7
4.2
1985
4.4
5.9
7.3
6.3
7.2
6.2
5.6
6.4
5.1
5.7
5.3
5.0
1986
7.1
8.2
7.2
7.8
7.2
6.4
7.2
5.0
6.5
4.3
5.3
5.6
1987
7.4
7.7
8.8
6.2
7.1
6.9
7.0
5.3
4.4
3.7
5.6
8.6
1988
6.6
5.1
6.5
6.2
7.2
7.0
6.0
5.2
5.0
3.7
6.9
5.5
1989
5.1
5.9
8.1
5.4
7.4
5.4
6.3
5.0
4.3
5.3
4.1
4.2
1990
6.9
5.5
5.6
6.0
7.2
5.9
5.3
5.1
4.9
6.1
5.3
6.2
1991
5.8
5.4
8.8
7.4
7.7
7.3
4.9
3.3
3.4
5.0
4.5
5.1
1992
6.4
7.4
5.7
6.2
6.5
7.0
6.5
6.0
6.5
6.0
6.2
8.2
1993
7.3
7.8
6.8
8.0
7.9
8.1
7.7
6.2
5.4
4.8
6.7
7.8
1994
6.3
7.2
6.8
7.9
7.6
8.4
6.8
8.0
5.8
6.7
7.5
7.5
1995
10.0
5.7
8.8
7.9
8.3
6.9
6.6
7.0
5.6
6.1
5.5
7.6
1996
7.1
7.8
8.0
7.8
8.8
7.7
6.5
6.7
6.5
6.3
6.5
9.2
1997
7.3
7.9
8.2
7.8
6.6
8.7
7.6
6.3
7.2
7.0
7.4
7.5
1998
8.9
10.8
7.9
8.3
6.9
7.4
6.6
5.8
5.9
6.8
7.9
7.4
1999
7.9
9.5
8.4
9.5
8.8
8.7
7.5
6.5
6.0
5.6
8.0
6.0
2000
7.7
7.9
8.2
6.6
7.8
6.8
7.4
6.7
5.9
6.0
5.9
6.0
2001
7.6
7.9
6.4
6.5
7.0
7.4
5.9
5.2
4.5
4.0
6.9
7.4
2002
6.9
5.8
6.6
6.4
7.4
7.1
5.8
4.8
4.4
4.4
5.1
8.5
2003
5.2
5.6
7.0
7.5
7.3
6.3
5.9
5.1
4.5
4.4
5.7
6.9
2004
6.0
7.5
5.8
6.4
7.2
6.9
5.4
4.8
5.7
5.2
4.6
5.9
2005
5.2
4.6
6.8
6.2
5.5
6.5
5.4
4.7
4.3
4.5
4.9
7.3
2006
7.2
6.1
9.2
6.7
6.2
5.7
5.1
4.6
3.8
3.1
5.0
6.6
2007
4.1
5.7
4.9
6.3
6.0
6.5
5.2
4.5
4.6
4.6
3.8
6.0
2008
6.6
5.3
5.8
5.9
7.1
6.6
4.6
5.1
3.6
4.9
4.1
5.1
2009
3.5
6.0
6.9
6.1
6.2
5.6
4.8
4.8
3.9
4.4
5.0
4.4
2010
6.1
5.4
6.0
7.8
5.9
7.1
5.1
4.5
3.6
5.0
5.5
7.6
2011
3.9
6.2
8.0
6.8
6.5
6.7
5.2
4.5
4.1
4.0
5.0
3.6
2012
5.1
5.7
8.5
5.2
6.3
6.2
5.2
4.2
3.3
4.0
5.7
6.5
2013
3.1
4.5
5.1
7.3
6.1
5.6
4.9
4.2
5.2
3.9
4.0
3.9
2014
3.3
5.8
7.0
5.4
6.6
6.7
5.7
5.1
4.7
5.2
4.5
6.9
2015
3.7
6.2
5.0
6.5
6.3
5.5
5.3
4.7
4.8
3.8
5.1
7.7
2016
7.1
4.3
7.7
6.4
6.0
6.2
5.4
4.5
5.0
6.4
6.0
5.0
2017
6.9
8.1
6.5
7.8
7.3
6.4
5.5
4.3
4.3
5.0
5.9
4.0
2018
5.4
5.6
6.6
6.6
6.3
6.9
5.1
5.1
4.7
3.9
4.8
5.8
2019
6.0
7.3
5.3
6.9
6.4
6.3
6.1
4.6
4.7
4.4
4.1
5.7
2020
6.1
5.1
5.9
5.7
6.2
5.9
5.6
4.5
3.5
3.6
4.8
4.5
2021
6.0
6.1
7.2
5.6
6.8
5.2
5.2
4.9
4.0
5.5
4.4
6.0
2022
4.6
5.5
5.9
7.8
7.5
6.0
4.7
4.7
3.9
3.4
4.4
5.9
2023
8.4
6.0
7.2
5.8
6.2
5.9
5.8
4.8
5.2
4.1
4.4
5.3
2024
6.6
6.3
7.5
6.5
6.9
6.2
4.7
4.8
4.1
3.9
6.5
6.0
2025
5.0
6.0
7.0
6.7
7.0
6.6
5.3
4.8
4.5
4.4
5.1
4.3
2026
4.5
5.2
5.4
5.6
6.5
6.6
6.0
6.7
M
M
M
M
NCEI Climatology
M
M
M
M
M
M
M
M
M
M
M
M
Average Daily High Temperature [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1949
M
M
M
M
M
M
M
M
M
M
M
52.03
1950
47.61
53.64
53.84
56.10
56.71
59.10
61.55
60.58
59.23
61.97
60.63
58.16
1951
51.45
53.82
51.23
51.87
57.03
56.33
58.26
58.48
58.80
60.29
56.73
52.03
1952
49.65
51.72
49.74
53.40
56.23
56.10
58.58
58.71
60.27
59.03
57.37
53.00
1953
54.94
52.21
52.87
53.23
56.94
58.83
58.65
62.19
62.27
61.61
57.90
54.81
1954
52.81
54.93
53.29
56.13
56.19
58.67
59.39
60.19
62.73
61.87
59.33
54.87
1955
50.19
50.11
52.10
51.90
54.10
58.23
58.65
56.42
60.57
57.26
54.83
55.52
1956
53.68
50.86
53.23
53.43
57.52
59.00
59.32
61.35
61.37
58.55
54.20
52.03
1957
48.84
53.54
53.84
55.33
58.48
60.47
60.58
60.87
64.30
62.10
57.80
55.06
1958
57.26
58.61
53.90
55.97
59.00
63.17
60.35
61.32
66.67
59.74
56.60
57.87
1959
54.39
52.96
54.68
55.23
56.52
59.90
59.58
59.94
61.82
61.04
57.97
54.87
1960
55.29
56.07
56.61
56.47
58.39
62.77
60.87
64.16
60.37
62.19
57.07
55.68
1961
57.71
56.04
55.13
56.13
57.81
62.17
62.94
63.26
65.33
60.32
56.33
52.10
1962
54.10
54.18
54.26
57.70
59.58
61.50
63.13
65.26
64.30
62.26
59.67
56.94
1963
54.68
62.71
56.77
57.93
61.19
62.50
65.00
63.61
66.33
64.19
59.23
56.71
1964
52.58
57.34
52.03
54.50
56.68
60.80
62.68
64.23
64.83
62.03
55.97
53.19
1965
52.26
51.50
54.81
55.30
55.58
57.90
60.13
63.71
60.43
61.52
60.37
53.03
1966
53.26
52.43
52.39
57.47
57.55
63.40
62.87
62.48
65.57
59.35
56.80
54.19
1967
54.06
55.75
53.94
54.23
57.84
60.73
63.19
63.58
67.50
65.52
60.60
52.00
1968
53.48
58.03
57.58
56.03
58.97
62.73
63.81
67.03
64.43
60.58
57.90
52.26
1969
49.13
50.71
56.74
56.60
60.00
62.43
62.74
62.13
63.50
62.13
58.43
56.77
1970
56.39
58.29
56.71
52.83
58.65
59.60
61.16
62.74
64.63
59.90
58.87
51.58
1971
49.90
50.86
50.48
51.00
54.55
58.67
60.74
65.10
63.60
56.26
55.93
51.16
1972
51.61
55.31
57.61
57.60
58.03
61.93
63.45
64.32
62.07
61.55
56.83
51.71
1973
54.39
56.43
52.42
58.93
59.03
62.73
60.65
58.61
64.00
57.90
55.17
54.23
1974
51.61
51.89
55.06
55.73
56.61
60.03
64.19
65.29
61.93
62.48
59.03
54.81
1975
52.74
54.43
54.35
53.47
59.00
61.70
63.74
62.61
60.77
57.84
55.87
53.52
1976
53.45
53.62
53.74
56.10
58.97
60.03
63.29
62.00
61.20
63.65
59.50
57.00
1977
56.39
57.25
53.58
57.53
57.26
60.90
62.03
63.71
63.10
57.74
57.33
56.45
1978
56.61
54.64
58.55
58.13
62.35
64.27
65.39
64.13
65.40
62.19
54.37
50.29
1979
52.45
50.32
53.13
55.30
58.42
59.07
63.03
63.68
69.77
62.58
58.70
57.77
1980
52.42
58.00
54.10
57.47
57.28
60.87
63.26
59.94
63.80
62.00
56.17
56.35
1981
58.00
57.29
56.01
57.53
61.13
65.23
64.45
64.77
64.64
61.48
58.97
55.74
1982
50.42
55.46
53.97
56.33
58.97
59.53
62.13
64.06
65.37
64.45
57.37
54.94
1983
56.45
57.21
56.90
56.73
59.45
63.57
66.00
67.23
68.10
62.61
59.30
53.68
1984
54.52
55.03
57.94
55.87
61.03
61.50
65.10
65.45
64.00
58.32
55.20
53.68
1985
55.48
52.54
51.10
54.63
57.84
61.43
61.84
61.97
61.67
61.23
51.17
53.42
1986
59.48
56.18
57.52
54.60
57.13
62.03
61.06
59.74
61.53
59.87
59.17
56.52
1987
54.97
57.14
57.29
56.70
60.03
59.70
61.77
60.87
60.10
60.97
59.30
53.71
1988
54.61
55.03
54.68
55.23
58.61
60.33
62.65
60.77
61.90
57.65
57.23
53.03
1989
49.94
50.07
55.48
58.40
58.35
61.37
62.19
61.97
60.00
59.13
58.07
55.13
1990
53.84
50.71
54.26
56.37
57.23
62.10
62.81
62.35
66.33
60.81
56.33
48.81
1991
53.65
58.07
53.00
54.93
55.74
58.53
61.03
63.32
62.20
63.87
57.27
55.77
1992
57.94
60.69
59.13
62.23
61.29
62.10
63.87
62.71
63.90
64.55
57.33
52.58
1993
52.16
55.89
56.45
57.20
61.42
62.67
63.00
64.10
60.97
62.90
58.23
56.74
1994
56.74
53.32
57.65
56.63
58.68
61.10
61.19
66.10
63.97
60.48
52.80
52.23
1995
57.26
57.21
56.74
56.37
56.94
60.27
64.87
63.87
64.90
64.23
60.93
59.00
1996
56.00
58.59
58.58
59.13
60.23
61.10
62.72
63.47
62.42
65.10
57.80
58.01
1997
56.10
57.07
57.32
58.82
65.15
65.00
65.97
67.19
69.55
64.43
60.99
57.25
1998
57.61
56.50
56.99
56.13
59.32
61.73
63.42
64.98
63.40
64.34
58.04
53.37
1999
55.47
53.61
54.17
56.74
57.40
60.61
60.99
65.36
63.08
61.53
62.18
54.85
2000
57.75
58.99
56.15
58.46
61.21
63.33
62.02
63.37
67.06
61.43
56.12
58.36
2001
56.71
53.66
54.95
53.03
60.67
59.80
59.95
61.79
60.60
61.08
57.89
54.28
2002
52.16
55.42
53.39
55.22
56.14
60.07
62.12
60.99
62.55
58.72
60.18
55.95
2003
59.48
54.21
56.43
54.47
57.75
61.26
61.81
64.45
64.97
65.02
56.35
54.74
2004
54.59
55.43
57.05
58.69
60.73
62.91
64.01
65.14
64.24
62.47
56.08
55.18
2005
54.06
56.99
57.25
55.42
60.34
61.08
62.39
60.88
59.67
59.32
55.85
56.19
2006
55.17
55.49
52.34
55.11
58.94
62.05
62.39
60.35
61.29
60.77
57.27
55.59
2007
49.69
52.86
55.36
54.75
57.04
60.16
64.50
63.50
63.85
59.95
56.61
51.04
2008
50.80
50.74
52.17
53.45
58.86
58.59
61.12
63.73
61.22
60.56
58.74
50.25
2009
56.07
55.13
53.04
55.07
57.42
61.19
60.39
64.53
66.29
61.90
58.17
53.84
2010
57.54
55.37
55.22
54.68
56.42
60.38
59.96
60.99
64.16
62.47
55.61
55.27
2011
56.10
52.21
54.58
54.09
56.19
60.25
60.45
60.74
63.43
63.26
56.40
54.65
2012
54.45
55.13
53.55
58.50
57.13
61.50
60.42
60.94
58.67
62.19
59.43
51.91
2013
51.31
52.60
52.55
57.43
60.72
62.40
60.24
64.26
67.27
60.06
59.43
52.19
2014
58.77
56.71
59.61
59.13
62.29
64.93
64.87
64.45
66.93
66.35
61.23
58.84
2015
59.32
60.18
58.06
57.50
57.19
61.53
67.65
66.77
64.73
65.65
57.77
54.84
2016
57.87
60.38
59.90
62.77
61.19
63.57
64.55
62.91
64.37
62.97
61.20
53.00
2017
52.39
55.32
56.87
58.33
57.84
62.24
62.43
64.61
68.73
63.84
58.80
59.10
2018
58.74
57.68
60.10
60.13
60.35
64.10
63.61
62.35
63.40
61.39
60.30
57.42
2019
58.65
51.11
55.77
58.93
56.97
63.57
65.71
68.58
68.63
64.23
56.03
57.48
2020
55.61
54.45
54.90
58.20
60.35
62.97
65.10
66.07
68.13
64.42
56.60
56.19
2021
56.00
52.11
53.42
54.13
57.84
62.33
61.52
64.52
64.30
61.52
60.10
51.74
2022
56.29
56.32
56.19
55.00
58.68
63.20
62.74
65.35
65.37
59.19
55.80
54.42
2023
56.61
52.29
51.87
54.93
57.61
61.10
64.81
67.68
65.43
64.29
61.43
58.06
2024
57.48
55.69
55.71
56.03
60.10
62.24
65.48
64.84
64.60
64.37
57.77
58.74
2025
55.81
53.71
55.32
57.30
58.90
61.53
61.48
64.65
65.23
62.32
60.03
55.97
2026
57.45
57.36
58.26
57.67
58.58
61.30
63.55
65.33
M
M
M
M
NCEI Climatology
56.40
56.60
56.70
57.70
59.69
62.50
63.40
64.50
65.10
63.49
58.90
56.20
Average Daily Low Temperature [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1949
M
M
M
M
M
M
M
M
M
M
M
37.71
1950
36.42
39.89
40.97
40.90
43.61
49.87
50.10
51.90
48.50
49.87
47.57
46.71
1951
39.61
40.25
37.06
43.67
45.77
48.27
51.13
50.68
50.17
47.52
44.77
39.68
1952
38.32
40.10
38.52
42.50
45.97
48.43
50.87
50.45
49.73
48.58
40.57
42.65
1953
45.10
39.29
39.61
42.30
45.13
47.90
49.87
53.10
52.47
46.35
47.67
41.00
1954
40.61
42.11
40.87
43.23
44.94
48.50
50.45
52.06
49.73
45.00
46.70
40.68
1955
37.03
36.82
38.45
39.80
43.97
47.10
50.58
49.45
47.63
45.29
43.37
44.48
1956
43.00
37.59
39.77
42.90
47.03
47.83
51.90
50.97
48.57
45.29
41.10
38.52
1957
35.71
42.54
44.00
43.63
48.52
50.17
51.23
51.90
52.30
48.65
43.30
42.42
1958
43.32
47.11
40.39
42.93
48.45
53.53
54.06
52.68
50.37
47.42
45.80
45.68
1959
43.35
39.36
40.42
43.80
44.94
49.23
50.03
50.10
50.54
45.80
39.43
36.74
1960
40.65
39.83
44.29
42.40
46.06
47.33
48.03
46.94
46.37
44.87
42.00
38.32
1961
39.61
40.82
40.03
38.07
45.74
49.37
49.58
51.68
45.77
43.81
41.17
37.32
1962
34.84
40.71
40.74
41.50
44.35
44.73
46.90
52.03
51.63
47.71
45.27
41.26
1963
36.03
47.25
41.97
43.63
47.81
47.63
48.00
49.52
49.37
48.94
44.23
39.71
1964
37.84
35.45
37.29
37.90
43.48
47.07
49.00
48.97
45.00
46.16
42.27
42.48
1965
41.68
37.96
41.97
45.20
44.45
45.97
47.35
51.45
45.47
46.39
47.20
38.55
1966
39.13
38.07
40.97
42.20
44.58
47.70
50.03
47.84
49.20
44.61
44.27
41.71
1967
41.10
39.29
41.03
41.17
46.19
51.97
51.55
52.26
52.20
47.32
45.10
37.16
1968
39.10
48.17
42.42
40.43
46.35
48.60
52.35
54.52
50.43
45.29
45.00
39.29
1969
37.61
40.25
39.61
43.17
48.10
53.33
51.19
48.65
48.33
44.87
40.27
43.35
1970
45.90
41.00
40.52
37.37
44.52
47.90
49.61
49.65
44.53
43.58
46.60
40.52
1971
38.19
38.61
38.65
40.23
45.65
49.00
50.39
54.03
48.50
40.87
41.40
37.77
1972
37.94
42.10
45.97
42.10
46.97
51.27
53.35
51.32
47.07
45.77
42.67
39.61
1973
39.42
40.21
37.16
42.03
46.87
48.80
47.58
46.77
46.83
41.58
44.63
41.58
1974
35.52
36.79
42.00
40.63
43.77
46.63
49.52
52.74
48.53
42.23
41.10
40.74
1975
36.97
41.32
42.19
38.90
43.97
47.47
51.16
49.52
49.87
42.45
38.40
40.23
1976
39.32
39.79
39.00
40.77
42.52
43.60
50.87
52.13
47.23
46.58
44.37
35.29
1977
37.58
41.93
39.84
41.27
42.71
50.03
47.97
53.29
50.43
44.97
41.90
42.87
1978
43.23
43.18
44.68
42.40
43.77
50.87
53.00
48.87
48.37
46.39
38.20
32.10
1979
34.55
39.07
39.06
39.20
42.55
41.67
47.39
47.10
50.70
48.26
39.33
37.19
1980
35.89
42.72
38.42
41.53
44.16
47.67
50.48
47.58
48.13
44.45
37.54
37.87
1981
39.52
36.37
40.26
41.44
46.00
47.40
49.32
50.35
49.71
52.32
45.83
44.42
1982
35.26
38.54
39.42
40.47
42.39
49.70
51.03
52.16
47.67
45.68
41.20
40.52
1983
40.94
45.86
45.68
40.63
46.23
48.93
52.45
53.48
51.50
48.97
46.43
43.81
1984
37.61
40.07
41.94
39.97
45.71
48.70
50.39
52.52
45.60
43.58
41.90
37.94
1985
37.35
35.93
38.48
43.60
43.13
46.80
51.06
49.06
48.27
44.71
37.23
37.65
1986
44.10
45.29
44.03
40.83
45.32
50.97
48.94
51.68
48.43
47.35
42.87
41.00
1987
39.16
40.89
41.58
42.53
46.97
48.83
49.32
50.29
47.17
47.77
43.20
39.52
1988
40.00
38.34
37.00
42.37
43.45
47.77
48.19
48.87
44.70
47.32
44.00
36.55
1989
34.97
35.25
42.77
43.80
46.58
48.27
50.32
51.06
46.90
44.23
40.70
37.52
1990
38.84
37.25
41.19
44.90
42.90
48.63
52.19
51.97
52.80
42.35
38.50
31.35
1991
36.03
43.46
38.23
42.00
43.90
44.87
50.74
53.35
47.60
44.00
41.90
36.94
1992
40.55
44.55
45.71
46.90
47.29
50.73
53.77
51.48
47.73
47.19
41.33
37.84
1993
37.45
39.68
45.81
44.30
48.61
48.77
48.55
51.23
47.33
47.32
37.00
38.58
1994
39.87
39.29
39.97
44.03
46.97
47.76
50.83
50.29
50.37
42.90
36.43
38.63
1995
47.58
44.75
42.29
41.73
47.74
49.13
53.68
48.16
51.60
44.71
45.93
45.94
1996
42.84
45.59
42.77
45.00
45.26
47.90
50.52
50.29
47.00
45.88
43.76
45.30
1997
40.88
39.20
41.06
43.64
49.42
50.18
52.32
54.41
53.90
47.65
45.92
38.76
1998
47.36
45.01
42.77
42.72
46.97
50.88
53.43
53.06
49.80
43.91
45.08
37.11
1999
40.30
40.69
39.28
40.87
43.90
47.47
50.96
53.86
47.83
42.92
48.24
38.45
2000
41.14
45.06
38.89
44.32
47.90
48.90
53.56
51.68
49.51
45.60
40.56
40.60
2001
37.55
38.23
41.21
39.70
43.70
45.53
49.85
51.66
46.87
44.52
43.71
41.52
2002
37.61
39.29
37.77
43.17
42.92
48.47
50.76
48.74
46.55
41.79
42.43
43.20
2003
46.85
37.74
43.28
43.50
44.84
47.81
50.90
52.95
48.42
46.66
41.47
41.87
2004
42.37
41.77
42.42
43.67
48.37
50.59
52.25
53.51
47.93
45.50
40.54
40.69
2005
39.18
41.61
42.86
42.93
49.34
50.41
52.23
50.62
47.07
44.37
42.15
42.39
2006
41.79
37.70
39.92
43.50
44.97
50.49
51.06
50.05
46.87
43.54
44.35
39.32
2007
33.37
41.41
41.80
40.71
44.12
46.33
54.00
51.48
47.81
45.21
40.85
37.08
2008
38.23
37.28
37.09
38.14
46.03
45.76
48.76
51.28
46.23
44.90
45.55
37.12
2009
36.86
38.68
38.29
39.25
46.41
48.97
50.26
50.12
49.11
44.70
40.79
37.46
2010
44.87
44.06
38.89
40.04
43.08
49.21
48.29
50.09
48.34
46.94
39.47
42.75
2011
38.77
35.96
43.13
40.22
43.32
48.04
49.28
50.19
47.88
46.30
40.27
34.19
2012
38.32
38.19
39.61
44.00
42.68
46.98
51.15
50.19
45.17
46.16
45.40
38.23
2013
34.09
34.42
38.90
41.33
44.50
48.90
49.67
51.19
51.07
41.81
39.87
32.97
2014
38.74
42.11
43.35
43.63
48.42
47.57
53.06
52.94
50.63
50.29
46.23
45.58
2015
41.10
43.39
43.10
40.33
46.87
49.70
52.68
53.29
48.47
48.84
39.73
42.29
2016
43.45
42.97
44.48
47.06
48.90
49.57
51.68
49.94
48.03
49.35
46.27
35.96
2017
37.13
42.25
43.68
43.47
45.48
49.24
50.43
52.22
50.53
42.55
43.97
40.10
2018
44.55
36.96
41.96
45.20
49.23
48.77
50.23
52.26
45.97
44.35
40.53
40.26
2019
41.97
37.07
39.97
45.90
46.29
47.19
53.84
53.13
51.06
41.84
40.07
42.71
2020
43.48
37.52
39.29
44.03
46.19
48.70
52.23
51.52
51.77
44.90
38.20
37.84
2021
40.45
37.25
35.13
40.10
44.00
49.67
51.77
49.97
47.47
45.84
43.70
39.87
2022
38.52
36.96
39.23
39.57
44.94
49.60
52.90
53.42
50.20
45.97
37.17
38.87
2023
39.74
34.61
37.06
40.97
47.48
49.53
53.74
55.45
51.17
46.77
42.97
44.00
2024
44.97
41.83
41.32
41.73
43.26
48.77
51.84
51.77
48.90
45.37
41.57
41.97
2025
37.77
38.36
42.00
43.87
45.55
47.57
52.23
51.55
53.70
46.06
44.90
41.74
2026
39.65
42.82
42.74
42.30
47.52
48.03
51.29
50.50
M
M
M
M
NCEI Climatology
40.50
40.60
41.40
42.81
46.00
48.50
51.31
51.30
48.50
44.99
42.10
39.70
Average Daily Temperature (high+low)/2 [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1949
M
M
M
M
M
M
M
M
M
M
M
44.87
1950
42.02
46.77
47.40
48.50
50.16
54.48
55.82
56.24
53.87
55.92
54.10
52.44
1951
45.53
47.04
44.15
47.77
51.40
52.30
54.69
54.58
54.48
53.90
50.75
45.85
1952
43.98
45.91
44.13
47.95
51.10
52.27
54.73
54.58
55.00
53.81
48.97
47.82
1953
50.02
45.75
46.24
47.77
51.03
53.37
54.26
57.65
57.37
53.98
52.78
47.90
1954
46.71
48.52
47.08
49.68
50.56
53.58
54.92
56.13
56.23
53.44
53.02
47.77
1955
43.61
43.46
45.27
45.85
49.03
52.67
54.61
52.94
54.10
51.27
49.10
50.00
1956
48.34
44.22
46.50
48.17
52.27
53.42
55.61
56.16
54.97
51.92
47.65
45.27
1957
42.27
48.04
48.92
49.48
53.50
55.32
55.90
56.39
58.30
55.37
50.55
48.74
1958
50.29
52.86
47.15
49.45
53.73
58.35
57.21
57.00
58.52
53.58
51.20
51.77
1959
48.87
46.16
47.55
49.52
50.73
54.57
54.81
55.02
56.18
53.42
48.70
45.81
1960
47.97
47.95
50.45
49.43
52.23
55.05
54.45
55.55
53.37
53.53
49.53
47.00
1961
48.66
48.43
47.58
47.10
51.77
55.77
56.26
57.47
55.55
52.06
48.75
44.71
1962
44.47
47.45
47.50
49.60
51.97
53.12
55.02
58.65
57.97
54.98
52.47
49.10
1963
45.35
54.98
49.37
50.78
54.50
55.07
56.50
56.56
57.85
56.56
51.73
48.21
1964
45.21
46.40
44.66
46.20
50.08
53.93
55.84
56.60
54.92
54.10
49.12
47.84
1965
46.97
44.73
48.39
50.25
50.02
51.93
53.74
57.58
52.95
53.95
53.78
45.79
1966
46.19
45.25
46.68
49.83
51.06
55.55
56.45
55.16
57.38
51.98
50.53
47.95
1967
47.58
47.52
47.48
47.70
52.02
56.35
57.37
57.92
59.85
56.42
52.85
44.58
1968
46.29
53.10
50.00
48.23
52.66
55.67
58.08
60.77
57.43
52.94
51.45
45.77
1969
43.37
45.48
48.18
49.88
54.05
57.88
56.97
55.39
55.92
53.50
49.35
50.06
1970
51.15
49.64
48.61
45.10
51.58
53.75
55.39
56.19
54.58
51.74
52.73
46.05
1971
44.05
44.73
44.56
45.62
50.10
53.83
55.56
59.56
56.05
48.56
48.67
44.47
1972
44.77
48.71
51.79
49.85
52.50
56.60
58.40
57.82
54.57
53.66
49.75
45.66
1973
46.90
48.32
44.79
50.48
52.95
55.77
54.11
52.69
55.42
49.74
49.90
47.90
1974
43.56
44.34
48.53
48.18
50.19
53.33
56.85
59.02
55.23
52.35
50.07
47.77
1975
44.85
47.88
48.27
46.18
51.48
54.58
57.45
56.06
55.32
50.15
47.13
46.87
1976
46.39
46.71
46.37
48.43
50.74
51.82
57.08
57.06
54.22
55.11
51.93
46.15
1977
46.98
49.59
46.71
49.40
49.98
55.47
55.00
58.50
56.77
51.35
49.62
49.66
1978
49.92
48.91
51.61
50.27
53.06
57.57
59.19
56.50
56.88
54.29
46.28
41.19
1979
43.50
44.70
46.10
47.25
50.48
50.37
55.21
55.39
60.23
55.42
49.02
47.48
1980
44.15
50.36
46.26
49.50
50.72
54.27
56.87
53.76
55.97
53.23
46.85
47.11
1981
48.76
46.83
48.14
49.49
53.56
56.32
56.89
57.56
57.18
56.90
52.40
50.08
1982
42.84
47.00
46.69
48.40
50.68
54.62
56.58
58.11
56.52
55.06
49.28
47.73
1983
48.69
51.54
51.29
48.68
52.84
56.25
59.23
60.35
59.80
55.79
52.87
48.74
1984
46.06
47.55
49.94
47.92
53.37
55.10
57.74
58.98
54.80
50.95
48.55
45.81
1985
46.42
44.23
44.79
49.12
50.48
54.12
56.45
55.52
54.97
52.97
44.20
45.53
1986
51.79
50.73
50.77
47.72
51.23
56.50
55.00
55.71
54.98
53.61
51.02
48.76
1987
47.06
49.02
49.44
49.62
53.50
54.27
55.55
55.58
53.63
54.37
51.25
46.61
1988
47.31
46.69
45.84
48.80
51.03
54.05
55.42
54.82
53.30
52.48
50.62
44.79
1989
42.45
42.66
49.13
51.10
52.47
54.82
56.26
56.52
53.45
51.68
49.38
46.32
1990
46.34
43.98
47.73
50.63
50.06
55.37
57.50
57.16
59.57
51.58
47.42
40.08
1991
44.84
50.77
45.61
48.47
49.82
51.70
55.89
58.34
54.90
53.94
49.58
46.35
1992
49.24
52.62
52.42
54.57
54.29
56.42
58.82
57.10
55.82
55.87
49.33
45.21
1993
44.81
47.79
51.13
50.75
55.02
55.72
55.77
57.66
54.15
55.11
47.62
47.66
1994
48.31
46.30
48.81
50.33
52.82
54.43
56.01
58.19
57.17
51.69
44.62
45.43
1995
52.42
50.98
49.52
49.05
52.34
54.70
59.27
56.02
58.25
54.47
53.43
52.47
1996
49.42
52.09
50.68
52.07
52.74
54.50
56.62
56.88
54.71
55.49
50.78
51.65
1997
48.49
48.14
49.19
51.23
57.29
57.59
59.15
60.80
61.73
56.04
53.46
48.01
1998
52.49
50.76
49.88
49.43
53.15
56.30
58.42
59.02
56.60
54.12
51.56
45.24
1999
47.88
47.15
46.73
48.80
50.65
54.04
55.97
59.61
55.45
52.23
55.21
46.65
2000
49.45
52.02
47.52
51.39
54.55
56.11
57.79
57.52
58.29
53.52
48.34
49.48
2001
47.13
45.94
48.08
46.36
52.18
52.66
54.90
56.72
53.74
52.80
50.80
47.90
2002
44.88
47.35
45.58
49.19
49.53
54.27
56.44
54.86
54.55
50.25
51.30
49.57
2003
53.17
45.97
49.85
48.98
51.30
54.53
56.35
58.70
56.70
55.84
48.91
48.30
2004
48.48
48.60
49.74
51.18
54.55
56.75
58.13
59.33
56.09
53.98
48.31
47.93
2005
46.62
49.30
50.05
49.18
54.84
55.74
57.31
55.75
53.37
51.84
49.00
49.29
2006
48.48
46.59
46.13
49.30
51.95
56.27
56.73
55.20
54.08
52.15
50.81
47.45
2007
41.53
47.13
48.58
47.73
50.58
53.25
59.25
57.49
55.83
52.58
48.73
44.06
2008
44.51
44.01
44.63
45.80
52.44
52.18
54.94
57.50
53.73
52.73
52.15
43.69
2009
46.47
46.91
45.67
47.16
51.91
55.08
55.33
57.32
57.70
53.30
49.48
45.65
2010
51.20
49.72
47.06
47.36
49.75
54.80
54.12
55.54
56.25
54.71
47.54
49.01
2011
47.44
44.09
48.85
47.16
49.76
54.14
54.87
55.47
55.65
54.78
48.34
44.42
2012
46.39
46.66
46.58
51.25
49.90
54.24
55.78
55.56
51.92
54.18
52.42
45.07
2013
42.70
43.51
45.73
49.38
52.61
55.65
54.95
57.73
59.17
50.94
49.65
42.58
2014
48.76
49.41
51.48
51.38
55.36
56.25
58.97
58.69
58.78
58.32
53.73
52.21
2015
50.21
51.79
50.58
48.92
52.03
55.62
60.16
60.03
56.60
57.24
48.75
48.56
2016
50.66
51.67
52.19
54.92
55.05
56.57
58.11
56.42
56.20
56.16
53.73
44.48
2017
44.76
48.79
50.27
50.90
51.66
55.74
56.43
58.42
59.63
53.19
51.38
49.60
2018
51.65
47.32
51.03
52.67
54.79
56.43
56.92
57.31
54.68
52.87
50.42
48.84
2019
50.31
44.09
47.87
52.42
51.63
55.38
59.77
60.85
59.85
53.03
48.05
50.10
2020
49.55
45.98
47.10
51.12
53.27
55.83
58.66
58.79
59.95
54.66
47.40
47.02
2021
48.23
44.68
44.27
47.12
50.92
56.00
56.64
57.24
55.88
53.68
51.90
45.81
2022
47.40
46.64
47.71
47.28
51.81
56.40
57.82
59.39
57.78
52.58
46.48
46.65
2023
48.18
43.45
44.47
47.95
52.55
55.32
59.27
61.56
58.30
55.53
52.20
51.03
2024
51.23
48.76
48.52
48.88
51.68
55.52
58.66
58.31
56.75
54.87
49.67
50.35
2025
46.79
46.04
48.66
50.58
52.23
54.55
56.85
58.10
59.47
54.19
52.47
48.85
2026
48.55
50.09
50.50
49.98
53.05
54.67
57.42
57.92
M
M
M
M
NCEI Climatology
48.45
48.60
49.05
50.25
52.85
55.50
57.35
57.90
56.80
54.24
50.50
47.95
Average Relative Humidity [%]
This value is computed via a simple average of available observations weighted
by the duration between observations.
