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 (USC00475516) 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
1989
M
M
M
M
M
M
M
M
M
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
M
0.00
M
M
1998
M
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1999
0.00
0.00
0.00
0.23
6.56
1.97
4.27
1.99
1.26
1.07
0.52
0.14
2000
0.14
0.28
0.39
0.00
1.09
3.65
4.02
0.69
1.48
0.51
0.98
0.11
2001
0.30
0.16
0.01
2.91
2.32
2.17
1.18
1.39
2.22
1.19
1.75
0.95
2002
0.07
0.57
1.86
3.53
2.23
1.99
2.88
3.75
5.03
3.33
0.22
0.40
2003
0.03
0.24
0.83
2.52
4.58
2.43
1.93
1.15
1.83
0.58
1.33
0.31
2004
0.09
0.47
1.74
3.17
4.41
2.40
1.67
2.52
2.32
4.84
0.78
0.82
2005
0.42
0.72
0.56
1.33
1.82
3.34
0.83
1.09
2.26
4.90
1.71
0.18
2006
0.53
0.27
1.59
0.29
3.19
1.20
3.67
3.09
2.28
1.17
1.21
1.76
2007
0.08
0.17
1.77
0.71
2.44
1.52
0.88
1.60
3.24
4.66
0.16
0.40
2008
0.15
0.25
0.43
2.04
3.09
2.69
1.86
1.08
3.65
1.95
0.93
0.35
2009
0.12
0.10
0.78
1.40
1.87
1.50
1.29
2.83
0.56
3.78
0.21
0.25
2010
0.41
0.06
0.34
0.59
1.17
6.75
5.97
5.37
5.79
1.63
0.77
0.35
2011
0.01
0.16
0.89
0.87
2.33
2.57
1.84
2.43
1.08
1.87
0.86
0.82
2012
0.38
0.47
0.47
1.11
2.88
2.90
2.71
1.44
0.92
1.91
0.69
0.14
2013
0.63
0.23
0.82
2.99
3.33
3.22
0.64
2.77
0.59
2.60
0.94
0.46
2014
0.11
0.40
0.33
2.36
3.10
3.65
0.74
2.29
4.50
2.06
0.58
0.36
2015
0.07
0.01
0.40
1.18
3.12
2.64
3.27
1.19
1.44
1.96
2.40
2.25
2016
0.06
0.33
1.83
1.33
3.76
3.80
4.33
3.90
2.71
2.01
1.12
0.37
2017
0.45
0.91
0.62
2.84
2.64
3.98
1.23
3.53
2.21
2.77
0.22
0.33
2018
0.34
0.45
0.63
0.39
1.71
6.18
2.29
1.66
1.98
2.86
0.52
0.21
2019
0.08
1.25
0.37
2.40
4.11
1.45
1.52
3.69
5.34
1.83
0.93
1.43
2020
0.25
0.01
1.38
1.84
0.92
3.87
4.00
2.53
2.32
1.31
1.05
0.24
2021
0.03
0.59
0.63
2.58
1.42
1.90
1.60
1.68
2.34
1.02
0.92
0.67
2022
0.06
0.10
1.08
1.72
2.66
0.47
1.13
1.82
1.41
0.54
2.22
0.66
2023
0.54
0.58
1.11
2.67
1.08
1.18
3.11
1.55
1.85
1.67
0.26
0.33
2024
0.02
0.06
0.94
1.71
3.07
5.04
1.03
M
0.57
1.48
1.28
0.51
2025
0.01
0.04
1.56
2.31
0.83
4.02
1.40
2.35
2.94
0.31
0.59
0.47
2026
0.40
0.38
0.40
3.68
0.70
3.06
0.73
0.04
M
M
M
M
NCEI Climatology
1.27
1.11
1.72
2.88
3.76
4.36
4.10
3.65
3.56
3.67
2.08
1.67
Average Wind Speed [MPH]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1989
M
M
M
M
M
M
M
M
M
10.1
10.8
9.5
1990
10.6
10.3
9.9
11.3
8.2
10.1
7.0
6.6
6.2
7.6
9.7
9.4
1991
10.5
9.8
9.2
11.9
9.8
9.2
9.3
9.2
10.6
10.6
12.2
7.7
1992
7.9
8.6
6.1
8.5
9.4
5.7
6.4
6.8
9.9
6.7
6.9
7.1
1993
8.1
6.7
5.9
8.3
8.3
7.3
8.5
6.2
8.0
9.2
8.2
7.0
1994
8.2
9.3
9.6
9.7
8.7
5.7
6.4
6.4
5.9
8.7
10.0
7.0
1995
8.2
10.7
9.1
8.2
10.3
6.8
10.2
9.0
8.8
9.6
6.4
6.5
1996
6.9
10.1
10.7
12.1
9.8
8.5
10.5
10.3
10.1
11.8
13.8
10.5
1997
11.3
7.3
11.3
9.9
16.3
7.0
M
M
M
M
M
M
1998
M
11.5
9.4
7.2
6.9
9.8
3.2
8.5
7.7
8.4
10.8
7.8
1999
7.9
8.4
8.1
5.8
8.0
6.3
6.1
5.0
6.2
7.4
7.2
6.6
2000
6.7
6.6
6.5
6.2
6.7
6.7
5.4
5.3
6.9
5.8
7.2
5.3
2001
6.0
6.9
3.0
8.3
6.3
6.1
5.2
5.3
5.3
6.2
6.2
7.4
2002
6.0
8.4
6.8
7.1
7.6
6.3
5.0
5.5
5.7
6.2
6.4
6.9
2003
7.4
6.4
7.0
6.8
6.6
4.7
5.6
4.9
7.2
6.4
7.1
6.8
2004
6.5
6.1
7.5
7.0
7.9
6.6
5.4
5.7
7.2
7.1
6.1
8.1
2005
6.3
6.1
5.4
6.7
7.0
7.1
5.5
5.2
6.5
5.2
6.7
3.2
2006
5.6
5.2
4.7
6.4
7.2
4.9
5.2
4.0
4.5
5.9
5.0
4.6
2007
5.4
6.6
7.7
7.6
8.4
6.7
5.2
5.9
8.0
7.5
7.6
5.3
2008
6.3
5.5
5.4
7.5
7.3
7.0
5.8
5.0
6.6
6.6
7.8
6.8
2009
5.3
7.2
7.6
7.2
8.0
5.5
6.1
5.8
4.0
6.3
5.7
6.3
2010
7.0
5.6
5.4
7.9
6.6
5.3
5.4
6.1
6.6
5.5
8.0
6.9
2011
6.1
8.2
7.2
7.8
8.1
8.0
5.6
4.7
5.7
6.3
6.9
6.4
2012
7.2
6.3
7.7
6.8
7.5
6.0
4.5
4.8
5.2
6.5
6.2
5.8
2013
7.1
5.8
6.6
7.1
7.1
5.0
6.3
5.0
6.0
6.3
7.9
5.1
2014
7.3
6.6
6.5
7.5
6.1
6.4
6.4
4.5
5.7
6.8
7.1
5.5
2015
6.5
6.3
7.1
7.3
7.1
4.9
5.6
6.1
5.7
6.1
6.9
6.4
2016
5.8
7.1
5.1
7.0
5.9
6.4
5.5
4.5
5.8
5.9
5.5
7.6
2017
5.0
7.3
7.2
6.9
6.1
5.9
4.3
4.9
5.8
7.0
7.6
5.8
2018
7.1
5.9
5.6
6.2
5.4
5.8
5.1
3.9
5.5
6.3
6.5
6.3
2019
5.9
4.9
6.2
6.2
6.1
5.1
5.3
4.1
6.4
7.4
6.0
6.1
2020
5.6
6.2
6.9
6.7
6.2
6.2
4.4
4.9
5.5
6.3
7.2
5.5
2021
4.3
5.5
7.6
6.1
6.3
5.2
4.2
4.6
5.4
5.3
7.2
6.9
2022
6.6
7.0
7.2
8.4
6.6
5.0
5.6
5.1
5.5
7.0
7.4
6.8
2023
5.6
7.0
6.4
8.1
5.8
4.5
4.1
4.5
5.4
6.0
6.5
5.3
2024
5.6
5.9
7.2
8.0
6.3
6.5
5.9
M
5.2
6.9
7.3
6.6
2025
7.3
6.6
7.3
7.1
6.3
5.5
5.0
4.6
4.7
5.9
6.5
7.4
2026
6.5
7.0
7.1
7.2
6.8
5.6
4.9
6.1
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
1989
M
M
M
M
M
M
M
M
M
62.62
28.53
11.93
1990
29.13
26.65
41.30
53.83
62.19
72.40
76.00
75.39
65.97
52.84
40.97
24.53
1991
14.61
28.31
37.78
55.71
68.48
77.97
75.48
77.45
62.67
50.49
30.83
24.39
1992
23.32
28.82
35.67
46.55
67.97
70.95
71.25
71.93
64.02
52.06
32.37
23.97
1993
21.52
24.57
39.66
46.76
62.01
69.63
76.34
76.44
60.09
49.91
32.62
25.52
1994
9.62
20.31
38.41
50.82
67.62
77.08
75.67
72.37
69.36
56.48
41.16
30.11
1995
22.19
22.12
39.66
45.73
63.27
80.81
78.58
79.92
66.12
52.40
26.76
18.49
1996
15.05
22.94
27.22
46.22
66.94
73.10
61.70
75.63
62.50
51.03
29.01
25.16
1997
28.08
16.47
31.20
57.20
51.60
80.60
72.00
60.73
M
46.00
M
M
1998
24.80
34.03
35.97
53.76
74.03
68.30
75.68
77.43
72.10
54.09
38.97
28.64
1999
20.21
31.74
41.30
56.55
67.71
73.70
79.90
73.57
66.26
52.38
46.04
29.10
2000
24.10
33.99
45.41
49.88
67.83
71.30
74.97
75.72
65.66
58.28
36.80
17.60
2001
27.70
19.27
33.80
51.56
65.62
73.28
77.58
78.28
65.78
53.15
49.58
32.70
2002
31.88
33.22
31.71
48.74
59.70
74.42
79.50
73.46
66.44
44.14
33.56
27.70
2003
17.83
19.40
34.38
48.62
62.02
70.46
75.49
77.17
65.54
51.28
34.64
28.28
2004
14.17
28.09
35.72
50.18
58.83
68.06
73.17
67.59
70.58
52.26
40.04
24.57
2005
19.52
29.75
34.26
55.28
59.29
76.64
77.81
74.21
70.76
55.28
38.30
23.87
2006
30.43
23.64
36.70
56.48
62.37
73.04
80.31
75.37
63.20
49.01
41.24
31.59
2007
25.96
19.85
41.87
50.18
68.12
76.76
77.81
75.84
68.42
57.72
35.90
23.75
2008
22.13
23.43
32.58
48.80
60.45
71.84
78.16
80.43
71.00
56.56
39.62
19.75
2009
15.80
25.73
36.27
49.68
64.65
71.83
72.91
74.03
72.99
46.40
46.86
24.02
2010
23.06
28.35
50.83
61.16
68.97
71.58
78.97
78.30
63.78
59.24
40.91
24.55
2011
19.12
30.95
41.19
51.25
64.68
75.26
81.37
76.35
71.56
64.76
57.51
36.59
2012
28.25
32.50
52.15
54.14
69.28
76.10
82.23
75.49
66.56
50.99
40.38
30.26
2013
24.22
24.86
32.17
42.44
65.30
71.68
78.39
77.31
70.06
54.31
36.39
17.70
2014
13.72
17.46
31.13
48.09
68.02
77.32
76.76
76.66
67.45
52.00
29.89
27.27
2015
20.56
14.89
39.81
54.51
66.91
72.52
78.37
74.51
72.97
55.76
45.85
34.15
2016
23.21
28.81
43.25
50.69
67.47
74.00
79.01
77.56
70.09
58.17
48.83
25.09
2017
25.45
34.31
37.06
53.94
61.58
74.44
78.92
72.80
71.60
57.33
36.82
21.27
2018
23.84
25.68
36.68
43.24
75.34
77.03
79.94
77.47
69.36
49.34
30.95
30.26
2019
18.55
21.91
35.10
48.38
61.74
74.28
80.93
74.94
67.91
50.83
32.85
29.63
2020
27.36
28.32
39.95
49.17
63.39
76.90
80.93
77.03
64.89
46.68
45.48
30.05
2021
26.34
20.63
45.56
53.15
64.73
79.51
79.75
78.25
70.94
60.75
40.25
30.74
2022
18.65
21.92
34.23
44.31
66.63
71.84
77.31
74.63
68.19
55.52
39.96
24.06
2023
24.60
28.43
34.27
47.35
68.45
75.72
76.10
74.72
69.32
52.33
39.54
36.16
2024
23.93
37.80
41.25
52.04
65.85
71.47
73.49
M
74.58
60.73
41.03
27.11
2025
19.14
22.85
40.70
49.12
66.38
73.25
78.55
73.90
69.23
58.66
39.14
22.70
2026
15.79
29.74
41.05
53.11
65.26
74.35
81.89
78.11
M
M
M
M
NCEI Climatology
19.70
25.30
36.80
49.20
63.79
73.10
76.71
74.60
66.51
52.30
36.60
24.70
Average Daily Low Temperature [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1989
M
M
M
M
M
M
M
M
M
46.00
18.47
0.12
1990
14.91
10.77
25.30
37.64
44.97
56.67
60.50
58.61
50.62
36.14
29.62
13.30
1991
3.81
12.51
22.83
37.94
50.81
59.80
60.42
59.61
48.38
35.15
21.47
14.12
1992
12.75
16.75
20.80
33.27
48.23
51.92
53.94
52.16
49.31
37.08
25.81
15.57
1993
9.06
6.32
20.23
32.47
47.67
52.52
60.07
58.40
44.00
34.70
23.93
16.21
1994
-5.45
4.57
24.41
33.69
48.52
58.05
59.05
55.49
53.19
41.52
28.81
19.41
1995
11.04
8.98
25.96
32.18
46.37
60.24
61.44
63.78
48.46
42.10
18.11
11.42
1996
-0.71
8.94
14.05
31.68
50.78
58.59
56.30
61.87
52.12
41.00
23.76
22.52
1997
22.16
7.87
28.90
21.20
41.20
71.60
70.00
58.40
M
45.00
M
M
1998
24.80
30.94
24.17
37.41
59.20
57.63
64.19
62.12
54.05
40.84
30.89
18.53
1999
11.66
20.22
28.06
36.72
45.82
53.90
60.92
54.35
45.38
34.32
30.26
15.39
2000
5.06
15.30
25.85
31.26
45.47
51.32
55.92
55.86
46.34
38.78
27.26
0.53
2001
10.81
1.34
30.20
33.74
44.31
53.18
57.08
57.61
47.36
38.75
33.62
19.81
2002
15.92
15.03
10.34
30.32
38.56
56.12
60.05
54.94
48.50
29.62
19.76
12.95
2003
1.17
-2.59
13.42
26.72
37.34
48.86
53.43
55.17
47.36
33.74
22.04
12.61
2004
-2.78
8.04
20.15
29.30
38.33
47.00
52.26
47.50
49.28
35.89
26.06
9.35
2005
4.25
11.75
11.39
33.20
40.01
54.26
56.68
54.76
47.84
38.33
24.08
12.61
2006
18.01
4.10
18.18
35.30
43.96
49.46
57.43
54.18
43.58
32.35
29.18
19.34
2007
10.28
2.56
21.95
30.62
45.41
52.04
55.81
55.81
49.46
41.81
23.42
9.41
2008
6.63
2.39
13.36
31.10
36.53
51.62
56.15
54.99
51.80
39.61
26.90
2.85
2009
-4.64
7.89
16.82
29.46
41.25
50.19
51.32
52.15
48.19
34.75
31.18
10.44
2010
8.87
9.84
24.44
36.93
45.00
54.14
60.20
60.36
43.49
37.61
26.63
11.73
2011
3.77
2.52
9.67
26.71
43.17
51.89
62.21
55.88
42.77
38.44
25.63
8.91
2012
11.50
16.48
34.73
32.18
45.18
53.36
58.94
53.31
42.08
35.48
26.72
18.30
2013
7.32
7.64
14.17
27.80
42.35
51.31
57.25
53.88
47.10
37.86
24.05
1.50
2014
-3.62
-3.45
8.51
26.20
42.97
54.75
53.07
55.01
45.67
37.01
16.75
14.49
2015
5.81
-5.48
18.37
31.25
44.13
51.00
56.06
55.81
53.14
37.48
28.87
25.94
2016
9.53
13.80
26.22
31.06
43.09
53.73
57.67
58.15
51.69
39.97
31.43
12.76
2017
10.47
16.37
18.67
33.34
40.94
53.19
54.97
52.08
50.79
39.96
23.56
6.40
2018
6.57
3.60
15.92
21.44
48.26
55.90
56.99
56.78
50.47
34.14
19.67
17.47
2019
8.00
10.40
14.30
30.64
40.15
50.61
59.23
53.46
52.88
36.05
22.22
16.07
2020
14.55
4.94
24.64
27.48
42.89
54.10
60.33
56.27
46.30
31.67
28.18
16.40
2021
12.45
-1.83
25.38
32.87
42.42
57.70
56.17
57.54
48.71
43.84
24.45
13.87
2022
-0.42
1.49
17.47
29.18
45.65
48.71
56.65
55.26
46.16
35.84
24.98
10.27
2023
14.59
10.29
15.33
28.72
42.80
51.98
53.54
53.25
51.97
38.83
23.96
23.36
2024
14.97
16.09
21.26
32.07
42.81
51.50
53.14
M
49.65
37.38
28.37
14.76
2025
2.29
3.92
19.76
28.40
40.86
53.12
57.08
54.51
49.81
38.56
23.92
8.10
2026
0.81
10.90
20.45
31.25
40.00
52.79
60.01
57.70
M
M
M
M
NCEI Climatology
1.20
2.93
12.59
25.70
39.39
50.80
54.41
51.68
44.79
33.50
21.89
9.40
Average Daily Temperature (high+low)/2 [F]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1989
M
M
M
M
M
M
M
M
M
54.31
23.50
6.02
1990
22.02
18.71
33.30
45.73
53.58
64.53
68.25
67.00
58.29
44.49
35.30
18.92
1991
9.21
20.41
30.30
46.82
59.65
68.88
67.95
68.53
55.52
42.82
26.15
19.26
1992
18.03
22.79
28.23
39.91
58.10
61.44
62.59
62.04
56.66
44.57
29.09
19.77
1993
15.29
15.45
29.95
39.61
54.84
61.08
68.20
67.42
52.04
42.30
28.27
20.87
1994
2.08
12.44
31.41
42.26
58.07
67.56
67.36
63.93
61.28
49.00
34.99
24.76
1995
16.62
15.55
32.81
38.95
54.82
70.52
70.01
71.85
57.29
47.25
22.43
14.96
1996
7.17
15.94
20.63
38.95
58.86
65.84
59.00
68.75
57.31
46.01
26.39
23.84
1997
25.12
12.17
30.05
39.20
46.40
76.10
71.00
59.57
M
45.50
M
M
1998
24.80
32.48
30.07
45.59
66.62
62.96
69.93
69.77
63.08
47.46
34.93
23.59
1999
15.94
25.98
34.68
46.64
56.76
63.80
70.41
63.96
55.82
43.35
38.15
22.25
2000
14.58
24.64
35.63
40.57
56.65
61.31
65.45
65.79
56.00
48.53
32.03
9.06
2001
19.25
10.30
32.00
42.65
54.96
63.23
67.33
67.94
56.57
45.95
41.60
26.25
2002
23.90
24.13
21.03
39.53
49.13
65.27
69.77
64.20
57.47
36.88
26.66
20.33
2003
9.50
8.41
23.90
37.67
49.68
59.66
64.46
66.17
56.45
42.51
28.34
20.45
2004
5.70
18.07
27.94
39.74
48.58
57.53
62.72
57.55
59.93
44.08
33.05
16.96
2005
11.88
20.75
22.83
44.24
49.65
65.45
67.25
64.49
59.30
46.81
31.19
18.24
2006
24.22
13.87
27.44
45.89
53.16
61.25
68.87
64.78
53.39
40.68
35.21
25.47
2007
18.12
11.20
31.91
40.40
56.76
64.40
66.81
65.82
58.94
49.77
29.66
16.58
2008
14.38
12.91
22.97
39.95
48.49
61.73
67.16
67.71
61.40
48.08
33.26
11.30
2009
6.06
16.71
26.54
39.57
52.95
61.01
62.12
63.09
60.59
40.58
39.02
17.23
2010
15.96
19.09
37.64
49.05
56.99
62.86
69.59
69.33
53.64
48.42
33.77
18.14
2011
11.45
16.74
25.43
38.98
53.92
63.57
71.79
66.12
57.16
51.60
41.57
22.75
2012
19.88
24.49
43.44
43.16
57.23
64.73
70.58
64.40
54.32
43.24
33.55
24.28
2013
15.77
16.25
23.17
35.12
53.82
61.49
67.82
65.60
58.58
46.08
30.22
9.60
2014
5.05
7.00
19.82
37.14
55.50
66.04
64.91
65.84
56.56
44.50
23.32
20.88
2015
13.19
4.70
29.09
42.88
55.52
61.76
67.22
65.16
63.06
46.62
37.36
30.05
2016
16.37
21.30
34.73
40.88
55.28
63.86
68.34
67.85
60.89
49.07
40.13
18.92
2017
17.96
25.34
27.87
43.64
51.26
63.81
66.95
62.44
61.20
48.65
30.19
13.84
2018
15.20
14.64
26.30
32.34
61.80
66.47
68.46
67.13
59.92
41.74
25.31
23.86
2019
13.28
16.16
24.70
39.51
50.94
62.45
70.08
64.20
60.39
43.44
27.54
22.85
2020
20.95
16.63
32.29
38.32
53.14
65.50
70.63
66.65
55.59
39.18
36.83
23.23
2021
19.40
9.40
35.47
43.01
53.57
68.61
67.96
67.89
59.83
52.29
32.35
22.30
2022
9.12
11.71
25.85
36.75
56.14
60.28
66.98
64.95
57.18
45.68
32.47
17.17
2023
19.60
19.36
24.80
38.04
55.62
63.85
64.82
63.98
60.64
45.58
31.75
29.76
2024
19.45
26.94
31.25
42.06
54.33
61.49
63.31
M
62.11
49.06
34.70
20.94
2025
10.71
13.38
30.23
38.76
53.62
63.19
67.81
64.20
59.52
48.61
31.53
15.40
2026
8.30
20.32
30.75
42.18
52.63
63.57
70.95
67.90
M
M
M
M
NCEI Climatology
10.45
14.11
24.69
37.45
51.59
61.95
65.56
63.14
55.65
42.90
29.25
17.05
Average Relative Humidity [%]
This value is computed via a simple average of available observations weighted
by the duration between observations.
