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Data Calendar for Grinnell

The calendar chart below shows the daily reported climate variables. You can click on a date to display the values for all sites for that day. Time stamps are displayed in the America/Chicago timezone. Wind speeds are in mph and temperatures in Fahrenheit. Values flagged with a (E) are estimated by the IEM.

Year:  

Month:  

 

May 2026Jun 2026 Jul 2026
SundayMondayTuesdayWednesday ThursdayFridaySaturday
3101
High: 87.6
Low: 61.5
Precip: M
Avg Wind: ENE @ 3.5
Gust:
ENE @ 16
(1:35 PM)
RH% Min/Max: 32-84
Feel Min/Max: 62 to 85		02
High: 82.8
Low: 54.5
Precip: M
Avg Wind: E @ 5.1
Gust:
E @ 24
(5:35 PM)
RH% Min/Max: 17-58
Feel Min/Max: 55 to 80		03
High: 82.6
Low: 58.5
Precip: M
Avg Wind: SSE @ 5.6
Gust:
SSE @ 24
(11:15 AM)
RH% Min/Max: 21-57
Feel Min/Max: 58 to 80		04
High: 84.7
Low: 60
Precip: 0.36
Avg Wind: SSW @ 5.6
Gust:
E @ 24
(12:15 PM)
RH% Min/Max: 45-99
Feel Min/Max: 60 to 84		05
High: 82.4
Low: 65.7
Precip: 0.33
Avg Wind: SW @ 5.8
Gust:
WSW @ 30
(11:55 PM)
RH% Min/Max: 59-100
Feel Min/Max: 66 to 85		06
High: 87.8
Low: 66.4
Precip: 0.14
Avg Wind: SW @ 5.6
Gust:
SW @ 49
(2:15 AM)
RH% Min/Max: 34-90
Feel Min/Max: 66 to 88
07
High: 79.7
Low: 69
Precip: 0.05
Avg Wind: SE @ 8.1
Gust:
E @ 22
(4:35 PM)
RH% Min/Max: 69-96
Feel Min/Max: 69 to 80		08
High: 84.4
Low: 69
Precip: 0.15
Avg Wind: ESE @ 3.9
RH% Min/Max: 61-97
Feel Min/Max: 69 to 89		09
High: 90.7
Low: 68
Precip: M
Avg Wind: SSE @ 6.2
Gust:
S @ 17
(7:55 PM)
RH% Min/Max: 54-98
Feel Min/Max: 68 to 99		10
High: 83.3
Low: 67
Precip: 0.11
Avg Wind: SSW @ 13.2
Gust:
SW @ 31
(5:55 PM)
RH% Min/Max: 69-93
Feel Min/Max: 67 to 88		11
High: 76
Low: 59
Precip: 0.79
Avg Wind: W @ 8.8
Gust:
WSW @ 32
(6:35 PM)
RH% Min/Max: 58-99
Feel Min/Max: 59 to 75		12
High: 80.6
Low: 55
Precip: M
Avg Wind: WSW @ 8.0
Gust:
S @ 22
(12:15 PM)
RH% Min/Max: 36-89
Feel Min/Max: 55 to 80		13
High: 78.6
Low: 60.4
Precip: 0.23
Avg Wind: WSW @ 7.3
Gust:
WNW @ 29
(12:15 PM)
RH% Min/Max: 57-99
Feel Min/Max: 61 to 78
14
High: 70
Low: 54
Precip: M
Avg Wind: NW @ 10.3
Gust:
W @ 26
(12:15 PM)
RH% Min/Max: 41-94
Feel Min/Max: 54 to 70		15
High: 78
Low: 50
Precip: M
Avg Wind: WSW @ 7.8
Gust:
SSW @ 22
(2:55 PM)
RH% Min/Max: 27-87
Feel Min/Max: 50 to 78		16
High: 74.3
Low: 56
Precip: M
Avg Wind: W @ 12.3
Gust:
SSW @ 31
(11:35 AM)
RH% Min/Max: 28-84
Feel Min/Max: 57 to 74		17
High: 78.4
Low: 54
Precip: 1.36
Avg Wind: SW @ 13.9
Gust:
W @ 38
(6:35 AM)
RH% Min/Max: 53-99
Feel Min/Max: 54 to 78		18
High: 73.4
Low: 57.2
Precip: M
Avg Wind: WNW @ 7.5
Gust:
NW @ 22
(12:15 AM)
RH% Min/Max: 53-89
Feel Min/Max: 57 to 73		19
High: 67
Low: 53.6
Precip: M
RH% Min/Max: 61-97
Feel Min/Max: 54 to 67		20

Precip: M
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28293001020304

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.

Daily High/Low Plot


Description: This chart of the monthly temperature data. The bars are the observations and the dots are climatology.

Daily Rainfall


Description: This chart is of daily precipitation for the month. The red line would be an average month while the blue line and bars are observations.

Daily Average Wind Speeds


Description: This chart is of the daily average wind speeds.

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.