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Monthly
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Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grinnell, IL
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January
Average Temperature
High
6°
Feels 3
Low
-4°
Feels -7
Average Precipitation
7 Days
Rain amount
43.8mm
Snow amount
6.2cm
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Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
20°
9
13°
10
9°
11
3°
12
8°
13
12°
14
5°
15
2°
16
5°
17
4°
18
2°
19
11°
20
-3°
21
6°
22
8°
23
24
25
26
27
28
29
30
31
Forecast
Thursday, January 8, 2026
Day
20°
Feels 20
Wind
27 km/h S
Gust
40 km/h
Humidity
66%
P.O.P
40%
Rain
<1 mm
Night
12°
Feels 10
Wind
35 km/h SW
Gust
53 km/h
Humidity
94%
P.O.P
100%
Rain
~5 mm
Historical Averages
Jan 8
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.