Hourly Weather Forecast - Grinnell, IA

12 AM
-5°F
0%
8mph
NW
Very Cold
Humidity
72%
Feels like
-20°F
Dew Point
-11°F
1 AM
-5°F
0%
8mph
NW
Very Cold
Humidity
70%
Feels like
-20°F
Dew Point
-12°F
2 AM
-5°F
0%
8mph
NW
Very Cold
Humidity
69%
Feels like
-21°F
Dew Point
-13°F
3 AM
-6°F
0%
8mph
NW
Very Cold
Humidity
70%
Feels like
-21°F
Dew Point
-13°F
4 AM
-6°F
0%
7mph
NNW
Very Cold
Humidity
69%
Feels like
-20°F
Dew Point
-13°F
5 AM
-6°F
0%
6mph
NNW
Very Cold
Humidity
69%
Feels like
-19°F
Dew Point
-13°F
6 AM
-7°F
0%
5mph
NNW
Very Cold
Humidity
70%
Feels like
-18°F
Dew Point
-14°F
7 AM
-7°F
0%
4mph
NW
Very Cold
Humidity
70%
Feels like
-16°F
Dew Point
-14°F
7:30 AM
8 AM
-7°F
0%
3mph
NW
Very Cold
Humidity
72%
Feels like
-7°F
Dew Point
-13°F
9 AM
-5°F
0%
2mph
NW
Very Cold
Humidity
72%
Feels like
-5°F
Dew Point
-12°F
10 AM
-3°F
0%
2mph
WNW
Very Cold
Humidity
71%
Feels like
-3°F
Dew Point
-11°F
11 AM
-2°F
0%
1mph
WNW
Very Cold
Humidity
70%
Feels like
-2°F
Dew Point
-9°F
12 PM
0°F
0%
1mph
WNW
Sunny
Humidity
69%
Feels like
0°F
Dew Point
-8°F
1 PM
1°F
0%
1mph
WSW
Sunny
Humidity
71%
Feels like
1°F
Dew Point
-7°F
2 PM
1°F
0%
2mph
SW
Sunny
Humidity
72%
Feels like
1°F
Dew Point
-6°F
3 PM
1°F
0%
2mph
SSW
Sunny
Humidity
74%
Feels like
1°F
Dew Point
-5°F
4 PM
0°F
0%
3mph
S
Sunny
Humidity
75%
Feels like
0°F
Dew Point
-6°F
4:40 PM
5 PM
-1°F
0%
3mph
S
Very Cold
Humidity
77%
Feels like
-9°F
Dew Point
-7°F
6 PM
-1°F
0%
4mph
S
Very Cold
Humidity
77%
Feels like
-11°F
Dew Point
-7°F
7 PM
-1°F
0%
5mph
S
Very Cold
Humidity
79%
Feels like
-12°F
Dew Point
-6°F
8 PM
0°F
0%
6mph
S
Clear
Humidity
77%
Feels like
-12°F
Dew Point
-5°F
9 PM
2°F
0%
8mph
S
Clear
Humidity
78%
Feels like
-12°F
Dew Point
-3°F
10 PM
4°F
0%
9mph
S
Clear
Humidity
77%
Feels like
-10°F
Dew Point
-2°F
11 PM
5°F
0%
9mph
S
Clear
Humidity
76%
Feels like
-9°F
Dew Point
-1°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

In the path of a weak low-pressure system that brings snow to the Midwest and Northeast, extreme cold weather and brutally cold wind chill values will bring a bitter cold to much of the Nation.

Snowfall forecast through Sunday evening.

Snow Spreads Across the Ohio Valley into the Mid-Atlantic

Weekend Weather Outlook

Weekend Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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