Hourly Weather Forecast - Grimes, IA

12 AM
35°F
0%
10mph
S
Mostly Clear
Humidity
61%
Feels like
27°F
Dew Point
23°F
1 AM
36°F
0%
10mph
SSW
Mostly Clear
Humidity
61%
Feels like
28°F
Dew Point
24°F
2 AM
37°F
0%
10mph
SSW
Mostly Clear
Humidity
61%
Feels like
29°F
Dew Point
24°F
3 AM
37°F
0%
10mph
SSW
Partly Cloudy
Humidity
62%
Feels like
30°F
Dew Point
25°F
4 AM
37°F
0%
9mph
SW
Partly Cloudy
Humidity
63%
Feels like
31°F
Dew Point
26°F
5 AM
37°F
0%
8mph
SW
Mostly Cloudy
Humidity
65%
Feels like
31°F
Dew Point
27°F
6 AM
37°F
0%
8mph
WSW
Cloudy
Humidity
68%
Feels like
31°F
Dew Point
28°F
7 AM
37°F
0%
8mph
W
Cloudy
Humidity
71%
Feels like
31°F
Dew Point
28°F
7:38 AM
8 AM
38°F
0%
10mph
NW
Cloudy
Humidity
71%
Feels like
31°F
Dew Point
29°F
9 AM
39°F
0%
11mph
NNW
Cloudy
Humidity
67%
Feels like
32°F
Dew Point
29°F
10 AM
41°F
0%
12mph
NNW
Cloudy
Humidity
63%
Feels like
34°F
Dew Point
29°F
11 AM
42°F
0%
12mph
NNW
Cloudy
Humidity
57%
Feels like
35°F
Dew Point
28°F
12 PM
42°F
0%
12mph
NNW
Cloudy
Humidity
53%
Feels like
36°F
Dew Point
26°F
1 PM
42°F
0%
12mph
NNW
Mostly Cloudy
Humidity
50%
Feels like
36°F
Dew Point
25°F
2 PM
42°F
0%
11mph
NW
Partly Cloudy
Humidity
49%
Feels like
36°F
Dew Point
24°F
3 PM
40°F
0%
10mph
NW
Partly Cloudy
Humidity
51%
Feels like
34°F
Dew Point
24°F
4 PM
38°F
0%
9mph
NW
Mostly Sunny
Humidity
54%
Feels like
32°F
Dew Point
23°F
4:47 PM
5 PM
36°F
0%
8mph
WNW
Clear
Humidity
58%
Feels like
30°F
Dew Point
23°F
6 PM
35°F
0%
7mph
WNW
Clear
Humidity
62%
Feels like
28°F
Dew Point
23°F
7 PM
33°F
0%
7mph
W
Clear
Humidity
64%
Feels like
27°F
Dew Point
23°F
8 PM
33°F
0%
8mph
W
Clear
Humidity
64%
Feels like
26°F
Dew Point
22°F
9 PM
32°F
0%
8mph
W
Clear
Humidity
65%
Feels like
25°F
Dew Point
22°F
10 PM
32°F
0%
7mph
W
Clear
Humidity
65%
Feels like
25°F
Dew Point
21°F
11 PM
31°F
0%
7mph
W
Clear
Humidity
67%
Feels like
24°F
Dew Point
21°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's 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 person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

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

Cold Air Damming - Cause And Effects

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