Hourly Weather Forecast - Grimes, IA

12 AM
35°F
10%
10mph
SSE
Mostly Cloudy
Humidity
63%
Feels like
28°F
Dew Point
24°F
1 AM
35°F
10%
10mph
SSE
Partly Cloudy
Humidity
64%
Feels like
28°F
Dew Point
24°F
2 AM
35°F
10%
9mph
SSE
Partly Cloudy
Humidity
64%
Feels like
28°F
Dew Point
24°F
3 AM
35°F
0%
9mph
SSE
Partly Cloudy
Humidity
65%
Feels like
28°F
Dew Point
24°F
4 AM
35°F
0%
9mph
SSE
Partly Cloudy
Humidity
66%
Feels like
27°F
Dew Point
25°F
5 AM
35°F
0%
9mph
SSE
Partly Cloudy
Humidity
67%
Feels like
27°F
Dew Point
25°F
6 AM
34°F
0%
9mph
SSE
Partly Cloudy
Humidity
67%
Feels like
27°F
Dew Point
25°F
7 AM
35°F
0%
10mph
SSE
Mostly Clear
Humidity
67%
Feels like
27°F
Dew Point
25°F
7:39 AM
8 AM
36°F
0%
10mph
S
Sunny
Humidity
66%
Feels like
29°F
Dew Point
26°F
9 AM
38°F
0%
10mph
S
Sunny
Humidity
62%
Feels like
32°F
Dew Point
27°F
10 AM
41°F
0%
10mph
S
Sunny
Humidity
58%
Feels like
35°F
Dew Point
28°F
11 AM
44°F
0%
11mph
S
Sunny
Humidity
55%
Feels like
39°F
Dew Point
29°F
12 PM
46°F
0%
11mph
S
Sunny
Humidity
54%
Feels like
41°F
Dew Point
31°F
1 PM
48°F
0%
11mph
S
Sunny
Humidity
54%
Feels like
43°F
Dew Point
32°F
2 PM
48°F
0%
11mph
S
Sunny
Humidity
56%
Feels like
44°F
Dew Point
33°F
3 PM
47°F
0%
10mph
S
Sunny
Humidity
61%
Feels like
43°F
Dew Point
35°F
4 PM
46°F
0%
9mph
S
Sunny
Humidity
66%
Feels like
41°F
Dew Point
35°F
4:48 PM
5 PM
44°F
0%
9mph
S
Clear
Humidity
72%
Feels like
40°F
Dew Point
36°F
6 PM
43°F
0%
8mph
S
Clear
Humidity
77%
Feels like
39°F
Dew Point
37°F
7 PM
43°F
0%
8mph
S
Clear
Humidity
81%
Feels like
38°F
Dew Point
37°F
8 PM
42°F
0%
8mph
S
Clear
Humidity
84%
Feels like
38°F
Dew Point
38°F
9 PM
42°F
0%
8mph
S
Clear
Humidity
86%
Feels like
37°F
Dew Point
38°F
10 PM
42°F
0%
7mph
S
Clear
Humidity
88%
Feels like
37°F
Dew Point
39°F
11 PM
42°F
0%
7mph
SSW
Mostly Clear
Humidity
89%
Feels like
37°F
Dew Point
39°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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