Hourly Weather Forecast - Grimes, IA

12 AM
41°F
0%
7mph
SSW
Hazy
Humidity
91%
Feels like
37°F
Dew Point
39°F
1 AM
41°F
0%
7mph
SSW
Hazy
Humidity
91%
Feels like
36°F
Dew Point
38°F
2 AM
40°F
0%
6mph
SSW
Hazy
Humidity
91%
Feels like
36°F
Dew Point
38°F
3 AM
40°F
0%
6mph
SW
Hazy
Humidity
91%
Feels like
35°F
Dew Point
37°F
4 AM
40°F
0%
6mph
SW
Hazy
Humidity
91%
Feels like
35°F
Dew Point
37°F
5 AM
39°F
0%
6mph
WSW
Mostly Clear
Humidity
90%
Feels like
35°F
Dew Point
36°F
6 AM
39°F
0%
6mph
WSW
Partly Cloudy
Humidity
90%
Feels like
34°F
Dew Point
36°F
7 AM
38°F
0%
5mph
WSW
Partly Cloudy
Humidity
89%
Feels like
35°F
Dew Point
36°F
7:39 AM
8 AM
39°F
0%
5mph
W
Partly Cloudy
Humidity
88%
Feels like
35°F
Dew Point
36°F
9 AM
40°F
0%
5mph
W
Mostly Sunny
Humidity
83%
Feels like
37°F
Dew Point
36°F
10 AM
42°F
0%
6mph
W
Mostly Sunny
Humidity
78%
Feels like
39°F
Dew Point
36°F
11 AM
45°F
0%
6mph
NW
Partly Cloudy
Humidity
72%
Feels like
41°F
Dew Point
36°F
12 PM
47°F
0%
6mph
NW
Partly Cloudy
Humidity
67%
Feels like
43°F
Dew Point
36°F
1 PM
47°F
0%
7mph
NNW
Partly Cloudy
Humidity
64%
Feels like
44°F
Dew Point
36°F
2 PM
47°F
0%
6mph
N
Partly Cloudy
Humidity
64%
Feels like
43°F
Dew Point
35°F
3 PM
45°F
0%
7mph
N
Mostly Sunny
Humidity
66%
Feels like
41°F
Dew Point
35°F
4 PM
43°F
0%
6mph
NNE
Mostly Sunny
Humidity
70%
Feels like
39°F
Dew Point
34°F
4:48 PM
5 PM
40°F
0%
6mph
NE
Partly Cloudy
Humidity
77%
Feels like
36°F
Dew Point
33°F
6 PM
38°F
0%
6mph
NE
Partly Cloudy
Humidity
81%
Feels like
33°F
Dew Point
33°F
7 PM
37°F
0%
6mph
ENE
Partly Cloudy
Humidity
86%
Feels like
32°F
Dew Point
33°F
8 PM
36°F
0%
6mph
E
Partly Cloudy
Humidity
86%
Feels like
31°F
Dew Point
32°F
9 PM
35°F
0%
6mph
E
Partly Cloudy
Humidity
88%
Feels like
30°F
Dew Point
32°F
10 PM
34°F
10%
5mph
E
Partly Cloudy
Humidity
88%
Feels like
30°F
Dew Point
31°F
11 PM
34°F
10%
5mph
E
Partly Cloudy
Humidity
88%
Feels like
29°F
Dew Point
31°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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