Hourly Weather Forecast - Grinnell, IA

12 AM
38°F
10%
17mph
W
Cloudy
Humidity
83%
Feels like
28°F
Dew Point
33°F
1 AM
37°F
10%
18mph
WNW
Cloudy
Humidity
83%
Feels like
27°F
Dew Point
32°F
2 AM
36°F
10%
20mph
WNW
Mostly Cloudy
Humidity
84%
Feels like
25°F
Dew Point
31°F
3 AM
34°F
10%
21mph
WNW
Windy
Humidity
84%
Feels like
22°F
Dew Point
30°F
4 AM
32°F
10%
21mph
WNW
Windy
Humidity
85%
Feels like
20°F
Dew Point
28°F
5 AM
30°F
10%
20mph
WNW
Mostly Cloudy
Humidity
86%
Feels like
18°F
Dew Point
27°F
6 AM
29°F
10%
19mph
NW
Mostly Cloudy
Humidity
86%
Feels like
16°F
Dew Point
25°F
7 AM
28°F
10%
18mph
NW
Mostly Cloudy
Humidity
85%
Feels like
15°F
Dew Point
24°F
7:27 AM
8 AM
28°F
10%
17mph
NW
Mostly Cloudy
Humidity
83%
Feels like
15°F
Dew Point
23°F
9 AM
28°F
10%
16mph
NW
Mostly Cloudy
Humidity
80%
Feels like
16°F
Dew Point
22°F
10 AM
27°F
20%
15mph
NW
Mostly Cloudy
Humidity
79%
Feels like
15°F
Dew Point
21°F
11 AM
26°F
20%
15mph
NW
Mostly Cloudy
Humidity
79%
Feels like
14°F
Dew Point
20°F
12 PM
25°F
20%
15mph
NW
Mostly Cloudy
Humidity
78%
Feels like
13°F
Dew Point
19°F
1 PM
24°F
30%
14mph
NW
30% Chance Freezing Rain
Humidity
78%
Feels like
12°F
Dew Point
18°F
2 PM
23°F
30%
13mph
WNW
30% Chance Freezing Rain
Humidity
79%
Feels like
11°F
Dew Point
17°F
3 PM
22°F
20%
11mph
WNW
Cloudy
Humidity
80%
Feels like
10°F
Dew Point
17°F
4 PM
21°F
20%
10mph
WNW
Mostly Cloudy
Humidity
81%
Feels like
10°F
Dew Point
16°F
4:40 PM
5 PM
20°F
20%
8mph
WNW
Partly Cloudy
Humidity
82%
Feels like
10°F
Dew Point
15°F
6 PM
19°F
10%
7mph
NW
Partly Cloudy
Humidity
83%
Feels like
10°F
Dew Point
15°F
7 PM
18°F
10%
6mph
NW
Partly Cloudy
Humidity
85%
Feels like
10°F
Dew Point
14°F
8 PM
17°F
10%
4mph
NW
Mostly Cloudy
Humidity
88%
Feels like
11°F
Dew Point
14°F
9 PM
16°F
10%
3mph
NW
Cloudy
Humidity
90%
Feels like
10°F
Dew Point
13°F
10 PM
15°F
10%
3mph
NNW
Cloudy
Humidity
91%
Feels like
10°F
Dew Point
13°F
11 PM
14°F
10%
3mph
NNW
Cloudy
Humidity
92%
Feels like
8°F
Dew Point
12°F

Snowfall Forecast Through Saturday

Snowfall to Pack Slopes in the Rockies

Hefty snowpack additions are expected into the weekend for the Cascades and northern Rockies.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Image courtesy of PeakPX.

Top 10 Winter Energy Saving Tips

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide