Hourly Weather Forecast - O'Fallon, MO

12 AM
32°F
0%
11mph
SSW
Cloudy
Humidity
52%
Feels like
23°F
Dew Point
17°F
1 AM
33°F
0%
12mph
SSW
Cloudy
Humidity
55%
Feels like
24°F
Dew Point
19°F
2 AM
34°F
0%
13mph
SSW
Cloudy
Humidity
58%
Feels like
25°F
Dew Point
21°F
3 AM
35°F
0%
12mph
SW
Cloudy
Humidity
64%
Feels like
26°F
Dew Point
24°F
4 AM
35°F
0%
12mph
SW
Mostly Cloudy
Humidity
67%
Feels like
27°F
Dew Point
25°F
5 AM
35°F
0%
11mph
SW
Partly Cloudy
Humidity
71%
Feels like
27°F
Dew Point
27°F
6 AM
35°F
0%
11mph
SW
Clear
Humidity
73%
Feels like
27°F
Dew Point
27°F
7 AM
35°F
0%
10mph
WSW
Clear
Humidity
76%
Feels like
28°F
Dew Point
29°F
7:17 AM
8 AM
36°F
0%
11mph
WSW
Sunny
Humidity
79%
Feels like
29°F
Dew Point
30°F
9 AM
38°F
0%
11mph
W
Sunny
Humidity
76%
Feels like
30°F
Dew Point
31°F
10 AM
39°F
0%
12mph
W
Sunny
Humidity
74%
Feels like
31°F
Dew Point
31°F
11 AM
40°F
0%
12mph
W
Sunny
Humidity
71%
Feels like
33°F
Dew Point
31°F
12 PM
41°F
0%
12mph
W
Sunny
Humidity
64%
Feels like
34°F
Dew Point
30°F
1 PM
42°F
0%
11mph
W
Sunny
Humidity
60%
Feels like
35°F
Dew Point
29°F
2 PM
42°F
0%
11mph
W
Sunny
Humidity
54%
Feels like
36°F
Dew Point
26°F
3 PM
41°F
0%
10mph
W
Sunny
Humidity
51%
Feels like
35°F
Dew Point
25°F
4 PM
40°F
0%
8mph
W
Mostly Sunny
Humidity
53%
Feels like
35°F
Dew Point
24°F
5 PM
38°F
0%
6mph
WSW
Partly Cloudy
Humidity
57%
Feels like
34°F
Dew Point
24°F
5:11 PM
6 PM
37°F
0%
5mph
WSW
Partly Cloudy
Humidity
60%
Feels like
33°F
Dew Point
24°F
7 PM
36°F
0%
6mph
SW
Partly Cloudy
Humidity
64%
Feels like
31°F
Dew Point
25°F
8 PM
35°F
0%
6mph
WSW
Partly Cloudy
Humidity
64%
Feels like
30°F
Dew Point
24°F
9 PM
34°F
0%
7mph
WSW
Partly Cloudy
Humidity
63%
Feels like
29°F
Dew Point
23°F
10 PM
34°F
0%
7mph
WSW
Partly Cloudy
Humidity
63%
Feels like
28°F
Dew Point
23°F
11 PM
34°F
0%
8mph
W
Partly Cloudy
Humidity
64%
Feels like
27°F
Dew Point
23°F

Snow Forecast through Sunday

Unrelenting Storm Track Brings Snow to Great Lakes & Eastern U.S.

Two main areas of low pressure will produce snow in the Upper Midwest, Great Lakes and Eastern U.S.

Monday's Weather Outlook

Monday's Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

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

Safety Tips For Icy Surfaces

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide