Hourly Weather Forecast - O'Fallon, MO

10 AM
43°F
0%
10mph
SW
Mostly Sunny
Humidity
70%
Feels like
37°F
Dew Point
34°F
11 AM
46°F
0%
10mph
SW
Mostly Sunny
Humidity
66%
Feels like
41°F
Dew Point
35°F
12 PM
49°F
0%
11mph
SW
Partly Cloudy
Humidity
62%
Feels like
44°F
Dew Point
36°F
1 PM
50°F
0%
11mph
SW
Partly Cloudy
Humidity
59%
Feels like
50°F
Dew Point
37°F
2 PM
51°F
0%
11mph
SSW
Partly Cloudy
Humidity
59%
Feels like
51°F
Dew Point
37°F
3 PM
51°F
0%
12mph
SSW
Partly Cloudy
Humidity
59%
Feels like
51°F
Dew Point
37°F
4 PM
50°F
0%
12mph
SSW
Partly Cloudy
Humidity
60%
Feels like
50°F
Dew Point
37°F
4:40 PM
5 PM
50°F
0%
12mph
SSW
Partly Cloudy
Humidity
60%
Feels like
45°F
Dew Point
37°F
6 PM
49°F
0%
13mph
SSW
Partly Cloudy
Humidity
60%
Feels like
45°F
Dew Point
36°F
7 PM
49°F
0%
14mph
SSW
Partly Cloudy
Humidity
59%
Feels like
44°F
Dew Point
36°F
8 PM
49°F
0%
15mph
SW
Partly Cloudy
Humidity
59%
Feels like
44°F
Dew Point
35°F
9 PM
49°F
0%
15mph
SW
Mostly Cloudy
Humidity
59%
Feels like
43°F
Dew Point
35°F
10 PM
49°F
10%
16mph
SW
Mostly Cloudy
Humidity
58%
Feels like
44°F
Dew Point
35°F
11 PM
49°F
10%
16mph
SW
Mostly Cloudy
Humidity
59%
Feels like
43°F
Dew Point
35°F

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Today's Weather Outlook

Today's 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

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide