Hourly Weather Forecast - O'Fallon, MO

12 AM
29°F
0%
13mph
NW
Partly Cloudy
Humidity
55%
Feels like
19°F
Dew Point
15°F
1 AM
28°F
0%
14mph
NW
Partly Cloudy
Humidity
54%
Feels like
16°F
Dew Point
13°F
2 AM
25°F
0%
15mph
NW
Mostly Cloudy
Humidity
52%
Feels like
13°F
Dew Point
10°F
3 AM
23°F
0%
16mph
NW
Partly Cloudy
Humidity
50%
Feels like
9°F
Dew Point
7°F
4 AM
20°F
0%
16mph
NW
Mostly Clear
Humidity
49%
Feels like
5°F
Dew Point
3°F
5 AM
17°F
0%
16mph
NW
Clear
Humidity
48%
Feels like
2°F
Dew Point
1°F
6 AM
14°F
0%
15mph
NW
Clear
Humidity
52%
Feels like
-2°F
Dew Point
0°F
7 AM
13°F
0%
15mph
NW
Clear
Humidity
53%
Feels like
-3°F
Dew Point
-1°F
7:18 AM
8 AM
13°F
0%
15mph
NW
Sunny
Humidity
52%
Feels like
-3°F
Dew Point
-1°F
9 AM
14°F
0%
15mph
NW
Mostly Sunny
Humidity
49%
Feels like
-1°F
Dew Point
-2°F
10 AM
15°F
0%
14mph
NW
Partly Cloudy
Humidity
45%
Feels like
1°F
Dew Point
-2°F
11 AM
17°F
0%
14mph
NW
Partly Cloudy
Humidity
43%
Feels like
2°F
Dew Point
-2°F
12 PM
19°F
0%
13mph
WNW
Sunny
Humidity
40%
Feels like
5°F
Dew Point
-2°F
1 PM
20°F
0%
12mph
WNW
Sunny
Humidity
38%
Feels like
7°F
Dew Point
-2°F
2 PM
21°F
0%
11mph
WNW
Sunny
Humidity
36%
Feels like
9°F
Dew Point
-2°F
3 PM
21°F
0%
10mph
WNW
Sunny
Humidity
35%
Feels like
10°F
Dew Point
-3°F
4 PM
20°F
0%
8mph
WNW
Sunny
Humidity
36%
Feels like
10°F
Dew Point
-2°F
5 PM
19°F
0%
6mph
WNW
Sunny
Humidity
39%
Feels like
11°F
Dew Point
-2°F
5:09 PM
6 PM
18°F
0%
4mph
W
Clear
Humidity
41%
Feels like
12°F
Dew Point
-2°F
7 PM
17°F
0%
3mph
W
Clear
Humidity
45%
Feels like
12°F
Dew Point
-1°F
8 PM
17°F
0%
3mph
W
Clear
Humidity
45%
Feels like
12°F
Dew Point
-1°F
9 PM
17°F
0%
4mph
W
Clear
Humidity
45%
Feels like
10°F
Dew Point
-1°F
10 PM
17°F
0%
4mph
W
Clear
Humidity
44%
Feels like
10°F
Dew Point
-1°F
11 PM
17°F
0%
4mph
WSW
Clear
Humidity
43%
Feels like
11°F
Dew Point
-2°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