Hourly Weather Forecast - O'Fallon, MO

1 PM
19°F
0%
12mph
NW
Sunny
Humidity
48%
Feels like
6°F
Dew Point
2°F
2 PM
19°F
0%
11mph
WNW
Sunny
Humidity
48%
Feels like
7°F
Dew Point
3°F
3 PM
19°F
0%
10mph
WNW
Sunny
Humidity
50%
Feels like
8°F
Dew Point
3°F
4 PM
19°F
0%
8mph
WNW
Sunny
Humidity
51%
Feels like
9°F
Dew Point
3°F
5 PM
18°F
0%
6mph
WNW
Sunny
Humidity
52%
Feels like
10°F
Dew Point
3°F
5:09 PM
6 PM
17°F
0%
3mph
W
Clear
Humidity
49%
Feels like
12°F
Dew Point
1°F
7 PM
16°F
0%
3mph
W
Clear
Humidity
51%
Feels like
16°F
Dew Point
1°F
8 PM
16°F
0%
3mph
WSW
Clear
Humidity
53%
Feels like
16°F
Dew Point
2°F
9 PM
15°F
0%
3mph
WSW
Clear
Humidity
55%
Feels like
10°F
Dew Point
2°F
10 PM
14°F
0%
3mph
WSW
Mostly Clear
Humidity
54%
Feels like
9°F
Dew Point
1°F
11 PM
14°F
0%
3mph
WSW
Mostly Clear
Humidity
54%
Feels like
8°F
Dew Point
0°F

Snow Forecast through Sunday

Series of Weather Systems Cover Great Lakes, East in Snow

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

Monday's Weather Outlook

Today'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

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