Hourly Weather Forecast - O'Fallon, MO

12 AM
57°F
10%
8mph
SSE
Clear
Humidity
66%
Feels like
57°F
Dew Point
46°F
1 AM
56°F
10%
8mph
SSE
Clear
Humidity
69%
Feels like
56°F
Dew Point
46°F
2 AM
56°F
10%
8mph
S
Clear
Humidity
72%
Feels like
56°F
Dew Point
47°F
3 AM
55°F
10%
9mph
S
Clear
Humidity
75%
Feels like
55°F
Dew Point
47°F
4 AM
55°F
10%
9mph
S
Clear
Humidity
77%
Feels like
55°F
Dew Point
48°F
5 AM
55°F
10%
9mph
S
Clear
Humidity
79%
Feels like
55°F
Dew Point
49°F
6 AM
56°F
10%
9mph
S
Clear
Humidity
79%
Feels like
56°F
Dew Point
50°F
6:57 AM
7 AM
58°F
10%
9mph
S
Sunny
Humidity
76%
Feels like
58°F
Dew Point
51°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

Today's Weather Outlook

Today's Weather Outlook

Weekend Weather Preview

Weekend Weather Preview

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

(Image provided by Pixabay.com)

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