Hourly Weather Forecast - O'Fallon, IL

12 AM
57°F
0%
10mph
S
Clear
Humidity
66%
Feels like
57°F
Dew Point
46°F
1 AM
57°F
0%
10mph
S
Clear
Humidity
67%
Feels like
57°F
Dew Point
46°F
2 AM
56°F
0%
11mph
S
Clear
Humidity
68%
Feels like
56°F
Dew Point
46°F
3 AM
56°F
0%
10mph
S
Clear
Humidity
71%
Feels like
56°F
Dew Point
47°F
4 AM
56°F
0%
10mph
S
Clear
Humidity
73%
Feels like
56°F
Dew Point
47°F
5 AM
56°F
0%
10mph
S
Clear
Humidity
75%
Feels like
56°F
Dew Point
48°F
6 AM
56°F
0%
10mph
S
Clear
Humidity
76%
Feels like
56°F
Dew Point
49°F
6:54 AM
7 AM
58°F
0%
10mph
S
Mostly Sunny
Humidity
75%
Feels like
58°F
Dew Point
51°F
8 AM
62°F
0%
11mph
SSW
Mostly Sunny
Humidity
70%
Feels like
62°F
Dew Point
52°F
9 AM
67°F
0%
13mph
SSW
Mostly Sunny
Humidity
62%
Feels like
67°F
Dew Point
54°F
10 AM
71°F
0%
14mph
SSW
Partly Cloudy
Humidity
56%
Feels like
71°F
Dew Point
55°F
11 AM
75°F
0%
14mph
SSW
Partly Cloudy
Humidity
51%
Feels like
75°F
Dew Point
56°F
12 PM
78°F
0%
15mph
SW
Partly Cloudy
Humidity
47%
Feels like
78°F
Dew Point
56°F
1 PM
80°F
0%
15mph
SW
Partly Cloudy
Humidity
44%
Feels like
80°F
Dew Point
56°F

Saturday's High Temperature Outlook

Scorching Heat Continues Across the Southwest

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

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

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

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

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

When Does Spring Begin?

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