Hourly Weather Forecast - O'Fallon, IL

10 AM
66°F
0%
6mph
WSW
Sunny
Humidity
60%
Feels like
66°F
Dew Point
52°F
11 AM
72°F
0%
7mph
W
Mostly Sunny
Humidity
51%
Feels like
72°F
Dew Point
53°F
12 PM
77°F
0%
8mph
W
Sunny
Humidity
43%
Feels like
77°F
Dew Point
53°F
1 PM
81°F
0%
9mph
W
Sunny
Humidity
37%
Feels like
80°F
Dew Point
52°F
2 PM
84°F
0%
10mph
W
Sunny
Humidity
33%
Feels like
82°F
Dew Point
51°F
3 PM
85°F
0%
10mph
W
Mostly Sunny
Humidity
30%
Feels like
83°F
Dew Point
50°F
4 PM
84°F
0%
11mph
W
Mostly Sunny
Humidity
30%
Feels like
82°F
Dew Point
50°F
5 PM
82°F
0%
9mph
W
Mostly Sunny
Humidity
32%
Feels like
81°F
Dew Point
49°F
6 PM
79°F
0%
7mph
WNW
Mostly Sunny
Humidity
36%
Feels like
79°F
Dew Point
50°F
7 PM
75°F
0%
6mph
WNW
Mostly Sunny
Humidity
41%
Feels like
75°F
Dew Point
50°F
7:11 PM
8 PM
72°F
0%
6mph
NW
Partly Cloudy
Humidity
46%
Feels like
72°F
Dew Point
50°F
9 PM
70°F
0%
6mph
NNW
Partly Cloudy
Humidity
51%
Feels like
70°F
Dew Point
51°F
10 PM
67°F
0%
6mph
N
Partly Cloudy
Humidity
56%
Feels like
67°F
Dew Point
51°F
11 PM
64°F
0%
6mph
N
Partly Cloudy
Humidity
61%
Feels like
64°F
Dew Point
50°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.

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Today's Weather Outlook

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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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