Hourly Weather Forecast - O'Fallon, IL

12 AM
64°F
0%
5mph
NE
Partly Cloudy
Humidity
63%
Feels like
64°F
Dew Point
51°F
1 AM
61°F
0%
5mph
ENE
Mostly Clear
Humidity
68%
Feels like
61°F
Dew Point
51°F
2 AM
59°F
0%
5mph
ENE
Clear
Humidity
72%
Feels like
59°F
Dew Point
50°F
3 AM
57°F
0%
5mph
ENE
Clear
Humidity
77%
Feels like
57°F
Dew Point
50°F
4 AM
55°F
0%
5mph
ENE
Clear
Humidity
82%
Feels like
55°F
Dew Point
49°F
5 AM
53°F
0%
5mph
ENE
Clear
Humidity
87%
Feels like
53°F
Dew Point
50°F
6 AM
53°F
0%
5mph
E
Clear
Humidity
88%
Feels like
53°F
Dew Point
50°F
7 AM
55°F
0%
5mph
E
Clear
Humidity
83%
Feels like
55°F
Dew Point
50°F
7:02 AM
8 AM
59°F
0%
5mph
E
Sunny
Humidity
75%
Feels like
59°F
Dew Point
51°F
9 AM
62°F
0%
5mph
ESE
Sunny
Humidity
68%
Feels like
62°F
Dew Point
52°F
10 AM
66°F
0%
4mph
ESE
Mostly Sunny
Humidity
61%
Feels like
66°F
Dew Point
53°F
11 AM
70°F
0%
4mph
SE
Sunny
Humidity
56%
Feels like
70°F
Dew Point
54°F
12 PM
74°F
0%
3mph
SSE
Sunny
Humidity
50%
Feels like
74°F
Dew Point
54°F
1 PM
77°F
0%
3mph
S
Sunny
Humidity
46%
Feels like
77°F
Dew Point
54°F
2 PM
79°F
0%
4mph
SSW
Sunny
Humidity
43%
Feels like
79°F
Dew Point
54°F
3 PM
80°F
0%
4mph
SW
Sunny
Humidity
41%
Feels like
80°F
Dew Point
54°F
4 PM
80°F
0%
5mph
SW
Sunny
Humidity
41%
Feels like
80°F
Dew Point
54°F
5 PM
79°F
0%
5mph
SSW
Sunny
Humidity
43%
Feels like
79°F
Dew Point
54°F
6 PM
77°F
0%
5mph
SSW
Sunny
Humidity
46%
Feels like
77°F
Dew Point
55°F
7 PM
74°F
0%
5mph
S
Sunny
Humidity
50%
Feels like
74°F
Dew Point
55°F
7:12 PM
8 PM
72°F
0%
6mph
S
Clear
Humidity
55%
Feels like
72°F
Dew Point
55°F
9 PM
70°F
0%
7mph
S
Clear
Humidity
60%
Feels like
70°F
Dew Point
56°F
10 PM
68°F
0%
7mph
S
Clear
Humidity
65%
Feels like
68°F
Dew Point
56°F
11 PM
67°F
0%
8mph
S
Clear
Humidity
69%
Feels like
67°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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