Hourly Weather Forecast - O'Fallon, IL

12 AM
43°F
0%
17mph
SSW
Clear
Humidity
54%
Feels like
35°F
Dew Point
27°F
1 AM
43°F
0%
17mph
SSW
Mostly Clear
Humidity
56%
Feels like
35°F
Dew Point
28°F
2 AM
42°F
0%
17mph
SSW
Mostly Clear
Humidity
57%
Feels like
34°F
Dew Point
28°F
3 AM
42°F
0%
16mph
SW
Mostly Clear
Humidity
57%
Feels like
35°F
Dew Point
28°F
4 AM
42°F
0%
15mph
SW
Mostly Clear
Humidity
57%
Feels like
35°F
Dew Point
28°F
5 AM
43°F
0%
14mph
SW
Mostly Clear
Humidity
58%
Feels like
36°F
Dew Point
29°F
6 AM
43°F
0%
13mph
SW
Mostly Clear
Humidity
59%
Feels like
36°F
Dew Point
30°F
7 AM
45°F
0%
12mph
WSW
Partly Cloudy
Humidity
60%
Feels like
39°F
Dew Point
32°F
7:14 AM
8 AM
48°F
0%
12mph
WSW
Partly Cloudy
Humidity
60%
Feels like
43°F
Dew Point
35°F
9 AM
51°F
0%
13mph
WSW
Partly Cloudy
Humidity
58%
Feels like
51°F
Dew Point
37°F
10 AM
54°F
0%
13mph
W
Partly Cloudy
Humidity
54%
Feels like
54°F
Dew Point
38°F
11 AM
57°F
0%
13mph
W
Partly Cloudy
Humidity
48%
Feels like
57°F
Dew Point
37°F
12 PM
58°F
0%
13mph
W
Partly Cloudy
Humidity
43%
Feels like
58°F
Dew Point
36°F
1 PM
59°F
0%
13mph
WNW
Mostly Sunny
Humidity
39%
Feels like
59°F
Dew Point
35°F
2 PM
59°F
0%
13mph
WNW
Mostly Sunny
Humidity
38%
Feels like
59°F
Dew Point
34°F
3 PM
59°F
0%
12mph
WNW
Mostly Sunny
Humidity
37%
Feels like
59°F
Dew Point
32°F
4 PM
58°F
0%
11mph
WNW
Sunny
Humidity
37%
Feels like
58°F
Dew Point
32°F
5 PM
56°F
0%
10mph
NW
Sunny
Humidity
37%
Feels like
56°F
Dew Point
31°F
6 PM
54°F
0%
8mph
NW
Sunny
Humidity
39%
Feels like
54°F
Dew Point
30°F
7 PM
52°F
0%
6mph
NNW
Sunny
Humidity
42%
Feels like
52°F
Dew Point
29°F
7:04 PM
8 PM
49°F
0%
6mph
NNW
Mostly Clear
Humidity
46%
Feels like
47°F
Dew Point
29°F
9 PM
47°F
0%
6mph
N
Mostly Clear
Humidity
50%
Feels like
44°F
Dew Point
30°F
10 PM
46°F
0%
6mph
N
Mostly Clear
Humidity
53%
Feels like
42°F
Dew Point
29°F
11 PM
44°F
0%
6mph
NNE
Mostly Clear
Humidity
55%
Feels like
40°F
Dew Point
28°F

Today's Severe Weather Outlook

Severe Storms Rally from Gulf Coast to Mid-Atlantic

Multiple rounds of severe storms will form today from the Gulf Coast to the Mid-Atlantic.

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for March 5, 2026

Drought Worsens Nationwide Despite Multiple Disturbances

A tornado on the ground in Hildreth, Neb., on June 14, 2014 (NOAA Photo Library/Ken Engquist).

Tornadoes and Road Safety -- Do's and Don't's

A pothole big enough to hold a traffic cone and garbage. (David Shankbone, Wikimedia Common)

Potholes: A Springtime Driving Menace

This John Deere riding mower continues to hum along. (Wikimedia Commons)

Spring Mower and Power Tool Seasonal Checklist

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide