Hourly Weather Forecast - O'Fallon, IL

12 AM
37°F
90%
11mph
ENE
Rain
Humidity
75%
Feels like
30°F
Dew Point
30°F
1 AM
36°F
80%
11mph
ENE
80% Chance of Rain
Humidity
82%
Feels like
28°F
Dew Point
31°F
2 AM
35°F
70%
10mph
ENE
70% Chance of Rain
Humidity
89%
Feels like
27°F
Dew Point
32°F
3 AM
34°F
60%
10mph
E
60% Chance of Light Rain
Humidity
93%
Feels like
26°F
Dew Point
32°F
4 AM
34°F
50%
10mph
ENE
50% Chance of Light Rain
Humidity
94%
Feels like
26°F
Dew Point
32°F
5 AM
34°F
40%
10mph
ENE
40% Chance of Light Rain
Humidity
93%
Feels like
27°F
Dew Point
33°F
6 AM
36°F
30%
10mph
E
30% Chance of Light Rain
Humidity
91%
Feels like
28°F
Dew Point
33°F
6:30 AM
7 AM
38°F
20%
9mph
E
Mostly Cloudy
Humidity
88%
Feels like
31°F
Dew Point
34°F
8 AM
40°F
10%
9mph
E
Cloudy
Humidity
83%
Feels like
33°F
Dew Point
35°F
9 AM
41°F
10%
9mph
E
Cloudy
Humidity
79%
Feels like
36°F
Dew Point
35°F
10 AM
43°F
10%
9mph
E
Cloudy
Humidity
74%
Feels like
38°F
Dew Point
35°F
11 AM
45°F
10%
9mph
E
Mostly Cloudy
Humidity
70%
Feels like
40°F
Dew Point
36°F
12 PM
46°F
0%
9mph
E
Mostly Cloudy
Humidity
67%
Feels like
42°F
Dew Point
36°F
1 PM
47°F
0%
8mph
E
Mostly Cloudy
Humidity
65%
Feels like
43°F
Dew Point
36°F
2 PM
48°F
0%
8mph
E
Mostly Cloudy
Humidity
66%
Feels like
44°F
Dew Point
37°F
3 PM
47°F
0%
7mph
E
Mostly Cloudy
Humidity
68%
Feels like
44°F
Dew Point
37°F
4 PM
46°F
0%
6mph
E
Mostly Cloudy
Humidity
72%
Feels like
43°F
Dew Point
38°F
5 PM
45°F
0%
6mph
E
Mostly Cloudy
Humidity
77%
Feels like
41°F
Dew Point
38°F
5:53 PM
6 PM
43°F
0%
6mph
E
Mostly Cloudy
Humidity
82%
Feels like
40°F
Dew Point
38°F
7 PM
42°F
0%
6mph
E
Partly Cloudy
Humidity
86%
Feels like
38°F
Dew Point
38°F
8 PM
41°F
0%
5mph
E
Partly Cloudy
Humidity
88%
Feels like
38°F
Dew Point
38°F
9 PM
40°F
10%
5mph
E
Mostly Cloudy
Humidity
90%
Feels like
37°F
Dew Point
38°F
10 PM
40°F
10%
4mph
ESE
Cloudy
Humidity
92%
Feels like
36°F
Dew Point
37°F
11 PM
39°F
10%
5mph
ESE
Cloudy
Humidity
94%
Feels like
36°F
Dew Point
37°F

Snow and Ice Accumulations through Tuesday AM

Wintry Disturbance Bisects U.S. Mid-Latitudes

A wintry disturbance will bring icing and light snow from the central Plains today through the Northeast on Tuesday.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

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