Hourly Weather Forecast - O'Fallon, IL

9 AM
35°F
0%
11mph
NE
Partly Cloudy
Humidity
68%
Feels like
27°F
Dew Point
25°F
10 AM
38°F
0%
11mph
NE
Partly Cloudy
Humidity
60%
Feels like
31°F
Dew Point
26°F
11 AM
41°F
0%
10mph
NE
Partly Cloudy
Humidity
54%
Feels like
35°F
Dew Point
26°F
12 PM
44°F
0%
10mph
NE
Partly Cloudy
Humidity
49%
Feels like
38°F
Dew Point
26°F
1 PM
45°F
0%
10mph
NE
Mostly Cloudy
Humidity
47%
Feels like
40°F
Dew Point
26°F
2 PM
46°F
0%
11mph
ENE
Mostly Cloudy
Humidity
46%
Feels like
40°F
Dew Point
26°F
3 PM
46°F
0%
11mph
ENE
Mostly Cloudy
Humidity
47%
Feels like
40°F
Dew Point
26°F
4 PM
45°F
0%
11mph
ENE
Cloudy
Humidity
48%
Feels like
40°F
Dew Point
26°F
5 PM
44°F
0%
10mph
ENE
Mostly Cloudy
Humidity
50%
Feels like
38°F
Dew Point
27°F
5:52 PM
6 PM
43°F
10%
9mph
ENE
Cloudy
Humidity
52%
Feels like
37°F
Dew Point
26°F
7 PM
42°F
10%
10mph
ENE
Cloudy
Humidity
54%
Feels like
36°F
Dew Point
26°F
8 PM
41°F
20%
10mph
NE
Mostly Cloudy
Humidity
55%
Feels like
35°F
Dew Point
26°F
9 PM
41°F
50%
10mph
ENE
50% Chance of Light Rain
Humidity
57%
Feels like
35°F
Dew Point
27°F
10 PM
40°F
60%
10mph
ENE
60% Chance of Light Rain
Humidity
62%
Feels like
33°F
Dew Point
28°F
11 PM
38°F
80%
11mph
ENE
80% Chance of Sleet
Humidity
68%
Feels like
31°F
Dew Point
29°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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