Hourly Weather Forecast - O'Fallon, IL

12 AM
56°F
40%
6mph
S
40% Chance of Light Rain
Humidity
88%
Feels like
56°F
Dew Point
52°F
1 AM
55°F
60%
6mph
S
60% Chance of Light Rain
Humidity
89%
Feels like
55°F
Dew Point
52°F
2 AM
54°F
70%
6mph
S
70% Chance Rain Showers
Humidity
90%
Feels like
54°F
Dew Point
51°F
3 AM
54°F
70%
6mph
SSE
70% Chance Rain Showers
Humidity
90%
Feels like
54°F
Dew Point
51°F
4 AM
53°F
60%
6mph
S
60% Chance Rain Showers
Humidity
91%
Feels like
53°F
Dew Point
51°F
5 AM
52°F
60%
6mph
S
60% Chance Rain Showers
Humidity
96%
Feels like
52°F
Dew Point
51°F
6 AM
53°F
70%
6mph
S
70% Chance Rain Showers
Humidity
96%
Feels like
53°F
Dew Point
52°F
6:27 AM
7 AM
56°F
90%
6mph
S
Thunderstorms
Humidity
92%
Feels like
56°F
Dew Point
53°F
8 AM
60°F
90%
6mph
S
Thunderstorms
Humidity
83%
Feels like
60°F
Dew Point
55°F
9 AM
63°F
100%
6mph
SSW
Thunderstorms
Humidity
77%
Feels like
63°F
Dew Point
56°F
10 AM
65°F
90%
6mph
SSW
Thunderstorms
Humidity
74%
Feels like
65°F
Dew Point
56°F
11 AM
66°F
90%
6mph
SSW
Thunderstorms
Humidity
71%
Feels like
66°F
Dew Point
57°F
12 PM
67°F
90%
6mph
SSW
Thunderstorms
Humidity
69%
Feels like
67°F
Dew Point
57°F
1 PM
69°F
90%
6mph
SSW
Thunderstorms
Humidity
67%
Feels like
69°F
Dew Point
57°F
2 PM
69°F
90%
6mph
SSW
Thunderstorms
Humidity
67%
Feels like
69°F
Dew Point
57°F
3 PM
68°F
90%
6mph
SW
Thunderstorms
Humidity
68%
Feels like
68°F
Dew Point
57°F
4 PM
66°F
90%
6mph
SSW
Thunderstorms
Humidity
73%
Feels like
66°F
Dew Point
57°F
5 PM
64°F
90%
6mph
SSW
Thunderstorms
Humidity
79%
Feels like
64°F
Dew Point
57°F
5:55 PM
6 PM
62°F
50%
6mph
SSW
50% Chance of Light Rain
Humidity
84%
Feels like
62°F
Dew Point
57°F
7 PM
61°F
40%
6mph
SSW
40% Chance of Light Rain
Humidity
87%
Feels like
61°F
Dew Point
57°F
8 PM
60°F
40%
5mph
SSW
40% Chance Rain Showers
Humidity
89%
Feels like
60°F
Dew Point
57°F
9 PM
60°F
40%
5mph
SSW
40% Chance Rain Showers
Humidity
89%
Feels like
60°F
Dew Point
56°F
10 PM
59°F
40%
5mph
SSW
40% Chance Rain Showers
Humidity
90%
Feels like
59°F
Dew Point
56°F
11 PM
59°F
40%
5mph
SSW
40% Chance of Light Rain
Humidity
90%
Feels like
59°F
Dew Point
56°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

Monday'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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