Hourly Weather Forecast - O'Fallon, MO

12 AM
41°F
30%
5mph
ESE
30% Chance of Light Rain
Humidity
87%
Feels like
38°F
Dew Point
38°F
1 AM
41°F
40%
6mph
ESE
40% Chance of Light Rain
Humidity
88%
Feels like
37°F
Dew Point
38°F
2 AM
41°F
50%
6mph
ESE
50% Chance of Light Rain
Humidity
90%
Feels like
37°F
Dew Point
38°F
3 AM
41°F
60%
6mph
ESE
60% Chance of Light Rain
Humidity
90%
Feels like
37°F
Dew Point
38°F
4 AM
41°F
50%
6mph
ESE
50% Chance of Light Rain
Humidity
90%
Feels like
37°F
Dew Point
39°F
5 AM
42°F
50%
6mph
ESE
50% Chance of Light Rain
Humidity
92%
Feels like
38°F
Dew Point
39°F
6 AM
43°F
60%
6mph
ESE
60% Chance of Light Rain
Humidity
91%
Feels like
39°F
Dew Point
41°F
6:32 AM
7 AM
45°F
70%
6mph
ESE
70% Chance of Light Rain
Humidity
93%
Feels like
42°F
Dew Point
43°F
8 AM
49°F
80%
6mph
SE
80% Chance of Light Rain
Humidity
91%
Feels like
46°F
Dew Point
46°F
9 AM
52°F
80%
5mph
SE
80% Chance of Light Rain
Humidity
87%
Feels like
52°F
Dew Point
48°F
10 AM
55°F
80%
6mph
SE
80% Chance of Light Rain
Humidity
84%
Feels like
55°F
Dew Point
50°F
11 AM
58°F
80%
6mph
SSE
80% Chance of Light Rain
Humidity
81%
Feels like
58°F
Dew Point
52°F
12 PM
61°F
70%
6mph
SSE
70% Chance of Light Rain
Humidity
77%
Feels like
61°F
Dew Point
54°F
1 PM
64°F
50%
7mph
S
50% Chance of Light Rain
Humidity
74%
Feels like
64°F
Dew Point
55°F
2 PM
66°F
40%
7mph
S
40% Chance of Light Rain
Humidity
72%
Feels like
66°F
Dew Point
56°F
3 PM
67°F
40%
6mph
S
40% Chance of Light Rain
Humidity
70%
Feels like
67°F
Dew Point
57°F
4 PM
66°F
30%
5mph
S
30% Chance of Light Rain
Humidity
70%
Feels like
66°F
Dew Point
56°F
5 PM
65°F
30%
3mph
SSE
30% Chance of Light Rain
Humidity
73%
Feels like
65°F
Dew Point
56°F
5:57 PM
6 PM
62°F
50%
3mph
SE
50% Chance of Light Rain
Humidity
77%
Feels like
62°F
Dew Point
55°F
7 PM
59°F
60%
4mph
ESE
60% Chance of Light Rain
Humidity
81%
Feels like
59°F
Dew Point
54°F
8 PM
58°F
70%
4mph
ESE
70% Chance of Light Rain
Humidity
84%
Feels like
58°F
Dew Point
53°F
9 PM
56°F
70%
4mph
ESE
70% Chance of Light Rain
Humidity
84%
Feels like
56°F
Dew Point
52°F
10 PM
56°F
50%
4mph
SE
50% Chance of Light Rain
Humidity
84%
Feels like
56°F
Dew Point
51°F
11 PM
55°F
40%
3mph
SE
40% Chance of Light Rain
Humidity
84%
Feels like
55°F
Dew Point
51°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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