Hourly Weather Forecast - O'Fallon, MO

12 AM
47°F
10%
19mph
SSW
Clear
Humidity
44%
Feels like
40°F
Dew Point
26°F
1 AM
46°F
10%
20mph
SSW
Mostly Clear
Humidity
46%
Feels like
39°F
Dew Point
27°F
2 AM
46°F
10%
19mph
SSW
Mostly Clear
Humidity
48%
Feels like
39°F
Dew Point
28°F
3 AM
46°F
10%
18mph
SW
Mostly Clear
Humidity
49%
Feels like
39°F
Dew Point
28°F
4 AM
46°F
10%
17mph
SW
Partly Cloudy
Humidity
50%
Feels like
39°F
Dew Point
28°F
5 AM
46°F
10%
16mph
SW
Mostly Clear
Humidity
51%
Feels like
39°F
Dew Point
29°F
6 AM
46°F
10%
15mph
WSW
Mostly Clear
Humidity
54%
Feels like
40°F
Dew Point
30°F
7 AM
47°F
10%
14mph
WSW
Mostly Clear
Humidity
55%
Feels like
41°F
Dew Point
31°F
7:17 AM
8 AM
49°F
10%
13mph
WSW
Partly Cloudy
Humidity
56%
Feels like
43°F
Dew Point
34°F
9 AM
51°F
0%
13mph
W
Partly Cloudy
Humidity
56%
Feels like
51°F
Dew Point
36°F
10 AM
54°F
0%
13mph
W
Partly Cloudy
Humidity
53%
Feels like
54°F
Dew Point
38°F
11 AM
56°F
0%
13mph
WNW
Partly Cloudy
Humidity
46%
Feels like
56°F
Dew Point
36°F
12 PM
58°F
0%
12mph
WNW
Partly Cloudy
Humidity
42%
Feels like
58°F
Dew Point
35°F
1 PM
60°F
0%
11mph
WNW
Partly Cloudy
Humidity
39%
Feels like
60°F
Dew Point
35°F
2 PM
61°F
0%
11mph
WNW
Partly Cloudy
Humidity
35%
Feels like
61°F
Dew Point
33°F
3 PM
61°F
0%
10mph
WNW
Partly Cloudy
Humidity
31%
Feels like
61°F
Dew Point
30°F
4 PM
60°F
0%
9mph
WNW
Partly Cloudy
Humidity
30%
Feels like
60°F
Dew Point
29°F
5 PM
58°F
0%
8mph
NW
Mostly Sunny
Humidity
30%
Feels like
58°F
Dew Point
28°F
6 PM
56°F
0%
6mph
NW
Mostly Sunny
Humidity
33%
Feels like
56°F
Dew Point
27°F
7 PM
54°F
0%
5mph
NW
Partly Cloudy
Humidity
35%
Feels like
54°F
Dew Point
26°F
7:07 PM
8 PM
51°F
0%
4mph
NNW
Partly Cloudy
Humidity
37%
Feels like
51°F
Dew Point
26°F
9 PM
49°F
0%
4mph
N
Partly Cloudy
Humidity
39%
Feels like
48°F
Dew Point
25°F
10 PM
47°F
0%
4mph
N
Partly Cloudy
Humidity
41%
Feels like
46°F
Dew Point
25°F
11 PM
46°F
0%
4mph
NNE
Partly Cloudy
Humidity
42%
Feels like
44°F
Dew Point
24°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

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Today's National Outlook

Hurricane Tracker

Allergy Forecast

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