Hourly Weather Forecast - O'Fallon, MO

12 AM
37°F
0%
10mph
NW
Clear
Humidity
67%
Feels like
30°F
Dew Point
27°F
1 AM
35°F
0%
9mph
NW
Clear
Humidity
69%
Feels like
28°F
Dew Point
26°F
2 AM
34°F
0%
8mph
NW
Clear
Humidity
72%
Feels like
28°F
Dew Point
26°F
3 AM
33°F
0%
7mph
NW
Clear
Humidity
74%
Feels like
27°F
Dew Point
26°F
4 AM
33°F
0%
5mph
NW
Clear
Humidity
75%
Feels like
28°F
Dew Point
26°F
5 AM
32°F
0%
4mph
WNW
Clear
Humidity
77%
Feels like
28°F
Dew Point
26°F
6 AM
32°F
0%
4mph
WNW
Clear
Humidity
77%
Feels like
29°F
Dew Point
26°F
7 AM
34°F
0%
4mph
W
Clear
Humidity
75%
Feels like
30°F
Dew Point
27°F
7:19 AM
8 AM
37°F
0%
4mph
W
Sunny
Humidity
71%
Feels like
34°F
Dew Point
28°F
9 AM
41°F
0%
4mph
W
Sunny
Humidity
67%
Feels like
38°F
Dew Point
31°F
10 AM
45°F
0%
5mph
WSW
Sunny
Humidity
60%
Feels like
42°F
Dew Point
31°F
11 AM
47°F
0%
6mph
WSW
Sunny
Humidity
52%
Feels like
45°F
Dew Point
31°F
12 PM
50°F
0%
7mph
WSW
Sunny
Humidity
47%
Feels like
47°F
Dew Point
31°F
1 PM
52°F
0%
8mph
WSW
Mostly Sunny
Humidity
43%
Feels like
52°F
Dew Point
30°F
2 PM
53°F
0%
8mph
SW
Sunny
Humidity
41%
Feels like
53°F
Dew Point
30°F
3 PM
54°F
0%
9mph
SW
Sunny
Humidity
39%
Feels like
54°F
Dew Point
29°F
4 PM
54°F
0%
10mph
SW
Sunny
Humidity
39%
Feels like
54°F
Dew Point
29°F
5 PM
53°F
0%
10mph
SSW
Sunny
Humidity
39%
Feels like
53°F
Dew Point
29°F
6 PM
52°F
0%
10mph
SSW
Sunny
Humidity
39%
Feels like
52°F
Dew Point
28°F
7 PM
51°F
0%
11mph
S
Sunny
Humidity
39%
Feels like
51°F
Dew Point
27°F
7:06 PM
8 PM
49°F
0%
12mph
S
Clear
Humidity
39%
Feels like
45°F
Dew Point
26°F
9 PM
48°F
0%
13mph
SSW
Clear
Humidity
40%
Feels like
43°F
Dew Point
25°F
10 PM
48°F
0%
15mph
SSW
Clear
Humidity
41%
Feels like
42°F
Dew Point
25°F
11 PM
47°F
0%
16mph
SSW
Clear
Humidity
42%
Feels like
41°F
Dew Point
25°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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