Hourly Weather Forecast - O'Fallon, MO

12 AM
43°F
0%
4mph
NNE
Mostly Clear
Humidity
47%
Feels like
41°F
Dew Point
24°F
1 AM
42°F
0%
4mph
NE
Clear
Humidity
49%
Feels like
39°F
Dew Point
24°F
2 AM
40°F
0%
4mph
NE
Mostly Clear
Humidity
53%
Feels like
37°F
Dew Point
24°F
3 AM
39°F
0%
5mph
NE
Partly Cloudy
Humidity
55%
Feels like
36°F
Dew Point
24°F
4 AM
38°F
0%
5mph
ENE
Partly Cloudy
Humidity
55%
Feels like
35°F
Dew Point
24°F
5 AM
38°F
0%
5mph
ENE
Partly Cloudy
Humidity
56%
Feels like
34°F
Dew Point
24°F
6 AM
37°F
0%
6mph
ENE
Partly Cloudy
Humidity
57%
Feels like
33°F
Dew Point
24°F
7 AM
38°F
0%
6mph
ENE
Partly Cloudy
Humidity
57%
Feels like
33°F
Dew Point
24°F
7:16 AM
8 AM
40°F
0%
7mph
E
Partly Cloudy
Humidity
56%
Feels like
35°F
Dew Point
25°F
9 AM
43°F
0%
8mph
E
Partly Cloudy
Humidity
52%
Feels like
38°F
Dew Point
27°F
10 AM
46°F
0%
9mph
E
Partly Cloudy
Humidity
48%
Feels like
42°F
Dew Point
28°F
11 AM
49°F
0%
9mph
E
Mostly Cloudy
Humidity
43%
Feels like
46°F
Dew Point
28°F
12 PM
52°F
0%
10mph
ESE
Mostly Cloudy
Humidity
39%
Feels like
52°F
Dew Point
28°F
1 PM
55°F
0%
10mph
ESE
Mostly Cloudy
Humidity
37%
Feels like
55°F
Dew Point
29°F
2 PM
58°F
0%
11mph
ESE
Cloudy
Humidity
36%
Feels like
58°F
Dew Point
31°F
3 PM
60°F
0%
11mph
ESE
Cloudy
Humidity
37%
Feels like
60°F
Dew Point
33°F
4 PM
61°F
0%
11mph
ESE
Cloudy
Humidity
38%
Feels like
61°F
Dew Point
35°F
5 PM
61°F
0%
11mph
ESE
Cloudy
Humidity
41%
Feels like
61°F
Dew Point
37°F
6 PM
60°F
0%
10mph
ESE
Cloudy
Humidity
45%
Feels like
60°F
Dew Point
39°F
7 PM
58°F
0%
9mph
ESE
Cloudy
Humidity
50%
Feels like
58°F
Dew Point
40°F
7:08 PM
8 PM
56°F
10%
9mph
ESE
Cloudy
Humidity
56%
Feels like
56°F
Dew Point
41°F
9 PM
56°F
10%
9mph
ESE
Cloudy
Humidity
60%
Feels like
56°F
Dew Point
42°F
10 PM
55°F
10%
9mph
SE
Cloudy
Humidity
62%
Feels like
55°F
Dew Point
42°F
11 PM
55°F
10%
9mph
SE
Cloudy
Humidity
64%
Feels like
55°F
Dew Point
42°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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