Hourly Weather Forecast - O'Fallon, MO

12 AM
31°F
0%
4mph
SW
Clear
Humidity
67%
Feels like
27°F
Dew Point
22°F
1 AM
31°F
0%
4mph
SW
Clear
Humidity
69%
Feels like
26°F
Dew Point
22°F
2 AM
30°F
0%
4mph
SW
Clear
Humidity
71%
Feels like
25°F
Dew Point
22°F
3 AM
29°F
0%
4mph
SW
Clear
Humidity
73%
Feels like
24°F
Dew Point
22°F
4 AM
29°F
0%
4mph
SSW
Clear
Humidity
74%
Feels like
24°F
Dew Point
22°F
5 AM
28°F
0%
4mph
SSW
Clear
Humidity
76%
Feels like
24°F
Dew Point
22°F
6 AM
28°F
0%
4mph
SSW
Clear
Humidity
77%
Feels like
24°F
Dew Point
22°F
7 AM
29°F
0%
4mph
SSW
Clear
Humidity
76%
Feels like
25°F
Dew Point
23°F
7:14 AM
8 AM
32°F
0%
5mph
SSW
Sunny
Humidity
73%
Feels like
28°F
Dew Point
24°F
9 AM
35°F
0%
5mph
SSW
Sunny
Humidity
68%
Feels like
31°F
Dew Point
26°F
10 AM
39°F
0%
6mph
SSW
Mostly Sunny
Humidity
62%
Feels like
34°F
Dew Point
27°F
11 AM
43°F
0%
7mph
SSW
Partly Cloudy
Humidity
58%
Feels like
38°F
Dew Point
29°F
12 PM
46°F
0%
8mph
SSW
Partly Cloudy
Humidity
54%
Feels like
42°F
Dew Point
31°F
1 PM
48°F
0%
8mph
SSW
Partly Cloudy
Humidity
53%
Feels like
45°F
Dew Point
32°F
2 PM
49°F
0%
8mph
SSW
Mostly Sunny
Humidity
53%
Feels like
46°F
Dew Point
33°F
3 PM
49°F
0%
8mph
SSW
Sunny
Humidity
56%
Feels like
46°F
Dew Point
34°F
4 PM
47°F
0%
7mph
SSW
Mostly Sunny
Humidity
60%
Feels like
44°F
Dew Point
35°F
4:42 PM
5 PM
45°F
0%
6mph
SSW
Mostly Clear
Humidity
65%
Feels like
42°F
Dew Point
34°F
6 PM
44°F
0%
6mph
SSW
Partly Cloudy
Humidity
70%
Feels like
40°F
Dew Point
35°F
7 PM
42°F
0%
6mph
SSW
Partly Cloudy
Humidity
73%
Feels like
39°F
Dew Point
35°F
8 PM
42°F
0%
6mph
SSW
Partly Cloudy
Humidity
74%
Feels like
38°F
Dew Point
34°F
9 PM
41°F
0%
6mph
SW
Partly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
34°F
10 PM
41°F
0%
6mph
SW
Partly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
34°F
11 PM
41°F
10%
6mph
SW
Partly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
34°F

Snowfall forecast through Sunday A.M.

Snow Spreads Across the Midwest into the Mid-Atlantic

A fast moving disturbance will bring snow to the Midwest and Mid-Atlantic this weekend.

Weekend Weather Outlook

Weekend Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

Story Image via pixabay.com

Winter Precipitation

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