Hourly Weather Forecast - O'Fallon, MO

12 AM
70°F
0%
8mph
SSW
Clear
Humidity
55%
Feels like
70°F
Dew Point
53°F
1 AM
68°F
0%
9mph
SSW
Clear
Humidity
57%
Feels like
68°F
Dew Point
52°F
2 AM
67°F
0%
9mph
SSW
Clear
Humidity
59%
Feels like
67°F
Dew Point
52°F
3 AM
65°F
0%
9mph
SSW
Clear
Humidity
62%
Feels like
65°F
Dew Point
52°F
4 AM
64°F
0%
9mph
SSW
Clear
Humidity
66%
Feels like
64°F
Dew Point
52°F
5 AM
63°F
0%
9mph
SSW
Clear
Humidity
69%
Feels like
63°F
Dew Point
52°F
6 AM
62°F
0%
9mph
SSW
Clear
Humidity
71%
Feels like
62°F
Dew Point
53°F
7 AM
63°F
0%
9mph
SSW
Clear
Humidity
70%
Feels like
63°F
Dew Point
53°F
7:03 AM
8 AM
66°F
0%
10mph
SSW
Sunny
Humidity
65%
Feels like
66°F
Dew Point
55°F
9 AM
71°F
0%
10mph
SSW
Sunny
Humidity
58%
Feels like
71°F
Dew Point
56°F
10 AM
76°F
0%
10mph
SSW
Sunny
Humidity
52%
Feels like
76°F
Dew Point
57°F
11 AM
80°F
0%
11mph
SW
Sunny
Humidity
47%
Feels like
80°F
Dew Point
58°F
12 PM
83°F
0%
11mph
SW
Sunny
Humidity
43%
Feels like
83°F
Dew Point
58°F
1 PM
86°F
0%
10mph
WSW
Sunny
Humidity
39%
Feels like
85°F
Dew Point
58°F
2 PM
88°F
0%
10mph
W
Mostly Sunny
Humidity
36%
Feels like
87°F
Dew Point
58°F
3 PM
87°F
0%
11mph
WNW
Partly Cloudy
Humidity
34%
Feels like
85°F
Dew Point
55°F
4 PM
84°F
0%
13mph
NW
Partly Cloudy
Humidity
34%
Feels like
83°F
Dew Point
53°F
5 PM
79°F
0%
15mph
NNW
Partly Cloudy
Humidity
37%
Feels like
79°F
Dew Point
51°F
6 PM
75°F
0%
18mph
NNW
Mostly Sunny
Humidity
40%
Feels like
75°F
Dew Point
49°F
7 PM
70°F
10%
18mph
N
Sunny
Humidity
46%
Feels like
70°F
Dew Point
48°F
7:16 PM
8 PM
66°F
20%
18mph
N
Clear
Humidity
49%
Feels like
66°F
Dew Point
46°F
9 PM
62°F
20%
17mph
N
Mostly Clear
Humidity
54%
Feels like
62°F
Dew Point
45°F
10 PM
58°F
20%
16mph
N
Partly Cloudy
Humidity
57%
Feels like
58°F
Dew Point
43°F
11 PM
55°F
20%
15mph
N
Mostly Clear
Humidity
59%
Feels like
55°F
Dew Point
41°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

Today's Weather Outlook

Today's Weather Outlook

Weekend Weather Preview

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Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

(Image provided by Pixabay.com)

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