Hourly Weather Forecast - O'Fallon, MO

12 AM
63°F
0%
3mph
N
Mostly Clear
Humidity
62%
Feels like
63°F
Dew Point
49°F
1 AM
60°F
0%
3mph
NNE
Clear
Humidity
66%
Feels like
60°F
Dew Point
49°F
2 AM
58°F
0%
2mph
NNE
Clear
Humidity
72%
Feels like
58°F
Dew Point
49°F
3 AM
56°F
10%
1mph
NE
Partly Cloudy
Humidity
77%
Feels like
56°F
Dew Point
49°F
4 AM
54°F
10%
1mph
ENE
Partly Cloudy
Humidity
81%
Feels like
54°F
Dew Point
49°F
5 AM
53°F
0%
1mph
E
Partly Cloudy
Humidity
84%
Feels like
53°F
Dew Point
48°F
6 AM
52°F
0%
1mph
ENE
Partly Cloudy
Humidity
87%
Feels like
52°F
Dew Point
48°F
7 AM
53°F
0%
2mph
E
Partly Cloudy
Humidity
85%
Feels like
53°F
Dew Point
49°F
7:05 AM
8 AM
56°F
0%
2mph
ESE
Partly Cloudy
Humidity
78%
Feels like
56°F
Dew Point
50°F
9 AM
62°F
0%
2mph
SE
Mostly Cloudy
Humidity
67%
Feels like
62°F
Dew Point
51°F
10 AM
67°F
0%
3mph
SE
Partly Cloudy
Humidity
58%
Feels like
67°F
Dew Point
52°F
11 AM
72°F
0%
3mph
SSE
Partly Cloudy
Humidity
50%
Feels like
72°F
Dew Point
52°F
12 PM
76°F
0%
3mph
S
Partly Cloudy
Humidity
44%
Feels like
76°F
Dew Point
52°F
1 PM
80°F
0%
4mph
S
Mostly Sunny
Humidity
39%
Feels like
80°F
Dew Point
53°F
2 PM
83°F
0%
4mph
SSW
Mostly Sunny
Humidity
35%
Feels like
82°F
Dew Point
53°F
3 PM
84°F
0%
4mph
SW
Sunny
Humidity
33%
Feels like
83°F
Dew Point
52°F
4 PM
84°F
0%
4mph
WSW
Sunny
Humidity
32%
Feels like
82°F
Dew Point
52°F
5 PM
83°F
0%
4mph
SW
Sunny
Humidity
34%
Feels like
82°F
Dew Point
52°F
6 PM
81°F
0%
3mph
SSW
Sunny
Humidity
37%
Feels like
80°F
Dew Point
52°F
7 PM
78°F
0%
3mph
S
Sunny
Humidity
43%
Feels like
78°F
Dew Point
53°F
7:15 PM
8 PM
75°F
0%
4mph
S
Clear
Humidity
48%
Feels like
75°F
Dew Point
54°F
9 PM
73°F
0%
5mph
S
Clear
Humidity
52%
Feels like
73°F
Dew Point
54°F
10 PM
72°F
0%
6mph
S
Clear
Humidity
54%
Feels like
72°F
Dew Point
54°F
11 PM
71°F
0%
7mph
S
Clear
Humidity
55%
Feels like
71°F
Dew Point
54°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.

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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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