Hourly Weather Forecast - O'Fallon, IL

12 AM
46°F
20%
4mph
ENE
Clear
Humidity
74%
Feels like
44°F
Dew Point
38°F
1 AM
45°F
20%
4mph
NE
Clear
Humidity
76%
Feels like
44°F
Dew Point
38°F
2 AM
44°F
20%
4mph
NE
Mostly Clear
Humidity
79%
Feels like
42°F
Dew Point
38°F
3 AM
43°F
20%
5mph
NE
Partly Cloudy
Humidity
82%
Feels like
40°F
Dew Point
38°F
4 AM
42°F
20%
5mph
NE
Cloudy
Humidity
84%
Feels like
38°F
Dew Point
37°F
5 AM
40°F
10%
6mph
ENE
Cloudy
Humidity
87%
Feels like
37°F
Dew Point
37°F
6 AM
40°F
10%
6mph
ENE
Cloudy
Humidity
87%
Feels like
36°F
Dew Point
37°F
6:55 AM
7 AM
42°F
10%
6mph
E
Cloudy
Humidity
82%
Feels like
38°F
Dew Point
37°F
8 AM
46°F
10%
6mph
E
Mostly Cloudy
Humidity
72%
Feels like
42°F
Dew Point
37°F
9 AM
50°F
10%
7mph
E
Mostly Cloudy
Humidity
61%
Feels like
50°F
Dew Point
37°F
10 AM
54°F
10%
7mph
E
Mostly Cloudy
Humidity
54%
Feels like
54°F
Dew Point
37°F
11 AM
57°F
10%
8mph
ESE
Partly Cloudy
Humidity
48%
Feels like
57°F
Dew Point
37°F
12 PM
59°F
10%
8mph
ESE
Partly Cloudy
Humidity
44%
Feels like
59°F
Dew Point
37°F
1 PM
61°F
10%
9mph
SE
Partly Cloudy
Humidity
41%
Feels like
61°F
Dew Point
37°F
2 PM
62°F
0%
9mph
SE
Partly Cloudy
Humidity
39%
Feels like
62°F
Dew Point
37°F
3 PM
63°F
0%
9mph
SE
Partly Cloudy
Humidity
38%
Feels like
63°F
Dew Point
38°F
4 PM
64°F
0%
9mph
SE
Mostly Sunny
Humidity
39%
Feels like
64°F
Dew Point
38°F
5 PM
62°F
0%
9mph
SE
Mostly Sunny
Humidity
41%
Feels like
62°F
Dew Point
39°F
6 PM
60°F
0%
9mph
SE
Mostly Sunny
Humidity
47%
Feels like
60°F
Dew Point
40°F
7 PM
59°F
0%
8mph
SE
Mostly Sunny
Humidity
52%
Feels like
59°F
Dew Point
41°F
7:16 PM
8 PM
58°F
0%
9mph
SE
Mostly Clear
Humidity
56%
Feels like
58°F
Dew Point
42°F
9 PM
58°F
0%
9mph
SE
Clear
Humidity
59%
Feels like
58°F
Dew Point
43°F
10 PM
56°F
0%
9mph
SE
Clear
Humidity
63%
Feels like
56°F
Dew Point
44°F
11 PM
55°F
0%
9mph
SSE
Clear
Humidity
67%
Feels like
55°F
Dew Point
44°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.

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(Image provided by Pixabay.com)

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