Hourly Weather Forecast - Sullivan, IL

12 AM
50°F
0%
11mph
S
Clear
Humidity
69%
Feels like
50°F
Dew Point
40°F
1 AM
50°F
0%
11mph
S
Clear
Humidity
70%
Feels like
50°F
Dew Point
41°F
2 AM
50°F
0%
11mph
S
Clear
Humidity
70%
Feels like
50°F
Dew Point
41°F
3 AM
51°F
0%
11mph
S
Clear
Humidity
69%
Feels like
51°F
Dew Point
41°F
4 AM
51°F
0%
11mph
S
Clear
Humidity
69%
Feels like
51°F
Dew Point
41°F
5 AM
51°F
0%
12mph
S
Clear
Humidity
69%
Feels like
51°F
Dew Point
41°F
6 AM
51°F
10%
12mph
S
Clear
Humidity
69%
Feels like
51°F
Dew Point
42°F
6:48 AM
7 AM
54°F
10%
12mph
S
Sunny
Humidity
65%
Feels like
54°F
Dew Point
42°F
8 AM
57°F
10%
13mph
SSW
Mostly Sunny
Humidity
62%
Feels like
57°F
Dew Point
44°F
9 AM
62°F
10%
14mph
SSW
Partly Cloudy
Humidity
57%
Feels like
62°F
Dew Point
46°F
10 AM
67°F
10%
14mph
SSW
Partly Cloudy
Humidity
52%
Feels like
67°F
Dew Point
48°F
11 AM
71°F
10%
15mph
SW
Partly Cloudy
Humidity
48%
Feels like
71°F
Dew Point
50°F
12 PM
74°F
10%
16mph
SW
Mostly Cloudy
Humidity
45%
Feels like
74°F
Dew Point
51°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.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

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

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

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

When Does Spring Begin?

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