Hourly Weather Forecast - Sullivan, IL

12 AM
34°F
80%
9mph
E
80% Chance of Flurries
Humidity
69%
Feels like
26°F
Dew Point
25°F
1 AM
33°F
80%
9mph
E
80% Chance of Snow
Humidity
77%
Feels like
25°F
Dew Point
26°F
2 AM
32°F
70%
10mph
E
70% Chance of Heavy Snow
Humidity
84%
Feels like
23°F
Dew Point
27°F
3 AM
31°F
50%
10mph
E
50% Chance of Heavy Snow
Humidity
88%
Feels like
23°F
Dew Point
28°F
4 AM
31°F
30%
10mph
E
30% Chance of Snow
Humidity
88%
Feels like
23°F
Dew Point
28°F
5 AM
32°F
30%
11mph
E
30% Chance of Snow
Humidity
84%
Feels like
24°F
Dew Point
28°F
6 AM
34°F
10%
11mph
E
Cloudy
Humidity
79%
Feels like
26°F
Dew Point
28°F
6:26 AM
7 AM
35°F
10%
11mph
E
Mostly Cloudy
Humidity
76%
Feels like
27°F
Dew Point
29°F
8 AM
37°F
10%
10mph
E
Mostly Cloudy
Humidity
74%
Feels like
30°F
Dew Point
29°F
9 AM
38°F
10%
11mph
E
Mostly Cloudy
Humidity
73%
Feels like
31°F
Dew Point
30°F
10 AM
40°F
0%
11mph
E
Mostly Cloudy
Humidity
71%
Feels like
33°F
Dew Point
31°F
11 AM
41°F
0%
11mph
E
Mostly Cloudy
Humidity
69%
Feels like
35°F
Dew Point
32°F
12 PM
42°F
0%
10mph
E
Cloudy
Humidity
68%
Feels like
37°F
Dew Point
33°F
1 PM
43°F
0%
10mph
E
Mostly Cloudy
Humidity
67%
Feels like
37°F
Dew Point
33°F
2 PM
43°F
0%
10mph
E
Cloudy
Humidity
68%
Feels like
38°F
Dew Point
33°F
3 PM
43°F
0%
9mph
E
Cloudy
Humidity
71%
Feels like
37°F
Dew Point
34°F
4 PM
42°F
0%
8mph
E
Cloudy
Humidity
74%
Feels like
37°F
Dew Point
34°F
5 PM
41°F
0%
7mph
E
Mostly Cloudy
Humidity
79%
Feels like
36°F
Dew Point
35°F
5:47 PM
6 PM
40°F
0%
6mph
E
Mostly Cloudy
Humidity
83%
Feels like
35°F
Dew Point
35°F
7 PM
39°F
0%
6mph
E
Mostly Cloudy
Humidity
86%
Feels like
34°F
Dew Point
35°F
8 PM
38°F
0%
6mph
ESE
Mostly Cloudy
Humidity
88%
Feels like
34°F
Dew Point
35°F
9 PM
37°F
0%
5mph
ESE
Cloudy
Humidity
91%
Feels like
33°F
Dew Point
35°F
10 PM
37°F
0%
5mph
ESE
Cloudy
Humidity
93%
Feels like
33°F
Dew Point
35°F
11 PM
37°F
0%
5mph
ESE
Cloudy
Humidity
96%
Feels like
33°F
Dew Point
36°F

Snow and Ice Accumulations through Tuesday AM

Wintry Disturbance Bisects U.S. Mid-Latitudes

A wintry disturbance will bring icing and light snow from the central Plains today through the Northeast on Tuesday.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

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