Hourly Weather Forecast - Sullivan, IL

12 AM
23°F
10%
6mph
WNW
Clear
Humidity
73%
Feels like
16°F
Dew Point
16°F
1 AM
22°F
10%
6mph
WNW
Clear
Humidity
75%
Feels like
15°F
Dew Point
16°F
2 AM
22°F
10%
6mph
WNW
Partly Cloudy
Humidity
76%
Feels like
14°F
Dew Point
16°F
3 AM
21°F
20%
6mph
WNW
Partly Cloudy
Humidity
78%
Feels like
14°F
Dew Point
16°F
4 AM
21°F
20%
6mph
WNW
Partly Cloudy
Humidity
79%
Feels like
13°F
Dew Point
15°F
5 AM
21°F
20%
7mph
WNW
Partly Cloudy
Humidity
76%
Feels like
13°F
Dew Point
15°F
6 AM
22°F
20%
7mph
WNW
Mostly Cloudy
Humidity
73%
Feels like
13°F
Dew Point
15°F
7 AM
24°F
10%
8mph
WNW
Partly Cloudy
Humidity
67%
Feels like
15°F
Dew Point
14°F
7:10 AM
8 AM
25°F
10%
8mph
WNW
Mostly Sunny
Humidity
59%
Feels like
16°F
Dew Point
13°F
9 AM
27°F
10%
9mph
WNW
Sunny
Humidity
53%
Feels like
18°F
Dew Point
12°F
10 AM
28°F
10%
9mph
WNW
Sunny
Humidity
47%
Feels like
19°F
Dew Point
11°F
11 AM
29°F
10%
10mph
WNW
Sunny
Humidity
43%
Feels like
20°F
Dew Point
9°F
12 PM
30°F
10%
10mph
W
Sunny
Humidity
40%
Feels like
21°F
Dew Point
8°F
1 PM
30°F
10%
10mph
W
Sunny
Humidity
39%
Feels like
21°F
Dew Point
8°F
2 PM
30°F
10%
9mph
W
Mostly Sunny
Humidity
38%
Feels like
21°F
Dew Point
8°F
3 PM
29°F
10%
9mph
W
Mostly Sunny
Humidity
40%
Feels like
21°F
Dew Point
8°F
4 PM
27°F
10%
7mph
WSW
Mostly Sunny
Humidity
43%
Feels like
20°F
Dew Point
8°F
5 PM
25°F
10%
6mph
SW
Partly Cloudy
Humidity
47%
Feels like
19°F
Dew Point
8°F
5:02 PM
6 PM
24°F
10%
5mph
SSW
Mostly Cloudy
Humidity
50%
Feels like
17°F
Dew Point
8°F
7 PM
23°F
10%
5mph
SSW
Cloudy
Humidity
53%
Feels like
16°F
Dew Point
8°F
8 PM
22°F
10%
6mph
S
Cloudy
Humidity
54%
Feels like
14°F
Dew Point
8°F
9 PM
22°F
10%
7mph
S
Cloudy
Humidity
55%
Feels like
13°F
Dew Point
8°F
10 PM
22°F
10%
7mph
S
Mostly Cloudy
Humidity
57%
Feels like
13°F
Dew Point
9°F
11 PM
22°F
10%
7mph
S
Partly Cloudy
Humidity
59%
Feels like
13°F
Dew Point
9°F

Snow Forecast through Sunday

Unrelenting Storm Track Brings Snow to Great Lakes & Northeast

A couple low pressure systems will produce additional snowfall across the Great Lakes, Upper Midwest, and Northeast this weekend into the upcoming week.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

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