Hourly Weather Forecast - Sullivan, IL

12 AM
30°F
0%
7mph
NW
Clear
Humidity
75%
Feels like
23°F
Dew Point
23°F
1 AM
29°F
0%
7mph
NW
Clear
Humidity
75%
Feels like
22°F
Dew Point
22°F
2 AM
28°F
0%
7mph
NNW
Clear
Humidity
75%
Feels like
21°F
Dew Point
21°F
3 AM
28°F
0%
6mph
NNW
Clear
Humidity
76%
Feels like
21°F
Dew Point
21°F
4 AM
27°F
0%
6mph
NNW
Clear
Humidity
76%
Feels like
20°F
Dew Point
20°F
5 AM
26°F
0%
6mph
NNW
Mostly Clear
Humidity
77%
Feels like
19°F
Dew Point
20°F
6 AM
26°F
0%
5mph
NNW
Mostly Clear
Humidity
76%
Feels like
20°F
Dew Point
19°F
7 AM
26°F
0%
5mph
NNW
Mostly Clear
Humidity
75%
Feels like
20°F
Dew Point
19°F
7:11 AM
8 AM
27°F
0%
5mph
N
Partly Cloudy
Humidity
70%
Feels like
21°F
Dew Point
19°F
9 AM
29°F
0%
5mph
N
Partly Cloudy
Humidity
66%
Feels like
23°F
Dew Point
19°F
10 AM
31°F
0%
4mph
N
Partly Cloudy
Humidity
60%
Feels like
26°F
Dew Point
19°F
11 AM
33°F
0%
4mph
NNE
Mostly Sunny
Humidity
55%
Feels like
30°F
Dew Point
19°F
12 PM
35°F
0%
3mph
NNE
Sunny
Humidity
51%
Feels like
32°F
Dew Point
18°F
1 PM
36°F
0%
3mph
NE
Sunny
Humidity
50%
Feels like
33°F
Dew Point
19°F
2 PM
36°F
0%
3mph
NE
Sunny
Humidity
50%
Feels like
34°F
Dew Point
19°F
3 PM
36°F
0%
3mph
NE
Sunny
Humidity
52%
Feels like
33°F
Dew Point
20°F
4 PM
34°F
0%
3mph
ENE
Mostly Sunny
Humidity
58%
Feels like
31°F
Dew Point
21°F
4:33 PM
5 PM
31°F
0%
3mph
E
Partly Cloudy
Humidity
65%
Feels like
31°F
Dew Point
21°F
6 PM
29°F
0%
3mph
ESE
Partly Cloudy
Humidity
70%
Feels like
26°F
Dew Point
21°F
7 PM
28°F
0%
4mph
ESE
Partly Cloudy
Humidity
72%
Feels like
24°F
Dew Point
20°F
8 PM
28°F
0%
4mph
ESE
Partly Cloudy
Humidity
73%
Feels like
23°F
Dew Point
20°F
9 PM
27°F
0%
5mph
SE
Partly Cloudy
Humidity
73%
Feels like
22°F
Dew Point
20°F
10 PM
27°F
0%
5mph
SE
Partly Cloudy
Humidity
72%
Feels like
21°F
Dew Point
19°F
11 PM
28°F
0%
6mph
SE
Mostly Clear
Humidity
72%
Feels like
21°F
Dew Point
20°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Weekend Weather Outlook

Weekend Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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