Hourly Weather Forecast - Sullivan, IL

12 AM
38°F
0%
4mph
ENE
Cloudy
Humidity
97%
Feels like
35°F
Dew Point
37°F
1 AM
38°F
0%
5mph
E
Cloudy
Humidity
97%
Feels like
34°F
Dew Point
37°F
2 AM
37°F
0%
6mph
E
Cloudy
Humidity
98%
Feels like
33°F
Dew Point
37°F
3 AM
37°F
10%
6mph
E
Cloudy
Humidity
98%
Feels like
32°F
Dew Point
37°F
4 AM
37°F
10%
7mph
E
Foggy
Humidity
100%
Feels like
32°F
Dew Point
37°F
5 AM
37°F
20%
7mph
E
Foggy
Humidity
100%
Feels like
32°F
Dew Point
37°F
6 AM
38°F
10%
8mph
ESE
Foggy
Humidity
100%
Feels like
32°F
Dew Point
38°F
7 AM
39°F
10%
8mph
ESE
Foggy
Humidity
99%
Feels like
34°F
Dew Point
39°F
7:12 AM
8 AM
41°F
10%
9mph
SE
Cloudy
Humidity
97%
Feels like
35°F
Dew Point
40°F
9 AM
43°F
10%
9mph
SE
Cloudy
Humidity
94%
Feels like
38°F
Dew Point
42°F
10 AM
46°F
10%
9mph
SE
Cloudy
Humidity
91%
Feels like
41°F
Dew Point
43°F
11 AM
49°F
10%
10mph
SSE
Cloudy
Humidity
88%
Feels like
45°F
Dew Point
45°F
12 PM
51°F
10%
10mph
SSE
Cloudy
Humidity
86%
Feels like
51°F
Dew Point
47°F
1 PM
53°F
20%
10mph
SSE
Cloudy
Humidity
87%
Feels like
53°F
Dew Point
49°F
2 PM
55°F
20%
10mph
SSE
Cloudy
Humidity
88%
Feels like
55°F
Dew Point
51°F
3 PM
56°F
20%
10mph
SSE
Cloudy
Humidity
91%
Feels like
56°F
Dew Point
53°F
4 PM
56°F
20%
10mph
SSE
Mostly Cloudy
Humidity
94%
Feels like
56°F
Dew Point
54°F
4:35 PM
5 PM
55°F
20%
10mph
SSE
Foggy
Humidity
100%
Feels like
55°F
Dew Point
55°F
6 PM
55°F
10%
9mph
S
Foggy
Humidity
100%
Feels like
55°F
Dew Point
55°F
7 PM
55°F
10%
9mph
S
Foggy
Humidity
100%
Feels like
55°F
Dew Point
55°F
8 PM
56°F
10%
10mph
S
Foggy
Humidity
100%
Feels like
56°F
Dew Point
56°F
9 PM
57°F
10%
11mph
SSW
Foggy
Humidity
100%
Feels like
57°F
Dew Point
57°F
10 PM
58°F
20%
11mph
SSW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
58°F
11 PM
58°F
20%
11mph
SSW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
58°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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