Hourly Weather Forecast - Sullivan, IL

12 AM
58°F
20%
11mph
SSW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
58°F
1 AM
58°F
20%
12mph
SSW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
58°F
2 AM
59°F
20%
12mph
SW
Foggy
Humidity
100%
Feels like
59°F
Dew Point
59°F
3 AM
59°F
10%
12mph
SW
Foggy
Humidity
100%
Feels like
59°F
Dew Point
59°F
4 AM
58°F
10%
11mph
SW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
58°F
5 AM
58°F
10%
11mph
SSW
Foggy
Humidity
100%
Feels like
58°F
Dew Point
57°F
6 AM
57°F
10%
12mph
SSW
Foggy
Humidity
100%
Feels like
57°F
Dew Point
57°F
7 AM
58°F
10%
12mph
SSW
Mostly Cloudy
Humidity
98%
Feels like
58°F
Dew Point
57°F
7:13 AM
8 AM
58°F
10%
13mph
SSW
Mostly Cloudy
Humidity
95%
Feels like
58°F
Dew Point
57°F
9 AM
60°F
10%
13mph
SW
Mostly Cloudy
Humidity
91%
Feels like
60°F
Dew Point
57°F
10 AM
61°F
10%
14mph
SW
Mostly Cloudy
Humidity
87%
Feels like
61°F
Dew Point
57°F
11 AM
63°F
10%
15mph
SW
Mostly Cloudy
Humidity
83%
Feels like
63°F
Dew Point
58°F
12 PM
64°F
10%
15mph
SW
Mostly Cloudy
Humidity
80%
Feels like
64°F
Dew Point
58°F
1 PM
65°F
10%
15mph
SW
Mostly Cloudy
Humidity
79%
Feels like
65°F
Dew Point
58°F
2 PM
65°F
10%
14mph
SW
Mostly Cloudy
Humidity
77%
Feels like
65°F
Dew Point
58°F
3 PM
65°F
10%
13mph
SSW
Mostly Cloudy
Humidity
77%
Feels like
65°F
Dew Point
58°F
4 PM
64°F
10%
12mph
SSW
Mostly Cloudy
Humidity
80%
Feels like
64°F
Dew Point
57°F
4:35 PM
5 PM
62°F
10%
10mph
SSW
Partly Cloudy
Humidity
85%
Feels like
62°F
Dew Point
57°F
6 PM
60°F
10%
9mph
SSW
Partly Cloudy
Humidity
88%
Feels like
60°F
Dew Point
56°F
7 PM
58°F
10%
9mph
SSW
Partly Cloudy
Humidity
90%
Feels like
58°F
Dew Point
56°F
8 PM
58°F
10%
9mph
SSW
Hazy
Humidity
91%
Feels like
58°F
Dew Point
55°F
9 PM
57°F
10%
9mph
SW
Partly Cloudy
Humidity
90%
Feels like
57°F
Dew Point
54°F
10 PM
56°F
10%
9mph
SW
Partly Cloudy
Humidity
89%
Feels like
56°F
Dew Point
53°F
11 PM
56°F
10%
9mph
SW
Cloudy
Humidity
88%
Feels like
56°F
Dew Point
53°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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