Hourly Weather Forecast - Sullivan, IL

12 AM
44°F
10%
9mph
SSW
Cloudy
Humidity
95%
Feels like
38°F
Dew Point
42°F
1 AM
44°F
10%
9mph
SW
Cloudy
Humidity
96%
Feels like
38°F
Dew Point
42°F
2 AM
44°F
0%
9mph
SW
Cloudy
Humidity
97%
Feels like
38°F
Dew Point
43°F
3 AM
43°F
0%
9mph
SW
Cloudy
Humidity
98%
Feels like
38°F
Dew Point
43°F
4 AM
43°F
0%
8mph
SW
Foggy
Humidity
99%
Feels like
39°F
Dew Point
43°F
5 AM
44°F
0%
8mph
SW
Foggy
Humidity
99%
Feels like
39°F
Dew Point
43°F
6 AM
44°F
0%
7mph
SW
Cloudy
Humidity
98%
Feels like
40°F
Dew Point
44°F
7 AM
45°F
0%
7mph
SW
Cloudy
Humidity
97%
Feels like
41°F
Dew Point
44°F
7:12 AM
8 AM
47°F
0%
7mph
WSW
Cloudy
Humidity
94%
Feels like
43°F
Dew Point
45°F
9 AM
48°F
0%
7mph
WSW
Cloudy
Humidity
92%
Feels like
45°F
Dew Point
46°F
10 AM
51°F
0%
7mph
W
Cloudy
Humidity
88%
Feels like
51°F
Dew Point
47°F
11 AM
53°F
0%
7mph
W
Cloudy
Humidity
85%
Feels like
53°F
Dew Point
48°F
12 PM
54°F
0%
7mph
WNW
Cloudy
Humidity
82%
Feels like
54°F
Dew Point
49°F
1 PM
55°F
0%
7mph
WNW
Cloudy
Humidity
81%
Feels like
55°F
Dew Point
49°F
2 PM
54°F
0%
6mph
NW
Cloudy
Humidity
80%
Feels like
54°F
Dew Point
48°F
3 PM
53°F
0%
6mph
NW
Cloudy
Humidity
82%
Feels like
53°F
Dew Point
48°F
4 PM
51°F
0%
5mph
NNW
Cloudy
Humidity
86%
Feels like
51°F
Dew Point
47°F
4:34 PM
5 PM
48°F
0%
4mph
N
Cloudy
Humidity
92%
Feels like
46°F
Dew Point
46°F
6 PM
46°F
0%
4mph
N
Cloudy
Humidity
94%
Feels like
44°F
Dew Point
44°F
7 PM
44°F
0%
4mph
NNE
Cloudy
Humidity
96%
Feels like
42°F
Dew Point
43°F
8 PM
43°F
0%
4mph
NE
Cloudy
Humidity
95%
Feels like
41°F
Dew Point
41°F
9 PM
42°F
0%
4mph
NE
Cloudy
Humidity
94%
Feels like
39°F
Dew Point
40°F
10 PM
41°F
0%
4mph
ENE
Cloudy
Humidity
93%
Feels like
38°F
Dew Point
39°F
11 PM
40°F
0%
4mph
ENE
Cloudy
Humidity
93%
Feels like
37°F
Dew Point
38°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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