Hourly Weather Forecast - Sullivan, IL

12 AM
37°F
0%
4mph
ESE
Foggy
Humidity
99%
Feels like
33°F
Dew Point
36°F
1 AM
36°F
10%
4mph
ESE
Foggy
Humidity
100%
Feels like
33°F
Dew Point
36°F
2 AM
36°F
20%
4mph
ESE
Foggy
Humidity
100%
Feels like
33°F
Dew Point
36°F
3 AM
37°F
40%
5mph
ESE
40% Chance of Light Rain
Humidity
100%
Feels like
33°F
Dew Point
37°F
4 AM
37°F
60%
5mph
ESE
60% Chance of Light Rain
Humidity
100%
Feels like
33°F
Dew Point
37°F
5 AM
38°F
80%
6mph
ESE
80% Chance of Light Rain
Humidity
100%
Feels like
34°F
Dew Point
38°F
6 AM
40°F
80%
6mph
ESE
80% Chance of Light Rain
Humidity
96%
Feels like
36°F
Dew Point
39°F
6:24 AM
7 AM
43°F
70%
6mph
ESE
70% Chance of Light Rain
Humidity
92%
Feels like
39°F
Dew Point
40°F
8 AM
46°F
70%
7mph
SE
70% Chance of Light Rain
Humidity
88%
Feels like
42°F
Dew Point
42°F
9 AM
48°F
80%
8mph
SE
80% Chance of Light Rain
Humidity
84%
Feels like
45°F
Dew Point
44°F
10 AM
51°F
80%
7mph
SSE
80% Chance of Light Rain
Humidity
82%
Feels like
51°F
Dew Point
46°F
11 AM
53°F
90%
8mph
S
Thunderstorms
Humidity
81%
Feels like
53°F
Dew Point
47°F
12 PM
55°F
90%
9mph
S
Thunderstorms
Humidity
79%
Feels like
55°F
Dew Point
49°F
1 PM
57°F
90%
9mph
S
Thunderstorms
Humidity
76%
Feels like
57°F
Dew Point
50°F
2 PM
58°F
90%
9mph
S
Thunderstorms
Humidity
75%
Feels like
58°F
Dew Point
50°F
3 PM
57°F
90%
8mph
S
Thunderstorms
Humidity
78%
Feels like
57°F
Dew Point
51°F
4 PM
56°F
90%
5mph
S
Thunderstorms
Humidity
84%
Feels like
56°F
Dew Point
51°F
5 PM
53°F
90%
5mph
SSE
Thunderstorms
Humidity
91%
Feels like
53°F
Dew Point
51°F
5:48 PM
6 PM
51°F
80%
4mph
ESE
80% Chance of Rain
Humidity
97%
Feels like
51°F
Dew Point
51°F
7 PM
50°F
80%
5mph
E
80% Chance of Rain
Humidity
100%
Feels like
50°F
Dew Point
50°F
8 PM
50°F
80%
6mph
E
80% Chance of Rain
Humidity
100%
Feels like
50°F
Dew Point
50°F
9 PM
49°F
70%
6mph
ESE
70% Chance of Rain
Humidity
100%
Feels like
47°F
Dew Point
49°F
10 PM
49°F
70%
7mph
ESE
70% Chance of Rain
Humidity
100%
Feels like
46°F
Dew Point
49°F
11 PM
49°F
70%
6mph
ESE
70% Chance of Rain
Humidity
100%
Feels like
46°F
Dew Point
49°F

Snow and Ice Accumulations through Tuesday AM

Wintry Disturbance Bisects U.S. Mid-Latitudes

A wintry disturbance will bring icing and light snow from the central Plains today through the Northeast on Tuesday.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

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