Hourly Weather Forecast - Sullivan, IL

12 AM
10°F
10%
4mph
N
Clear
Humidity
85%
Feels like
2°F
Dew Point
7°F
1 AM
10°F
10%
4mph
N
Mostly Clear
Humidity
83%
Feels like
2°F
Dew Point
6°F
2 AM
11°F
10%
4mph
N
Mostly Clear
Humidity
80%
Feels like
3°F
Dew Point
6°F
3 AM
11°F
10%
5mph
N
Mostly Clear
Humidity
78%
Feels like
3°F
Dew Point
6°F
4 AM
11°F
10%
5mph
NNE
Mostly Clear
Humidity
77%
Feels like
3°F
Dew Point
5°F
5 AM
11°F
10%
5mph
NNE
Mostly Clear
Humidity
77%
Feels like
2°F
Dew Point
5°F
6 AM
11°F
10%
5mph
NNE
Mostly Clear
Humidity
77%
Feels like
3°F
Dew Point
5°F
7 AM
12°F
10%
5mph
NNE
Mostly Clear
Humidity
73%
Feels like
4°F
Dew Point
5°F
7:07 AM
8 AM
14°F
10%
5mph
NNE
Partly Cloudy
Humidity
69%
Feels like
6°F
Dew Point
6°F
9 AM
16°F
10%
5mph
NE
Partly Cloudy
Humidity
67%
Feels like
9°F
Dew Point
7°F

Snowfall forecast Through Tonight

Snow To Spread Across Appalachians Into Mid-Atlantic

A winter system will bring snow from the southern Appalachians to Mid-Atlantic through this evening.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Image courtesy of PeakPX.

Top 10 Winter Energy Saving Tips

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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