Hourly Weather Forecast - Potomac, IL

11 AM
35°F
70%
18mph
WNW
70% Chance Frozen Mix
Humidity
90%
Feels like
24°F
Dew Point
32°F
12 PM
34°F
70%
19mph
NW
70% Chance Frozen Mix
Humidity
91%
Feels like
23°F
Dew Point
32°F
1 PM
33°F
30%
20mph
NW
30% Chance of Snow
Humidity
89%
Feels like
21°F
Dew Point
30°F
2 PM
32°F
10%
19mph
NW
Cloudy
Humidity
86%
Feels like
20°F
Dew Point
29°F
3 PM
31°F
10%
19mph
NW
Cloudy
Humidity
83%
Feels like
20°F
Dew Point
27°F
4 PM
31°F
0%
17mph
NW
Cloudy
Humidity
81%
Feels like
19°F
Dew Point
25°F
4:24 PM
5 PM
29°F
0%
15mph
NW
Cloudy
Humidity
79%
Feels like
18°F
Dew Point
24°F
6 PM
29°F
0%
13mph
NW
Mostly Cloudy
Humidity
78%
Feels like
18°F
Dew Point
23°F
7 PM
28°F
0%
12mph
NW
Partly Cloudy
Humidity
79%
Feels like
18°F
Dew Point
22°F
8 PM
27°F
0%
11mph
NW
Mostly Cloudy
Humidity
81%
Feels like
17°F
Dew Point
22°F
9 PM
27°F
0%
10mph
NW
Cloudy
Humidity
82%
Feels like
17°F
Dew Point
22°F
10 PM
27°F
0%
10mph
NW
Cloudy
Humidity
83%
Feels like
17°F
Dew Point
22°F
11 PM
27°F
30%
10mph
NW
30% Chance of Snow
Humidity
84%
Feels like
17°F
Dew Point
22°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

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

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Traffic Cameras

Weather Cameras

Outdoor Sports Guide