Hourly Weather Forecast - Harrisburg, IL

11 AM
43°F
10%
11mph
WNW
Mostly Cloudy
Humidity
66%
Feels like
37°F
Dew Point
32°F
12 PM
41°F
10%
12mph
WNW
Mostly Cloudy
Humidity
61%
Feels like
35°F
Dew Point
29°F
1 PM
40°F
0%
12mph
WNW
Mostly Cloudy
Humidity
59%
Feels like
33°F
Dew Point
27°F
2 PM
38°F
0%
11mph
NW
Mostly Cloudy
Humidity
59%
Feels like
31°F
Dew Point
26°F
3 PM
37°F
0%
10mph
NW
Mostly Cloudy
Humidity
62%
Feels like
30°F
Dew Point
25°F
4 PM
36°F
0%
9mph
NW
Mostly Cloudy
Humidity
64%
Feels like
29°F
Dew Point
25°F
4:35 PM
5 PM
35°F
0%
8mph
NW
Mostly Cloudy
Humidity
67%
Feels like
29°F
Dew Point
25°F
6 PM
34°F
0%
7mph
NW
Mostly Cloudy
Humidity
70%
Feels like
28°F
Dew Point
26°F
7 PM
33°F
0%
6mph
NW
Mostly Cloudy
Humidity
73%
Feels like
28°F
Dew Point
25°F
8 PM
32°F
0%
6mph
NW
Mostly Cloudy
Humidity
75%
Feels like
27°F
Dew Point
25°F
9 PM
32°F
0%
5mph
NW
Mostly Cloudy
Humidity
76%
Feels like
27°F
Dew Point
25°F
10 PM
31°F
0%
5mph
NW
Mostly Cloudy
Humidity
78%
Feels like
26°F
Dew Point
25°F
11 PM
30°F
0%
4mph
NW
Mostly Cloudy
Humidity
79%
Feels like
26°F
Dew Point
24°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

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide