Hourly Weather Forecast - Harrisburg, IL

12 AM
30°F
0%
4mph
NW
Mostly Cloudy
Humidity
80%
Feels like
26°F
Dew Point
24°F
1 AM
29°F
0%
4mph
NW
Partly Cloudy
Humidity
82%
Feels like
25°F
Dew Point
24°F
2 AM
29°F
0%
4mph
NW
Partly Cloudy
Humidity
84%
Feels like
25°F
Dew Point
24°F
3 AM
28°F
0%
3mph
WNW
Partly Cloudy
Humidity
86%
Feels like
24°F
Dew Point
24°F
4 AM
28°F
0%
3mph
WNW
Partly Cloudy
Humidity
87%
Feels like
24°F
Dew Point
24°F
5 AM
27°F
30%
3mph
WNW
30% Chance of Snow
Humidity
88%
Feels like
27°F
Dew Point
24°F
6 AM
27°F
0%
2mph
WNW
Partly Cloudy
Humidity
88%
Feels like
27°F
Dew Point
24°F
6:59 AM
7 AM
28°F
0%
2mph
W
Mostly Cloudy
Humidity
86%
Feels like
28°F
Dew Point
24°F
8 AM
29°F
0%
2mph
W
Mostly Cloudy
Humidity
80%
Feels like
29°F
Dew Point
23°F
9 AM
31°F
0%
2mph
W
Mostly Cloudy
Humidity
73%
Feels like
31°F
Dew Point
23°F
10 AM
33°F
0%
2mph
W
Mostly Cloudy
Humidity
65%
Feels like
33°F
Dew Point
22°F
11 AM
35°F
10%
2mph
WSW
Mostly Cloudy
Humidity
59%
Feels like
35°F
Dew Point
22°F
12 PM
36°F
10%
2mph
WSW
Mostly Cloudy
Humidity
55%
Feels like
36°F
Dew Point
22°F
1 PM
37°F
10%
3mph
SW
Mostly Cloudy
Humidity
52%
Feels like
37°F
Dew Point
22°F
2 PM
38°F
10%
3mph
SSW
Mostly Cloudy
Humidity
52%
Feels like
38°F
Dew Point
22°F
3 PM
37°F
10%
2mph
SSW
Cloudy
Humidity
55%
Feels like
37°F
Dew Point
23°F
4 PM
37°F
10%
2mph
S
Cloudy
Humidity
59%
Feels like
37°F
Dew Point
24°F
4:35 PM
5 PM
35°F
10%
2mph
S
Mostly Cloudy
Humidity
65%
Feels like
35°F
Dew Point
25°F
6 PM
35°F
10%
3mph
SSE
Mostly Cloudy
Humidity
70%
Feels like
35°F
Dew Point
26°F
7 PM
34°F
10%
3mph
SSE
Mostly Cloudy
Humidity
74%
Feels like
32°F
Dew Point
27°F
8 PM
34°F
10%
4mph
SSE
Mostly Cloudy
Humidity
75%
Feels like
31°F
Dew Point
27°F
9 PM
35°F
10%
4mph
SSE
Mostly Cloudy
Humidity
76%
Feels like
31°F
Dew Point
28°F
10 PM
35°F
10%
4mph
SSE
Mostly Cloudy
Humidity
76%
Feels like
31°F
Dew Point
28°F
11 PM
35°F
0%
5mph
S
Cloudy
Humidity
77%
Feels like
31°F
Dew Point
28°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