Hourly Weather Forecast - Harrisburg, IL

12 AM
42°F
10%
11mph
SW
Mostly Cloudy
Humidity
73%
Feels like
36°F
Dew Point
34°F
1 AM
42°F
10%
11mph
SW
Cloudy
Humidity
73%
Feels like
36°F
Dew Point
34°F
2 AM
42°F
10%
11mph
SW
Cloudy
Humidity
75%
Feels like
36°F
Dew Point
35°F
3 AM
42°F
20%
10mph
SW
Cloudy
Humidity
75%
Feels like
37°F
Dew Point
35°F
4 AM
42°F
20%
10mph
SW
Cloudy
Humidity
77%
Feels like
37°F
Dew Point
36°F
5 AM
42°F
30%
9mph
SW
30% Chance of Light Rain
Humidity
81%
Feels like
37°F
Dew Point
37°F
6 AM
42°F
20%
9mph
SW
Cloudy
Humidity
82%
Feels like
37°F
Dew Point
37°F
6:58 AM
7 AM
43°F
10%
8mph
WSW
Mostly Cloudy
Humidity
82%
Feels like
38°F
Dew Point
38°F
8 AM
44°F
10%
8mph
WSW
Mostly Cloudy
Humidity
79%
Feels like
39°F
Dew Point
37°F
9 AM
44°F
10%
8mph
W
Mostly Cloudy
Humidity
74%
Feels like
40°F
Dew Point
37°F
10 AM
44°F
10%
9mph
WNW
Mostly Cloudy
Humidity
67%
Feels like
39°F
Dew Point
34°F
11 AM
44°F
0%
10mph
WNW
Mostly Cloudy
Humidity
59%
Feels like
38°F
Dew Point
31°F
12 PM
43°F
0%
11mph
WNW
Mostly Cloudy
Humidity
54%
Feels like
37°F
Dew Point
28°F
1 PM
42°F
0%
11mph
WNW
Mostly Cloudy
Humidity
54%
Feels like
35°F
Dew Point
26°F
2 PM
40°F
0%
11mph
NW
Mostly Cloudy
Humidity
56%
Feels like
33°F
Dew Point
26°F
3 PM
38°F
0%
10mph
NW
Mostly Cloudy
Humidity
59%
Feels like
32°F
Dew Point
25°F
4 PM
37°F
0%
9mph
NW
Mostly Cloudy
Humidity
62%
Feels like
31°F
Dew Point
25°F
4:35 PM
5 PM
36°F
0%
7mph
NW
Partly Cloudy
Humidity
65%
Feels like
30°F
Dew Point
25°F
6 PM
35°F
0%
6mph
NW
Partly Cloudy
Humidity
69%
Feels like
30°F
Dew Point
26°F
7 PM
34°F
0%
6mph
NW
Partly Cloudy
Humidity
71%
Feels like
29°F
Dew Point
26°F
8 PM
33°F
0%
6mph
NW
Partly Cloudy
Humidity
72%
Feels like
28°F
Dew Point
25°F
9 PM
33°F
0%
5mph
NW
Partly Cloudy
Humidity
72%
Feels like
27°F
Dew Point
24°F
10 PM
32°F
0%
5mph
NW
Partly Cloudy
Humidity
72%
Feels like
27°F
Dew Point
24°F
11 PM
31°F
0%
4mph
NW
Mostly Cloudy
Humidity
74%
Feels like
27°F
Dew Point
24°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday'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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Outdoor Sports Guide