Hourly Weather Forecast - Mendon, IL

12 AM
24°F
10%
5mph
SSW
Mostly Clear
Humidity
81%
Feels like
18°F
Dew Point
19°F
1 AM
24°F
0%
5mph
SSW
Mostly Clear
Humidity
82%
Feels like
18°F
Dew Point
19°F
2 AM
24°F
0%
5mph
SSW
Mostly Clear
Humidity
82%
Feels like
18°F
Dew Point
19°F
3 AM
24°F
0%
5mph
SSW
Partly Cloudy
Humidity
83%
Feels like
18°F
Dew Point
20°F
4 AM
24°F
0%
5mph
S
Mostly Clear
Humidity
84%
Feels like
17°F
Dew Point
20°F
5 AM
24°F
0%
5mph
S
Mostly Clear
Humidity
84%
Feels like
17°F
Dew Point
20°F
6 AM
24°F
0%
6mph
S
Clear
Humidity
85%
Feels like
18°F
Dew Point
20°F
7 AM
26°F
0%
6mph
S
Clear
Humidity
84%
Feels like
19°F
Dew Point
22°F
7:20 AM
8 AM
27°F
0%
6mph
S
Sunny
Humidity
83%
Feels like
21°F
Dew Point
23°F
9 AM
29°F
0%
6mph
S
Sunny
Humidity
82%
Feels like
22°F
Dew Point
24°F
10 AM
31°F
0%
7mph
S
Mostly Sunny
Humidity
79%
Feels like
25°F
Dew Point
26°F
11 AM
34°F
0%
8mph
S
Partly Cloudy
Humidity
75%
Feels like
28°F
Dew Point
27°F
12 PM
37°F
0%
8mph
S
Partly Cloudy
Humidity
73%
Feels like
30°F
Dew Point
29°F
1 PM
38°F
0%
8mph
S
Partly Cloudy
Humidity
72%
Feels like
32°F
Dew Point
30°F
2 PM
39°F
0%
8mph
S
Partly Cloudy
Humidity
72%
Feels like
33°F
Dew Point
31°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

Thursday's Weather Outlook

Thursday'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