Hourly Weather Forecast - Lemont, IL

11 AM
30°F
70%
14mph
NNW
70% Chance of Heavy Snow
Humidity
93%
Feels like
19°F
Dew Point
28°F
12 PM
29°F
10%
15mph
NNW
Cloudy
Humidity
88%
Feels like
18°F
Dew Point
26°F
1 PM
29°F
10%
14mph
NNW
Cloudy
Humidity
85%
Feels like
17°F
Dew Point
25°F
2 PM
28°F
0%
13mph
NNW
Mostly Cloudy
Humidity
85%
Feels like
17°F
Dew Point
24°F
3 PM
28°F
0%
12mph
NNW
Mostly Cloudy
Humidity
84%
Feels like
17°F
Dew Point
23°F
4 PM
27°F
0%
11mph
NW
Partly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
23°F
4:21 PM
5 PM
27°F
0%
9mph
NW
Mostly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
22°F
6 PM
27°F
0%
7mph
NW
Mostly Cloudy
Humidity
84%
Feels like
19°F
Dew Point
23°F
7 PM
27°F
0%
6mph
NW
Mostly Cloudy
Humidity
84%
Feels like
20°F
Dew Point
23°F
8 PM
27°F
0%
6mph
NW
Cloudy
Humidity
86%
Feels like
20°F
Dew Point
24°F
9 PM
28°F
0%
6mph
NW
Cloudy
Humidity
86%
Feels like
21°F
Dew Point
24°F
10 PM
28°F
0%
5mph
NW
Cloudy
Humidity
84%
Feels like
21°F
Dew Point
23°F
11 PM
27°F
0%
5mph
NW
Mostly Cloudy
Humidity
85%
Feels like
22°F
Dew Point
23°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

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Outdoor Sports Guide