Hourly Weather Forecast - Lanark, IL

3 PM
35°F
10%
8mph
S
Cloudy
Humidity
84%
Feels like
28°F
Dew Point
30°F
4 PM
35°F
10%
9mph
S
Cloudy
Humidity
85%
Feels like
28°F
Dew Point
31°F
4:27 PM
5 PM
35°F
70%
11mph
SSE
70% Chance of Light Rain
Humidity
87%
Feels like
27°F
Dew Point
31°F
6 PM
35°F
20%
13mph
S
Cloudy
Humidity
88%
Feels like
27°F
Dew Point
32°F
7 PM
36°F
40%
14mph
S
40% Chance of Light Rain
Humidity
89%
Feels like
27°F
Dew Point
33°F
8 PM
37°F
50%
15mph
SSW
50% Chance of Light Rain
Humidity
91%
Feels like
27°F
Dew Point
34°F
9 PM
37°F
50%
16mph
SSW
50% Chance of Light Rain
Humidity
92%
Feels like
28°F
Dew Point
35°F
10 PM
37°F
30%
16mph
SW
30% Chance of Light Rain
Humidity
93%
Feels like
28°F
Dew Point
35°F
11 PM
37°F
30%
16mph
WSW
30% Chance of Light Rain
Humidity
94%
Feels like
28°F
Dew Point
36°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