Hourly Weather Forecast - Crystal Lake, IL

10 AM
28°F
30%
13mph
NNW
30% Chance of Snow
Humidity
85%
Feels like
17°F
Dew Point
24°F
11 AM
27°F
10%
14mph
NNW
Partly Cloudy
Humidity
80%
Feels like
16°F
Dew Point
22°F
12 PM
26°F
10%
14mph
NNW
Cloudy
Humidity
75%
Feels like
15°F
Dew Point
20°F
1 PM
26°F
10%
13mph
NNW
Cloudy
Humidity
74%
Feels like
15°F
Dew Point
19°F
2 PM
26°F
10%
12mph
NNW
Mostly Cloudy
Humidity
75%
Feels like
15°F
Dew Point
19°F
3 PM
25°F
10%
11mph
NNW
Partly Cloudy
Humidity
75%
Feels like
15°F
Dew Point
18°F
4 PM
25°F
10%
9mph
NW
Mostly Cloudy
Humidity
75%
Feels like
16°F
Dew Point
19°F
4:21 PM
5 PM
25°F
10%
8mph
NW
Mostly Cloudy
Humidity
78%
Feels like
16°F
Dew Point
19°F
6 PM
26°F
10%
7mph
NW
Cloudy
Humidity
81%
Feels like
18°F
Dew Point
20°F
7 PM
26°F
10%
6mph
NW
Mostly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
21°F
8 PM
25°F
10%
6mph
NW
Cloudy
Humidity
82%
Feels like
18°F
Dew Point
20°F
9 PM
25°F
10%
5mph
NW
Mostly Cloudy
Humidity
81%
Feels like
18°F
Dew Point
20°F
10 PM
24°F
10%
5mph
NW
Mostly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
19°F
11 PM
24°F
10%
5mph
NW
Mostly Cloudy
Humidity
82%
Feels like
17°F
Dew Point
19°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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Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide