Hourly Weather Forecast - Crystal Lake, IL

12 AM
8°F
10%
9mph
W
Clear
Humidity
67%
Feels like
-6°F
Dew Point
-1°F
1 AM
7°F
0%
9mph
W
Clear
Humidity
68%
Feels like
-7°F
Dew Point
-1°F
2 AM
7°F
0%
9mph
W
Clear
Humidity
69%
Feels like
-7°F
Dew Point
-1°F
3 AM
6°F
0%
9mph
W
Clear
Humidity
70%
Feels like
-8°F
Dew Point
-1°F
4 AM
6°F
0%
9mph
W
Clear
Humidity
70%
Feels like
-8°F
Dew Point
-2°F

Snow Forecast Through Monday

Powerful Winter Storm Taking Shape Across the Upper Midwest

A major winter storm is taking aim at the Upper Midwest and Great Lakes.

Today's Weather Outlook

Weekend Weather Outlook

Satellite image of Hurricane Melissa

2025 Year in Review: Powerful Hurricanes in the Atlantic

A frame from an automated video of a tornado and its mesocyclone that derailed multiple train cars near Enderlin, North Dakota and destroyed multiple homes on June 20, 2025. (ChrisWx via Wikimedia Commons)

2025 Year in Review: Extreme Weather - January through June

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Hurricane Erick at its peak intensity before making landfall on Guerrero, Mexico on June 19, 2025 (NOAA/Wikimedia Commons)

2025 Year in Review: Active Tropical Season for The Pacific

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide