Hourly Weather Forecast - Grayslake, IL

12 AM
4°F
20%
8mph
NW
Partly Cloudy
Humidity
82%
Feels like
-9°F
Dew Point
0°F
1 AM
3°F
20%
8mph
NW
Partly Cloudy
Humidity
83%
Feels like
-10°F
Dew Point
-1°F
2 AM
2°F
20%
9mph
NW
Partly Cloudy
Humidity
83%
Feels like
-12°F
Dew Point
-2°F
3 AM
1°F
20%
9mph
WNW
Partly Cloudy
Humidity
82%
Feels like
-14°F
Dew Point
-4°F
4 AM
-1°F
10%
8mph
WNW
Very Cold
Humidity
82%
Feels like
-15°F
Dew Point
-5°F
5 AM
-2°F
10%
8mph
WNW
Very Cold
Humidity
81%
Feels like
-16°F
Dew Point
-6°F
6 AM
-2°F
0%
8mph
WNW
Very Cold
Humidity
80%
Feels like
-16°F
Dew Point
-7°F
7 AM
-1°F
10%
8mph
WNW
Very Cold
Humidity
78%
Feels like
-16°F
Dew Point
-7°F
7:13 AM
8 AM
0°F
10%
8mph
WNW
Sunny
Humidity
75%
Feels like
-15°F
Dew Point
-6°F
9 AM
1°F
10%
8mph
WNW
Sunny
Humidity
72%
Feels like
-13°F
Dew Point
-6°F
10 AM
2°F
10%
8mph
WNW
Sunny
Humidity
68%
Feels like
-12°F
Dew Point
-6°F
11 AM
4°F
10%
8mph
WNW
Mostly Sunny
Humidity
66%
Feels like
-10°F
Dew Point
-5°F
12 PM
4°F
10%
8mph
WNW
Mostly Sunny
Humidity
63%
Feels like
-9°F
Dew Point
-5°F
1 PM
5°F
10%
8mph
WNW
Mostly Sunny
Humidity
63%
Feels like
-8°F
Dew Point
-5°F
2 PM
5°F
0%
7mph
WNW
Partly Cloudy
Humidity
63%
Feels like
-7°F
Dew Point
-5°F
3 PM
4°F
0%
7mph
WNW
Partly Cloudy
Humidity
64%
Feels like
-8°F
Dew Point
-5°F
4 PM
3°F
0%
6mph
WNW
Mostly Sunny
Humidity
68%
Feels like
-9°F
Dew Point
-5°F
4:20 PM
5 PM
1°F
0%
6mph
WNW
Partly Cloudy
Humidity
70%
Feels like
-10°F
Dew Point
-6°F
6 PM
1°F
10%
5mph
W
Partly Cloudy
Humidity
70%
Feels like
-10°F
Dew Point
-6°F
7 PM
2°F
10%
4mph
W
Mostly Cloudy
Humidity
72%
Feels like
-7°F
Dew Point
-5°F
8 PM
2°F
10%
4mph
WNW
Mostly Cloudy
Humidity
72%
Feels like
-6°F
Dew Point
-5°F
9 PM
2°F
10%
4mph
WNW
Mostly Cloudy
Humidity
73%
Feels like
-6°F
Dew Point
-4°F
10 PM
3°F
10%
4mph
WNW
Cloudy
Humidity
73%
Feels like
-5°F
Dew Point
-4°F
11 PM
3°F
10%
4mph
W
Cloudy
Humidity
73%
Feels like
-5°F
Dew Point
-3°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, Flooding Rain Impacts 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