Hourly Weather Forecast - Crystal Lake, IL

12 AM
21°F
0%
7mph
S
Mostly Cloudy
Humidity
65%
Feels like
12°F
Dew Point
11°F
1 AM
22°F
0%
8mph
S
Cloudy
Humidity
65%
Feels like
12°F
Dew Point
12°F
2 AM
22°F
0%
9mph
S
Cloudy
Humidity
64%
Feels like
13°F
Dew Point
12°F
3 AM
23°F
0%
9mph
S
Cloudy
Humidity
64%
Feels like
13°F
Dew Point
13°F
4 AM
24°F
0%
9mph
S
Cloudy
Humidity
64%
Feels like
14°F
Dew Point
13°F
5 AM
24°F
0%
10mph
S
Cloudy
Humidity
67%
Feels like
14°F
Dew Point
14°F
6 AM
24°F
10%
10mph
S
Cloudy
Humidity
67%
Feels like
14°F
Dew Point
15°F
7 AM
25°F
10%
10mph
S
Cloudy
Humidity
68%
Feels like
15°F
Dew Point
16°F
7:18 AM
8 AM
27°F
10%
10mph
S
Cloudy
Humidity
65%
Feels like
18°F
Dew Point
17°F
9 AM
30°F
10%
10mph
SSW
Cloudy
Humidity
62%
Feels like
21°F
Dew Point
18°F
10 AM
32°F
10%
10mph
SSW
Cloudy
Humidity
60%
Feels like
24°F
Dew Point
19°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Sunday Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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