Hourly Weather Forecast - McHenry, IL

12 AM
48°F
10%
7mph
WNW
Cloudy
Humidity
95%
Feels like
45°F
Dew Point
47°F
1 AM
48°F
10%
7mph
WNW
Mostly Cloudy
Humidity
94%
Feels like
44°F
Dew Point
46°F
2 AM
47°F
10%
8mph
WNW
Mostly Cloudy
Humidity
94%
Feels like
43°F
Dew Point
45°F
3 AM
46°F
10%
8mph
WNW
Mostly Cloudy
Humidity
95%
Feels like
42°F
Dew Point
44°F
4 AM
45°F
10%
8mph
NW
Mostly Cloudy
Humidity
96%
Feels like
40°F
Dew Point
43°F
5 AM
44°F
10%
8mph
NW
Cloudy
Humidity
96%
Feels like
39°F
Dew Point
42°F
6 AM
43°F
10%
8mph
NW
Cloudy
Humidity
95%
Feels like
38°F
Dew Point
42°F
7 AM
43°F
10%
8mph
NW
Cloudy
Humidity
93%
Feels like
38°F
Dew Point
41°F
7:21 AM
8 AM
43°F
10%
8mph
NNW
Cloudy
Humidity
89%
Feels like
39°F
Dew Point
40°F
9 AM
44°F
10%
7mph
NNW
Cloudy
Humidity
86%
Feels like
40°F
Dew Point
40°F
10 AM
44°F
10%
8mph
NNW
Cloudy
Humidity
82%
Feels like
40°F
Dew Point
39°F
11 AM
45°F
10%
8mph
N
Cloudy
Humidity
79%
Feels like
41°F
Dew Point
39°F
12 PM
45°F
10%
8mph
N
Cloudy
Humidity
77%
Feels like
41°F
Dew Point
38°F
1 PM
44°F
0%
7mph
N
Cloudy
Humidity
77%
Feels like
40°F
Dew Point
37°F
2 PM
43°F
10%
7mph
N
Cloudy
Humidity
79%
Feels like
39°F
Dew Point
37°F
3 PM
42°F
10%
6mph
NNE
Cloudy
Humidity
82%
Feels like
38°F
Dew Point
37°F
4 PM
41°F
10%
5mph
NNE
Cloudy
Humidity
83%
Feels like
37°F
Dew Point
36°F
4:26 PM
5 PM
41°F
10%
5mph
NE
Cloudy
Humidity
84%
Feels like
38°F
Dew Point
36°F
6 PM
41°F
10%
4mph
NE
Cloudy
Humidity
85%
Feels like
38°F
Dew Point
37°F
7 PM
41°F
10%
4mph
ENE
Cloudy
Humidity
85%
Feels like
39°F
Dew Point
37°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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