Hourly Weather Forecast - Arlington Heights, IL

12 AM
38°F
10%
4mph
S
Partly Cloudy
Humidity
72%
Feels like
35°F
Dew Point
29°F
1 AM
37°F
10%
3mph
SSW
Partly Cloudy
Humidity
76%
Feels like
35°F
Dew Point
31°F
2 AM
37°F
10%
3mph
SSW
Mostly Cloudy
Humidity
80%
Feels like
35°F
Dew Point
31°F
3 AM
37°F
10%
3mph
SSW
Mostly Cloudy
Humidity
82%
Feels like
35°F
Dew Point
32°F
4 AM
37°F
10%
3mph
SSW
Partly Cloudy
Humidity
85%
Feels like
35°F
Dew Point
33°F
5 AM
37°F
10%
3mph
SSW
Partly Cloudy
Humidity
86%
Feels like
34°F
Dew Point
33°F
6 AM
37°F
10%
3mph
SW
Partly Cloudy
Humidity
88%
Feels like
34°F
Dew Point
33°F
7 AM
37°F
10%
3mph
SW
Partly Cloudy
Humidity
84%
Feels like
34°F
Dew Point
32°F
7:17 AM
8 AM
37°F
20%
3mph
SW
Mostly Cloudy
Humidity
83%
Feels like
35°F
Dew Point
33°F
9 AM
39°F
20%
3mph
SW
Cloudy
Humidity
80%
Feels like
37°F
Dew Point
33°F
10 AM
40°F
20%
3mph
SW
Cloudy
Humidity
79%
Feels like
38°F
Dew Point
34°F
11 AM
41°F
10%
4mph
SW
Cloudy
Humidity
76%
Feels like
38°F
Dew Point
34°F
12 PM
41°F
10%
4mph
WSW
Cloudy
Humidity
76%
Feels like
39°F
Dew Point
34°F
1 PM
42°F
10%
3mph
WSW
Cloudy
Humidity
76%
Feels like
40°F
Dew Point
35°F
2 PM
41°F
10%
3mph
WSW
Cloudy
Humidity
78%
Feels like
41°F
Dew Point
35°F
3 PM
41°F
10%
2mph
W
Cloudy
Humidity
78%
Feels like
41°F
Dew Point
34°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday'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 person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

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

Cold Air Damming - Cause And Effects

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