Hourly Weather Forecast - Arlington Heights, IL

12 AM
36°F
0%
7mph
S
Mostly Cloudy
Humidity
84%
Feels like
30°F
Dew Point
31°F
1 AM
37°F
0%
7mph
S
Mostly Cloudy
Humidity
86%
Feels like
31°F
Dew Point
33°F
2 AM
38°F
0%
7mph
S
Mostly Cloudy
Humidity
88%
Feels like
33°F
Dew Point
35°F
3 AM
40°F
20%
7mph
S
Cloudy
Humidity
89%
Feels like
34°F
Dew Point
37°F
4 AM
41°F
30%
8mph
S
30% Chance of Light Rain
Humidity
91%
Feels like
36°F
Dew Point
38°F
5 AM
42°F
30%
8mph
S
30% Chance of Light Rain
Humidity
92%
Feels like
37°F
Dew Point
40°F
6 AM
43°F
40%
9mph
S
40% Chance of Light Rain
Humidity
90%
Feels like
38°F
Dew Point
40°F
7 AM
44°F
40%
9mph
S
40% Chance of Light Rain
Humidity
90%
Feels like
40°F
Dew Point
42°F
7:15 AM
8 AM
46°F
30%
9mph
S
30% Chance of Light Rain
Humidity
91%
Feels like
41°F
Dew Point
44°F
9 AM
47°F
30%
9mph
S
30% Chance of Light Rain
Humidity
91%
Feels like
43°F
Dew Point
45°F
10 AM
48°F
50%
9mph
SSW
50% Chance of Light Rain
Humidity
92%
Feels like
44°F
Dew Point
46°F
11 AM
48°F
80%
9mph
SSW
80% Chance of Light Rain
Humidity
90%
Feels like
44°F
Dew Point
46°F
12 PM
48°F
80%
10mph
SSW
80% Chance of Light Rain
Humidity
88%
Feels like
43°F
Dew Point
44°F
1 PM
47°F
70%
9mph
SW
70% Chance of Light Rain
Humidity
86%
Feels like
43°F
Dew Point
43°F
2 PM
45°F
50%
7mph
WSW
50% Chance of Light Rain
Humidity
84%
Feels like
41°F
Dew Point
40°F
3 PM
42°F
30%
7mph
W
30% Chance of Light Rain
Humidity
81%
Feels like
38°F
Dew Point
37°F
4 PM
40°F
20%
7mph
W
Mostly Cloudy
Humidity
81%
Feels like
35°F
Dew Point
35°F
4:22 PM
5 PM
37°F
20%
7mph
WSW
Partly Cloudy
Humidity
84%
Feels like
31°F
Dew Point
32°F
6 PM
34°F
30%
7mph
WSW
30% Chance of Snow
Humidity
86%
Feels like
27°F
Dew Point
30°F
7 PM
31°F
30%
8mph
W
30% Chance of Snow
Humidity
87%
Feels like
23°F
Dew Point
27°F
8 PM
29°F
10%
9mph
W
Partly Cloudy
Humidity
78%
Feels like
21°F
Dew Point
23°F
9 PM
27°F
30%
9mph
W
30% Chance of Snow
Humidity
71%
Feels like
18°F
Dew Point
19°F
10 PM
24°F
10%
10mph
W
Partly Cloudy
Humidity
65%
Feels like
14°F
Dew Point
14°F
11 PM
22°F
10%
11mph
W
Partly Cloudy
Humidity
62%
Feels like
11°F
Dew Point
11°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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