Hourly Weather Forecast - Arlington Heights, IL

12 AM
24°F
20%
2mph
S
Cloudy
Humidity
55%
Feels like
24°F
Dew Point
10°F
1 AM
24°F
20%
2mph
S
Cloudy
Humidity
56%
Feels like
24°F
Dew Point
10°F
2 AM
24°F
20%
2mph
S
Cloudy
Humidity
57%
Feels like
24°F
Dew Point
11°F
3 AM
25°F
30%
2mph
S
30 % Chance of Heavy Snow
Humidity
58%
Feels like
25°F
Dew Point
12°F
4 AM
25°F
30%
2mph
S
30 % Chance of Heavy Snow
Humidity
61%
Feels like
25°F
Dew Point
14°F
5 AM
26°F
30%
3mph
S
30 % Chance of Heavy Snow
Humidity
62%
Feels like
26°F
Dew Point
15°F
6 AM
26°F
30%
3mph
S
30 % Chance of Heavy Snow
Humidity
61%
Feels like
26°F
Dew Point
15°F
7 AM
28°F
30%
3mph
S
30 % Chance of Heavy Snow
Humidity
59%
Feels like
28°F
Dew Point
15°F
7:17 AM
8 AM
29°F
30%
3mph
S
30% Chance of Heavy Snow
Humidity
58%
Feels like
26°F
Dew Point
17°F
9 AM
32°F
10%
3mph
SSE
Mostly Cloudy
Humidity
58%
Feels like
29°F
Dew Point
19°F
10 AM
34°F
10%
4mph
SSE
Mostly Cloudy
Humidity
54%
Feels like
31°F
Dew Point
19°F
11 AM
36°F
10%
4mph
SSE
Cloudy
Humidity
49%
Feels like
33°F
Dew Point
19°F
12 PM
38°F
10%
4mph
SSE
Cloudy
Humidity
47%
Feels like
35°F
Dew Point
19°F
1 PM
38°F
10%
4mph
SSE
Cloudy
Humidity
45%
Feels like
36°F
Dew Point
19°F
2 PM
39°F
10%
3mph
SSE
Cloudy
Humidity
45%
Feels like
36°F
Dew Point
19°F
3 PM
38°F
10%
3mph
SSE
Mostly Cloudy
Humidity
46%
Feels like
36°F
Dew Point
19°F
4 PM
38°F
10%
3mph
SSE
Mostly Cloudy
Humidity
48%
Feels like
35°F
Dew Point
20°F
4:23 PM
5 PM
37°F
10%
3mph
SSE
Partly Cloudy
Humidity
51%
Feels like
34°F
Dew Point
20°F
6 PM
37°F
10%
3mph
SSE
Partly Cloudy
Humidity
58%
Feels like
34°F
Dew Point
23°F
7 PM
37°F
10%
4mph
S
Partly Cloudy
Humidity
60%
Feels like
34°F
Dew Point
24°F
8 PM
38°F
10%
4mph
S
Mostly Cloudy
Humidity
58%
Feels like
35°F
Dew Point
24°F
9 PM
38°F
10%
4mph
S
Mostly Cloudy
Humidity
60%
Feels like
35°F
Dew Point
25°F
10 PM
38°F
10%
4mph
S
Mostly Cloudy
Humidity
63%
Feels like
35°F
Dew Point
26°F
11 PM
38°F
10%
3mph
S
Partly Cloudy
Humidity
68%
Feels like
35°F
Dew Point
28°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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