Hourly Weather Forecast - Mason, IL

2 AM
30°F
0%
6mph
WNW
Mostly Cloudy
Humidity
74%
Feels like
24°F
Dew Point
23°F
3 AM
30°F
0%
6mph
WNW
Mostly Cloudy
Humidity
74%
Feels like
23°F
Dew Point
22°F
4 AM
29°F
0%
6mph
WNW
Partly Cloudy
Humidity
75%
Feels like
23°F
Dew Point
22°F
5 AM
29°F
0%
5mph
WNW
Mostly Cloudy
Humidity
74%
Feels like
23°F
Dew Point
21°F
6 AM
28°F
0%
5mph
WNW
Mostly Cloudy
Humidity
73%
Feels like
23°F
Dew Point
21°F
7 AM
28°F
0%
5mph
WNW
Mostly Cloudy
Humidity
71%
Feels like
23°F
Dew Point
20°F
7:03 AM
8 AM
29°F
0%
5mph
WNW
Mostly Cloudy
Humidity
74%
Feels like
23°F
Dew Point
22°F
9 AM
29°F
0%
4mph
W
Partly Cloudy
Humidity
73%
Feels like
25°F
Dew Point
22°F
10 AM
30°F
0%
4mph
W
Partly Cloudy
Humidity
71%
Feels like
26°F
Dew Point
22°F
11 AM
31°F
10%
4mph
WSW
Mostly Cloudy
Humidity
69%
Feels like
27°F
Dew Point
22°F
12 PM
32°F
10%
4mph
WSW
Mostly Cloudy
Humidity
67%
Feels like
28°F
Dew Point
22°F
1 PM
33°F
10%
4mph
SW
Mostly Cloudy
Humidity
63%
Feels like
29°F
Dew Point
22°F
2 PM
33°F
10%
4mph
SW
Cloudy
Humidity
62%
Feels like
29°F
Dew Point
22°F
3 PM
34°F
20%
4mph
SSW
Cloudy
Humidity
60%
Feels like
30°F
Dew Point
21°F
4 PM
33°F
30%
3mph
S
30% Chance of Flurries
Humidity
63%
Feels like
30°F
Dew Point
22°F
4:32 PM
5 PM
32°F
40%
4mph
SE
40% Chance of Snow
Humidity
72%
Feels like
29°F
Dew Point
24°F
6 PM
32°F
50%
4mph
SE
50% Chance of Heavy Snow
Humidity
79%
Feels like
28°F
Dew Point
26°F
7 PM
32°F
50%
5mph
SE
50% Chance of Heavy Snow
Humidity
82%
Feels like
27°F
Dew Point
27°F
8 PM
32°F
60%
6mph
SE
60% Chance of Snow
Humidity
87%
Feels like
26°F
Dew Point
28°F
9 PM
32°F
50%
6mph
SE
50% Chance Frozen Mix
Humidity
89%
Feels like
26°F
Dew Point
29°F
10 PM
32°F
40%
7mph
SE
40% Chance Frozen Mix
Humidity
89%
Feels like
25°F
Dew Point
29°F
11 PM
32°F
40%
8mph
SE
40% Chance of Light Rain
Humidity
89%
Feels like
25°F
Dew Point
29°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide