Hourly Weather Forecast - Cornwall, Ontario, CA

12 AM
-13°F
10%
4mph
WSW
Very Cold
Humidity
66%
Feels like
-24°F
Dew Point
-21°F
1 AM
-14°F
10%
4mph
WSW
Very Cold
Humidity
65%
Feels like
-25°F
Dew Point
-22°F
2 AM
-15°F
10%
4mph
W
Very Cold
Humidity
66%
Feels like
-26°F
Dew Point
-23°F
3 AM
-16°F
10%
4mph
W
Very Cold
Humidity
65%
Feels like
-27°F
Dew Point
-24°F
4 AM
-17°F
10%
4mph
W
Very Cold
Humidity
66%
Feels like
-28°F
Dew Point
-25°F
5 AM
-17°F
10%
4mph
W
Very Cold
Humidity
65%
Feels like
-29°F
Dew Point
-25°F
6 AM
-18°F
10%
4mph
W
Very Cold
Humidity
63%
Feels like
-29°F
Dew Point
-26°F

Snow Forecast through Sunday

Series of Weather Systems Cover Great Lakes, East in Snow

Two main areas of low pressure will produce snow in the Upper Midwest, Great Lakes and Eastern U.S.

Monday's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

Vehicle driving in wintry conditions

Prepare Your Car for Cold Weather

(Image provided by NOAA)

Polar Vortex: What Is It?

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

Safety Tips For Icy Surfaces

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide