Hourly Weather Forecast - Cornwall, Ontario, CA

12 AM
21°F
100%
8mph
ENE
Freezing Rain
Humidity
78%
Feels like
12°F
Dew Point
16°F
1 AM
22°F
100%
8mph
NE
Freezing Rain
Humidity
82%
Feels like
13°F
Dew Point
17°F
2 AM
23°F
100%
9mph
ENE
Freezing Rain
Humidity
86%
Feels like
14°F
Dew Point
20°F
3 AM
25°F
90%
8mph
ENE
Freezing Rain
Humidity
90%
Feels like
16°F
Dew Point
22°F
4 AM
27°F
100%
8mph
ENE
Freezing Rain
Humidity
92%
Feels like
18°F
Dew Point
24°F
5 AM
28°F
90%
8mph
ENE
Frozen Mix
Humidity
90%
Feels like
20°F
Dew Point
26°F
6 AM
29°F
90%
8mph
ENE
Frozen Mix
Humidity
92%
Feels like
22°F
Dew Point
27°F
7 AM
31°F
70%
6mph
ENE
70% Chance Frozen Mix
Humidity
91%
Feels like
25°F
Dew Point
28°F
7:37 AM
8 AM
32°F
70%
3mph
E
70% Chance Freezing Rain
Humidity
93%
Feels like
29°F
Dew Point
30°F
9 AM
34°F
50%
3mph
SSW
50% Chance of Light Rain
Humidity
91%
Feels like
31°F
Dew Point
32°F
10 AM
35°F
30%
9mph
SW
30% Chance of Light Rain
Humidity
90%
Feels like
29°F
Dew Point
33°F
11 AM
37°F
30%
12mph
SW
30% Chance of Light Rain
Humidity
85%
Feels like
29°F
Dew Point
33°F
12 PM
38°F
30%
14mph
SW
30% Chance of Light Rain
Humidity
80%
Feels like
29°F
Dew Point
32°F
1 PM
38°F
30%
15mph
SW
30% Chance of Light Rain
Humidity
76%
Feels like
29°F
Dew Point
31°F
2 PM
36°F
10%
16mph
SW
Mostly Cloudy
Humidity
75%
Feels like
27°F
Dew Point
29°F
3 PM
33°F
10%
16mph
SW
Mostly Cloudy
Humidity
75%
Feels like
23°F
Dew Point
26°F
4 PM
31°F
30%
16mph
SW
30% Chance of Heavy Snow
Humidity
75%
Feels like
20°F
Dew Point
24°F
4:25 PM
5 PM
30°F
30%
16mph
SW
30% Chance of Snow
Humidity
75%
Feels like
19°F
Dew Point
23°F
6 PM
26°F
30%
15mph
SW
30% Chance of Snow
Humidity
86%
Feels like
14°F
Dew Point
23°F
7 PM
23°F
20%
15mph
SW
Cloudy
Humidity
96%
Feels like
10°F
Dew Point
22°F
8 PM
19°F
20%
16mph
SW
Foggy
Humidity
100%
Feels like
4°F
Dew Point
19°F
9 PM
18°F
30%
17mph
SW
30% Chance of Snow
Humidity
96%
Feels like
3°F
Dew Point
17°F
10 PM
17°F
30%
17mph
WSW
30% Chance of Snow
Humidity
89%
Feels like
2°F
Dew Point
15°F
11 PM
16°F
30%
17mph
WSW
30% Chance of Snow
Humidity
83%
Feels like
0°F
Dew Point
12°F

Snow and Ice Forecast Through Monday

Heavy Snow and Icing from Midwest to New England

A winter storm will deliver snow and significant icing from the Midwest to New England.

Monday's Weather Outlook

Monday's Weather Outlook

Satellite image of Hurricane Melissa

2025 Year in Review: Powerful Hurricanes in the Atlantic

A frame from an automated video of a tornado and its mesocyclone that derailed multiple train cars near Enderlin, North Dakota and destroyed multiple homes on June 20, 2025. (ChrisWx via Wikimedia Commons)

2025 Year in Review: Extreme Weather - January through June

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Hurricane Erick at its peak intensity before making landfall on Guerrero, Mexico on June 19, 2025 (NOAA/Wikimedia Commons)

2025 Year in Review: Active Tropical Season for The Pacific

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide