Hourly Weather Forecast - Cornwall, Ontario, CA

12 AM
14°F
20%
11mph
WNW
Partly Cloudy
Humidity
67%
Feels like
1°F
Dew Point
5°F
1 AM
14°F
10%
10mph
WNW
Partly Cloudy
Humidity
67%
Feels like
1°F
Dew Point
5°F
2 AM
13°F
10%
10mph
WNW
Partly Cloudy
Humidity
66%
Feels like
1°F
Dew Point
4°F
3 AM
13°F
10%
10mph
WNW
Partly Cloudy
Humidity
65%
Feels like
0°F
Dew Point
3°F
4 AM
12°F
10%
9mph
WNW
Partly Cloudy
Humidity
66%
Feels like
-1°F
Dew Point
3°F
5 AM
11°F
10%
9mph
WNW
Partly Cloudy
Humidity
67%
Feels like
-1°F
Dew Point
2°F
6 AM
11°F
0%
8mph
WNW
Partly Cloudy
Humidity
68%
Feels like
0°F
Dew Point
3°F
7 AM
12°F
0%
8mph
W
Partly Cloudy
Humidity
67%
Feels like
1°F
Dew Point
3°F
7:34 AM
8 AM
13°F
10%
8mph
W
Partly Cloudy
Humidity
64%
Feels like
2°F
Dew Point
3°F
9 AM
14°F
10%
8mph
W
Mostly Cloudy
Humidity
61%
Feels like
4°F
Dew Point
3°F
10 AM
15°F
10%
8mph
W
Mostly Cloudy
Humidity
58%
Feels like
5°F
Dew Point
3°F
11 AM
17°F
10%
8mph
W
Mostly Cloudy
Humidity
55%
Feels like
6°F
Dew Point
3°F
12 PM
17°F
10%
8mph
W
Mostly Cloudy
Humidity
53%
Feels like
7°F
Dew Point
3°F
1 PM
18°F
10%
8mph
W
Mostly Cloudy
Humidity
51%
Feels like
8°F
Dew Point
3°F
2 PM
19°F
10%
8mph
W
Mostly Cloudy
Humidity
49%
Feels like
9°F
Dew Point
4°F
3 PM
20°F
10%
7mph
W
Mostly Cloudy
Humidity
48%
Feels like
11°F
Dew Point
4°F
4 PM
21°F
10%
6mph
W
Partly Cloudy
Humidity
48%
Feels like
13°F
Dew Point
4°F
4:20 PM
5 PM
22°F
10%
5mph
W
Partly Cloudy
Humidity
48%
Feels like
15°F
Dew Point
5°F
6 PM
20°F
10%
4mph
WSW
Mostly Cloudy
Humidity
52%
Feels like
14°F
Dew Point
5°F
7 PM
19°F
10%
3mph
WSW
Mostly Cloudy
Humidity
56%
Feels like
14°F
Dew Point
6°F
8 PM
18°F
10%
3mph
SW
Mostly Cloudy
Humidity
60%
Feels like
18°F
Dew Point
7°F
9 PM
20°F
20%
2mph
SW
Mostly Cloudy
Humidity
57%
Feels like
20°F
Dew Point
7°F
10 PM
22°F
20%
2mph
SSW
Cloudy
Humidity
55%
Feels like
22°F
Dew Point
8°F
11 PM
23°F
30%
3mph
SSW
30% Chance of Flurries
Humidity
54%
Feels like
23°F
Dew Point
9°F

Forecast Peak Wind Gusts Today

High Winds, Rain, and Snow Cross the Country

A clipper moving over the Great Lakes brings rain, snow, and high winds through the Atlantic Coastline.

Rainfall and Snowfall Totals Through Friday

Atmospheric River Symptoms Repeat in the Northwest

Thursday's Weather Outlook

Today's Weather Outlook

Flu Update Valid For Week Ending December 6, 2025

Weekly Flu Update: Flu Exceeds Annual Baseline

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

How to Measure Snow via NWS

How To Measure Snow

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