Hourly Weather Forecast - Cornwall, Ontario, CA

1 PM
27°F
90%
9mph
ENE
Heavy Snow
Humidity
90%
Feels like
18°F
Dew Point
24°F
2 PM
27°F
80%
9mph
ENE
80% Chance of Heavy Snow
Humidity
92%
Feels like
18°F
Dew Point
25°F
3 PM
28°F
70%
10mph
ENE
70% Chance of Heavy Snow
Humidity
92%
Feels like
18°F
Dew Point
25°F
4 PM
28°F
40%
10mph
NE
40% Chance of Heavy Snow
Humidity
91%
Feels like
19°F
Dew Point
26°F
5 PM
28°F
20%
9mph
NE
Mostly Cloudy
Humidity
91%
Feels like
19°F
Dew Point
26°F
6 PM
28°F
10%
9mph
NE
Mostly Cloudy
Humidity
91%
Feels like
20°F
Dew Point
26°F
7 PM
28°F
10%
7mph
NE
Mostly Cloudy
Humidity
90%
Feels like
20°F
Dew Point
26°F
7:11 PM
8 PM
28°F
0%
6mph
NE
Mostly Cloudy
Humidity
91%
Feels like
21°F
Dew Point
25°F
9 PM
27°F
0%
5mph
NNE
Mostly Cloudy
Humidity
91%
Feels like
22°F
Dew Point
25°F
10 PM
27°F
0%
4mph
NNE
Mostly Cloudy
Humidity
90%
Feels like
22°F
Dew Point
24°F
11 PM
27°F
0%
4mph
N
Mostly Cloudy
Humidity
90%
Feels like
23°F
Dew Point
24°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

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