Hourly Weather Forecast - Cornwall, Ontario, CA

12 AM
25°F
20%
3mph
NNW
Cloudy
Humidity
66%
Feels like
21°F
Dew Point
15°F
1 AM
24°F
20%
4mph
NNW
Cloudy
Humidity
67%
Feels like
20°F
Dew Point
15°F
2 AM
23°F
20%
4mph
NNW
Cloudy
Humidity
69%
Feels like
18°F
Dew Point
15°F
3 AM
22°F
20%
4mph
NW
Cloudy
Humidity
73%
Feels like
17°F
Dew Point
15°F
4 AM
20°F
20%
3mph
NW
Cloudy
Humidity
78%
Feels like
15°F
Dew Point
14°F
5 AM
18°F
20%
3mph
WNW
Cloudy
Humidity
84%
Feels like
14°F
Dew Point
14°F
6 AM
17°F
10%
3mph
WNW
Mostly Cloudy
Humidity
86%
Feels like
17°F
Dew Point
14°F
6:55 AM
7 AM
18°F
0%
3mph
W
Mostly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
13°F
8 AM
20°F
0%
3mph
WSW
Partly Cloudy
Humidity
74%
Feels like
16°F
Dew Point
13°F
9 AM
24°F
0%
4mph
WSW
Partly Cloudy
Humidity
64%
Feels like
19°F
Dew Point
13°F
10 AM
26°F
0%
4mph
WSW
Mostly Sunny
Humidity
57%
Feels like
21°F
Dew Point
13°F
11 AM
29°F
0%
5mph
WSW
Sunny
Humidity
51%
Feels like
23°F
Dew Point
13°F
12 PM
31°F
0%
6mph
WSW
Sunny
Humidity
47%
Feels like
25°F
Dew Point
13°F
1 PM
33°F
0%
7mph
SW
Mostly Sunny
Humidity
44%
Feels like
26°F
Dew Point
13°F
2 PM
34°F
0%
8mph
SW
Mostly Sunny
Humidity
43%
Feels like
27°F
Dew Point
13°F
3 PM
34°F
0%
8mph
SW
Partly Cloudy
Humidity
44%
Feels like
28°F
Dew Point
15°F
4 PM
35°F
0%
8mph
SW
Mostly Cloudy
Humidity
46%
Feels like
28°F
Dew Point
16°F
5 PM
34°F
0%
8mph
SW
Cloudy
Humidity
50%
Feels like
27°F
Dew Point
17°F
6 PM
33°F
0%
8mph
SW
Cloudy
Humidity
55%
Feels like
26°F
Dew Point
19°F
7 PM
33°F
10%
7mph
SW
Cloudy
Humidity
57%
Feels like
26°F
Dew Point
19°F
7:16 PM
8 PM
33°F
10%
6mph
SW
Cloudy
Humidity
58%
Feels like
27°F
Dew Point
20°F
9 PM
34°F
20%
7mph
SW
Cloudy
Humidity
57%
Feels like
28°F
Dew Point
20°F
10 PM
33°F
20%
7mph
SW
Mostly Cloudy
Humidity
60%
Feels like
27°F
Dew Point
20°F
11 PM
32°F
30%
7mph
SW
30% Chance of Flurries
Humidity
62%
Feels like
26°F
Dew Point
21°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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