Hourly Weather Forecast - Cornwall, Ontario, CA

12 AM
26°F
20%
8mph
NE
Cloudy
Humidity
77%
Feels like
18°F
Dew Point
20°F
1 AM
26°F
20%
8mph
NE
Cloudy
Humidity
76%
Feels like
17°F
Dew Point
19°F
2 AM
25°F
20%
8mph
NNE
Cloudy
Humidity
74%
Feels like
17°F
Dew Point
18°F
3 AM
25°F
20%
9mph
NNE
Cloudy
Humidity
74%
Feels like
16°F
Dew Point
18°F
4 AM
24°F
20%
9mph
NNE
Cloudy
Humidity
75%
Feels like
15°F
Dew Point
17°F
5 AM
23°F
20%
8mph
NNE
Cloudy
Humidity
77%
Feels like
13°F
Dew Point
17°F
6 AM
22°F
20%
8mph
NNE
Partly Cloudy
Humidity
77%
Feels like
13°F
Dew Point
16°F
6:56 AM
7 AM
23°F
20%
8mph
NNE
Mostly Sunny
Humidity
73%
Feels like
14°F
Dew Point
16°F
8 AM
25°F
10%
8mph
NNE
Sunny
Humidity
66%
Feels like
16°F
Dew Point
15°F
9 AM
27°F
10%
8mph
NNE
Sunny
Humidity
60%
Feels like
19°F
Dew Point
15°F
10 AM
29°F
10%
9mph
NNE
Sunny
Humidity
57%
Feels like
20°F
Dew Point
15°F
11 AM
29°F
10%
9mph
NNE
Sunny
Humidity
55%
Feels like
21°F
Dew Point
15°F
12 PM
30°F
10%
9mph
NNE
Sunny
Humidity
53%
Feels like
22°F
Dew Point
15°F
1 PM
31°F
10%
9mph
N
Sunny
Humidity
52%
Feels like
23°F
Dew Point
15°F
2 PM
31°F
10%
9mph
N
Sunny
Humidity
50%
Feels like
24°F
Dew Point
15°F
3 PM
32°F
10%
8mph
N
Sunny
Humidity
50%
Feels like
25°F
Dew Point
15°F
4 PM
32°F
10%
6mph
NNW
Mostly Sunny
Humidity
50%
Feels like
26°F
Dew Point
16°F
5 PM
32°F
10%
6mph
NNW
Partly Cloudy
Humidity
52%
Feels like
26°F
Dew Point
16°F
6 PM
30°F
10%
5mph
NW
Partly Cloudy
Humidity
57%
Feels like
25°F
Dew Point
17°F
7 PM
29°F
10%
4mph
NW
Partly Cloudy
Humidity
62%
Feels like
24°F
Dew Point
17°F
7:15 PM
8 PM
27°F
20%
4mph
NW
Partly Cloudy
Humidity
66%
Feels like
23°F
Dew Point
17°F
9 PM
26°F
20%
3mph
NW
Partly Cloudy
Humidity
67%
Feels like
22°F
Dew Point
17°F
10 PM
26°F
10%
3mph
NW
Mostly Cloudy
Humidity
66%
Feels like
22°F
Dew Point
16°F
11 PM
26°F
10%
3mph
NNW
Cloudy
Humidity
65%
Feels like
22°F
Dew Point
16°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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