Hourly Weather Forecast - Thornhill, Ontario, CA

12 AM
11°F
10%
1mph
NNW
Mostly Cloudy
Humidity
72%
Feels like
11°F
Dew Point
3°F
1 AM
10°F
10%
1mph
NNW
Mostly Cloudy
Humidity
73%
Feels like
10°F
Dew Point
3°F
2 AM
10°F
10%
0mph
NNW
Mostly Cloudy
Humidity
72%
Feels like
10°F
Dew Point
3°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

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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)

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