Hourly Weather Forecast - Sarnia, Ontario, CA

12 AM
30°F
10%
13mph
W
Mostly Clear
Humidity
70%
Feels like
19°F
Dew Point
21°F
1 AM
28°F
0%
14mph
W
Mostly Clear
Humidity
68%
Feels like
17°F
Dew Point
19°F
2 AM
27°F
0%
15mph
W
Partly Cloudy
Humidity
67%
Feels like
15°F
Dew Point
17°F
3 AM
26°F
0%
15mph
W
Partly Cloudy
Humidity
66%
Feels like
13°F
Dew Point
16°F
4 AM
24°F
0%
16mph
W
Mostly Cloudy
Humidity
67%
Feels like
11°F
Dew Point
15°F
5 AM
22°F
0%
17mph
W
Mostly Cloudy
Humidity
68%
Feels like
8°F
Dew Point
13°F
6 AM
20°F
0%
17mph
W
Mostly Cloudy
Humidity
68%
Feels like
6°F
Dew Point
11°F
7 AM
19°F
0%
17mph
WNW
Mostly Cloudy
Humidity
66%
Feels like
5°F
Dew Point
10°F
7:57 AM
8 AM
19°F
0%
17mph
WNW
Partly Cloudy
Humidity
64%
Feels like
4°F
Dew Point
9°F
9 AM
20°F
0%
17mph
WNW
Partly Cloudy
Humidity
62%
Feels like
5°F
Dew Point
9°F
10 AM
21°F
0%
16mph
WNW
Mostly Sunny
Humidity
60%
Feels like
6°F
Dew Point
9°F
11 AM
21°F
10%
16mph
WNW
Mostly Sunny
Humidity
56%
Feels like
8°F
Dew Point
8°F
12 PM
22°F
10%
16mph
WNW
Sunny
Humidity
52%
Feels like
9°F
Dew Point
7°F
1 PM
23°F
10%
15mph
WNW
Sunny
Humidity
50%
Feels like
10°F
Dew Point
7°F
2 PM
23°F
0%
15mph
WNW
Sunny
Humidity
50%
Feels like
10°F
Dew Point
7°F
3 PM
23°F
0%
14mph
WNW
Sunny
Humidity
52%
Feels like
10°F
Dew Point
8°F
4 PM
22°F
0%
13mph
WNW
Sunny
Humidity
54%
Feels like
10°F
Dew Point
8°F
4:57 PM
5 PM
22°F
0%
12mph
WNW
Clear
Humidity
57%
Feels like
11°F
Dew Point
9°F
6 PM
22°F
0%
11mph
WNW
Clear
Humidity
58%
Feels like
11°F
Dew Point
10°F
7 PM
22°F
0%
10mph
WNW
Clear
Humidity
58%
Feels like
12°F
Dew Point
10°F
8 PM
22°F
0%
10mph
WNW
Mostly Clear
Humidity
60%
Feels like
12°F
Dew Point
11°F
9 PM
22°F
0%
9mph
WNW
Partly Cloudy
Humidity
63%
Feels like
12°F
Dew Point
11°F
10 PM
22°F
0%
9mph
W
Mostly Cloudy
Humidity
65%
Feels like
12°F
Dew Point
12°F
11 PM
21°F
0%
8mph
W
Partly Cloudy
Humidity
66%
Feels like
12°F
Dew Point
12°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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