Hourly Weather Forecast - Sarnia, Ontario, CA

12 AM
33°F
0%
17mph
W
Mostly Clear
Humidity
55%
Feels like
22°F
Dew Point
19°F
1 AM
30°F
0%
17mph
W
Partly Cloudy
Humidity
54%
Feels like
18°F
Dew Point
16°F
2 AM
28°F
0%
17mph
WNW
Partly Cloudy
Humidity
54%
Feels like
15°F
Dew Point
13°F
3 AM
26°F
0%
16mph
WNW
Mostly Cloudy
Humidity
53%
Feels like
13°F
Dew Point
11°F
4 AM
24°F
0%
15mph
WNW
Mostly Cloudy
Humidity
52%
Feels like
12°F
Dew Point
10°F
5 AM
23°F
0%
15mph
WNW
Mostly Cloudy
Humidity
52%
Feels like
10°F
Dew Point
8°F
6 AM
22°F
0%
14mph
WNW
Partly Cloudy
Humidity
53%
Feels like
9°F
Dew Point
7°F
7 AM
21°F
0%
14mph
WNW
Partly Cloudy
Humidity
54%
Feels like
8°F
Dew Point
7°F
7:57 AM
8 AM
21°F
0%
14mph
WNW
Partly Cloudy
Humidity
55%
Feels like
8°F
Dew Point
7°F
9 AM
21°F
0%
14mph
WNW
Partly Cloudy
Humidity
55%
Feels like
9°F
Dew Point
8°F
10 AM
22°F
0%
14mph
WNW
Partly Cloudy
Humidity
54%
Feels like
9°F
Dew Point
8°F
11 AM
23°F
0%
13mph
WNW
Partly Cloudy
Humidity
53%
Feels like
10°F
Dew Point
8°F
12 PM
23°F
0%
12mph
WNW
Partly Cloudy
Humidity
51%
Feels like
12°F
Dew Point
8°F
1 PM
24°F
0%
11mph
WNW
Partly Cloudy
Humidity
50%
Feels like
14°F
Dew Point
8°F
2 PM
25°F
0%
11mph
WNW
Partly Cloudy
Humidity
49%
Feels like
15°F
Dew Point
9°F
3 PM
25°F
0%
9mph
WNW
Partly Cloudy
Humidity
50%
Feels like
16°F
Dew Point
9°F
4 PM
25°F
0%
8mph
WNW
Sunny
Humidity
51%
Feels like
16°F
Dew Point
10°F
4:57 PM
5 PM
24°F
0%
7mph
W
Clear
Humidity
54%
Feels like
16°F
Dew Point
10°F
6 PM
23°F
0%
6mph
W
Clear
Humidity
56%
Feels like
15°F
Dew Point
10°F
7 PM
22°F
0%
5mph
W
Clear
Humidity
58%
Feels like
15°F
Dew Point
10°F
8 PM
22°F
0%
5mph
WSW
Clear
Humidity
59%
Feels like
16°F
Dew Point
10°F
9 PM
22°F
0%
5mph
WSW
Clear
Humidity
59%
Feels like
16°F
Dew Point
10°F
10 PM
22°F
0%
5mph
SW
Clear
Humidity
60%
Feels like
16°F
Dew Point
11°F
11 PM
22°F
0%
6mph
SW
Clear
Humidity
61%
Feels like
15°F
Dew Point
11°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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