Hourly Weather Forecast - Sarnia, Ontario, CA

2 PM
40°F
0%
9mph
WNW
Mostly Cloudy
Humidity
69%
Feels like
34°F
Dew Point
30°F
3 PM
39°F
0%
7mph
WNW
Partly Cloudy
Humidity
69%
Feels like
34°F
Dew Point
30°F
4 PM
38°F
0%
5mph
W
Partly Cloudy
Humidity
70%
Feels like
34°F
Dew Point
29°F
4:56 PM
5 PM
36°F
0%
4mph
W
Partly Cloudy
Humidity
72%
Feels like
33°F
Dew Point
28°F
6 PM
34°F
0%
4mph
SW
Mostly Clear
Humidity
74%
Feels like
31°F
Dew Point
27°F
7 PM
33°F
0%
4mph
S
Partly Cloudy
Humidity
74%
Feels like
28°F
Dew Point
25°F
8 PM
31°F
0%
6mph
S
Partly Cloudy
Humidity
75%
Feels like
26°F
Dew Point
24°F
9 PM
31°F
0%
7mph
S
Mostly Clear
Humidity
78%
Feels like
24°F
Dew Point
25°F
10 PM
31°F
0%
9mph
S
Partly Cloudy
Humidity
80%
Feels like
23°F
Dew Point
25°F
11 PM
31°F
0%
10mph
S
Partly Cloudy
Humidity
81%
Feels like
22°F
Dew Point
26°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

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

Wednesday's Weather Outlook

Today'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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