Hourly Weather Forecast - Casselman, Ontario, CA

12 AM
17°F
30%
4mph
WSW
30% Chance of Flurries
Humidity
65%
Feels like
11°F
Dew Point
7°F
1 AM
16°F
30%
3mph
WSW
30% Chance of Flurries
Humidity
67%
Feels like
11°F
Dew Point
7°F
2 AM
15°F
20%
3mph
SW
Cloudy
Humidity
72%
Feels like
15°F
Dew Point
8°F
3 AM
15°F
20%
2mph
SSW
Cloudy
Humidity
76%
Feels like
15°F
Dew Point
9°F
4 AM
15°F
30%
2mph
SSE
30% Chance of Flurries
Humidity
76%
Feels like
15°F
Dew Point
9°F
5 AM
15°F
40%
2mph
SSE
40% Chance of Flurries
Humidity
80%
Feels like
15°F
Dew Point
10°F
6 AM
15°F
50%
3mph
SE
50% Chance of Snow
Humidity
82%
Feels like
15°F
Dew Point
11°F
7 AM
16°F
50%
4mph
SE
50% Chance of Snow
Humidity
82%
Feels like
10°F
Dew Point
11°F
7:37 AM
8 AM
17°F
50%
4mph
SE
50% Chance of Heavy Snow
Humidity
83%
Feels like
10°F
Dew Point
12°F
9 AM
17°F
50%
5mph
SE
50% Chance of Heavy Snow
Humidity
84%
Feels like
10°F
Dew Point
13°F
10 AM
18°F
60%
6mph
SE
60% Chance of Heavy Snow
Humidity
83%
Feels like
10°F
Dew Point
13°F
11 AM
18°F
60%
6mph
SE
60% Chance of Heavy Snow
Humidity
83%
Feels like
10°F
Dew Point
14°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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