Hourly Weather Forecast - Williamsburg, Ontario, CA

12 AM
19°F
20%
14mph
WNW
Mostly Cloudy
Humidity
60%
Feels like
5°F
Dew Point
7°F
1 AM
18°F
10%
13mph
W
Mostly Cloudy
Humidity
60%
Feels like
5°F
Dew Point
7°F
2 AM
18°F
10%
12mph
W
Partly Cloudy
Humidity
59%
Feels like
6°F
Dew Point
6°F
3 AM
18°F
0%
10mph
W
Partly Cloudy
Humidity
60%
Feels like
6°F
Dew Point
6°F
4 AM
18°F
0%
9mph
W
Mostly Clear
Humidity
61%
Feels like
7°F
Dew Point
7°F
5 AM
17°F
0%
8mph
W
Mostly Clear
Humidity
62%
Feels like
7°F
Dew Point
7°F
6 AM
17°F
0%
7mph
W
Clear
Humidity
65%
Feels like
7°F
Dew Point
7°F
7 AM
16°F
0%
6mph
W
Clear
Humidity
66%
Feels like
8°F
Dew Point
7°F
7:35 AM
8 AM
17°F
0%
6mph
W
Sunny
Humidity
65%
Feels like
9°F
Dew Point
7°F
9 AM
18°F
0%
6mph
WSW
Sunny
Humidity
62%
Feels like
10°F
Dew Point
7°F
10 AM
20°F
0%
6mph
SW
Sunny
Humidity
59%
Feels like
12°F
Dew Point
8°F
11 AM
21°F
10%
6mph
SW
Partly Cloudy
Humidity
57%
Feels like
13°F
Dew Point
8°F
12 PM
22°F
30%
6mph
SSW
30% Chance of Heavy Snow
Humidity
56%
Feels like
15°F
Dew Point
9°F
1 PM
23°F
10%
7mph
SSW
Cloudy
Humidity
56%
Feels like
15°F
Dew Point
10°F
2 PM
24°F
10%
7mph
S
Cloudy
Humidity
57%
Feels like
16°F
Dew Point
11°F
3 PM
25°F
10%
7mph
SSE
Cloudy
Humidity
59%
Feels like
17°F
Dew Point
13°F
4 PM
25°F
20%
7mph
SSE
Cloudy
Humidity
61%
Feels like
17°F
Dew Point
14°F
4:21 PM
5 PM
25°F
40%
7mph
SSE
40% Chance of Flurries
Humidity
63%
Feels like
17°F
Dew Point
15°F
6 PM
26°F
50%
7mph
SSE
50% Chance of Flurries
Humidity
66%
Feels like
18°F
Dew Point
16°F
7 PM
26°F
50%
7mph
SSE
50% Chance of Flurries
Humidity
68%
Feels like
18°F
Dew Point
17°F
8 PM
26°F
50%
8mph
S
50% Chance of Flurries
Humidity
69%
Feels like
18°F
Dew Point
18°F
9 PM
27°F
50%
9mph
S
50% Chance of Flurries
Humidity
72%
Feels like
18°F
Dew Point
19°F
10 PM
27°F
50%
10mph
SSW
50% Chance of Flurries
Humidity
74%
Feels like
18°F
Dew Point
20°F
11 PM
28°F
40%
11mph
SSW
40% Chance of Snow
Humidity
77%
Feels like
18°F
Dew Point
21°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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