Hourly Weather Forecast - Mattawa, Ontario, CA

8 PM
26°F
10%
11mph
SSW
Mostly Cloudy
Humidity
83%
Feels like
15°F
Dew Point
21°F
9 PM
26°F
70%
11mph
SSW
70% Chance Freezing Rain
Humidity
82%
Feels like
16°F
Dew Point
22°F
10 PM
27°F
10%
11mph
SSW
Mostly Cloudy
Humidity
82%
Feels like
17°F
Dew Point
22°F
11 PM
28°F
0%
11mph
SSW
Cloudy
Humidity
83%
Feels like
18°F
Dew Point
23°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Wednesday'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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