Hourly Weather Forecast - Sumas, WA

6 PM
42°F
60%
8mph
S
60% Chance of Light Rain
Humidity
88%
Feels like
37°F
Dew Point
39°F
7 PM
41°F
70%
7mph
S
70% Chance of Sleet
Humidity
89%
Feels like
36°F
Dew Point
38°F
8 PM
41°F
70%
7mph
S
70% Chance of Light Rain
Humidity
89%
Feels like
36°F
Dew Point
38°F
9 PM
41°F
60%
6mph
S
60% Chance of Light Rain
Humidity
94%
Feels like
36°F
Dew Point
39°F
10 PM
41°F
60%
6mph
S
60% Chance of Light Rain
Humidity
94%
Feels like
37°F
Dew Point
39°F
11 PM
41°F
60%
5mph
S
60% Chance of Light Rain
Humidity
96%
Feels like
37°F
Dew Point
40°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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