Hourly Weather Forecast - Sumas, WA

4 AM
42°F
60%
10mph
S
60% Chance of Light Rain
Humidity
80%
Feels like
36°F
Dew Point
36°F
5 AM
42°F
70%
10mph
S
70% Chance Frozen Mix
Humidity
80%
Feels like
36°F
Dew Point
36°F
6 AM
42°F
50%
10mph
S
50% Chance Frozen Mix
Humidity
80%
Feels like
36°F
Dew Point
36°F
7 AM
42°F
60%
9mph
S
60% Chance of Light Rain
Humidity
79%
Feels like
36°F
Dew Point
36°F
7:59 AM
8 AM
42°F
50%
10mph
S
50% Chance of Light Rain
Humidity
80%
Feels like
36°F
Dew Point
36°F
9 AM
42°F
50%
11mph
S
50% Chance of Light Rain
Humidity
80%
Feels like
35°F
Dew Point
36°F
10 AM
42°F
60%
12mph
S
60% Chance of Light Rain
Humidity
81%
Feels like
36°F
Dew Point
37°F
11 AM
43°F
50%
12mph
S
50% Chance of Light Rain
Humidity
81%
Feels like
36°F
Dew Point
37°F
12 PM
43°F
60%
12mph
S
60% Chance of Light Rain
Humidity
81%
Feels like
37°F
Dew Point
38°F
1 PM
43°F
70%
11mph
S
70% Chance of Light Rain
Humidity
82%
Feels like
37°F
Dew Point
38°F
2 PM
43°F
70%
11mph
S
70% Chance Rain Showers
Humidity
86%
Feels like
37°F
Dew Point
39°F
3 PM
42°F
60%
11mph
S
60% Chance of Light Rain
Humidity
90%
Feels like
36°F
Dew Point
39°F
4 PM
41°F
70%
10mph
S
70% Chance Frozen Mix
Humidity
93%
Feels like
35°F
Dew Point
39°F
4:13 PM
5 PM
41°F
60%
9mph
S
60% Chance of Light Rain
Humidity
93%
Feels like
35°F
Dew Point
39°F
6 PM
41°F
50%
9mph
S
50% Chance of Light Rain
Humidity
94%
Feels like
35°F
Dew Point
39°F
7 PM
40°F
50%
9mph
S
50% Chance of Light Rain
Humidity
95%
Feels like
35°F
Dew Point
39°F
8 PM
40°F
50%
8mph
S
50% Chance of Light Rain
Humidity
95%
Feels like
35°F
Dew Point
39°F
9 PM
40°F
50%
7mph
S
50% Chance of Light Rain
Humidity
97%
Feels like
35°F
Dew Point
39°F
10 PM
40°F
60%
6mph
S
60% Chance of Light Rain
Humidity
97%
Feels like
36°F
Dew Point
39°F
11 PM
40°F
60%
5mph
S
60% Chance of Light Rain
Humidity
98%
Feels like
36°F
Dew Point
39°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

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Weekend Weather Outlook

Weekend 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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