Hourly Weather Forecast - Sumas, WA

1 AM
37°F
70%
10mph
SSW
70% Chance of Light Rain
Humidity
92%
Feels like
30°F
Dew Point
35°F
2 AM
37°F
70%
10mph
SSW
70% Chance of Rain
Humidity
93%
Feels like
30°F
Dew Point
35°F
3 AM
37°F
70%
10mph
SSW
70% Chance of Light Rain
Humidity
94%
Feels like
31°F
Dew Point
36°F
4 AM
38°F
60%
10mph
SSW
60% Chance of Light Rain
Humidity
95%
Feels like
31°F
Dew Point
36°F
5 AM
38°F
50%
10mph
SSW
50% Chance of Light Rain
Humidity
93%
Feels like
31°F
Dew Point
36°F
6 AM
38°F
40%
10mph
S
40% Chance of Light Rain
Humidity
92%
Feels like
31°F
Dew Point
36°F
7 AM
38°F
50%
10mph
S
50% Chance of Light Rain
Humidity
90%
Feels like
31°F
Dew Point
35°F
7:59 AM
8 AM
38°F
50%
11mph
S
50% Chance of Light Rain
Humidity
87%
Feels like
32°F
Dew Point
35°F
9 AM
39°F
50%
11mph
S
50% Chance Frozen Mix
Humidity
88%
Feels like
32°F
Dew Point
36°F
10 AM
40°F
50%
12mph
S
50% Chance of Light Rain
Humidity
87%
Feels like
32°F
Dew Point
36°F
11 AM
41°F
60%
12mph
S
60% Chance of Light Rain
Humidity
87%
Feels like
34°F
Dew Point
37°F
12 PM
42°F
50%
12mph
S
50% Chance of Light Rain
Humidity
87%
Feels like
35°F
Dew Point
38°F
1 PM
42°F
60%
11mph
S
60% Chance of Light Rain
Humidity
88%
Feels like
36°F
Dew Point
39°F
2 PM
42°F
70%
11mph
SSW
70% Chance Rain Showers
Humidity
88%
Feels like
36°F
Dew Point
39°F
3 PM
42°F
60%
10mph
SSW
60% Chance of Light Rain
Humidity
89%
Feels like
37°F
Dew Point
39°F
4 PM
42°F
70%
10mph
SSW
70% Chance of Light Rain
Humidity
91%
Feels like
37°F
Dew Point
40°F
4:13 PM
5 PM
42°F
60%
9mph
SSW
60% Chance of Light Rain
Humidity
92%
Feels like
36°F
Dew Point
39°F
6 PM
41°F
50%
9mph
SSW
50% Chance of Light Rain
Humidity
91%
Feels like
35°F
Dew Point
39°F
7 PM
40°F
50%
9mph
S
50% Chance of Light Rain
Humidity
92%
Feels like
35°F
Dew Point
38°F
8 PM
40°F
50%
8mph
S
50% Chance of Light Rain
Humidity
95%
Feels like
34°F
Dew Point
39°F
9 PM
40°F
50%
7mph
S
50% Chance of Light Rain
Humidity
99%
Feels like
35°F
Dew Point
40°F
10 PM
40°F
60%
6mph
S
60% Chance of Light Rain
Humidity
98%
Feels like
35°F
Dew Point
40°F
11 PM
40°F
60%
6mph
S
60% Chance of Light Rain
Humidity
100%
Feels like
36°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

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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide