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December 30th, 2025 :: 12:45 pm PST   

Local Weather Report for
Sumas
Washington, United States

 Current Sumas Weather Conditions Updated December 30th at 12:00 pm 
Mostly Cloudy
Temperature:39°F Dew Point:34°F
Barometer:30.27 inHg Wind:N 6 Mph
Humidity:80.8% Visibility:0M
 
 Sumas Weather Forecast Summary  
 
Today
Dec 30th
Wednesday
Dec 31st
Thursday
Jan 1st
Friday
Jan 2nd
Saturday
Jan 3rd
Cloudy Cloudy Cloudy Cloudy Mix of rain and snow
44°F
44°F
33°F
43°F
33°F
43°F
38°F
42°F
37°F
 
 Sumas Detailed Weather Forecast  
 
Tuesday, December 30th, 2025
Afternoon Temperature: 36°F
Mostly sunny.
Evening Temperature: 34°F
Clear.
Wednesday, December 31st, 2025
Overnight Temperature: 34°F
Cloudy.
Morning Temperature: 42°F
Cloudy.
Afternoon Temperature: 37°F
Sunny with cloudy periods.
Evening Temperature: 34°F
A mix of cloudy and clear skies.
Thursday, January 1st, 2026
Overnight Temperature: 33°F
Clear with cloudy periods.
Morning Temperature: 41°F
Cloudy.
Afternoon Temperature: 37°F
Cloudy.
Evening Temperature: 37°F
Cloudy.
Friday, January 2nd, 2026
Overnight Temperature: 39°F
Mostly cloudy.
Morning Temperature: 43°F
Cloudy.
Afternoon Temperature: 43°F
Cloudy with a chance of showers.
Evening Temperature: 41°F
Cloudy with a chance of showers.
Saturday, January 3rd, 2026
Overnight Temperature: 38°F
Cloudy with showers likely. Showers possibly mixed with wet flurries.
Morning Temperature: 40°F
Cloudy with a few showers. Showers possibly mixed with wet flurries.
Afternoon Temperature: 38°F
Cloudy with showers likely. Showers possibly mixed with wet flurries.
Evening Temperature: 37°F
Cloudy with showers likely. Showers possibly mixed with wet flurries.
Sunday, January 4th, 2026
Overnight Temperature: 37°F
Cloudy with a few showers. Showers possibly mixed with wet flurries.
Morning Temperature: 36°F
Cloudy with showers. Showers possibly mixed with wet flurries.
Afternoon Temperature: 34°F
Cloudy with flurries or showers. Risk of freezing rain.
Evening Temperature: 33°F
Cloudy with a few flurries or showers.
Monday, January 5th, 2026
Overnight Temperature: 33°F
Cloudy with flurries or showers likely.
Morning Temperature: 36°F
Cloudy with a chance of showers. Showers possibly mixed with wet flurries.
Afternoon Temperature: 32°F
Cloudy.
Evening Temperature: 29°F
A mix of cloudy and clear skies.
Tuesday, January 6th, 2026
Overnight Temperature: 29°F
A mix of cloudy and clear skies.
Morning Temperature: 37°F
A mix of cloud and sun.
Afternoon Temperature: 33°F
A mix of cloud and sun.
Evening Temperature: 35°F
Cloudy.
Wednesday, January 7th, 2026
Overnight Temperature: 35°F
Cloudy with flurries or showers likely. Risk of freezing rain.
Morning Temperature: 36°F
Cloudy with showers likely. Showers possibly mixed with wet flurries.
Afternoon Temperature: 35°F
Cloudy with a few flurries or showers. Risk of freezing rain.
Evening Temperature: 32°F
A mix of cloudy and clear skies with a chance of flurries or showers.





 

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This WeatherCity Weather Forecast for Sumas, Washington, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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