7-Day Forecast 49°N 122.27°W (Text-Only)
NWS Forecast for: Sumas WA
Issued by: National Weather Service Seattle, WA
Last Update: 2:25 pm PDT Jul 13, 2025


This Afternoon: Sunny, with a high near 85. Southwest wind 10 to 13 mph.

Tonight: Partly cloudy, with a low around 63. Southwest wind 9 to 11 mph.

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 78. South southwest wind around 9 mph.

Monday Night: Mostly clear, with a low around 59. West wind around 6 mph becoming calm.

Tuesday: Sunny, with a high near 91. Northeast wind 6 to 10 mph becoming north northwest in the afternoon.

Tuesday Night: Clear, with a low around 61.

Wednesday: Sunny, with a high near 89.

Wednesday Night: Mostly clear, with a low around 61.

Thursday: Sunny, with a high near 87.

Thursday Night: Mostly clear, with a low around 61.

Friday: Sunny, with a high near 83.

Friday Night: Partly cloudy, with a low around 59.

Saturday: Mostly sunny, with a high near 76.



Sumas WA
 49°N 122.27°W (Elev. 49 ft)

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