National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Abbotsford International Airport (CYXX)

Lat: 49.03333°NLon: 122.36667°WElev: 177.0ft.

Overcast

64°F

18°C

Humidity 31%
Wind Speed WNW 2 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 34°F (1°C)
Visibility 30.00 mi
Last update 18 Apr 05:00 PM PDT
Extended Forecast for

Sumas WA

  • Tonight

    Tonight: Partly cloudy, with a low around 48. East northeast wind 3 to 6 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 75. Northeast wind around 6 mph.

    High: 75 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. North northeast wind around 6 mph becoming light and variable in the evening.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 76. Light and variable wind becoming west 5 to 7 mph in the afternoon.

    High: 76 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain, mainly after 11am. Partly sunny, with a high near 68.

    High: 68 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 61.

    High: 61 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. East northeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 75. Northeast wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 51. North northeast wind around 6 mph becoming light and variable in the evening.
Monday
Increasing clouds, with a high near 76. Light and variable wind becoming west 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.
Tuesday
A 40 percent chance of rain, mainly after 11am. Partly sunny, with a high near 68.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A chance of rain. Mostly cloudy, with a high near 61.
Wednesday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumas WA
 49°N 122.27°W (Elev. 49 ft)
Last Update:
11:26 am PDT Apr 18, 2026
Forecast Valid:
5pm PDT Apr 18, 2026-6pm PDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation