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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Abbotsford International Airport (CYXX)

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

Mostly Cloudy

66°F

19°C

Humidity 68%
Wind Speed S 6 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 25.00 mi
Last update 28 Aug 11:00 AM PDT
Extended Forecast for

Sumas WA

  • Today

    Today: Partly sunny, with a high near 72. Southwest wind 7 to 10 mph.

    High: 72 °F

    Partly Sunny

  • Tonight

    Tonight: Rain, mainly after 1am. Low around 52. South southwest wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Chance Rain
    then Rain

  • Saturday

    Saturday: Rain, mainly before 3pm. High near 66. South southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Rain

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 51. Southwest wind 5 to 7 mph becoming light and variable after midnight.

    Low: 51 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. Calm wind becoming south southwest around 6 mph.

    High: 67 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of rain after 11pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 72. Southwest wind 7 to 10 mph.
Tonight
Rain, mainly after 1am. Low around 52. South southwest wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain, mainly before 3pm. High near 66. South southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 51. Southwest wind 5 to 7 mph becoming light and variable after midnight.
Sunday
Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. Calm wind becoming south southwest around 6 mph.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Partly sunny, with a high near 72.
Monday Night
A slight chance of rain after 11pm. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Mostly cloudy, with a high near 70.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52.
Wednesday
Rain likely. Mostly cloudy, with a high near 66.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A chance of rain. Mostly cloudy, with a high near 68.
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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 pm PDT Aug 27, 2026
Forecast Valid:
11am PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
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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