Sumas Mountain Weather Forecast

    • 49
    • 64

    Sunny

    • 42
    • 61

    Rain Showers

    • 37
    • 47

    Chance Rain Showers

    • 39
    • 53

    Partly Sunny

    • 43
    • 59

    Chance Rain Showers

    • 45
    • 61

    Slight Chance Rain Showers

Today 1 May Foothills and Valleys of the North Cascades

Sunny. Highs in the 70s. Light wind.

Tonight 1 May Foothills and Valleys of the North Cascades

Clear. Lows near 50. Light wind.

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Sumas Mountain Temperature Statistics

May Temperature

Bellingham, Bellingham International Airport (16.2 miles)

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  • Average May

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Climate (2020–Present)

Bellingham, Bellingham International Airport (16.2 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    58.9 °F
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