Lummi Island Weather Forecast

    • 55
    • 69

    Mostly Sunny

    • 55
    • 71

    Mostly Sunny

    • 57
    • 72

    Mostly Cloudy

    • 56
    • 68

    Chance Thunderstorms

    • 54
    • 64

    Partly Sunny

    • 55
    • 66

    Partly Sunny

    • 54
    • 65

    Partly Sunny

Today 19 Aug Lowlands of Western Whatcom County

Partly sunny until late afternoon then becoming sunny. Highs in the 70s. South wind to 10 Mph becoming west around 10 Mph in the afternoon.

Tonight 19 Aug Lowlands of Western Whatcom County

Partly cloudy. Lows in the mid to upper 50s. Light wind.

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Lummi Island Temperature Statistics

August Temperature

Bellingham, Bellingham International Airport (8.1 miles)

  • Lowest 3 August, 2026

    46.7 °F

  • Average August

    64.2 °F

  • Highest 7 August, 2026

    81.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (8.1 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.1 °F
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