Lummi Island - Bumstead Spit Weather Forecast

    • 54
    • 65

    Mostly Sunny

    • 55
    • 68

    Partly Sunny

    • 57
    • 70

    Mostly Sunny

    • 57
    • 70

    Partly Sunny

    • 57
    • 68

    Chance Rain

    • 57
    • 69

    Mostly Sunny

Today 12 Jul Lowlands of Western Whatcom County

Sunny. Highs in the mid 60s to lower 70s. South wind to 10 Mph in the morning becoming light.

Tonight 12 Jul Lowlands of Western Whatcom County

Mostly clear. Lows in the upper 40s to mid 50s. Light wind.

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Lummi Island - Bumstead Spit Temperature Statistics

July Temperature

Bellingham, Bellingham International Airport (8.1 miles)

  • Lowest 6 July, 2026

    49.6 °F

  • Average July

    61.5 °F

  • Highest 6 July, 2026

    78.7 °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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