Lummi Island - Bumstead Spit Weather Forecast

    • 55
    • 65

    Increasing Clouds

    • 55
    • 63

    Slight Chance Rain

    • 55
    • 65

    Mostly Sunny

    • 56
    • 66

    Partly Sunny

    • 56
    • 66

    Partly Sunny

    • 55
    • 65

    Partly Sunny

Today 6 Sep Lowlands of Western Whatcom County

Sunny. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 6 Sep Lowlands of Western Whatcom County

Mostly clear. Lows in the lower to mid 50s. South wind to 10 Mph increasing to 10 to 15 Mph after midnight.

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Lummi Island - Bumstead Spit Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (8.1 miles)

  • Lowest 4 September, 2026

    46.9 °F

  • Average September

    60.9 °F

  • Highest 2 September, 2026

    71.7 °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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