Port of Bellingham Marine Park Weather Forecast

    • 53
    • 69

    Increasing Clouds

    • 53
    • 73

    Mostly Cloudy

    • 54
    • 70

    Partly Sunny

    • 52
    • 70

    Partly Sunny

    • 54
    • 74

    Mostly Sunny

    • 57
    • 77

    Mostly Sunny

Today 11 Sep Lowlands of Western Whatcom County

Mostly cloudy. Highs in the 60s to lower 70s. South wind 10 to 15 Mph becoming southwest in the afternoon.

Tonight 11 Sep Lowlands of Western Whatcom County

Mostly cloudy. Lows in the lower to mid 50s. Light wind becoming north to 10 Mph after midnight.

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Port of Bellingham Marine Park Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (5 miles)

  • Lowest 6 September, 2026

    44.7 °F

  • Average September

    60.7 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (5 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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