Bellingham International Airport Weather Forecast

    • 50
    • 67

    Decreasing Clouds

    • 51
    • 67

    Slight Chance Rain

    • 51
    • 69

    Slight Chance Rain

    • 53
    • 71

    Mostly Sunny

    • 54
    • 68

    Partly Sunny

    • 53
    • 69

    Partly Sunny

    • 54
    • 73

    Mostly Sunny

Today 3 Sep Lowlands of Western Whatcom County

Breezy. Partly sunny. A slight chance of Showers in the afternoon. Highs in the 60s. East wind 15 to 25 Mph becoming south 10 to 15 Mph in the afternoon.

Tonight 3 Sep Lowlands of Western Whatcom County

Partly cloudy. Lows in the upper 40s to mid 50s. Light wind.

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Bellingham International Airport Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (0 miles)

  • Lowest 1 September, 2026

    52 °F

  • Average September

    61 °F

  • Highest 1 September, 2026

    66.9 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (0 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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