Bellingham International Airport Weather Forecast

    • 49
    • 65

    Mostly Cloudy

    • 46
    • 65

    Mostly Cloudy

    • 48
    • 63

    Chance Rain

    • 46
    • 61

    Chance Rain

    • 45
    • 63

    Partly Sunny

Today 22 Sep Lowlands of Western Whatcom County

Partly sunny until late afternoon then becoming sunny. Highs in the 60s. Light wind becoming southwest to 10 Mph in the afternoon.

Tonight 22 Sep Lowlands of Western Whatcom County

Mostly cloudy. A slight chance of rain after midnight. A chance of rain in the morning. Lows in the upper 40s to mid 50s. South wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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Bellingham International Airport Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (0 miles)

  • Lowest 18 September, 2026

    43.6 °F

  • Average September

    59.4 °F

  • Highest 8 September, 2026

    72.6 °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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