Bellingham International Airport Weather Forecast

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    Rain Showers

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    Mostly Cloudy

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    • 63

    Partly Sunny

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    Rain Likely

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    Rain Likely

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    Chance Rain

Today 25 Sep Lowlands of Western Whatcom County

Windy. Showers and a slight chance of Thunderstorms. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Highs in the upper 50s to mid 60s. Northeast wind 20 to 30 Mph becoming west 15 to 30 Mph in the afternoon. Gusts to 40 Mph.

Tonight 25 Sep Lowlands of Western Whatcom County

Windy. Mostly cloudy. Showers likely in the Evening, then a chance of Showers in the late evening and early morning. A slight chance of Showers in the morning. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid 40s to lower 50s. South wind 20 to 30 Mph.

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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

    59.2 °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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