Bellingham Weather Forecast

    • 51
    • 66

    Rain

    • 48
    • 63

    Rain Showers

    • 45
    • 65

    Partly Sunny

    • 46
    • 66

    Partly Sunny

    • 48
    • 64

    Chance Rain

    • 48
    • 64

    Chance Rain

Today 24 Sep Lowlands of Western Whatcom County

Cloudy. Patchy fog in the morning. A chance of rain late in the afternoon. Highs in the 60s. North wind to 10 Mph becoming northwest in the afternoon.

Tonight 24 Sep Lowlands of Western Whatcom County

Rain likely in the Evening, then rain in the late evening and early morning. Rain likely in the morning. Rainfall Amounts a quarter to a half inch possible. Lows in the upper 40s to mid 50s. Northwest wind to 10 Mph becoming east after midnight.

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Bellingham Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (3.1 miles)

  • Lowest 18 September, 2026

    43.6 °F

  • Average September

    59.3 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (3.1 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.2 °F
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