Cottonwood Beach Weather Forecast

    • 47
    • 59

    Increasing Clouds

    • 50
    • 60

    Chance Rain

    • 50
    • 63

    Partly Sunny

    • 51
    • 66

    Mostly Sunny

    • 52
    • 65

    Partly Sunny

    • 52
    • 63

    Mostly Cloudy

    • 50
    • 62

    Mostly Cloudy

Today 30 Sep Lowlands of Western Whatcom County

Mostly sunny. Highs in the 60s.

Tonight 30 Sep Lowlands of Western Whatcom County

Mostly cloudy. Patchy fog after midnight. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Real-Time

Cottonwood Beach Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (13.7 miles)

  • Lowest 27 September, 2026

    41.6 °F

  • Average September

    58 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (13.7 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.1 °F
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