Cottonwood Beach Weather Forecast

    • 56
    • 68

    Gradual Clearing

    • 53
    • 67

    Partly Sunny

    • 54
    • 66

    Mostly Cloudy

    • 53
    • 70

    Partly Sunny

    • 54
    • 67

    Partly Sunny

    • 53
    • 66

    Partly Sunny

    • 54
    • 68

    Partly Sunny

Today 9 Sep Lowlands of Western Whatcom County

Partly sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. Light wind.

Tonight 9 Sep Lowlands of Western Whatcom County

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid to upper 50s. Light wind becoming south 10 to 15 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Beach Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (13.7 miles)

  • Lowest 6 September, 2026

    44.7 °F

  • Average September

    60.2 °F

  • Highest 2 September, 2026

    71.7 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (13.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.1 °F
Get WillyWeather+ to remove ads