Riverside Airport Weather Forecast

    • 53
    • 73

    Mostly Sunny

    • 55
    • 76

    Increasing Clouds

    • 52
    • 69

    Partly Sunny

    • 51
    • 67

    Mostly Cloudy

    • 51
    • 73

    Chance Rain

    • 52
    • 72

    Partly Sunny

    • 53
    • 73

    Partly Sunny

Today 8 Sep Lowlands of Western Whatcom County

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind.

Tonight 8 Sep Lowlands of Western Whatcom County

Mostly clear. Lows in the lower to mid 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Riverside Airport Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (12.4 miles)

  • Lowest 6 September, 2026

    45 °F

  • Average September

    60.3 °F

  • Highest 2 September, 2026

    71.7 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (12.4 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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