Agate Lake Weather Forecast

    • 54
    • 62

    Increasing Clouds

    • 53
    • 61

    Partly Sunny

    • 53
    • 60

    Partly Sunny

    • 52
    • 60

    Partly Sunny

    • 53
    • 62

    Partly Sunny

    • 52
    • 61

    Mostly Cloudy

    • 52
    • 61

    Mostly Cloudy

Today 17 Sep Lowlands of Western Whatcom County

Partly sunny. A slight chance of rain in the afternoon. Highs near 70.

Tonight 17 Sep Lowlands of Western Whatcom County

Mostly clear. Lows in the upper 40s to mid 50s. Light wind.

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Agate Lake Temperature Statistics

September Temperature

Bellingham, Bellingham International Airport (7.5 miles)

  • Lowest 6 September, 2026

    44.7 °F

  • Average September

    60.3 °F

  • Highest 8 September, 2026

    72.6 °F

Climate (2021–2026)

Bellingham, Bellingham International Airport (7.5 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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