Hummel Lake Weather Forecast

    • 55
    • 65

    Mostly Sunny

    • 56
    • 67

    Mostly Sunny

    • 55
    • 71

    Partly Sunny

    • 56
    • 74

    Mostly Cloudy

    • 55
    • 73

    Mostly Cloudy

    • 55
    • 71

    Mostly Cloudy

    • 54
    • 72

    Mostly Cloudy

Today 2 Sep San Juan County

Mostly sunny. Patchy fog in the morning. Haze late in the afternoon. Highs in the 60s. Light wind.

Tonight 2 Sep San Juan County

Mostly clear. Haze. Lows in the mid 50s to lower 60s. Light wind.

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Hummel Lake Temperature Statistics

September Temperature

Friday Harbor Airport (6.2 miles)

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  • Average September

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Climate (2020–Present)

Friday Harbor Airport (6.2 miles)

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  • Average Low 2020–2025

    44.3 °F
  • Average 2020–2025

    51.7 °F
  • Average High 2020–2025

    59.6 °F
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