Trout Lake Weather Forecast

    • 50
    • 68

    Rain Likely

    • 51
    • 69

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 50
    • 71

    Chance Rain

    • 50
    • 68

    Chance Rain

    • 51
    • 70

    Slight Chance Rain

Today 14 Sep San Juan County

Areas of fog in the morning. Rain likely through the day. Rainfall Amounts less than a tenth of an inch likely. Highs in the mid 60s to lower 70s. South wind 10 to 15 Mph becoming southwest in the afternoon.

Tonight 14 Sep San Juan County

Mostly cloudy with a chance of rain. Lows in the upper 40s to mid 50s. Southwest wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Trout Lake Temperature Statistics

September Temperature

Friday Harbor Airport (4.3 miles)

  • Lowest 10 September, 2025

    48 °F

  • Average September

    58.1 °F

  • Highest 3 September, 2025

    75.9 °F

Climate (2020–Present)

Friday Harbor Airport (4.3 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    59.5 °F
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