Fernan Lake Weather Forecast

    • 50
    • 66

    Decreasing Clouds

    • 56
    • 84

    Mostly Sunny

    • 57
    • 87

    Sunny

    • 59
    • 88

    Mostly Sunny

    • 60
    • 88

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 52
    • 73

    Partly Sunny

Today 15 Sep Coeur d'Alene Area

Mostly cloudy with a 20 percent chance of rain Showers. Highs in the mid 60s to lower 70s. Southwest wind 5 to 10 Mph.

Tonight 15 Sep Coeur d'Alene Area

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

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Fernan Lake Temperature Statistics

September Temperature

Coeur d'Alene Airport - Pappy Boyington Field (7.5 miles)

  • Lowest 13 September, 2025

    55 °F

  • Average September

    74.2 °F

  • Highest 2 September, 2025

    100 °F

Climate (2020–Present)

Coeur d'Alene Airport - Pappy Boyington Field (7.5 miles)

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  • Average Low 2020–2025

    39.3 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    58.8 °F
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