Lost Lake Weather Forecast

    • 54
    • 76

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 54
    • 73

    Mostly Cloudy

    • 53
    • 72

    Chance Rain

    • 53
    • 72

    Partly Sunny

    • 53
    • 75

    Partly Sunny

Today 8 Sep Island County

Partly sunny in the morning then becoming sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 8 Sep Island County

Mostly clear. Lows in the lower to mid 50s. Northwest wind to 10 Mph in the evening becoming light.

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Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 5 September, 2026

    48.9 °F

  • Average September

    60.7 °F

  • Highest 4 September, 2026

    73 °F

Climate (2021–2026)

Arlington Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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