Lost Lake Weather Forecast

    • 57
    • 79

    Mostly Cloudy

    • 54
    • 75

    Partly Sunny

    • 54
    • 72

    Chance Rain

    • 53
    • 71

    Chance Rain

    • 54
    • 75

    Partly Sunny

    • 54
    • 73

    Partly Sunny

Today 9 Sep Island County

Partly sunny. Highs in the upper 60s to mid 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 9 Sep Island County

Partly cloudy. Lows in the lower to mid 50s. Light wind.

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  • Temperature Real-Time

Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 6 September, 2026

    46.9 °F

  • Average September

    60.5 °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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