Lost Lake Weather Forecast

    • 55
    • 73

    Increasing Clouds

    • 54
    • 73

    Rain Likely

    • 56
    • 76

    Chance Rain

    • 53
    • 73

    Partly Sunny

    • 55
    • 73

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

Today 11 Sep Island County

Cloudy in the morning then becoming partly sunny. Highs in the mid 60s to lower 70s. Southeast wind to 10 Mph becoming south in the afternoon.

Tonight 11 Sep Island County

Cloudy. Lows in the lower to mid 50s. Northwest wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 8 September, 2026

    46 °F

  • Average September

    60.2 °F

  • Highest 8 September, 2026

    73.9 °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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