Lost Lake Weather Forecast

    • 53
    • 76

    Increasing Clouds

    • 53
    • 73

    Mostly Cloudy

    • 54
    • 71

    Partly Sunny

    • 54
    • 73

    Chance Rain

    • 53
    • 67

    Chance Rain

    • 53
    • 67

    Mostly Cloudy

    • 54
    • 69

    Mostly Cloudy

Today 18 Sep Island County

Partly sunny. A chance of rain in the Morning, then a slight chance of rain in the afternoon. Highs in the 60s.

Tonight 18 Sep Island County

Partly cloudy until early morning then becoming mostly cloudy. Lows in the lower to mid 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.9 °F

  • Highest 9 September, 2026

    78.1 °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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