Lost Lake Weather Forecast

    • 53
    • 72

    Decreasing Clouds

    • 53
    • 71

    Mostly Cloudy

    • 54
    • 72

    Partly Sunny

    • 53
    • 69

    Mostly Cloudy

    • 53
    • 67

    Mostly Cloudy

    • 52
    • 65

    Chance Rain

    • 51
    • 65

    Slight Chance Rain

Today 19 Sep Island County

Mostly cloudy until late afternoon then becoming mostly sunny. Highs in the 60s. Light wind.

Tonight 19 Sep Island County

Partly cloudy. Lows in the upper 40s 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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