Lost Lake Weather Forecast

    • 52
    • 67

    Increasing Clouds

    • 55
    • 72

    Mostly Cloudy

    • 53
    • 69

    Mostly Cloudy

    • 52
    • 67

    Mostly Cloudy

    • 52
    • 65

    Rain Likely

    • 50
    • 65

    Chance Rain

    • 50
    • 65

    Mostly Cloudy

Today 20 Sep Island County

Partly sunny. Highs in the lower to mid 60s.

Tonight 20 Sep Island County

Partly cloudy. Lows near 50. West 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 16 September, 2026

    44.1 °F

  • Average September

    59.7 °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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