Lost Lake Weather Forecast

    • 53
    • 70

    Chance Rain

    • 53
    • 75

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

    • 53
    • 72

    Partly Sunny

    • 54
    • 72

    Partly Sunny

Today 15 Sep Island County

Mostly cloudy with a slight chance of Showers in the Morning, then mostly sunny in the afternoon. Highs in the 60s. Northwest wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 15 Sep Island County

Mostly clear. Lows near 50. Northwest wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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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

    60.1 °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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