Lost Lake Weather Forecast

    • 55
    • 78

    Mostly Cloudy

    • 54
    • 74

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

    • 55
    • 85

    Partly Sunny

    • 56
    • 76

    Mostly Cloudy

    • 54
    • 73

    Partly Sunny

Today 3 Jul Island County

Cloudy with a slight chance of Showers in the Morning, then mostly cloudy in the afternoon. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 3 Jul Island County

Mostly cloudy. Lows in the lower to mid 50s. West wind 10 to 15 Mph.

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Lost Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 1 July, 2026

    53.1 °F

  • Average July

    58.8 °F

  • Highest 1 July, 2026

    66.9 °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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