Lost Lake Weather Forecast

    • 55
    • 78

    Becoming Sunny

    • 55
    • 82

    Mostly Sunny

    • 59
    • 86

    Partly Sunny

    • 61
    • 86

    Partly Sunny

    • 60
    • 84

    Partly Sunny

    • 59
    • 82

    Partly Sunny

Today 18 Jul Island County

Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Southwest wind to 10 Mph becoming west in the afternoon.

Tonight 18 Jul Island County

Mostly clear. Lows in the lower to mid 50s. West wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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Lost Lake Temperature Statistics

July Temperature

Arlington Municipal Airport (14.9 miles)

  • Lowest 13 July, 2026

    44.6 °F

  • Average July

    62.1 °F

  • Highest 6 July, 2026

    81 °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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