Langlois Lake Weather Forecast

    • 57
    • 84

    Increasing Clouds

    • 55
    • 75

    Chance Rain

    • 55
    • 78

    Partly Sunny

    • 55
    • 81

    Mostly Sunny

    • 58
    • 85

    Mostly Sunny

    • 63
    • 91

    Partly Sunny

Today 15 Jul Foothills and Valleys of Central King County

Mostly sunny. Highs in the lower to mid 80s. Light wind.

Tonight 15 Jul Foothills and Valleys of Central King County

Mostly clear in the Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the mid to upper 50s. Light wind becoming east to 10 Mph after midnight.

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Langlois Lake Temperature Statistics

July Temperature

Renton Municipal Airport (18 miles)

  • Lowest 13 July, 2026

    53.1 °F

  • Average July

    65.8 °F

  • Highest 6 July, 2026

    84 °F

Climate (2021–2026)

Renton Municipal Airport (18 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.2 °F
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