Lystair Lake Weather Forecast

    • 54
    • 77

    Increasing Clouds

    • 53
    • 79

    Mostly Cloudy

    • 55
    • 86

    Partly Sunny

    • 55
    • 77

    Mostly Cloudy

    • 53
    • 70

    Slight Chance Rain

    • 53
    • 76

    Mostly Cloudy

Today 18 Aug Middle Chehalis River Valley

Cloudy in the morning then becoming mostly sunny. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 18 Aug Middle Chehalis River Valley

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

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Lystair Lake Temperature Statistics

August Temperature

Shelton, Shelton Sanderson Field (10.6 miles)

  • Lowest 3 August, 2026

    44.1 °F

  • Average August

    63.9 °F

  • Highest 5 August, 2026

    91.9 °F

Climate (2021–2026)

Shelton, Shelton Sanderson Field (10.6 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    61.2 °F
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