Lystair Lake Weather Forecast

    • 46
    • 71

    Partly Sunny

    • 44
    • 69

    Mostly Cloudy

    • 47
    • 64

    Rain Likely

    • 43
    • 63

    Slight Chance Thunderstorms

    • 42
    • 65

    Mostly Cloudy

    • 44
    • 64

    Partly Sunny

Today 22 Sep Middle Chehalis River Valley

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 22 Sep Middle Chehalis River Valley

Mostly cloudy until early Morning, then a slight chance of rain in the morning. Lows in the 40s to lower 50s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lystair Lake Temperature Statistics

September Temperature

Shelton, Shelton Sanderson Field (10.6 miles)

  • Lowest 16 September, 2026

    41 °F

  • Average September

    59 °F

  • Highest 9 September, 2026

    82.9 °F

Climate (2021–2026)

Shelton, Shelton Sanderson Field (10.6 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    61.2 °F
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