Mossyrock Weather Forecast

    • 53
    • 78

    Increasing Clouds

    • 56
    • 84

    Becoming Sunny

    • 55
    • 81

    Chance Rain Showers

    • 53
    • 69

    Chance Rain Showers

    • 50
    • 72

    Mostly Cloudy

    • 52
    • 79

    Partly Sunny

    • 50
    • 77

    Mostly Cloudy

Today 19 Aug Foothills and Valleys of Thurston and Lewis Counties

Mostly cloudy in the morning then becoming mostly sunny. Highs near 80. Light wind.

Tonight 19 Aug Foothills and Valleys of Thurston and Lewis Counties

Mostly clear. Lows in the lower to mid 50s. Light wind.

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Mossyrock Temperature Statistics

August Temperature

Chehalis-Centralia Airport (25.5 miles)

  • Lowest 3 August, 2026

    48.2 °F

  • Average August

    65.4 °F

  • Highest 5 August, 2026

    89.6 °F

Climate (2021–2026)

Chehalis-Centralia Airport (25.5 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.3 °F
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