Mossyrock Park Weather Forecast

    • 55
    • 73

    Increasing Clouds

    • 57
    • 70

    Rain

    • 59
    • 66

    Rain

    • 55
    • 67

    Rain Likely

    • 52
    • 71

    Mostly Cloudy

    • 52
    • 72

    Partly Sunny

Today 13 Aug Foothills and Valleys of Thurston and Lewis Counties

Mostly sunny. Highs in the mid to upper 70s. South wind 10 to 15 Mph becoming west in the afternoon. Gusts to 25 Mph.

Tonight 13 Aug Foothills and Valleys of Thurston and Lewis Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. West wind to 10 Mph with Gusts to 20 Mph becoming southwest after midnight.

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Mossyrock Park Temperature Statistics

August Temperature

Chehalis-Centralia Airport (29.2 miles)

  • Lowest 8 August, 2025

    48.2 °F

  • Average August

    65.1 °F

  • Highest 10 August, 2025

    89.6 °F

Climate (2020–Present)

Chehalis-Centralia Airport (29.2 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    61.4 °F
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