Mossyrock Weather Forecast

    • 38
    • 52

    Rain Showers

    • 41
    • 63

    Increasing Clouds

    • 43
    • 66

    Partly Sunny

    • 44
    • 66

    Mostly Cloudy

    • 45
    • 70

    Partly Sunny

    • 46
    • 72

    Partly Sunny

    • 46
    • 72

    Partly Sunny

Today 16 May Foothills and Valleys of Thurston and Lewis Counties

Rain Showers likely in the Morning, then rain Showers and a chance of Thunderstorms in the afternoon. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Highs in the lower to mid 50s. Southwest wind 10 to 15 Mph becoming west in the afternoon. Gusts to 25 Mph.

Tonight 16 May Foothills and Valleys of Thurston and Lewis Counties

Mostly cloudy. A chance of rain Showers and a slight chance of Thunderstorms in the Evening, then a chance of rain late in the evening. Lows in the mid to upper 30s. West wind to 10 Mph with Gusts to 20 Mph in the evening becoming light.

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Mossyrock Temperature Statistics

May Temperature

Chehalis-Centralia Airport (25.5 miles)

  • Lowest 1 May, 2026

    44.6 °F

  • Average May

    59.1 °F

  • Highest 3 May, 2026

    84.2 °F

Climate (2021–Present)

Chehalis-Centralia Airport (25.5 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    61.4 °F
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