Mossyrock Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain Showers

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    Rain

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    Rain

Today 13 Dec Foothills and Valleys of Thurston and Lewis Counties

Sunny. Patchy dense fog until late afternoon. Highs in the mid 50s to lower 60s. Light wind.

Tonight 13 Dec Foothills and Valleys of Thurston and Lewis Counties

Mostly cloudy then becoming partly cloudy after midnight then becoming mostly cloudy. A chance of rain late in the night. Lows in the mid to upper 40s. South wind to 10 Mph. Gusts to 20 Mph after midnight.

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Mossyrock Temperature Statistics

December Temperature

Chehalis-Centralia Airport (25.5 miles)

  • Lowest 1 December, 2025

    33.8 °F

  • Average December

    48.2 °F

  • Highest 10 December, 2025

    59 °F

Climate (2020–Present)

Chehalis-Centralia Airport (25.5 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    61.4 °F
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