Millersylvania State Park Weather Forecast

    • 46
    • 56

    Rain

    • 42
    • 58

    Rain Showers

    • 42
    • 60

    Chance Rain Showers

    • 42
    • 60

    Chance Rain

    • 48
    • 59

    Rain

    • 48
    • 59

    Rain

Today 18 Oct Lowlands of Lewis and Southern Thurston Counties

Patchy fog in the morning. Mostly cloudy in the Morning, then a slight chance of rain late in the morning. Cloudy with a chance of rain in the afternoon. Highs in the mid to upper 50s. Light wind.

Tonight 18 Oct Lowlands of Lewis and Southern Thurston Counties

Rain likely in the Evening, then rain in the late evening and early morning. A chance of Showers in the morning. Rainfall Amounts a half inch to one inch possible. Lows in the mid to upper 40s. South wind 10 to 20 Mph.

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Millersylvania State Park Temperature Statistics

October Temperature

Olympia, Olympia Airport (3.7 miles)

  • Lowest 15 October, 2025

    28 °F

  • Average October

    51.6 °F

  • Highest 7 October, 2025

    75.9 °F

Climate (2020–Present)

Olympia, Olympia Airport (3.7 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    62.1 °F
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