Millersylvania State Park Weather Forecast

    • 53
    • 83

    Increasing Clouds

    • 58
    • 87

    Decreasing Clouds

    • 59
    • 94

    Partly Sunny

    • 57
    • 93

    Partly Sunny

    • 54
    • 86

    Partly Sunny

    • 52
    • 79

    Partly Sunny

    • 52
    • 77

    Partly Sunny

Today 19 Jul Lowlands of Lewis and Southern Thurston Counties

Sunny. Highs near 80. Light wind.

Tonight 19 Jul Lowlands of Lewis and Southern Thurston Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. North wind to 10 Mph in the evening becoming light. Gusts to 20 Mph.

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Millersylvania State Park Temperature Statistics

July Temperature

Olympia, Olympia Airport (3.7 miles)

  • Lowest 13 July, 2026

    43.6 °F

  • Average July

    63 °F

  • Highest 6 July, 2026

    87.7 °F

Climate (2021–2026)

Olympia, Olympia Airport (3.7 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.2 °F
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