Capitol State Forest Weather Forecast

    • 45
    • 55

    Chance Rain

    • 45
    • 59

    Mostly Cloudy

    • 47
    • 62

    Mostly Cloudy

    • 47
    • 64

    Partly Sunny

    • 47
    • 67

    Partly Sunny

    • 49
    • 69

    Partly Sunny

    • 48
    • 64

    Mostly Cloudy

Today 29 Sep Willapa and Black Hills

Partly sunny. Highs in the mid to upper 60s.

Tonight 29 Sep Willapa and Black Hills

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

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Capitol State Forest Temperature Statistics

September Temperature

Olympia, Olympia Airport (12.4 miles)

  • Lowest 27 September, 2026

    39 °F

  • Average September

    58.5 °F

  • Highest 9 September, 2026

    82.7 °F

Climate (2021–2026)

Olympia, Olympia Airport (12.4 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    62.2 °F
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