Fort Simcoe State Park Weather Forecast

    • 52
    • 69

    Chance Rain Showers

    • 44
    • 67

    Chance Rain Showers

    • 40
    • 59

    Chance Rain Showers

    • 39
    • 54

    Rain Showers Likely

    • 38
    • 49

    Chance Rain Showers

    • 39
    • 55

    Partly Sunny

Today 9 Oct Yakima Valley

Mostly sunny. A 20 percent chance of rain Showers in the morning. Highs in the lower to mid 70s. Northwest wind 5 to 10 Mph in the Morning, becoming light.

Tonight 9 Oct Yakima Valley

Mostly cloudy. Lows in the upper 40s to lower 50s. Light wind.

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Fort Simcoe State Park Temperature Statistics

October Temperature

Yakima Air Terminal - McAllister Field (20.5 miles)

  • Lowest 6 October, 2025

    34 °F

  • Average October

    54.6 °F

  • Highest 3 October, 2025

    72 °F

Climate (2020–Present)

Yakima Air Terminal - McAllister Field (20.5 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    65.1 °F
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