Federation Forest State Park Weather Forecast

    • 47
    • 54

    Chance Rain

    • 48
    • 59

    Increasing Clouds

    • 47
    • 60

    Slight Chance Rain

    • 50
    • 70

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

Today 13 Sep Cascades of Southern King County

Rain and snow in the late morning and early Afternoon, then cloudy with a chance of rain late in the afternoon. Snow level near 7500 feet. Rainfall Amounts a half inch to one inch possible. No new snow accumulation. Afternoon pass Temperatures in the upper 40s. Light wind in the Passes.

Tonight 13 Sep Cascades of Southern King County

Cloudy with a chance of rain in the Evening, then mostly cloudy with a slight chance of rain after midnight. Patchy dense fog late in the night. Snow level near 7500 feet. Light wind in the Passes.

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Federation Forest State Park Temperature Statistics

September Temperature

Ellensburg, Ellensburg Bowers Field (55.3 miles)

  • Lowest 3 September, 2026

    40.6 °F

  • Average September

    59.6 °F

  • Highest 1 September, 2026

    83.6 °F

Climate (2021–2026)

Ellensburg, Ellensburg Bowers Field (55.3 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    62.5 °F
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