Ellensburg Weather Forecast

    • 49
    • 80

    Sunny

    • 51
    • 86

    Mostly Sunny

    • 54
    • 85

    Partly Sunny

    • 54
    • 87

    Partly Sunny

    • 52
    • 80

    Partly Sunny

    • 48
    • 74

    Partly Sunny

Today 16 Sep Kittitas Valley

Sunny. Highs in the upper 70s to lower 80s. Northeast wind 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 16 Sep Kittitas Valley

Mostly clear. Lows in the 50s. East wind 5 to 10 Mph with Gusts to around 20 Mph in the Evening, becoming light.

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Ellensburg Temperature Statistics

September Temperature

Ellensburg, Ellensburg Bowers Field (2.5 miles)

  • Lowest 13 September, 2025

    48 °F

  • Average September

    70.5 °F

  • Highest 3 September, 2025

    99 °F

Climate (2020–Present)

Ellensburg, Ellensburg Bowers Field (2.5 miles)

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  • Average Low 2020–2025

    40.4 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    62.9 °F
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