Tieton State Airport Weather Forecast

    • 49
    • 71

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 54
    • 80

    Mostly Sunny

    • 53
    • 72

    Chance Rain Showers

    • 48
    • 66

    Slight Chance Rain Showers

Today 15 Sep Lower Slopes of the Eastern Washington Cascades Crest

Sunny. Highs in the lower 60s to lower 70s, except in the lower to mid 70s Valleys. Northwest wind 5 to 10 Mph with Gusts to around 20 Mph shifting to the southeast in the afternoon.

Tonight 15 Sep Lower Slopes of the Eastern Washington Cascades Crest

Mostly clear. Lows in the mid 40s to lower 50s. East wind 5 to 10 Mph in the Evening, becoming light.

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Tieton State Airport Temperature Statistics

September Temperature

Stampede Pass (44.7 miles)

  • Lowest 12 September, 2025

    48 °F

  • Average September

    60.6 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Stampede Pass (44.7 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    48.3 °F
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