Speelyi Beach Park Weather Forecast

    • 49
    • 68

    Mostly Cloudy

    • 45
    • 71

    Cloudy

    • 43
    • 56

    Rain Showers

    • 42
    • 64

    Partly Sunny

    • 44
    • 71

    Mostly Sunny

    • 46
    • 76

    Sunny

    • 50
    • 80

    Mostly Sunny

Today 11 Sep Lower Slopes of the Eastern Washington Cascades Crest

Partly cloudy. Highs in the upper 50s to upper 60s, except in the upper 60s to lower 70s Valleys. South wind 5 to 10 Mph.

Tonight 11 Sep Lower Slopes of the Eastern Washington Cascades Crest

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

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Speelyi Beach Park Temperature Statistics

September Temperature

Stampede Pass (12.4 miles)

  • Lowest 3 September, 2026

    39.9 °F

  • Average September

    51 °F

  • Highest 9 September, 2026

    71.1 °F

Climate (2021–2026)

Stampede Pass (12.4 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
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