Rimrock Lake Weather Forecast

    • 55
    • 71

    Sunny

    • 55
    • 79

    Sunny

    • 56
    • 78

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 53
    • 69

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

Today 16 Sep Upper Slopes of the Eastern Washington Cascades Crest

Sunny. Highs in the mid 60s to mid 70s. East wind 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 16 Sep Upper Slopes of the Eastern Washington Cascades Crest

Clear. Lows in the upper 40s to mid 50s.

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Rimrock Lake Temperature Statistics

September Temperature

Stampede Pass (44.1 miles)

  • Lowest 14 September, 2025

    44.1 °F

  • Average September

    59.7 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Stampede Pass (44.1 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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