Mount Adams Lake Weather Forecast

    • 50
    • 67

    Sunny

    • 52
    • 73

    Mostly Sunny

    • 54
    • 73

    Partly Sunny

    • 49
    • 73

    Mostly Sunny

    • 48
    • 65

    Chance Rain Showers

    • 45
    • 59

    Chance Rain Showers

Today 16 Sep Lower Slopes of the Eastern Washington Cascades Crest

Sunny. Highs in the upper 60s to upper 70s, except in the mid 70s to lower 80s Valleys. East wind 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 16 Sep Lower Slopes of the Eastern Washington Cascades Crest

Mostly clear. Lows in the upper 40s to mid 50s. East wind 5 to 10 Mph with Gusts to around 20 Mph in the Evening, becoming light.

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Mount Adams Lake Temperature Statistics

September Temperature

Yakima Air Terminal - McAllister Field (44.1 miles)

  • Lowest 12 September, 2025

    51.1 °F

  • Average September

    73.3 °F

  • Highest 3 September, 2025

    99 °F

Climate (2020–Present)

Yakima Air Terminal - McAllister Field (44.1 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    65.2 °F
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