Alturas Lake Weather Forecast

    • 43
    • 58

    Mostly Cloudy

    • 45
    • 58

    Mostly Cloudy

    • 46
    • 63

    Rain

    • 40
    • 49

    Rain Showers

    • 40
    • 52

    Mostly Cloudy

    • 41
    • 55

    Chance Rain

    • 43
    • 54

    Chance Rain

Today 22 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy with a chance of rain and snow. Snow level near 7000 feet. Afternoon pass Temperatures in the lower 50s.

Tonight 22 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy. Freezing level near 10000 feet. Lows in the lower 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alturas Lake Temperature Statistics

September Temperature

Ellensburg, Ellensburg Bowers Field (53.4 miles)

  • Lowest 3 September, 2026

    40.6 °F

  • Average September

    59.1 °F

  • Highest 1 September, 2026

    83.6 °F

Climate (2021–2026)

Ellensburg, Ellensburg Bowers Field (53.4 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    62.6 °F
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