Alta Lake State Park Weather Forecast

    • 37
    • 55

    Gradual Clearing

    • 33
    • 52

    Mostly Sunny

    • 39
    • 51

    Mostly Cloudy

    • 37
    • 55

    Mostly Cloudy

    • 39
    • 55

    Mostly Cloudy

    • 37
    • 53

    Mostly Cloudy

    • 36
    • 52

    Slight Chance Rain Showers

Today 31 Oct Okanogan Valley

Mostly cloudy with a 20 percent chance of rain Showers. Highs in the upper 40s to lower 50s.

Tonight 31 Oct Okanogan Valley

Mostly cloudy. A chance of rain Showers in the evening. Lows in the mid to upper 30s. Chance of precipitation 40 percent. Rainfall Amounts less than a tenth of an inch.

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Alta Lake State Park Temperature Statistics

October Temperature

Omak Airport (35.4 miles)

  • Lowest 29 October, 2026

    27 °F

  • Average October

    52.7 °F

  • Highest 4 October, 2026

    79.6 °F

Climate (2021–2026)

Omak Airport (35.4 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    63 °F
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