Alta Lake Weather Forecast

    • 39
    • 53

    Rain

    • 39
    • 57

    Chance Rain

    • 40
    • 57

    Partly Sunny

    • 40
    • 57

    Partly Sunny

    • 43
    • 56

    Chance Rain

    • 46
    • 58

    Rain Likely

Today 18 Oct Okanogan Valley

Mostly cloudy. A chance of rain in the afternoon. Highs in the upper 40s to mid 50s. South wind 5 to 15 Mph with Gusts up to 20 Mph in the afternoon. Chance of precipitation 40 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 18 Oct Okanogan Valley

Rain. Lows in the upper 30s to lower 40s. South wind 5 to 15 Mph in the Evening, becoming light and variable. Chance of precipitation 90 percent. Rainfall Amounts up to a half inch possible.

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Alta Lake Temperature Statistics

October Temperature

Omak Airport (36 miles)

  • Lowest 16 October, 2025

    28 °F

  • Average October

    53.2 °F

  • Highest 7 October, 2025

    73 °F

Climate (2020–Present)

Omak Airport (36 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    62.7 °F
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