Lake Osoyoos State Park Weather Forecast

    • 40
    • 55

    Rain

    • 37
    • 59

    Rain Likely

    • 39
    • 58

    Mostly Cloudy

    • 38
    • 58

    Partly Sunny

    • 42
    • 57

    Chance Rain

    • 45
    • 58

    Rain Likely

Today 18 Oct Okanogan Valley

Mostly cloudy with a 40 percent chance of rain. Highs in the upper 40s to mid 50s. South wind 5 to 15 Mph with Gusts up to 20 Mph. 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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Lake Osoyoos State Park Temperature Statistics

October Temperature

Omak Airport (33.6 miles)

  • Lowest 16 October, 2025

    28 °F

  • Average October

    53.2 °F

  • Highest 7 October, 2025

    73 °F

Climate (2020–Present)

Omak Airport (33.6 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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