Lake Osoyoos State Park Weather Forecast

    • 30
    • 43

    Mostly Cloudy

    • 31
    • 40

    Rain Likely

    • 33
    • 41

    Rain

    • 32
    • 44

    Chance Rain

    • 36
    • 44

    Chance Rain

    • 38
    • 46

    Rain Likely

    • 37
    • 49

    Chance Rain

Today 3 Dec Okanogan Valley

Patchy freezing fog in the morning. Mostly cloudy. Highs in the mid 30s to lower 40s.

Tonight 3 Dec Okanogan Valley

Mostly cloudy. Patchy freezing fog. Lows in the upper 20s to lower 30s.

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Lake Osoyoos State Park Temperature Statistics

December Temperature

Omak Airport (33.6 miles)

  • Lowest 1 December, 2025

    28.9 °F

  • Average December

    30.9 °F

  • Highest 1 December, 2025

    33.1 °F

Climate (2020–Present)

Omak Airport (33.6 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    62.8 °F
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