Alta Lake State Park Weather Forecast

    • 29
    • 39

    Mostly Cloudy

    • 31
    • 37

    Chance Rain/Snow

    • 34
    • 41

    Rain

    • 34
    • 43

    Chance Rain

    • 34
    • 42

    Chance Rain

    • 37
    • 43

    Rain Likely

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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Alta Lake State Park Temperature Statistics

December Temperature

Omak Airport (35.4 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 (35.4 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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