Mary Ann Lake Weather Forecast

    • 42
    • 68

    Decreasing Clouds

    • 45
    • 65

    Mostly Cloudy

    • 43
    • 63

    Chance Rain Showers

    • 41
    • 60

    Chance Rain Showers

    • 41
    • 64

    Partly Sunny

    • 42
    • 65

    Partly Sunny

Today 10 Sep Okanogan Highlands

Partly cloudy. Highs in the lower 70s to lower 80s. Gusts up to 20 Mph in the afternoon.

Tonight 10 Sep Okanogan Highlands

Partly cloudy. Lows in the lower 40s to lower 50s.

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Mary Ann Lake Temperature Statistics

September Temperature

Omak Airport (37.9 miles)

  • Lowest 8 September, 2026

    46 °F

  • Average September

    63.8 °F

  • Highest 1 September, 2026

    83.6 °F

Climate (2021–2026)

Omak Airport (37.9 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.9 °F
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