Mary Ann Lake Weather Forecast

    • 50
    • 72

    Chance Thunderstorms

    • 50
    • 74

    Chance Rain Showers

    • 53
    • 77

    Partly Sunny

    • 53
    • 79

    Mostly Cloudy

    • 54
    • 80

    Mostly Cloudy

    • 53
    • 78

    Slight Chance Rain Showers

Today 13 Aug Okanogan Highlands

Mostly cloudy. A chance of rain Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. Gusts up to 20 Mph in the morning. Chance of precipitation 40 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 13 Aug Okanogan Highlands

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

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Mary Ann Lake Temperature Statistics

August Temperature

Omak Airport (37.9 miles)

  • Lowest 3 August, 2026

    50.6 °F

  • Average August

    72.9 °F

  • Highest 6 August, 2026

    95.6 °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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