Mary Ann Lake Weather Forecast

    • 40
    • 64

    Mostly Sunny

    • 44
    • 67

    Partly Sunny

    • 48
    • 71

    Partly Sunny

    • 47
    • 73

    Partly Sunny

    • 46
    • 66

    Mostly Cloudy

    • 41
    • 58

    Chance Rain Showers

    • 42
    • 59

    Slight Chance Rain Showers

Today 20 May Okanogan Highlands

Partly cloudy with a 20 percent chance of rain Showers. Highs in the upper 60s to mid 70s.

Tonight 20 May Okanogan Highlands

Mostly clear. Lows in the upper 30s to upper 40s. North wind 5 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mary Ann Lake Temperature Statistics

May Temperature

Omak Airport (37.9 miles)

  • Lowest 16 May, 2026

    35.7 °F

  • Average May

    61.3 °F

  • Highest 3 May, 2026

    86.6 °F

Climate (2021–Present)

Omak Airport (37.9 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    63 °F
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