Shellberg Lake Weather Forecast

    • 60
    • 73

    Rain Showers Likely

    • 54
    • 77

    Chance Rain Showers

    • 56
    • 76

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

    • 56
    • 81

    Mostly Sunny

    • 57
    • 82

    Mostly Sunny

Today 15 Aug Okanogan Valley

Mostly cloudy. A chance of rain. Highs in the mid 70s to lower 80s. South wind 5 to 15 Mph in the afternoon. Gusts up to 30 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 15 Aug Okanogan Valley

Cloudy. A chance of rain in the Evening, then rain likely overnight. Lows in the lower to mid 60s. South wind 5 to 15 Mph in the Evening, becoming light and variable. Gusts up to 25 Mph. Chance of precipitation 70 percent. Rainfall Amounts between a tenth and a quarter of an inch possible.

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Shellberg Lake Temperature Statistics

August Temperature

Omak Airport (7.5 miles)

  • Lowest 8 August, 2025

    49.6 °F

  • Average August

    75.9 °F

  • Highest 10 August, 2025

    98.7 °F

Climate (2020–Present)

Omak Airport (7.5 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    62.7 °F
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