Grant Lake Weather Forecast

    • 51
    • 71

    Decreasing Clouds

    • 52
    • 73

    Mostly Sunny

    • 50
    • 72

    Partly Sunny

    • 50
    • 70

    Partly Sunny

    • 51
    • 71

    Partly Sunny

    • 50
    • 71

    Partly Sunny

Today 3 Oct Okanogan Valley

Partly sunny in the morning then clearing. Highs in the 70s.

Tonight 3 Oct Okanogan Valley

Mostly clear. Lows in the upper 40s to lower 50s.

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Grant Lake Temperature Statistics

October Temperature

Omak Airport (25.5 miles)

  • Lowest 1 October, 2026

    53.1 °F

  • Average October

    58.9 °F

  • Highest 1 October, 2026

    69.1 °F

Climate (2021–2026)

Omak Airport (25.5 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.9 °F
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