Little Sullivan Lake Weather Forecast

    • 47
    • 76

    Increasing Clouds

    • 48
    • 80

    Partly Sunny

    • 49
    • 82

    Mostly Sunny

    • 47
    • 81

    Partly Sunny

    • 46
    • 77

    Partly Sunny

    • 46
    • 78

    Partly Sunny

    • 47
    • 79

    Mostly Sunny

Today 2 Oct Upper Columbia Basin

Sunny. Highs in the mid to upper 70s. Southwest wind 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 2 Oct Upper Columbia Basin

Partly cloudy. Lows in the upper 40s to lower 50s. Light wind.

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Little Sullivan Lake Temperature Statistics

October Temperature

Grant County Airport (27.3 miles)

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Climate (2021–2026)

Grant County Airport (27.3 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    64.2 °F
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