Round Lake Weather Forecast

    • 51
    • 65

    Chance Thunderstorms

    • 52
    • 71

    Slight Chance Thunderstorms

    • 52
    • 77

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 52
    • 76

    Mostly Sunny

Today 17 Aug Southern Clearwater Mountains

Mostly cloudy with a chance of rain Showers. Chance of Thunderstorms. Chance of precipitation 50 percent. Highs 70 to 85.

Tonight 17 Aug Southern Clearwater Mountains

Mostly clear. A 20 percent chance of Showers and Thunderstorms in the evening. Lows 45 to 60.

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Round Lake Temperature Statistics

August Temperature

Grangeville - Idaho County Airport (34.8 miles)

  • Lowest 5 August, 2025

    46.4 °F

  • Average August

    67.7 °F

  • Highest 12 August, 2025

    93.2 °F

Climate (2020–Present)

Grangeville - Idaho County Airport (34.8 miles)

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  • Average Low 2020–2025

    36.5 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    57.6 °F
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