Square Lake Weather Forecast

    • 51
    • 65

    Chance Thunderstorms

    • 53
    • 72

    Slight Chance Thunderstorms

    • 51
    • 77

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 50
    • 72

    Sunny

    • 53
    • 78

    Mostly Sunny

Today 17 Aug Southern Clearwater Mountains

Mostly cloudy. Areas of rain in the Morning, then chance of Showers and Thunderstorms in the afternoon. Patchy fog in the morning. Haze early in the morning. 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 44 to 59.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Lake Temperature Statistics

August Temperature

Grangeville - Idaho County Airport (33.6 miles)

  • Lowest 5 August, 2025

    46.4 °F

  • Average August

    67.8 °F

  • Highest 12 August, 2025

    93.2 °F

Climate (2020–Present)

Grangeville - Idaho County Airport (33.6 miles)

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  • Average Low 2020–2025

    36.5 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    57.5 °F
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