Winchester Lake Weather Forecast

    • 42
    • 57

    Chance Rain Showers

    • 44
    • 61

    Chance Rain Showers

    • 49
    • 73

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 55
    • 81

    Partly Sunny

    • 54
    • 75

    Partly Sunny

Today 21 Jun Lewis and Southern Nez Perce Counties

Mostly cloudy. A chance of rain Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 50s to mid 60s. West wind 5 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 21 Jun Lewis and Southern Nez Perce Counties

Rain Showers likely. Lows in the 40s. Gusts up to 20 Mph in the evening. Chance of precipitation 70 percent. Rainfall Amounts around a tenth of an inch.

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Winchester Lake Temperature Statistics

June Temperature

Grangeville - Idaho County Airport (30.4 miles)

  • Lowest 4 June, 2025

    35.6 °F

  • Average June

    62.2 °F

  • Highest 10 June, 2025

    89.6 °F

Climate (2020–Present)

Grangeville - Idaho County Airport (30.4 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    57.5 °F
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