Winchester Lake Weather Forecast

    • 17
    • 26

    Mostly Cloudy

    • 10
    • 28

    Partly Sunny

    • 15
    • 27

    Partly Sunny

    • 17
    • 32

    Partly Sunny

    • 18
    • 32

    Partly Sunny

    • 23
    • 35

    Chance Snow

Today 18 Jan Lewis and Southern Nez Perce Counties

Partly sunny. Highs in the upper 20s to lower 30s.

Tonight 18 Jan Lewis and Southern Nez Perce Counties

Mostly cloudy. Lows 17 to 22.

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Winchester Lake Temperature Statistics

January Temperature

Grangeville - Idaho County Airport (30.4 miles)

  • Lowest 14 January, 2025

    21.2 °F

  • Average January

    31.8 °F

  • Highest 4 January, 2025

    42.8 °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

    46.8 °F

  • Average High 2020–2025

    57.3 °F
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