Winchester Lake Weather Forecast

    • 23
    • 37

    Gradual Clearing

    • 28
    • 40

    Mostly Cloudy

    • 29
    • 42

    Mostly Cloudy

    • 33
    • 42

    Mostly Cloudy

    • 34
    • 44

    Chance Rain

    • 33
    • 47

    Mostly Cloudy

Today 26 Jan Lewis and Southern Nez Perce Counties

Mostly sunny in the Morning, becoming mostly cloudy. Highs in the mid 30s to lower 40s.

Tonight 26 Jan Lewis and Southern Nez Perce Counties

Partly cloudy. Lows in the lower 20s to lower 30s.

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  • Temperature Real-Time

Winchester Lake Temperature Statistics

January Temperature

Grangeville - Idaho County Airport (30.4 miles)

  • Lowest 24 January, 2026

    17.6 °F

  • Average January

    31.8 °F

  • Highest 3 January, 2026

    51.8 °F

Climate (2021–Present)

Grangeville - Idaho County Airport (30.4 miles)

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  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    57.8 °F
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