Winchester Weather Forecast

    • 44
    • 67

    Mostly Sunny

    • 46
    • 75

    Increasing Clouds

    • 40
    • 63

    Rain Showers Likely

    • 36
    • 50

    Chance Rain/Snow

    • 39
    • 61

    Mostly Sunny

    • 46
    • 69

    Mostly Sunny

    • 49
    • 75

    Mostly Sunny

Today 1 May Lewis and Southern Nez Perce Counties

Sunny. Highs in the mid 60s to mid 70s.

Tonight 1 May Lewis and Southern Nez Perce Counties

Mostly clear. Lows in the lower 40s to lower 50s.

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Winchester Temperature Statistics

May Temperature

Lewiston, Lewiston-Nez Perce County Airport (20.5 miles)

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  • Average May

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Climate (2020–Present)

Lewiston, Lewiston-Nez Perce County Airport (20.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    65.4 °F
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