Winchester Weather Forecast

    • 55
    • 80

    Increasing Clouds

    • 57
    • 76

    Mostly Cloudy

    • 54
    • 74

    Chance Rain Showers

    • 57
    • 78

    Slight Chance Thunderstorms

    • 58
    • 83

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

Today 19 Jul Lewis and Southern Nez Perce Counties

Sunny. Highs in the 80s. West wind 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 19 Jul Lewis and Southern Nez Perce Counties

Mostly clear in the Evening, becoming mostly cloudy. Lows in the mid 50s to lower 60s. West wind 5 to 15 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable.

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Winchester Temperature Statistics

July Temperature

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

  • Lowest 7 July, 2025

    58.6 °F

  • Average July

    80.9 °F

  • Highest 8 July, 2025

    104.6 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    65.8 °F
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