Winchester Weather Forecast

    • 48
    • 71

    Smoke

    • 52
    • 77

    Sunny

    • 55
    • 84

    Sunny

    • 59
    • 90

    Sunny

    • 57
    • 89

    Sunny

    • 56
    • 84

    Mostly Sunny

Today 3 Aug Lewis and Southern Nez Perce Counties

Sunny, smoke. Highs in the lower 70s to lower 80s. Gusts up to 20 Mph in the afternoon.

Tonight 3 Aug Lewis and Southern Nez Perce Counties

Mostly clear. Smoke in the evening. Haze. Lows in the upper 40s to mid 50s. Gusts up to 20 Mph in the evening.

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Winchester Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2026

    68 °F

  • Average August

    79.6 °F

  • Highest 1 August, 2026

    91.9 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.9 °F
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