Dworshak Reservoir Weather Forecast

    • 50
    • 78

    Rain

    • 50
    • 63

    Rain

    • 50
    • 75

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

    • 55
    • 83

    Partly Sunny

    • 53
    • 78

    Chance Rain

Today 6 Sep Northern Clearwater Mountains

Partly cloudy. Chance of rain Showers and a slight chance of Thunderstorms late in the afternoon. Chance of precipitation 30 percent. Highs in the 70s.

Tonight 6 Sep Northern Clearwater Mountains

Chance of Showers and Thunderstorms in the Evening, then rain likely after midnight. Chance of precipitation 90 percent. Lows in the upper 30s to mid 40s.

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Dworshak Reservoir Temperature Statistics

September Temperature

Lewiston, Lewiston-Nez Perce County Airport (39.1 miles)

  • Lowest 3 September, 2026

    53.1 °F

  • Average September

    65.3 °F

  • Highest 1 September, 2026

    80.7 °F

Climate (2021–2026)

Lewiston, Lewiston-Nez Perce County Airport (39.1 miles)

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    66 °F
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