Hells Gate State Park Weather Forecast

    • 64
    • 87

    Chance Rain Showers

    • 57
    • 82

    Chance Thunderstorms

    • 61
    • 87

    Mostly Sunny

    • 63
    • 91

    Partly Sunny

    • 66
    • 96

    Mostly Sunny

    • 68
    • 100

    Hot

    • 68
    • 101

    Hot

Today 6 Aug Lewiston Area

Cloudy. A chance of Showers in the afternoon. Highs in the mid 70s to mid 80s. West wind 5 to 15 Mph in the afternoon. Gusts up to 25 Mph. Chance of precipitation 20 percent.

Tonight 6 Aug Lewiston Area

Mostly cloudy. A chance of Showers and Thunderstorms. Lows in the mid 50s to lower 60s. West wind 5 to 15 Mph in the Evening, becoming light and variable. Gusts up to 25 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a quarter of an Inch, except higher Amounts possible in Thunderstorms.

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Hells Gate State Park Temperature Statistics

August Temperature

Lewiston, Lewiston-Nez Perce County Airport (1.9 miles)

  • Lowest 3 August, 2025

    61 °F

  • Average August

    76.7 °F

  • Highest 2 August, 2025

    93.9 °F

Climate (2020–Present)

Lewiston, Lewiston-Nez Perce County Airport (1.9 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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