Grouse Flat State Wildlife Recreation Area Weather Forecast

    • 59
    • 84

    Mostly Sunny

    • 58
    • 80

    Sunny

    • 59
    • 82

    Sunny

    • 65
    • 89

    Mostly Sunny

    • 66
    • 92

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

Today 19 Aug Northeast Blue Mountains

Sunny. Highs in the 80s. North wind 5 to 15 Mph in the afternoon.

Tonight 19 Aug Northeast Blue Mountains

Mostly clear. Lows in the upper 50s to lower 60s. Northwest wind 5 to 15 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable.

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Grouse Flat State Wildlife Recreation Area Temperature Statistics

August Temperature

Lewiston, Lewiston-Nez Perce County Airport (33.6 miles)

  • Lowest 5 August, 2025

    57.7 °F

  • Average August

    77.8 °F

  • Highest 11 August, 2025

    102.7 °F

Climate (2020–Present)

Lewiston, Lewiston-Nez Perce County Airport (33.6 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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