Grouse Flat State Wildlife Recreation Area Weather Forecast

    • 47
    • 61

    Rain Showers Likely

    • 46
    • 57

    Mostly Cloudy

    • 47
    • 56

    Rain Showers Likely

    • 48
    • 60

    Slight Chance Rain Showers

    • 46
    • 66

    Partly Sunny

    • 47
    • 67

    Partly Sunny

    • 50
    • 70

    Partly Sunny

Today 26 Jun Northeast Blue Mountains

Rain Showers likely and a chance of Thunderstorms. Highs in the upper 50s to upper 60s. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 26 Jun Northeast Blue Mountains

Mostly cloudy. Rain Showers likely and a chance of Thunderstorms in the Evening, then a chance of rain Showers overnight. Lows in the upper 40s to lower 50s. Gusts up to 25 Mph increasing to 35 Mph overnight. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Grouse Flat State Wildlife Recreation Area Temperature Statistics

June Temperature

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

  • Lowest 8 June, 2026

    45.6 °F
  • Average June

    68.3 °F
  • Highest 15 June, 2026

    92.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.7 °F
  • Average 2021–2026

    55.7 °F
  • Average High 2021–2026

    66.1 °F
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