Grangeville Weather Forecast

    • 44
    • 65

    Sunny

    • 50
    • 77

    Mostly Sunny

    • 49
    • 79

    Chance Rain

    • 44
    • 65

    Partly Sunny

    • 44
    • 65

    Rain Likely

    • 40
    • 57

    Chance Rain

    • 42
    • 63

    Mostly Sunny

Today 8 Sep Orofino/Grangeville Region

Partly cloudy. Highs 63 to 76.

Tonight 8 Sep Orofino/Grangeville Region

Clear. Lows in the 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grangeville Temperature Statistics

September Temperature

Grangeville - Idaho County Airport (0.6 miles)

  • Lowest 5 September, 2026

    41 °F

  • Average September

    55.1 °F

  • Highest 1 September, 2026

    82.4 °F

Climate (2021–2026)

Grangeville - Idaho County Airport (0.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    57.9 °F
Get WillyWeather+ to remove ads