Mount Heinen Weather Forecast

    • 45
    • 67

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 52
    • 68

    Mostly Sunny

    • 49
    • 65

    Partly Sunny

    • 48
    • 60

    Mostly Sunny

Today 8 Sep Boise Mountains

Areas of fog this morning. Sunny. Highs 61 to 75.

Tonight 8 Sep Boise Mountains

Mostly clear. Lows 31 to 46.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Heinen Temperature Statistics

September Temperature

Boise Air Terminal (19.3 miles)

  • Lowest 3 September, 2026

    46.7 °F

  • Average September

    64.4 °F

  • Highest 1 September, 2026

    86.6 °F

Climate (2021–2026)

Boise Air Terminal (19.3 miles)

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

  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    66.3 °F
Get WillyWeather+ to remove ads