Mount Heinen Weather Forecast

    • 36
    • 47

    Mostly Sunny

    • 41
    • 54

    Mostly Sunny

    • 40
    • 58

    Partly Sunny

    • 43
    • 58

    Partly Sunny

    • 42
    • 60

    Rain Showers

    • 37
    • 46

    Rain Showers Likely

    • 34
    • 41

    Snow Showers Likely

Today 20 Oct Boise Mountains

Sunny. Highs 42 to 55.

Tonight 20 Oct Boise Mountains

Mostly clear. Areas of dense fog. Lows 22 to 36.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Heinen Temperature Statistics

October Temperature

Boise Air Terminal (19.3 miles)

  • Lowest 18 October, 2025

    37.9 °F

  • Average October

    55.7 °F

  • Highest 10 October, 2025

    84 °F

Climate (2020–Present)

Boise Air Terminal (19.3 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    65.7 °F
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