Mount Heinen Weather Forecast

    • 53
    • 69

    Mostly Sunny

    • 61
    • 80

    Mostly Sunny

    • 59
    • 79

    Slight Chance Thunderstorms

    • 58
    • 72

    Mostly Cloudy

    • 54
    • 69

    Partly Sunny

    • 55
    • 71

    Partly Sunny

Today 30 Aug Boise Mountains

Areas of fog with patchy smoke in the morning. Sunny. Highs 64 to 78.

Tonight 30 Aug Boise Mountains

Decreasing Clouds. Lows 33 to 48.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Heinen Temperature Statistics

August Temperature

Boise Air Terminal (19.3 miles)

  • Lowest 3 August, 2026

    54.6 °F

  • Average August

    80.5 °F

  • Highest 1 August, 2026

    101.6 °F

Climate (2021–2026)

Boise Air Terminal (19.3 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    66.3 °F
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