Mount Heinen Weather Forecast

    • 72
    • 93

    Patchy Smoke

    • 72
    • 95

    Patchy Smoke

    • 67
    • 88

    Slight Chance Thunderstorms

    • 64
    • 82

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 66
    • 86

    Partly Sunny

    • 64
    • 84

    Partly Sunny

Today 20 Aug Boise Mountains

Sunny. Patchy smoke. Highs 86 to 100.

Tonight 20 Aug Boise Mountains

Decreasing Clouds. Patchy smoke. Lows 52 to 66.

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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

    78.8 °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

    66.2 °F
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