Mount Heinen Weather Forecast

    • 63
    • 85

    Increasing Clouds

    • 43
    • 69

    Rain Showers

    • 44
    • 61

    Sunny

    • 44
    • 65

    Mostly Sunny

    • 36
    • 54

    Partly Sunny

    • 38
    • 57

    Mostly Sunny

Today 12 May Boise Mountains

Sunny, warmer with Highs 80 to 95.

Tonight 12 May Boise Mountains

Partly cloudy. Lows 45 to 60.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Heinen Temperature Statistics

May Temperature

Boise Air Terminal (19.3 miles)

  • Lowest 9 May, 2026

    45.6 °F

  • Average May

    64.9 °F

  • Highest 10 May, 2026

    88 °F

Climate (2021–Present)

Boise Air Terminal (19.3 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    66.3 °F
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