Mount Heinen Weather Forecast

    • 35
    • 71

    Rain Showers

    • 35
    • 39

    Rain/Snow

    • 30
    • 43

    Chance Rain/Snow

    • 31
    • 46

    Mostly Sunny

    • 33
    • 47

    Partly Sunny

    • 34
    • 50

    Partly Sunny

Today 21 Apr Boise Mountains

Sunny. Highs 64 to 79. Breezy.

Tonight 21 Apr Boise Mountains

A slight chance of Thunderstorms. Rain Showers likely in the Evening, then rain and snow Showers after midnight. Patchy fog after midnight. Chance of precipitation 80 percent. Little or no snow accumulation. Colder with Lows 29 to 40.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Heinen Temperature Statistics

April Temperature

Boise Air Terminal (19.3 miles)

  • Lowest 17 April, 2026

    29.6 °F

  • Average April

    51.4 °F

  • Highest 6 April, 2026

    74.6 °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

    66.2 °F
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