Heart Lake Weather Forecast

    • 44
    • 70

    Patchy Smoke

    • 45
    • 70

    Patchy Smoke

    • 43
    • 66

    Mostly Cloudy

    • 37
    • 58

    Chance Rain Showers

    • 38
    • 57

    Chance Thunderstorms

    • 38
    • 59

    Chance Rain Showers

    • 40
    • 63

    Slight Chance Thunderstorms

Today 10 Aug Boise Mountains

Sunny. Patchy smoke. Highs 81 to 95.

Tonight 10 Aug Boise Mountains

Mostly clear. Patchy smoke. Lows 44 to 59.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

August Temperature

Boise Air Terminal (41 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 (41 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    66.2 °F
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