Big Rainbow Lake Weather Forecast

    • 38
    • 60

    Sunny

    • 44
    • 66

    Mostly Sunny

    • 43
    • 64

    Mostly Sunny

    • 41
    • 61

    Partly Sunny

    • 32
    • 54

    Chance Rain Showers

    • 25
    • 41

    Chance Rain/Snow

    • 24
    • 38

    Slight Chance Snow Showers

Today 22 Jun Boise Mountains

Sunny. Highs 72 to 86.

Tonight 22 Jun Boise Mountains

Clear. Lows 39 to 54.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Rainbow Lake Temperature Statistics

June Temperature

Boise Air Terminal (41 miles)

  • Lowest 11 June, 2026

    44.7 °F

  • Average June

    68.7 °F

  • Highest 16 June, 2026

    95.6 °F

Climate (2021–2026)

Boise Air Terminal (41 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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