Big Roaring River Lake Weather Forecast

    • 39
    • 58

    Becoming Sunny

    • 33
    • 55

    Rain Showers Likely

    • 22
    • 41

    Chance Rain/Snow

    • 21
    • 31

    Chance Snow Showers

    • 27
    • 40

    Chance Snow Showers

    • 23
    • 40

    Chance Snow Showers

Today 9 Oct Boise Mountains

Sunny. Highs 66 to 80.

Tonight 9 Oct Boise Mountains

Partly cloudy. A slight chance of rain Showers after midnight. Chance of rain 20 percent. Lows 38 to 53.

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  • Temperature Real-Time

Big Roaring River Lake Temperature Statistics

October Temperature

Boise Air Terminal (39.8 miles)

  • Lowest 6 October, 2025

    42.1 °F

  • Average October

    57.5 °F

  • Highest 1 October, 2025

    73 °F

Climate (2020–Present)

Boise Air Terminal (39.8 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    65.7 °F
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