Grape Mountain Weather Forecast

    • 53
    • 72

    Becoming Sunny

    • 44
    • 70

    Chance Rain Showers

    • 33
    • 51

    Chance Rain/Snow

    • 35
    • 44

    Slight Chance Rain/Snow

    • 39
    • 53

    Slight Chance Rain Showers

    • 36
    • 52

    Chance Rain 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 Forecast NOAA

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Grape Mountain Temperature Statistics

October Temperature

Boise Air Terminal (23.6 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 (23.6 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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