Boise Weather Forecast

    • 66
    • 91

    Increasing Clouds

    • 64
    • 89

    Partly Sunny

    • 66
    • 89

    Partly Sunny

    • 64
    • 86

    Chance Rain Showers

    • 62
    • 78

    Chance Rain Showers

    • 62
    • 80

    Mostly Cloudy

    • 61
    • 78

    Chance Rain Showers

Today 2 Sep Inner Portland Metro

Sunny. Highs in the lower 90s. Winds light.

Tonight 2 Sep Inner Portland Metro

Hazy this evening. Partly cloudy. Lows in the mid 60s. Winds light.

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Boise Temperature Statistics

September Temperature

Portland, Portland International Airport (3.7 miles)

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  • Average September

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Climate (2020–Present)

Portland, Portland International Airport (3.7 miles)

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  • Average Low 2020–2025

    48.3 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.3 °F
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