Arnold Creek Weather Forecast

    • 52
    • 69

    Chance Rain Showers

    • 53
    • 70

    Mostly Cloudy

    • 54
    • 71

    Mostly Cloudy

    • 53
    • 72

    Partly Sunny

    • 55
    • 74

    Partly Sunny

    • 57
    • 82

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

Today 4 Sep Inner Portland Metro

Partly sunny with a 20 percent chance of Thunderstorms. Highs in the lower 70s. Winds light.

Tonight 4 Sep Inner Portland Metro

Mostly cloudy with a 20 percent chance of Showers. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arnold Creek Temperature Statistics

September Temperature

Portland, Portland International Airport (11.8 miles)

  • Lowest 2 September, 2026

    57.9 °F

  • Average September

    64.1 °F

  • Highest 1 September, 2026

    72.6 °F

Climate (2021–2026)

Portland, Portland International Airport (11.8 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.4 °F
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