Columbia River - Government Island Weather Forecast

    • 51
    • 71

    Gradual Clearing

    • 52
    • 71

    Mostly Cloudy

    • 53
    • 71

    Rain

    • 49
    • 62

    Rain Showers Likely

    • 48
    • 65

    Mostly Cloudy

    • 49
    • 64

    Slight Chance Rain

Today 22 Sep Inner Portland Metro

Mostly cloudy this Morning, then becoming mostly sunny. Highs in the lower 70s. Winds light.

Tonight 22 Sep Inner Portland Metro

Partly cloudy. Lows in the lower 50s. Winds light in the Evening, becoming light and variable.

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Columbia River - Government Island Temperature Statistics

September Temperature

Portland, Portland International Airport (5 miles)

  • Lowest 8 September, 2026

    51.7 °F

  • Average September

    64.7 °F

  • Highest 9 September, 2026

    88.6 °F

Climate (2021–2026)

Portland, Portland International Airport (5 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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