Flagg Island Park Weather Forecast

    • 53
    • 77

    Decreasing Clouds

    • 55
    • 80

    Mostly Sunny

    • 54
    • 75

    Partly Sunny

    • 50
    • 72

    Partly Sunny

    • 52
    • 71

    Mostly Cloudy

    • 51
    • 70

    Mostly Cloudy

Today 19 Sep East Portland Metro

Patchy fog this morning. Mostly sunny. Highs in the upper 70s. Winds light.

Tonight 19 Sep East Portland Metro

Mostly clear. Lows in the lower 50s. Winds light in the Evening, becoming light and variable.

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  • Temperature Real-Time

Flagg Island Park Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (3.1 miles)

  • Lowest 16 September, 2026

    47.6 °F

  • Average September

    63.3 °F

  • Highest 9 September, 2026

    88.6 °F

Climate (2021–2026)

Portland, Portland-Troutdale Airport (3.1 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    65.2 °F
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