Portland-Hillsboro Airport Weather Forecast

    • 52
    • 80

    Mostly Sunny

    • 51
    • 77

    Partly Sunny

    • 51
    • 81

    Mostly Sunny

    • 56
    • 75

    Chance Rain Showers

    • 52
    • 74

    Chance Rain Showers

    • 52
    • 76

    Partly Sunny

Today 17 Sep Tualatin Valley

Sunny. Highs in the lower 80s. Winds light.

Tonight 17 Sep Tualatin Valley

Mostly clear. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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Portland-Hillsboro Airport Temperature Statistics

September Temperature

Portland-Hillsboro Airport (0 miles)

  • Lowest 13 September, 2025

    48 °F

  • Average September

    67.6 °F

  • Highest 2 September, 2025

    91 °F

Climate (2020–Present)

Portland-Hillsboro Airport (0 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    53.6 °F

  • Average High 2020–2025

    64.3 °F
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