Hillsboro Weather Forecast

    • 48
    • 78

    Mostly Sunny

    • 52
    • 73

    Chance Rain Showers

    • 46
    • 69

    Chance Rain Showers

    • 55
    • 79

    Mostly Sunny

    • 54
    • 89

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

Today 24 May Tualatin Valley

Sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 24 May Tualatin Valley

Mostly clear this Evening, then becoming partly cloudy. Lows in the upper 40s. Winds light this Evening, becoming light and variable.

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  • Temperature Real-Time

Hillsboro Temperature Statistics

May Temperature

Portland-Hillsboro Airport (1.9 miles)

  • Lowest 4 May, 2025

    35.6 °F

  • Average May

    54.5 °F

  • Highest 6 May, 2025

    80.6 °F

Climate (2020–Present)

Portland-Hillsboro Airport (1.9 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    64.1 °F
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