Hillsboro Weather Forecast

    • 52
    • 76

    Decreasing Clouds

    • 46
    • 76

    Mostly Cloudy

    • 48
    • 72

    Partly Sunny

    • 49
    • 68

    Mostly Cloudy

    • 50
    • 75

    Partly Sunny

    • 50
    • 81

    Partly Sunny

    • 51
    • 80

    Partly Sunny

Today 5 May Tualatin Valley

Mostly sunny. Highs in the upper 70s.

Tonight 5 May Tualatin Valley

Partly cloudy. Lows in the lower 50s.

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Hillsboro Temperature Statistics

May Temperature

Portland-Hillsboro Airport (1.9 miles)

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  • Average May

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Climate (2021–Present)

Portland-Hillsboro Airport (1.9 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    64.6 °F
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