Bull Mountain Weather Forecast

    • 53
    • 81

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 57
    • 78

    Chance Rain

    • 55
    • 75

    Partly Sunny

    • 56
    • 78

    Partly Sunny

Today 17 Sep Tualatin Valley

Sunny. Highs in the lower 80s. Northwest wind 5 to 10 Mph.

Tonight 17 Sep Tualatin Valley

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 Mph.

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Bull Mountain Temperature Statistics

September Temperature

Portland-Hillsboro Airport (11.2 miles)

  • Lowest 15 September, 2025

    44.1 °F

  • Average September

    67 °F

  • Highest 2 September, 2025

    91 °F

Climate (2020–Present)

Portland-Hillsboro Airport (11.2 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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