Hillsboro Weather Forecast

    • 57
    • 82

    Increasing Clouds

    • 55
    • 77

    Mostly Cloudy

    • 55
    • 77

    Partly Sunny

    • 53
    • 77

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

Today 26 Aug Tualatin Valley

Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. Winds light.

Tonight 26 Aug Tualatin Valley

Partly cloudy. Lows in the mid 50s. Winds light in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hillsboro Temperature Statistics

August Temperature

Portland-Hillsboro Airport (1.9 miles)

  • Lowest 2 August, 2026

    49.6 °F

  • Average August

    69.9 °F

  • Highest 6 August, 2026

    95.6 °F

Climate (2021–2026)

Portland-Hillsboro Airport (1.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    64.4 °F
Get WillyWeather+ to remove ads