National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Portland-Hillsboro Airport (KHIO)

Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.

Clear

55°F

13°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 20 Aug 06:15 AM PDT
Extended Forecast for

Hillsboro OR

  • Today

    Today: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. Light and variable wind.

    Low: 58 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 84. Calm wind.

    High: 84 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers after 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 11am. Partly sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the morning.

    High: 75 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 76.

    High: 76 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 90. Calm wind.
Tonight
Increasing clouds, with a low around 58. Light and variable wind.
Friday
Mostly cloudy, with a high near 84. Calm wind.
Friday Night
A 30 percent chance of showers after 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 55. Calm wind.
Saturday
A 20 percent chance of showers before 11am. Partly sunny, with a high near 75. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.55°N 122.96°W (Elev. 194 ft)
Last Update:
5:41 am PDT Aug 20, 2026
Forecast Valid:
6am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation