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.

rain,mist

46°F

8°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 46°F (8°C)
Visibility 1.50 mi
Last update 21 Mar 11:05 AM PDT
Extended Forecast for

Hillsboro OR

  • Today

    Today: Rain, mainly after 5pm. High near 52. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 9pm. Low around 37. Southwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain then
    Slight Chance
    Rain

  • Saturday

    Saturday: A 20 percent chance of showers after 11am. Partly sunny, with a high near 54. Calm wind becoming south around 5 mph in the afternoon.

    High: 54 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 44. South southeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 58. South wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers, mainly before 11am. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

Detailed Forecast

Today
Rain, mainly after 5pm. High near 52. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, mainly before 9pm. Low around 37. Southwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers after 11am. Partly sunny, with a high near 54. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 44. South southeast wind 3 to 6 mph. Chance of precipitation is 60%.
Sunday
Showers. High near 58. South wind 5 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers, mainly before 11am. Partly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
A slight chance of showers after 11pm. Mostly cloudy, with a low around 48.
Wednesday
Showers likely. Mostly cloudy, with a high near 65.
Wednesday Night
Rain. Cloudy, with a low around 44.
Thursday
Rain. Cloudy, with a high near 55.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.55°N 122.96°W (Elev. 194 ft)
Last Update:
10:46 am PDT Mar 21, 2025
Forecast Valid:
11am PDT Mar 21, 2025-6pm PDT Mar 27, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation