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.

Mostly Cloudy

48°F

9°C

Humidity 87%
Wind Speed WSW 5 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 22 Apr 12:00 AM PDT
Extended Forecast for

Hillsboro OR

  • Overnight

    Overnight: A slight chance of showers between 3am and 5am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 47. Light south southwest wind. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Rain, mainly before 3pm. High near 57. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. South wind 3 to 8 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63. Light south southwest wind.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers between 3am and 5am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 47. Light south southwest wind. Chance of precipitation is 20%.
Wednesday
Rain, mainly before 3pm. High near 57. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 44. South wind 3 to 8 mph.
Thursday
Partly sunny, with a high near 63. Light south southwest wind.
Thursday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 41. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 69.
Friday Night
Clear, with a low around 43.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
Last Update:
11:41 pm PDT Apr 21, 2026
Forecast Valid:
12am PDT Apr 22, 2026-6pm PDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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