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.

Overcast

54°F

12°C

Humidity 87%
Wind Speed SE 4 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 Nov 07:35 AM PST
Extended Forecast for

Hillsboro OR

  • Today

    Today: A 30 percent chance of rain, mainly before 3pm. Mostly cloudy, with a high near 58. South southeast wind around 5 mph becoming calm in the morning.

    High: 58 °F

    Chance Rain

  • Tonight

    Tonight: A slight chance of rain before 10pm, then a chance of rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%.

    Low: 46 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Rain, mainly after 10am. Areas of fog before 10am. High near 55. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: Rain. Low around 45. Light southwest wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 54. Light west northwest wind. Chance of precipitation is 70%.

    High: 54 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain before 10pm, then a slight chance of rain after 4am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.

    Low: 38 °F

    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

Detailed Forecast

Today
A 30 percent chance of rain, mainly before 3pm. Mostly cloudy, with a high near 58. South southeast wind around 5 mph becoming calm in the morning.
Tonight
A slight chance of rain before 10pm, then a chance of rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%.
Sunday
Rain, mainly after 10am. Areas of fog before 10am. High near 55. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain. Low around 45. Light southwest wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 54. Light west northwest wind. Chance of precipitation is 70%.
Monday Night
A chance of rain before 10pm, then a slight chance of rain after 4am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 50.
Wednesday Night
Rain. Mostly cloudy, with a low around 40.
Thursday
Rain likely. Mostly cloudy, with a high near 53.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 38.
Friday
A chance of rain. Partly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.55°N 122.96°W (Elev. 194 ft)
Last Update:
7:41 am PST Nov 15, 2025
Forecast Valid:
8am PST Nov 15, 2025-6pm PST Nov 21, 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