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

44°F

7°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 42°F (6°C)
Visibility 9.00 mi
Last update 14 Dec 04:53 AM PST
Extended Forecast for

Hillsboro OR

  • Overnight

    Overnight: A 20 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Sunday

    Sunday: A 50 percent chance of rain, mainly before 11am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 53. Light east southeast wind.

    High: 53 °F

    Chance Rain
    and Patchy
    Fog then
    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Rain, mainly after 7pm. Steady temperature around 49. Southeast wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Rain. High near 59. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 46. South wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain

  • Tuesday

    Tuesday: Rain. High near 57. Breezy. Chance of precipitation is 90%.

    High: 57 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain. Low around 41. Breezy. Chance of precipitation is 100%.

    Low: 41 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Cloudy, with a low around 40.

    Low: 40 °F

    Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 41. Calm wind.
Sunday
A 50 percent chance of rain, mainly before 11am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 53. Light east southeast wind.
Sunday Night
Rain, mainly after 7pm. Steady temperature around 49. Southeast wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain. High near 59. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. Low around 46. South wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 57. Breezy. Chance of precipitation is 90%.
Tuesday Night
Rain. Low around 41. Breezy. Chance of precipitation is 100%.
Wednesday
Rain. Mostly cloudy, with a high near 49.
Wednesday Night
Rain. Cloudy, with a low around 40.
Thursday
Rain. Cloudy, with a high near 51.
Thursday Night
Rain. Cloudy, with a low around 40.
Friday
Rain. Cloudy, with a high near 48.
Friday Night
Rain. Cloudy, with a low around 38.
Saturday
Rain. Cloudy, with a high near 47.
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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:
4:45 am PST Dec 14, 2025
Forecast Valid:
5am PST Dec 14, 2025-6pm PST Dec 20, 2025
 
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