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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Partly Cloudy

66°F

19°C

Humidity 42%
Wind Speed WSW 3 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 17 Oct 03:05 PM PDT
Extended Forecast for

Hillsboro OR

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 67. North northwest wind 3 to 5 mph.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. North northwest wind around 5 mph becoming calm after midnight.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, increasing clouds, with a high near 66. Light north wind.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 62. Calm wind.

    High: 62 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, sunny, with a high near 72.

    High: 72 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 67. North northwest wind 3 to 5 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. North northwest wind around 5 mph becoming calm after midnight.
Sunday
Patchy fog before 9am. Otherwise, increasing clouds, with a high near 66. Light north wind.
Sunday Night
Mostly cloudy, with a low around 43. Calm wind.
Monday
Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 62. Calm wind.
Monday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 40.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 68.
Tuesday Night
Clear, with a low around 40.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Partly sunny, with a high near 65.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 42.
Friday
A slight chance of rain. Partly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
Last Update:
2:41 pm PDT Oct 17, 2026
Forecast Valid:
3pm PDT Oct 17, 2026-6pm PDT Oct 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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