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

Hazardous Weather Conditions

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

37°F

3°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 16 Oct 03:00 AM PDT
Extended Forecast for

2 Miles WSW Hillsboro OR

Frost Advisory October 16, 03:19am until October 16, 09:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory October 16, 03:19am until October 16, 09:00am

    NOW until 9:00am Thu

    Frost Advisory

  • Overnight

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 64. Calm wind.

    High: 64 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of showers before midnight, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 11am. Patchy fog between 9am and 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 64. Calm wind.

    High: 64 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. North northwest wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Rain. Low around 48. Chance of precipitation is 100%.

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain before 11am, then showers and possibly a thunderstorm after 11am. Cloudy, with a high near 59.

    High: 59 °F

    Showers

Detailed Forecast

Overnight
Clear, with a low around 38. Calm wind.
Thursday
Increasing clouds, with a high near 64. Calm wind.
Thursday Night
A slight chance of showers before midnight, then a slight chance of showers after 2am. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 20%.
Friday
A 20 percent chance of showers before 11am. Patchy fog between 9am and 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 64. Calm wind.
Friday Night
Mostly clear, with a low around 40. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64.
Saturday Night
Rain. Low around 48. Chance of precipitation is 100%.
Sunday
Rain before 11am, then showers and possibly a thunderstorm after 11am. Cloudy, with a high near 59.
Sunday Night
Showers. Mostly cloudy, with a low around 44.
Monday
A chance of showers, mainly before 11am. Partly sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A slight chance of rain. Partly sunny, with a high near 61.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A slight chance of rain. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Hillsboro OR
 45.52°N 123.01°W (Elev. 118 ft)
Last Update:
2:46 am PDT Oct 16, 2025
Forecast Valid:
3am PDT Oct 16, 2025-6pm PDT Oct 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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