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

46°F

8°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 15 Oct 09:20 PM PDT
Extended Forecast for

4 Miles E North Plains OR

Frost Advisory October 16, 01:00am until October 16, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog between 8am and 9am. Otherwise, increasing clouds, with a high near 61. Calm wind.

    High: 61 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain before 11am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 41. Light north wind.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: A 20 percent chance of rain after 11am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Saturday Night

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

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain. Cloudy, with a high near 59.

    High: 59 °F

    Rain

  • Sunday Night

    Sunday Night: Showers, mainly before 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 39. Calm wind.
Thursday
Patchy fog between 8am and 9am. Otherwise, increasing clouds, with a high near 61. Calm wind.
Thursday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 47. Calm wind.
Friday
A 20 percent chance of rain before 11am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 64. Light and variable wind.
Friday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 41. Light north wind.
Saturday
A 20 percent chance of rain after 11am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63.
Saturday Night
Rain. Low around 48. Chance of precipitation is 100%.
Sunday
Rain. Cloudy, with a high near 59.
Sunday Night
Showers, mainly before 11pm. Mostly cloudy, with a low around 44.
Monday
A chance of showers, mainly before 11am. Partly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A chance of showers. Partly sunny, with a high near 60.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 44.
Wednesday
A chance of showers. Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E North Plains OR
 45.6°N 122.91°W (Elev. 397 ft)
Last Update:
9:21 pm PDT Oct 15, 2025
Forecast Valid:
9pm PDT Oct 15, 2025-6pm PDT Oct 22, 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