Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Partly Cloudy

48°F

9°C

Humidity 61%
Wind Speed S 4 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 16 Apr 12:00 PM PDT
Extended Forecast for

4 Miles E North Plains OR

Frost Advisory April 17, 01:00am until April 17, 09:00am
Click here for hazard details and duration
Frost Advisory
  • This Afternoon

    This Afternoon: Partly sunny, with a high near 57. Calm wind becoming west around 5 mph.

    High: 57 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy frost after 4am.  Otherwise, partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Friday

    Friday: Areas of frost before 7am.  Otherwise, increasing clouds, with a high near 60. Calm wind.

    High: 60 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain.  Mostly cloudy, with a high near 71.

    High: 71 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: A slight chance of rain before 11pm.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of rain after 11am.  Mostly cloudy, with a high near 71.

    High: 71 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Partly sunny, with a high near 57. Calm wind becoming west around 5 mph.
Tonight
Patchy frost after 4am. Otherwise, partly cloudy, with a low around 36. West northwest wind around 6 mph becoming calm in the evening.
Friday
Areas of frost before 7am. Otherwise, increasing clouds, with a high near 60. Calm wind.
Friday Night
Mostly cloudy, with a low around 40. Calm wind.
Saturday
Partly sunny, with a high near 68. Light and variable wind.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 49.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 71.
Sunday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 48.
Monday
A slight chance of rain after 11am. Mostly cloudy, with a high near 71.
Monday Night
A chance of rain. Mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 65.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain. Mostly cloudy, with a high near 62.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E North Plains OR
 45.6°N 122.91°W (Elev. 397 ft)
11:41 am PDT Apr 16, 2026
12pm PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
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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