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.

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
Click map to change the forecast location
Loading map...
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:
11:41 am PDT Apr 16, 2026
Forecast Valid:
12pm PDT Apr 16, 2026-6pm PDT Apr 22, 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