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

Portland-Hillsboro Airport (KHIO)

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

Partly Cloudy

48°F

9°C

Humidity 87%
Wind Speed SW 4 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 16 May 12:00 AM PDT
Extended Forecast for

Cedar Hills OR

  • Overnight

    Overnight: A chance of showers and thunderstorms before 3am, then a chance of rain, mainly after 5am. Mostly cloudy, with a low around 44. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers

  • Saturday

    Saturday: Rain and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 60. Southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly before 8pm. Partly cloudy, with a low around 42. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 42 °F

    Chance Rain
    then Partly
    Cloudy

  • Sunday

    Sunday: Cloudy, then becoming mostly sunny during the afternoon, with a high near 66. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 3am, then a chance of rain, mainly after 5am. Mostly cloudy, with a low around 44. Southwest wind around 6 mph. Chance of precipitation is 30%.
Saturday
Rain and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 60. Southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of rain, mainly before 8pm. Partly cloudy, with a low around 42. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Sunday
Cloudy, then becoming mostly sunny during the afternoon, with a high near 66. Calm wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 45. Northwest wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cedar Hills OR
 45.49°N 122.78°W (Elev. 364 ft)
Last Update:
11:42 pm PDT May 15, 2026
Forecast Valid:
12am PDT May 16, 2026-6pm PDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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