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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Overcast

61°F

16°C

Humidity 59%
Wind Speed NW 4 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Mar 06:10 PM PDT
Extended Forecast for

5 Miles S Scappoose Industrial Apk (1s4) OR

  • Tonight

    Tonight: A slight chance of rain before 8pm, then a slight chance of rain after 3am. Mostly cloudy, with a low around 47. Calm wind. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain, mainly after 7am. Mostly cloudy, with a high near 61. Light south wind.

    High: 61 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Cloudy, with a low around 50. Light south wind.

    Low: 50 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain. Mostly cloudy, with a high near 64. Calm wind becoming south around 5 mph in the afternoon.

    High: 64 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 52. Light south wind.

    Low: 52 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.

    High: 62 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain, mainly before 11am. Partly sunny, with a high near 54.

    High: 54 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain before 8pm, then a slight chance of rain after 3am. Mostly cloudy, with a low around 47. Calm wind. Chance of precipitation is 20%.
Wednesday
A 50 percent chance of rain, mainly after 7am. Mostly cloudy, with a high near 61. Light south wind.
Wednesday Night
A 30 percent chance of rain. Cloudy, with a low around 50. Light south wind.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 64. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 52. Light south wind.
Friday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
Friday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Saturday
A chance of rain, mainly before 11am. Partly sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 37.
Monday
A chance of rain. Partly sunny, with a high near 57.
Monday Night
A chance of rain. Mostly cloudy, with a low around 43.
Tuesday
Rain. Mostly cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Scappoose Industrial Apk (1s4) OR
 45.69°N 122.87°W (Elev. 171 ft)
Last Update:
5:41 pm PDT Mar 17, 2026
Forecast Valid:
6pm PDT Mar 17, 2026-6pm PDT Mar 24, 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