Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

37°F

3°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 30.38 in (1028.79 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 22 Mar 09:10 AM PDT
Extended Forecast for

Hillsboro OR

  • Today

    Today: Mostly sunny, with a high near 58. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. North northwest wind around 6 mph becoming calm  after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Areas of frost before 9am.  Otherwise, partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Areas Frost
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of showers after 11pm.  Cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Rain.  High near 56. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 11pm.  Low around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Rain then
    Chance Rain

  • Wednesday

    Wednesday: Rain.  High near 54. Chance of precipitation is 80%.

    High: 54 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm.  Snow level 2900 feet lowering to 1800 feet after midnight . Partly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 58. Calm wind becoming north 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 36. North northwest wind around 6 mph becoming calm after midnight.
Monday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 58. Calm wind.
Monday Night
A 30 percent chance of showers after 11pm. Cloudy, with a low around 45. Calm wind.
Tuesday
Rain. High near 56. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain, mainly before 11pm. Low around 40. Chance of precipitation is 80%.
Wednesday
Rain. High near 54. Chance of precipitation is 80%.
Wednesday Night
A chance of rain before 11pm. Snow level 2900 feet lowering to 1800 feet after midnight . Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 35.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
7:42 am PDT Mar 22, 2026
9am PDT Mar 22, 2026-6pm PDT Mar 28, 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