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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

57°F

14°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 04 Oct 09:05 AM PDT
Extended Forecast for

Hillsboro OR

  • Today

    Today: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 79. Calm wind becoming north around 5 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. North northwest wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 77. Light north wind.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 84. Calm wind.
Tonight
Mostly clear, with a low around 53. Calm wind.
Monday
Mostly sunny, with a high near 79. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 53. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 77. Light north wind.
Tuesday Night
Clear, with a low around 51.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Clear, with a low around 52.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 52.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.95°W (Elev. 200 ft)
Last Update:
8:41 am PDT Oct 4, 2026
Forecast Valid:
9am PDT Oct 4, 2026-6pm PDT Oct 10, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation