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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

45°F

7°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 12 Oct 09:53 AM PDT
Extended Forecast for

Hillsboro OR

Frost Advisory October 13, 12:00am until October 13, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Columbus Day

    Columbus Day: Sunny, with a high near 66. Calm wind.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 40. Calm wind.

    Low: 40 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Calm wind.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 71. Calm wind.

    High: 71 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 78.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Columbus Day
Sunny, with a high near 66. Calm wind.
Tonight
Increasing clouds, with a low around 40. Calm wind.
Tuesday
Mostly sunny, with a high near 66. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 71. Calm wind.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 47.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 69.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 66.
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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:
9:41 am PDT Oct 12, 2026
Forecast Valid:
10am PDT Oct 12, 2026-6pm PDT Oct 18, 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