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.

Mostly Cloudy

62°F

17°C

Humidity 42%
Wind Speed ENE 10 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 11 Oct 05:53 PM PDT
Extended Forecast for

4 Miles ENE Hillsboro OR

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

  • Tonight

    Tonight: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Columbus Day

    Columbus Day: Patchy frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.

    High: 67 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Tuesday

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

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Areas of fog after 2am. Otherwise, mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Areas
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 78.

    High: 78 °F

    Areas Fog
    then Sunny

  • Thursday Night

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

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 37. Calm wind.
Columbus Day
Patchy frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Mostly sunny, with a high near 66. Calm wind.
Tuesday Night
Partly cloudy, with a low around 45. Calm wind.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Areas of fog after 2am. Otherwise, mostly clear, with a low around 48.
Thursday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 50.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 70.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 47.
Sunday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Hillsboro OR
 45.56°N 122.87°W (Elev. 200 ft)
Last Update:
5:41 pm PDT Oct 11, 2026
Forecast Valid:
6pm PDT Oct 11, 2026-6pm PDT Oct 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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