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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Partly Cloudy

48°F

9°C

Humidity 93%
Wind Speed S 3 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 10 Oct 10:15 AM PDT
Extended Forecast for

Hillsboro OR

  • Today

    Today: A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 61. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 61 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 38. Calm wind becoming northwest around 5 mph after midnight.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy frost before 7am. Otherwise, sunny, with a high near 65. Light and variable wind becoming north northeast around 6 mph in the afternoon.

    High: 65 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. North wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Patchy fog between 8am and 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.

    High: 67 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 61. Calm wind becoming northwest around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 38. Calm wind becoming northwest around 5 mph after midnight.
Sunday
Patchy frost before 7am. Otherwise, sunny, with a high near 65. Light and variable wind becoming north northeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 36. North wind around 6 mph becoming calm in the evening.
Columbus Day
Patchy fog between 8am and 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 46.
Friday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.55°N 122.96°W (Elev. 194 ft)
Last Update:
9:41 am PDT Oct 10, 2026
Forecast Valid:
10am PDT Oct 10, 2026-6pm PDT Oct 16, 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