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

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into New Year's Day. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

30°F

-1°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 30 Dec 11:35 PM PST
Extended Forecast for

3 Miles E Hillsboro OR

  • Tonight

    Tonight: Widespread frost, mainly after 1am. Otherwise, mostly clear, with a steady temperature around 35. Calm wind.

    Low: 35 °F

    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Frost then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 1am. Otherwise, increasing clouds, with a low around 32. Calm wind.

    Low: 32 °F

    Frost

  • New Year's Day

    New Year's Day: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 45. Calm wind. Chance of precipitation is 60%.

    High: 45 °F

    Slight Chance
    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain. Low around 39. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain. High near 49. Chance of precipitation is 80%.

    High: 49 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 41. Chance of precipitation is 80%.

    Low: 41 °F

    Rain

  • Saturday

    Saturday: Rain. Mostly cloudy, with a high near 51.

    High: 51 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain

Detailed Forecast

Tonight
Widespread frost, mainly after 1am. Otherwise, mostly clear, with a steady temperature around 35. Calm wind.
Wednesday
Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 48. Calm wind.
Wednesday Night
Widespread frost, mainly after 1am. Otherwise, increasing clouds, with a low around 32. Calm wind.
New Year's Day
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 45. Calm wind. Chance of precipitation is 60%.
Thursday Night
Rain. Low around 39. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 49. Chance of precipitation is 80%.
Friday Night
Rain. Low around 41. Chance of precipitation is 80%.
Saturday
Rain. Mostly cloudy, with a high near 51.
Saturday Night
Rain. Mostly cloudy, with a low around 42.
Sunday
Rain likely. Mostly cloudy, with a high near 50.
Sunday Night
Rain likely. Mostly cloudy, with a low around 40.
Monday
A chance of rain. Mostly cloudy, with a high near 50.
Monday Night
A chance of rain. Mostly cloudy, with a low around 38.
Tuesday
A chance of rain. Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Hillsboro OR
 45.52°N 122.85°W (Elev. 200 ft)
Last Update:
11:41 pm PST Dec 30, 2025
Forecast Valid:
11pm PST Dec 30, 2025-6pm PST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation