Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Overcast

61°F

16°C

Humidity 67%
Wind Speed SW 8 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 Dec 03:20 PM PST
Extended Forecast for

4 Miles ENE Hillsboro OR

Flood Watch December 18, 04:00am until December 20, 04:00am
Click here for hazard details and duration
Flood Watch
  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Mostly cloudy, with a high near 60. Southwest wind around 11 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%.

    High: 60 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain after midnight.  Low around 48. South southwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 48 °F

    Chance Rain
    then Rain

  • Tuesday

    Tuesday: Rain.  High near 58. South wind 8 to 11 mph, with gusts as high as 23 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then rain after 1am.  Low around 43. Breezy, with a west southwest wind 15 to 21 mph, with gusts as high as 39 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Rain, mainly before 4pm.  High near 50. Southwest wind around 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm.  Low around 41. Chance of precipitation is 80%.

    Low: 41 °F

    Rain

  • Thursday

    Thursday: Rain.  High near 55. Chance of precipitation is 100%.

    High: 55 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Cloudy, with a low around 43.

    Low: 43 °F

    Rain

  • Friday

    Friday: Rain likely, mainly before 4pm.  Mostly cloudy, with a high near 49.

    High: 49 °F

    Rain Likely

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 60. Southwest wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tonight
A chance of rain and thunderstorms, then rain after midnight. Low around 48. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.
Tuesday
Rain. High near 58. South wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then rain after 1am. Low around 43. Breezy, with a west southwest wind 15 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Rain, mainly before 4pm. High near 50. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain, mainly after 10pm. Low around 41. Chance of precipitation is 80%.
Thursday
Rain. High near 55. Chance of precipitation is 100%.
Thursday Night
Rain. Cloudy, with a low around 43.
Friday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 49.
Friday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 38.
Saturday
Rain likely. Mostly cloudy, with a high near 47.
Saturday Night
Rain likely. Mostly cloudy, with a low around 38.
Sunday
A chance of rain. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Hillsboro OR
 45.54°N 122.86°W (Elev. 200 ft)
2:55 pm PST Dec 15, 2025
3pm PST Dec 15, 2025-6pm PST Dec 21, 2025
 
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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