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Storm Systems Continue to Impact the Pacific Northwest; Lake Effect Snow Continues

A second Pacific cold front will cross the Pacific Northwest Wednesday followed by another atmospheric river. Each of these features will bring additional periods of gusty winds, mountain snow, and heavy to excessive rainfall with renewed flooding. Heavy lake effect snow continues into Tuesday east of Lakes Erie and Ontario. Read More >

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Airport (KPDX)

Lat: 45.59578°NLon: 122.60917°WElev: 20.0ft.

Mostly Cloudy

57°F

14°C

Humidity 71%
Wind Speed SSW 8 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 15 Dec 06:20 PM PST
Extended Forecast for

2 Miles NE Lake Oswego OR

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

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain after 1am. Low around 49. South southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance
    Showers then
    Rain

  • Tuesday

    Tuesday: Rain. High near 58. South southwest wind 10 to 13 mph, with gusts as high as 24 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 44. Breezy, with a west southwest wind 16 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 44 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Rain, mainly before 4pm. High near 49. Southwest wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm. Low around 42. Southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Rain

  • Thursday

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

    High: 55 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 43. Chance of precipitation is 100%.

    Low: 43 °F

    Rain

  • Friday

    Friday: Rain. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Tonight
A chance of rain and thunderstorms, then rain after 1am. Low around 49. South southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Rain. High near 58. South southwest wind 10 to 13 mph, with gusts as high as 24 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 44. Breezy, with a west southwest wind 16 to 21 mph, with gusts as high as 41 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 49. Southwest wind 11 to 13 mph, with gusts as high as 25 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 42. Southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. High near 55. Chance of precipitation is 100%.
Thursday Night
Rain. Low around 43. Chance of precipitation is 100%.
Friday
Rain. Mostly cloudy, with a high near 48.
Friday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 39.
Saturday
Rain likely. Mostly cloudy, with a high near 47.
Saturday Night
Rain likely. Mostly cloudy, with a low around 39.
Sunday
A chance of rain. Mostly cloudy, with a high near 48.
Sunday Night
Rain likely. Mostly cloudy, with a low around 39.
Monday
Rain likely. Mostly cloudy, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Lake Oswego OR
 45.44°N 122.68°W (Elev. 200 ft)
Last Update:
5:41 pm PST Dec 15, 2025
Forecast Valid:
6pm PST Dec 15, 2025-6pm PST Dec 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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