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

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 >

Hazardous Weather Conditions

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

Lat: 45.55111°NLon: 122.40889°WElev: 36.0ft.

Overcast

61°F

16°C

Humidity 86%
Wind Speed SW 12 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Dec 02:53 PM PST
Extended Forecast for

Happy Valley 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, then showers and possibly a thunderstorm after 4pm. Steady temperature around 55. Breezy, with a southwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 55 °F

    Showers and
    Breezy

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain after 1am. Low around 48. South southwest wind around 11 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: 48 °F

    Chance
    Showers then
    Rain

  • Tuesday

    Tuesday: Rain. High near 57. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm after 7pm. Low around 42. Windy, with a west southwest wind 22 to 29 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Showers and
    Windy

  • Wednesday

    Wednesday: Rain, mainly before 4pm. High near 47. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm. Low around 41. Chance of precipitation is 90%.

    Low: 41 °F

    Rain

  • Thursday

    Thursday: Rain. High near 53. Chance of precipitation is 100%.

    High: 53 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Cloudy, with a low around 42.

    Low: 42 °F

    Rain

  • Friday

    Friday: Rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Rain

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. Steady temperature around 55. Breezy, with a southwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Tonight
A chance of rain and thunderstorms, then rain after 1am. Low around 48. South southwest wind around 11 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 57. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 25 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 after 7pm. Low around 42. Windy, with a west southwest wind 22 to 29 mph, with gusts as high as 45 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 47. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly after 10pm. Low around 41. Chance of precipitation is 90%.
Thursday
Rain. High near 53. Chance of precipitation is 100%.
Thursday Night
Rain. Cloudy, with a low around 42.
Friday
Rain. Mostly cloudy, with a high near 47.
Friday Night
Rain likely, mainly before 10pm. Snow level 2500 feet. Mostly cloudy, with a low around 38.
Saturday
Rain likely. Snow level 2600 feet. Mostly cloudy, with a high near 45.
Saturday Night
Rain likely. Mostly cloudy, with a low around 37.
Sunday
A chance of rain. Mostly cloudy, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Happy Valley OR
 45.44°N 122.52°W (Elev. 600 ft)
Last Update:
2:55 pm PST Dec 15, 2025
Forecast Valid:
3pm PST Dec 15, 2025-6pm PST Dec 21, 2025
 
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