Prolonged Atmospheric River Will Impact the Northwest Early this Week
A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >
| NWS Forecast for: Portland OR Issued by: National Weather Service Portland, OR Last Update: 8:41 pm PST Dec 7, 2025 |  |
Tonight: Showers likely, mainly after 3am. Mostly cloudy, with a low around 50. South wind around 6 mph. Chance of precipitation is 70%. Monday: Showers before 10am, then rain, mainly after 10am. High near 57. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible. Monday Night: Rain. Low around 48. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible. Tuesday: Rain. High near 57. East northeast wind around 6 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible. Tuesday Night: Rain. Low around 51. Breezy, with a south southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible. Wednesday: Rain. High near 58. Chance of precipitation is 100%. Wednesday Night: Rain. Low around 53. Chance of precipitation is 90%. Thursday: Rain likely, mainly before 4pm. Cloudy, with a high near 58. Thursday Night: A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 51. Friday: A slight chance of rain before 4pm. Mostly cloudy, with a high near 58. Friday Night: A slight chance of rain. Mostly cloudy, with a low around 48. Saturday: A chance of rain. Mostly cloudy, with a high near 55. Saturday Night: Rain likely. Mostly cloudy, with a low around 47. Sunday: A chance of rain. Mostly cloudy, with a high near 54. | |
| Portland OR 45.52°N 122.7°W (Elev. 203 ft) | |
Visit your local NWS office at: https://www.weather.gov/pqr |
