Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas
A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >
| NWS Forecast for: 3 Miles NW Sisters OR Issued by: National Weather Service Pendleton, OR Last Update: 10:56 am PST Dec 24, 2025 |  |
This Afternoon: Rain likely before 1pm. Mostly sunny, with a temperature falling to around 38 by 5pm. Southwest wind 16 to 18 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible. Tonight: A chance of rain and snow after 1am. Patchy fog after 4am. Snow level 4200 feet lowering to 3700 feet after midnight . Otherwise, increasing clouds, with a low around 26. Light northwest wind. Chance of precipitation is 50%. Little or no snow accumulation expected. Christmas Day: A chance of rain and snow before 10am, then rain likely. Patchy fog before 10am. Snow level 3900 feet rising to 4700 feet in the afternoon. Otherwise, partly sunny, with a high near 46. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected. Thursday Night: A chance of rain before 10pm, then a chance of rain and snow between 10pm and 1am, then snow likely after 1am. Snow level 3800 feet. Mostly cloudy, with a low around 25. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible. Friday: Snow likely, possibly mixed with rain, mainly before 4pm. Snow level 3400 feet. Mostly sunny, with a high near 42. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible. Friday Night: A 40 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 23. Saturday: Mostly sunny, with a high near 39. Saturday Night: Partly cloudy, with a low around 20. Sunday: Mostly sunny, with a high near 43. Sunday Night: Partly cloudy, with a low around 22. Monday: Mostly sunny, with a high near 45. Monday Night: Mostly clear, with a low around 23. Tuesday: Sunny, with a high near 46. | |
| 3 Miles NW Sisters OR 44.33°N 121.59°W (Elev. 3251 ft) | |
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