Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra
A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >
| NWS Forecast for: Illinois Valley OR Issued by: National Weather Service Medford, OR Last Update: 7:01 pm PST Dec 23, 2025 |  |
Tonight: Showers, mainly after 9pm. Temperature rising to around 44 by 4am. North northwest wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible. Wednesday: Showers before 1pm, then showers likely after 3pm. Snow level 4700 feet lowering to 4200 feet in the afternoon . High near 50. Breezy, with a south southwest wind 18 to 23 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible. Wednesday Night: Showers. Low around 35. North wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible. Christmas Day: Showers. Snow level 5000 feet lowering to 4200 feet in the afternoon . High near 46. South wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible. Thursday Night: Showers. Snow level 3700 feet. Low around 35. South southeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible. Friday: Showers before 10am, then rain, mainly between 10am and 4pm. Snow level 3300 feet rising to 3900 feet in the afternoon. High near 45. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible. Friday Night: A 50 percent chance of rain, mainly before 10pm. Snow level 3700 feet lowering to 3200 feet after midnight . Mostly cloudy, with a low around 28. Saturday: Mostly sunny, with a high near 45. Saturday Night: Partly cloudy, with a low around 27. Sunday: Mostly sunny, with a high near 50. Sunday Night: Mostly clear, with a low around 29. Monday: Sunny, with a high near 53. Monday Night: Partly cloudy, with a low around 31. Tuesday: Sunny, with a high near 56. | |
| Illinois Valley OR 42.11°N 123.69°W (Elev. 1398 ft) | |
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