HAPPINESS
IS A WARM CUP
December 11, 2025 12:40 am
Southern California Overview:
- Persistent high pressure over the region will contribute to warm days with dry weather for the foreseeable future. High pressure will weaken some by the weekend, allowing for slight cooling trend with areas of low clouds and fog each morning by later this week. The area of high pressure will drift southward by early next week, continuing the warmer and drier weather pattern.
- Ongoing Atmospheric River event over the Pacific Northwest to diminish today. Arctic air surges south into the Northern Plains late today and Friday; Upper Midwest this weekend. Active lake effect snows downwind of Lakes Erie and Ontario. Fast moving low to bring moderate to heavy snows from the Mid Mississippi Valley into the Central Appalachians; Mid-Atlantic
this weekend. Much above average temperature expected from the West coast, across the Rockies, Central to Southern Plains into the Lower Mississippi Valley.