Weather
California Winter Outlook 2026-27: LA Rain, Sierra Snow Outlook
Los Angeles, CA – California could experience a wetter winter across its southern counties in 2026 27, while warmer than normal temperatures are favored across much of the state. The developing El Niñ
By Dylan Reeves · 2026-10-16T16:26:26.273Z
Los Angeles, CA – California could experience a wetter winter across its southern counties in 2026 27, while warmer than normal temperatures are favored across much of the state. The developing El Niño pattern could influence rainfall, mountain snowfall and travel conditions from Los Angeles to Sacramento.
According to the National Oceanic and Atmospheric Administration's Climate Prediction Center, seasonal outlooks issued Thursday, October 15, show increased chances of above normal precipitation across Southern California from November 2026 through January 2027.
What does NOAA predict for California this winter?
Los Angeles, Orange, Riverside and San Diego counties fall within a region favoring above normal precipitation, with probabilities generally ranging from 33% to 40%.
Farther north, including Sacramento and the San Francisco Bay Area, precipitation outlooks show equal chances of above normal, near normal or below normal totals.
Temperature projections tell a different story.
Northern California faces increased odds of above normal temperatures, while Southern California also leans warmer, although the signal is weaker.
Will California see heavy rain and mountain snow?
The wetter outlook raises the possibility of more frequent rain producing storm systems across Southern California, but it does not guarantee flooding or above average rainfall in any particular community.
Winter storms could still produce significant snowfall across the Sierra Nevada, including areas surrounding Lake Tahoe and major mountain passes.
Travelers using Interstate 5, Interstate 80 and mountain highways should remain prepared for changing winter conditions.
The National Weather Service indicates very strong El Niño conditions are highly likely to continue into winter.
El Niño can shift Pacific storm patterns and increase the likelihood of wetter conditions across Southern California.
However, NOAA emphasizes that seasonal outlooks represent probabilities rather than guarantees.
Residents should continue monitoring updated forecasts as winter approaches, particularly in areas vulnerable to flooding, mountain snow and hazardous travel.