California’s Winter Outlook Shifts to Higher Precipitation Probability Amid Strengthening El Niño
California's winter outlook now indicates a higher probability of above-normal precipitation due to a strengthening El Niño phenomenon, according to new forecast maps from the Climate Prediction Center.

San Francisco Oakland San Jose, CA, August 20, 2026 —
New forecast maps released by the Climate Prediction Center indicate a heightened likelihood of above-normal precipitation across California this winter. This shift in the seasonal outlook is attributed to the observed strengthening of the El Niño phenomenon.
El Niño is a climate pattern characterized by the unusual warming of surface waters in the eastern tropical Pacific Ocean. This pattern often influences weather patterns globally, and for California, it has historically been associated with an increased chance of wetter winters.
The Climate Prediction Center’s updated forecasts suggest that the conditions favoring more precipitation are becoming more pronounced. While the exact extent and distribution of any potential rainfall remain subject to further forecasting, the current trend points towards a winter that could be wetter than average for the state.
The implications of increased precipitation could be significant for various sectors, including water resource management, agriculture, and wildfire risk mitigation. California has faced periods of drought in recent years, and a winter with above-normal precipitation could help replenish water supplies. However, exceptionally heavy rainfall can also lead to flooding and related hazards.
Further updates and more detailed regional forecasts are expected as the winter season progresses and forecasters continue to monitor the evolution of the El Niño pattern and its effects on atmospheric conditions across the Pacific.
Story summarized from the original created by Mark.Tamayo@fox.com (Mark Tamayo) on www.ktvu.com, see more information here.