California – Windshields blur under steady rain, gutters rush full, and umbrellas strain as a Pacific storm tightens its grip on Southern California. San Diego enters New Year’s Eve with heavy rain developing and travel conditions expected to worsen as 2026 begins.
According to the National Weather Service in San Diego, showers intensify today with periods of heavy rain likely later, followed by thunderstorms developing into New Year’s Day. Rainfall totals through Thursday could range from a quarter inch to locally over half an inch, with brief downpours producing ponding on roads and reduced visibility.
Across San Diego County, the heaviest impacts are expected along major travel corridors including I-5, I-8, and Highway 163, especially during evening travel. Urban streets may flood briefly where drains clog with debris. Gusty winds near storms could also knock down small branches, adding hazards for drivers and pedestrians.
Rain remains widespread into New Year’s Day, with thunder possible again during the afternoon and evening. Temperatures stay mild, topping out in the mid to upper 60s, but damp air and cloud cover will dominate. While freezing weather is not a concern locally, slick pavement will be an issue during peak travel periods.
Conditions begin to ease slightly by Friday, though scattered showers linger into the first weekend of 2026. Clouds remain stubborn, keeping roads wet and commutes slower than normal. Travelers should allow extra time, avoid flooded streets, and keep headlights on during heavier rain.
Additional advisories may be issued if storms intensify. Planning New Year’s travel or weekend plans outdoors? Tell us how conditions look where you are.
Five-Day Outlook for San Diego, California
• Today: Showers increasing, heavy rain at times; highs near 68
• New Year’s Day: Rain and thunderstorms possible; highs near 66
• Friday: Mostly cloudy, isolated showers; highs near 66
• Saturday: Chance of showers, mostly cloudy; highs near 66
• Sunday: Lingering showers possible; highs near 65
