San Diego

San Diego Braces for Cool Weather and Storms; NWS Warns of Rain, Mountain Snow, and Potential Thunderstorms

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Published on November 17, 2025
San Diego Braces for Cool Weather and Storms; NWS Warns of Rain, Mountain Snow, and Potential ThunderstormsSource: vagueonthehow from Tadcaster, York, England, CC BY 2.0, via Wikimedia Commons

San Diegans should prepare for a week ahead characterized by unseasonably cool temperatures and a medley of rain and mountain snow, as detailed in multiple reports from the National Weather Service. NWS San Diego has projected highs for today to be 5-10 degrees below the norm, with a second storm expected to deliver widespread precipitation through Wednesday, pointing to the heaviest rains this evening through early Tuesday morning and a potential for thunderstorm activity in the region.

An Area Forecast Discussion from the NWS San Diego notes isolated showers this morning, with more persistent rainfall and mountain snow above 5,000 feet expected to arrive through Tuesday evening. Isolated showers could persist into Wednesday as the weather system lingers, and snow levels are predicted to drop to 4,500-5,500 ft Monday night into Tuesday morning. However, major snow accumulations are not expected at these elevations. As the cold front moves across Southern California tonight, rain is anticipated to increase significantly, intensifying a pattern marked by unpredictable and swiftly changing conditions.

Further, San Diego is advised to watch for a third storm system that may arrive later this week, with specific details still in flux, suggesting continued unsettled weather ahead. While it remains uncertain, this system could bring additional precipitation by late Thursday or Friday, according to information from NWS San Diego, casting a shadow of unpredictability over late-week outdoor plans and commutes alike, as the city wrestles with a series of weather fronts each carving its own sporadic path across the skies.

The marine outlook is equally tumultuous, with a Small Craft Advisory in effect for coastal waters starting this afternoon and continuing through early Tuesday due to a cold front that'll stir up westerly winds this evening. Furthermore, a slight chance of thunderstorms could bring lightning and erratic gusts, creating a less-than-ideal scenario for seafarers. For beachgoers, an elevated surf of 3 to 5 feet is expected tonight and Tuesday, bringing a high risk of rip currents and a small chance of thunderstorms to the equation, adding to the list of natural elements for residents to contend with.

Residents looking for more immediate weather details can check out the 7-day forecast, which presents a closer look at the expected showers and a hint at potential thunderstorms through the week, alongside temperatures that will hover near the early 60s, temperatures well off the mark for this time of year, as if the sun itself had taken a step back from the bustling Southern California coastline.