California – A calm, cool start settles over San Diego this morning, with clear skies and damp air hanging near the coast. By midweek, umbrellas replace sunglasses as rain builds just in time for New Year’s Eve plans and year-end travel.
According to the National Weather Service, Monday stays dry and mild, with highs near 71 degrees. Clouds thicken tonight and Tuesday, signaling a pattern shift as a large national storm drives moisture into Southern California.
Rain chances increase Tuesday evening, then ramp up Wednesday. Showers become likely by afternoon, with heavier bursts possible after dark. Roads across San Diego County could turn slick quickly, especially along I-5, I-8, and Highway 163 during peak travel hours. Reduced visibility and standing water may slow commutes and holiday errands.
Wednesday night brings the greatest concern. Rain could fall heavily at times, pushing precipitation chances near 90 percent. While flooding is not guaranteed, ponding on roads and freeway ramps becomes more likely. Plan extra time if traveling for New Year’s Eve events, and avoid fast turns on wet pavement.
Rain continues into New Year’s Day Thursday, keeping conditions unsettled as 2026 begins. Highs cool into the upper 60s, and wet roads persist for return trips and coastal travel. While much of the nation faces snow, ice, and flash-freezing, San Diego’s winter risk centers on heavy rain and sudden slowdowns.
More updates may follow if rainfall intensifies. Heading out for New Year’s celebrations? Let us know how conditions look where you are.
Five Day Outlook for San Diego, California
Monday: Sunny, high near 71
Monday Night: Mostly cloudy, low near 55
Tuesday: Mostly cloudy, high near 75
Wednesday: Showers likely, high near 70
Thursday: Rain likely, high near 67
