San Diego Weather Alert: Patchy Fog and Showers Could Impact Weekend Travel

San Diego, CA – San Diego residents should prepare for patchy fog and a chance of showers this weekend, with conditions expected to affect travel by Sunday night, September 22. Reduced visibility may impact Interstate 5, Interstate 8, and other major corridors late Sunday into early Monday.

Fog and Showers Expected Overnight

According to the National Weather Service, fog will form after 11 p.m. Saturday and return Sunday night, accompanied by a 30% chance of showers. Drivers are advised to slow down, use headlights, and allow extra travel time during overnight hours. Coastal routes are expected to be most affected, and commuters should plan accordingly for early Monday morning.

Weekend Forecast

Saturday will be mostly sunny after morning fog, with highs near 79°F and light northwest winds. Sunday will bring similar daytime warmth before clouds and showers move inland by nightfall. A 20% chance of precipitation continues into Monday morning, keeping the start of the workweek unsettled.

Coastal neighborhoods like La Jolla and Pacific Beach may experience the heaviest fog, while inland areas, including Escondido, are likely to remain drier. Residents are encouraged to monitor local updates and exercise caution on slippery roads during late-night and early-morning hours.

Midweek Outlook

The mild pattern continues through midweek, with highs in the upper 70s and mostly sunny afternoons once morning fog dissipates. Warnings remain in effect through Monday morning, and additional advisories may be issued if moisture deepens.

Five-Day Forecast for San Diego, CA

Saturday: Patchy fog early, then mostly sunny. High near 79°F.
Sunday: Patchy fog, chance of showers at night. High 78°F.
Monday: Slight chance of showers, morning fog, then partly sunny. High 79°F.
Tuesday: Mostly sunny after morning fog. High near 80°F.
Wednesday: Morning fog, then sunny. High near 79°F.