San Diego drivers and beachgoers should prepare for a midweek shift as summer weather holds steady before patchy fog creeps in by Friday night, setting up a tricky start to the Labor Day weekend.
According to the National Weather Service, Wednesday will stay partly sunny with highs near 77°F and light west winds. Thursday follows with similar conditions, reaching 78°F under partly sunny skies. The first weather alert comes Friday night, when patchy fog develops along the coast and may slow traffic along I-5 and U.S. Route 101. Travelers are urged to allow extra time and use low beams if fog thickens.
By Friday afternoon, San Diego will warm to near 80°F under mostly sunny skies before conditions cool slightly overnight. The fog risk lingers into Saturday morning, with forecasters noting visibility could remain limited until late morning. Those heading to the beaches or airports should check updates before traveling.
The good news: Saturday and Sunday afternoons look seasonably pleasant, with highs near 78°F under mostly sunny skies. Nights remain mild in the upper 60s, though fog could return late. Labor Day itself brings patchy fog early, then mostly sunny skies with highs near 78°F.
Warnings remain in effect for potential low-visibility travel Friday night through Labor Day morning, but no major storms are expected.
Five-Day Forecast for San Diego, CA
- Wednesday: Partly sunny, high 77°F, west winds 5–10 mph.
- Thursday: Partly sunny, high 78°F, calm night near 70°F.
- Friday: Mostly sunny, high 80°F, patchy fog late night.
- Saturday: Morning fog, then sunny, high 78°F. Low near 69°F.
- Sunday: Patchy fog, then partly sunny, high 78°F.
- Labor Day (Monday): Early fog, then mostly sunny, high 78°F.
