California starts this early Sunday morning under crisp, clear skies as sunlight slowly washes over San Diego’s coastline. Pavement remains cool and dry, and the calm air signals a steady, mild stretch ahead as residents settle in after Thanksgiving travel.
According to the National Weather Service, San Diego stays sunny through Tuesday with daytime highs holding near the low to mid-70s. Light winds shift west through late morning, and commuters should expect easy travel on I-5 and Route 163 with no rain or fog impacts through the daytime hours. Pre-sunrise coolness remains the biggest factor today, so families heading out for early errands should bring a layer.
Patchy fog may develop late tonight into early Monday, especially in valleys and near coastal low spots. Visibility could dip quickly, so drivers should slow down and allow extra space on morning routes. The fog should lift by midmorning as sunshine returns.
By Tuesday, San Diego experiences a slight cooling trend with highs near 70° and continued clear skies. While no rain is expected, the broader western U.S. pattern is shifting. Meteorologists are watching a developing December cold surge that may spread across the Rockies and into the Midwest later this week. That system is expected to fuel lake-effect snow and sharp temperature drops from December 11–17 across states such as Michigan, Wisconsin, Ohio, and Pennsylvania—early signals of deeper winter arriving nationally.
For San Diego, the week stays tranquil. Expect bright afternoons, cool evenings, and ideal conditions for early holiday decorating or beach walks. Keep light jackets handy as nighttime lows dip into the low-50s.
Five-Day Outlook (Sun–Thu):
• Today: Sunny, near 70°.
• Monday: Sunny, mid-70s.
• Tuesday: Mostly clear, near 70°.
• Wednesday: Sunny, mid-70s.
• Thursday: Mostly sunny, mid-70s.
