California – Fog slides over San Diego Bay this morning, muting headlights and leaving a cool glaze on early commuters’ windshields. The mist hangs low along I-5 and Harbor Drive, softening visibility and urging drivers to slow their pace. By midmorning, sunshine begins to break through, offering a warm December rebound as the region again climbs toward the upper 60s.
According to the National Weather Service, patchy fog remains the biggest travel impact through midweek. Visibility may briefly drop below a mile near the coast before clearing, and anyone heading into downtown or Lindbergh Field should allow extra drive time. Meteorologists say a quiet, stable pattern dominates the region, producing repeated foggy starts followed by rapid clearing.
Today warms quickly, reaching near 69°F, with light northwest winds around 5–10 mph. Tonight stays mild in the low 50s, and Tuesday repeats the pattern: fog before 10 a.m., then sunshine and highs near 71°F. To be fair, December rarely feels this mild, which makes these stretches popular for outdoor errands or early holiday decorations.
The warmest day arrives Wednesday as highs push toward 73°F. Models hint at a slight increase in marine moisture Wednesday night, which could restore fog along the beaches. While no rain or cold snap is expected, this early-winter setup still matters for travelers—fog can thicken quickly along coastal freeways, especially on the I-8 and I-5 corridors.
By Thursday and Friday, the region holds steady in the mid-70s with clear afternoons, offering ideal weather for shopping, walking, or seasonal clean-up ahead of Christmas travel.
Five-Day Outlook (San Diego, CA)
• Today: Fog early, then sunny. High 69.
• Tonight: Patchy fog, low 52.
• Tuesday: Fog then sunny. High 71.
• Wednesday: Fog then sunny. High 73.
• Thursday: Sunny. High 76.
• Friday: Mostly sunny. High 75.
