Jacksonville woke up to a thick, gray wall of fog early Wednesday, March 4, 2026, with visibility sinking to about a quarter mile and temperatures hovering near 59°F. Drivers in low-lying neighborhoods and on bridges hit the brakes, crawling through the pre-dawn commute with hazard lights and nerves working overtime.
According to the National Weather Service in Jacksonville, a Dense Fog Advisory was issued at 2:35 a.m. and will stay in effect until 9 a.m. Wednesday. Forecasters warn that pockets of visibility at one-quarter mile or less are possible. Drivers are urged to stick with low-beam headlights, ease off the gas and leave plenty of room to stop while the advisory is in place.
Foggy Start, Warm Finish
The murk will not last all day. The fog is expected to lift by mid to late morning, clearing to mostly sunny skies and a high near 77°F. Coastal neighborhoods should stay a few degrees cooler, while inland spots warm into the upper 70s. Winds out of the east to southeast will stay light to moderate, and forecasters say another round of sea fog is possible tonight as the onshore flow keeps feeding moisture inland.
Rip Currents Crank Up at the Coast
Beachgoers will be trading fog for a different kind of hazard. A Rip Current Statement takes effect at 10 a.m. Wednesday and runs into late tonight, with dangerous rip currents expected along northeast Florida beaches. The National Weather Service urges swimmers to stay near a lifeguard stand and reminds anyone caught in a rip to float and signal for help rather than fighting the current and trying to swim straight back to shore.
Warmup Rolling In This Week
Once the fog pattern backs off, the warmth takes over. Temperatures are on track to climb through the rest of the week, with inland highs reaching into the low-to-mid 80s by Thursday and the potential for near-record readings later in the weekend. For more on how Tuesday’s fog set the stage for this warm spell, check out how Jacksonville wakes up lost in the fog.
Plan Ahead on Roads and Water
If you have to drive in the fog this morning, build in extra time, keep your headlights on low beam and pull safely off the road if visibility drops too much to drive. On the water, boaters and small-craft operators should be ready for low visibility and patchy sea fog this week. If you run into pea-soup conditions, the safest move is to delay or cut short the trip until skies and sightlines improve.
