San Antonio woke up Tuesday, March 24, 2026, to a soupy start, with patchy fog, temperatures near 66°F, and visibility dropping in some low-lying spots. The gray will not last long, though, as skies are expected to clear by late morning, setting up a mostly sunny afternoon with a high near 88°F as south winds kick in.
Foggy Morning, Sunny Afternoons
Localized patchy fog is expected before 10 a.m., especially near river bottoms and along the I‑35 corridor, where drivers should slow down and give themselves extra time in case they hit dense pockets. By mid to late morning, the sun should be back in charge, humidity will dip through the afternoon, and temperatures will climb into the upper 80s.
Hot Midweek, Gusty South Winds
Heat builds in a hurry Wednesday and Thursday, with highs pushing into the low 90s, around 92°F Wednesday and near 91°F Thursday. South to southeast winds of 5 to 15 mph, with gusts up to 20 to 25 mph, will keep things dry and well above what is typical for late March, according to the National Weather Service.
Fire Weather and Safety
Those gusty southerly winds teamed with low afternoon humidity bring an elevated to near‑critical fire weather threat across parts of the region through the work week. Bexar County already has an outdoor burn ban in place for unincorporated areas, so residents are urged to skip open burning, hold off on outdoor welding, and avoid parking vehicles on dry grass while the ban is active. If you spot smoke or a brush fire, call 9‑1‑1 and keep roads clear so emergency crews can get through.
Legal Implications
The county burn ban limits outdoor burning on unincorporated land and is enforced by the Fire Marshal’s office, with potential penalties for violations. Residents should review the Fire Marshal page for the full order and enforcement details before planning any outdoor fires.
Outdoor projects are best scheduled for early in the week, and burning should be avoided while the ban remains in force. A dry front may brush the area Friday with little rain expected, and a pattern change could bring more moisture and a chance of rain in the first week of April. For forecast updates and safety information, keep an eye on the National Weather Service and the county fire marshal.
