San Antonio started Thursday, February 26, 2026, under clear skies and is headed toward a summer-style high near 91°F. By midday, dry north to north-northwest winds will crank up, dropping humidity into the teens across parts of the Hill Country and western Bexar County. That combo turns open flames, backyard grilling and stray sparks from cigarettes into a real wildfire threat, so residents are urged to skip outdoor burning and handle anything that can throw sparks with extra care.
Afternoon Winds Pick Up
Those north to north-northwest winds will strengthen through the afternoon, with sustained speeds around 15 to 25 mph and gusts up to about 30 mph in more exposed spots. The National Weather Service Austin/San Antonio has a Red Flag Warning in place from 11 a.m. to 7 p.m. for much of the Hill Country and Rio Grande Plains, thanks to humidity tumbling into the teens. With no meaningful rain on tap through early next week, grasses and brush will stay dry, keeping fire danger elevated into the weekend.
What To Expect
Temperatures only back off slightly Friday and Saturday, with highs in the mid 80s and overnight lows holding in the low 60s. Sunday warms back into the mid to upper 80s. A weak upper level change could bring low to medium chances for showers and storms by midweek, but forecast confidence remains low through Tuesday. If you are planning to be outside, aim for mornings or evenings, keep water and shade handy and have a plan to bring pets indoors during the hottest, windiest part of the day.
Legal Implications
A county burn ban is still in effect across unincorporated areas of Bexar County, and outdoor burning is restricted. Violations can be treated as a Class C misdemeanor. For official rules and guidance, check with the Bexar County Fire Marshal. If you spot smoke or an active fire, call 911 right away and give dispatch the exact location.
