Thursday, April 23, 2026, started on the gray side in San Antonio, with mostly cloudy, muggy conditions, temperatures hovering around 72°F, and south-southeast winds at 5 to 10 mph. Low clouds and patchy fog have cut visibility in low-lying neighborhoods and near the escarpment, but skies are expected to thin late this morning, with an afternoon high near 85°F.
Short-Term Outlook Through Sunday
A dry, warming pattern is setting up through the rest of the week. Highs should land close to 85°F today, then climb into the upper 80s to low 90s by Friday and through the weekend. On Friday, April 24, there is a slight chance of showers or thunderstorms after about 1 p.m., mainly along and east of the I-35 corridor, and forecasters note that any storms that do pop up could become strong. The weekend looks notably hotter, with highs around 91°F on Saturday, April 25 and near 92°F on Sunday, April 26, and heat indices near or above 100°F in parts of the metro. In other words, plan on extra water and shade breaks. These trends are reflected in the National Weather Service forecast for the area, according to NWS Austin/San Antonio.
Heat Safety and City Resources
With humidity building back in and apparent temperatures climbing, residents are urged to avoid strenuous outdoor work during the hottest hours of the day and to check in on older neighbors and young children. The City of San Antonio keeps updated heat-safety guidance, lists places where people can cool off, and offers programs for those without air conditioning. For tips and cooling-site information, visit the City of San Antonio information page.
Fog, Flights and Commute Notes
This morning's low clouds and patchy fog brought MVFR ceilings and isolated IFR conditions at San Antonio International early in the day, but improvement to VFR is expected by late morning. If you are flying out, it is a good idea to check with your airline, although the afternoon looks more warm and humid than stormy for most travelers. For the latest terminal timing and aviation notes, see the NWS forecast office.
Our Earlier Update
Yesterday's update focused on dense morning fog and spotty afternoon showers, while today's report highlights the warming trend and the growing heat risk through the weekend. For background on how thick fog rolled in and storms lurked later, revisit our earlier coverage.
