San Antonio rolled into Thursday, July 2, 2026, under mostly cloudy skies and a warm start in the mid-70s, hovering near 77°F. Clouds are expected to thin out by midday, sending afternoon highs toward 93°F with south-southeast winds around 0 to 10 mph, making yardwork and other outdoor chores feel plenty toasty. Overnight lows will linger in the mid-70s, so the city will see only limited cooling once the sun goes down.
Afternoon Sizzle And Holiday Weekend Forecast
Friday, July 3, 2026, is poised to be even hotter, with a high near 94°F and heat-index values potentially reaching around 100°F. Saturday, July 4, 2026, is forecast to top out near 95°F. Most of the holiday weekend should stay dry, with rain chances remaining low until late Saturday night before creeping back into parts of the region on Sunday and Monday, according to the NWS Austin/San Antonio.
Heat Prep For July 4 Plans
If you are heading out for fireworks, grilling, or backyard gatherings, plan for mid-90s heat and only modest relief after sunset. Bring plenty of water, seek out shade when you can, and build in breaks to cool off during the hottest stretch of the afternoon. The City of San Antonio keeps an updated list of cooling locations and heat-safety tips; call 311 or review the city’s resources before you head out, per the City of San Antonio.
Sticky Nights And Slim Rain Chances
Nights will stay muggy, with lows near 75–77°F and south-southeast breezes of 5–10 mph, so there will not be much overnight relief from the heat. A slight chance of showers and thunderstorms could show up Monday evening into the night of Monday, July 6, 2026, mainly after 7 p.m. CDT, but widespread rain is not anticipated, according to the National Weather Service.
