San Antonio rolled into Saturday, June 27, under a blanket of low clouds and thick humidity, with sunrise temperatures near 78°F and dew points parked in the low 70s. By mid to late afternoon, the high is expected to reach about 94°F, while the heat index makes it feel closer to 100–102°F. Strengthening south-southeast winds will keep the air moving but also keep the warmth in place overnight, so any outdoor plans are likely to feel hotter than the numbers alone suggest.
Afternoon Heat And Gusty Winds
South-southeast winds should run around 10 to 15 mph, with frequent gusts into the mid 20s and even mid 30s at times from late morning through early evening, especially in more open areas. Tonight and Sunday night will stay muggy, with lows only dipping into the upper 70s and heat-index values hanging near 100°F even after dark. The local National Weather Service Austin/San Antonio is calling for a persistent dry, slightly-above-normal pattern and has no watches or warnings posted at this time.
Plan Outdoor Activities With Care
If you are spending time outside, this is a good weekend to front-load your plans. Hydrate often, skip or scale back strenuous exercise during the hottest stretch of the day from roughly 2 to 7 p.m., and build in extra breaks in shade or air conditioning for workers, athletes, and anyone exerting themselves. The City of San Antonio keeps an updated list of more than 60 cooling sites and other heat-safety resources for residents and people experiencing homelessness. Keep pets indoors during peak heat and never leave children or animals unattended in vehicles, even for a short errand.
What To Expect This Week
After a wetter run in early June, the pattern has flipped drier and a bit hotter, with the warm, breezy setup expected to last into early July. Highs climb into the mid 90s Monday with a peak near 96°F, then generally stay in the mid 90s through midweek. Rain chances remain low for most of the metro area. A weak disturbance could try to kick up a few isolated afternoon showers near the coastal plains from late Saturday into Sunday, but confidence in that is low. With soils drying out and winds staying gusty at times, peak heat-index values are projected to run just below formal advisory criteria for now.
Takeaway
San Antonio is in for hot afternoons, sticky nights, and a steady southeast breeze through the weekend and into early next week, so try to schedule outdoor chores and workouts for the morning or later in the evening. If you or someone you look after is especially sensitive to heat, make use of the city’s cooling resources and keep an eye on updated forecasts before heading outside.
