San Antonio is waking up to a cloudy, muggy start, with early morning temperatures near 79°F and humidity hanging in the low 80s. Skies are expected to clear into the afternoon, and the high should climb to around 95°F, with heat index readings near 100 to 101°F later today. Overnight lows will stay stuck in the mid 70s, and a mostly dry, warming pattern will push daytime highs closer to 100°F by the end of the week.
Afternoon Heat And The Week Ahead
Forecasters at the National Weather Service's Austin/San Antonio office are calling for mid to upper 90s today, followed by a steady warm up that brings several days of upper 90s to around 100°F by Thursday and Friday, according to NWS Austin/San Antonio. Southerly winds around 5 to 10 mph will keep humidity elevated, and heat index values could reach 100 to 106°F along the I-35 corridor and into the Coastal Plains. For now, officials are not expecting widespread rainfall across the local area through the coming week.
Morning Clouds And Commute Notes
Patchy low clouds or brief MVFR ceilings are possible from the pre dawn hours into mid morning before conditions improve, so it would not hurt to give yourself a little extra time on the morning commute. Afternoon travel and outdoor plans should be fine, but be ready for hot, breezy conditions with light southeast winds. There are currently no watches or warnings in effect for Bexar County.
Heat Safety And Local Resources
Heat will be the main hazard this week, so anyone doing physical work or spending long stretches outside should take frequent breaks, drink plenty of water, and watch for signs of heat illness. The City of San Antonio operates cooling sites and resilience hubs during periods of extreme heat, and residents can check the city's list for locations and hours at City of San Antonio. Keep pets out of hot cars, check on older neighbors, and consider shifting strenuous plans to the morning or evening when conditions are a bit more forgiving.
Bottom Line
Expect hot, mostly dry afternoons through the week, with heat index values frequently near or above 100°F. Plan outdoor work for the cooler hours and keep an eye out for updates if conditions change. We will post new information if the National Weather Service issues any watches or advisories.
