San Antonio is waking up to clear skies and temperatures near 76 degrees Tuesday, but the brief pre-dawn break is about as forgiving as this forecast gets. The city is headed for a mostly sunny high near 100, with heat index values reaching 103 and virtually no chance of rain.
Triple-Digit Heat Keeps Rolling
Temperatures will climb quickly through the afternoon, reaching the upper 90s by midafternoon before topping out near 100. A light south-southwest breeze of 0 to 5 mph will offer little relief, while partly cloudy skies arrive Tuesday night and temperatures fall only to around 78.
The National Weather Service expects the same pattern to continue Wednesday through Sunday, with highs near 101 each day and overnight lows between 78 and 80. Monday should remain sunny and hot near 100, while rain chances stay in the single digits throughout the stretch.
Plan Outdoor Time Early
Anyone spending time outside should get strenuous work and exercise done earlier in the day, drink water regularly and take breaks in air conditioning or shade. The City of San Antonio's hot-weather guidance includes cooling resources and reminders to check on people and pets during prolonged heat.
Evenings will stay warm, with south winds generally 5 to 10 mph and occasional gusts up to 20 mph beginning Wednesday night. No weather watches or warnings are listed for San Antonio Tuesday morning, but the combination of repeated 100-degree afternoons and warm nights will keep heat safety front and center.
