Texas – Warm air is already wrapping around San Antonio this morning, with a mild breeze and rising temperatures signaling a rapid shift toward early summer heat.
According to the National Weather Service, temperatures begin in the upper 60s with increasing sunshine through the morning. Skies clear quickly, pushing highs to around 88°F today as south winds strengthen.
That heat builds even further midweek. Highs climb to near 92°F by Wednesday, then hover around 91°F into Thursday. Humidity remains moderate, but the steady warmth will feel more like early summer than late March.
Drivers along I-35, Loop 410, and U.S. 281 should prepare for heat-related impacts during peak afternoon hours. Vehicles heat up quickly, and pavement temperatures can rise significantly. Keep water in your car and avoid leaving pets inside vehicles.
Overnight conditions stay mild, with lows only dropping into the mid-60s. That limits overnight cooling and keeps homes and roads warm heading into each day.
By Friday, temperatures ease slightly into the upper 80s, but dry conditions continue. No rain is expected through the period, extending a stretch of stable spring weather across San Antonio, New Braunfels, and surrounding Hill Country communities.
Looking ahead, the weekend brings slightly cooler air with highs near the low 80s, offering some relief from the midweek heat.
Stay mindful of heat exposure during the afternoon hours.
How warm is it feeling in your neighborhood across San Antonio today?
Five Day Forecast for San Antonio, Texas
Wednesday: Becoming sunny, high near 92°F
Thursday: Mostly sunny, high near 91°F
Friday: Mostly sunny, high near 90°F
Saturday: Mostly sunny, high near 81°F
Sunday: Sunny, high near 85°F
