As we step into the weekend, South Texas is set to experience some sunny, hot, and breezy weather. On Sunday, expect a mild start with temperatures in the mid-to-upper 60s. However, as the day progresses, the heat will ramp up significantly. Highs will vary across the region, reaching the upper 80s in the Hill Country and soaring into the mid-90s along and south of I-35. To add to the summer-like feel, southeasterly winds will blow at 10-15 mph, with gusts potentially hitting 30 mph, bringing in moisture from the Gulf.
Sunny, hot weekend (Copyright KSAT-12 2026 – All Rights Reserved)
As we move into Monday, temperatures will continue to be hot, but the humidity will start to rise, making it feel even warmer. Overnight lows will creep up into the upper 60s and lower 70s. You might notice the heat index rising, which is a measure of how hot it feels when humidity is factored in. There’s also a chance for isolated showers or thunderstorms, especially in areas along the Coastal Plains and the I-35 corridor, although many places will likely remain dry. Throughout the week, keep an eye out for isolated storm chances that could pop up, particularly along the Coastal Plains, as the sea breeze pushes activity inland.
Humidity returns this week (Copyright KSAT-12 2026 – All Rights Reserved)
Looking ahead to late in the week, there’s a possibility of a cold front making its way to South Texas, thanks to an upper-level disturbance. However, the exact timing and intensity of this front are still uncertain. Early in the week, expect those hot and humid conditions to persist, with isolated rain chances sprinkled in. As we approach the weekend, prepare for potential weather shifts that could change the forecast significantly.
