textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 100 PM CDT Sat Aug 15 2026

- Dry weather along with above normal temperatures to persist across south central Texas through this weekend and well into next week.

SHORT TERM

(Tonight through Sunday night) Issued at 100 PM CDT Sat Aug 15 2026

An upper level low is currently located just the the west of the Rio Grande with the center of this low now over Nueva Rosita Mexico. This low will continue pushing further westward toward the big bend area of TX and away from our area thus leaving us in a high and dry pattern. Additionally, the upper level ridge located over Louisiana will continue to slowly meander west northwestward towards the TX panhandle. As it does so, expect high temperatures to rise a couple degrees Sunday along with fewer morning clouds as well. Lows tonight will remain in the 70s with highs tomorrow in the upper 90s to near 100. One big noticeable change is that tomorrows heat will feel drier as we will have slightly breezy southerly winds that will help promote efficient mixing, which should allow for dew point to decrease during peak heating. While the temperatures may be a touch hotter it wont actually feel hotter and humid like it will today.

LONG TERM

(Monday through next Saturday) Issued at 100 PM CDT Sat Aug 15 2026

The upper level ridge will continue to be our dominant driving factor as it slowly drifts west northwestward. As it does temperatures will continue to increase a little more each day through the long term. In fact we could be looking at needing a heat advisory as we could see actual air temps of 103 degrees and perhaps higher for our eastern CWA. Heat indices shouldn't be too much hotter as the combination of the ridge moving closer and efficient mixing should help lower dewpoints in the lower 60s to perhaps even some upper 50s. Air temperatures during this stretch are forecast to continually reach the 100-103 degree range for many areas every day. Bottom line is that the actual air temperatures will be hotter but it won't actually feel hotter when stepping outside. However, it will still continue to be quite hot across the area so continue to check back for updates and remember to practice safe heat safety.

AVIATION

(18Z TAFS) Issued at 1221 PM CDT Sat Aug 15 2026

VFR flight conditions will continue from this afternoon through this evening under a mostly clear to partly cloudy sky. Light to moderate south-southeasterly breezes persist with the highest gusts occurring along and behind the seabreeze for the I-35 TAF sites by or just after sunset with gusts up to 25 kts across the San Antonio terminals (KSAT and KSSF). Winds then subside from the overnight into Sunday morning with the return of some low clouds. The low stratus signal is not quite as widespread as the past few mornings and looks to focus most over the western Hill Country and portions of highway 90 between San Antonio and Del Rio. Have elected to go with a TEMPO group with MVFR ceilings at KSAT and KSSF while keeping a sct low cloud groups at KAUS and KDRT. VFR conditions return by late Sunday morning for all with mostly sunny skies.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 75 100 76 101 / 0 0 0 0 Austin Bergstrom Intl Airport 75 100 75 100 / 0 0 0 0 New Braunfels Muni Airport 74 99 74 100 / 0 0 0 0 Burnet Muni Airport 71 98 72 99 / 0 0 0 0 Del Rio Intl Airport 77 99 78 100 / 0 10 0 0 Georgetown Muni Airport 74 100 75 100 / 0 0 0 0 Hondo Muni Airport 73 97 73 98 / 0 0 0 0 San Marcos Muni Airport 73 100 74 100 / 0 0 0 0 La Grange - Fayette Regional 75 100 75 100 / 0 0 0 0 San Antonio Intl Airport 75 99 76 99 / 0 0 0 0 Stinson Muni Airport 75 100 76 100 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.