textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 124 PM CDT Sat Aug 8 2026

- Temperatures to remain near to just above normal through the next week.

- Most areas remain dry with only a low chance for some afternoon showers near and over the Coastal Plains to I-35 corridor through Monday.

SHORT TERM

(Tonight through Sunday night) Issued at 124 PM CDT Sat Aug 8 2026

Given similar synoptic flow and low-level conditions compared to the last few days, another period of isolated showers should accompany this evening's seabreeze over the Coastal Plains and eastern I-35 corridor. Most will stay dry, but a brief window of gusty winds, rain, and perhaps a few rumbles of thunder would be in store for the few experiencing a shower. Another area of showers is possible in the evening north of the Hill Country and Austin area, in tandem with an area of weak convergence aloft, but confidence in this reaching our area is lower. Tonight stays mild with lows in the 70s.

Sunday should play out similarly. It will be a dry and sunny day for most across South Central Texas with highs in the mid 90s to near 100F, with heat indices in the low 100s up to around 108F in the Coastal Plains. Z500 heights are slightly lower Sunday, so there may be a slightly better opportunity for isolated puffs of shower development between the eastern Hill Country and the Coastal Plains. This could occur both along the leading edge of the evening seabreeze and independent of the seabreeze due to the presence of a narrow filament of mid-level vorticity aloft. Still, we expect coverage to be sparse and thus rain chances are only about 15 to 20 percent at best and limited to the afternoon and early evening.

LONG TERM

(Monday through next Saturday) Issued at 124 PM CDT Sat Aug 8 2026

Hot and mostly dry summer weather should stick around for the foreseeable future. Isolated seabreeze showers remain possible each afternoon and early evening over the Coastal Plains and eastern I-35 corridor, but those chances will start to diminish as ridging intensifies over our area during the week. Warmer mid-level air associated with this strengthened ridging is expected to arrive around Tuesday and suppress opportunities for rain from then onward.

Daytime highs are forecast to inch up some as the warmest of this air expands across South Central Texas mid to late week. Ambient temperatures during this stretch are forecast to reach the 100-102F range for many areas each day. Apparent temperatures with Gulf moisture staying in place could necessitate Heat Advisories later in the week as values above 108F are possible across areas mainly east of I-37/I-35. The outlook for the upcoming weekend and through mid August looks quite dry and hot at this range without much indication in ensemble guidance that ridging will move out of the area.

AVIATION

(18Z TAFS) Issued at 1221 PM CDT Sat Aug 8 2026

VFR conditions are expected through the afternoon and evening with FEW-SCT cu field. Patchy stratus producing MVFR ceilings will be possible again early Sunday morning, 10Z-14Z, near BAZ-SAT-HDO. We do expected another round of isolated SHRA and TSRA activity 21Z-03Z across the Coastal Plains and into portions of the I-35 corridor and eastern Hill Country. Given the low coverage and low confidence in placement, no mention has been included in the I-35 corridor TAFs at the moment, but amendments could be required late afternoon and evening. Gusty winds will be possible behind outflow boundaries that are produced by any SHRA/TSRA activity.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 76 97 77 97 / 10 10 0 0 Austin Bergstrom Intl Airport 76 97 76 97 / 20 10 0 10 New Braunfels Muni Airport 75 97 75 97 / 20 10 10 10 Burnet Muni Airport 74 95 74 95 / 10 0 0 0 Del Rio Intl Airport 77 98 77 98 / 0 0 0 0 Georgetown Muni Airport 75 97 75 96 / 10 10 0 0 Hondo Muni Airport 73 95 74 96 / 10 0 0 0 San Marcos Muni Airport 75 97 76 97 / 20 10 0 10 La Grange - Fayette Regional 76 96 76 96 / 10 20 0 10 San Antonio Intl Airport 76 96 77 96 / 20 10 0 0 Stinson Muni Airport 76 97 77 98 / 20 10 10 0

EWX WATCHES/WARNINGS/ADVISORIES

None.