textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1245 PM CDT Sun Aug 9 2026

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

- A low chance for some afternoon showers over the Coastal Plains and I-35 Corridor Monday.

SHORT TERM

(Tonight through Monday night) Issued at 1245 PM CDT Sun Aug 9 2026

The subtropical ridge is centered over the Four Corners area this afternoon. There is weak anticyclonic flow over Texas. The low level flow continues to be from the southeast to south across South-Central Texas. The airmass across our CWA has not changed significantly over the last 24 hours and is hot and moist. There is a trough of low pressure over the western Gulf that is generating scattered showers and thunderstorms. The upper pattern will begin a gradual change during the short term. There will be an initial weakening of the ridge tonight and Monday associated with the trough over the Gulf. Any convection today will have ended by the start of this period. Leaving another seasonably warm night. As the Gulf trough moves over the coast, we should see isolated showers and thunderstorms over the Coastal Plains and I-35 Corridor during the afternoon. High temperatures will be about the same as today. Tomorrow night will be nearly the same as tonight.

LONG TERM

(Tuesday through next Sunday) Issued at 1245 PM CDT Sun Aug 9 2026

The subtropical ridge will continue its slow transition to the east eventually settling over the northern Gulf coast. This will lead to stronger subsidence and less convection in the long term. It will also likely produce temperatures a few degrees higher in the middle of the week. The NBM has been consistently forecasting higher dewpoints over the Coastal Plains in the long term and if this verifies it will mean Heat Advisory heat indices. However, the trend has been for the dewpoint forecast to come in lower as it moves into the short term. We'll have to see if this continues.

AVIATION

(18Z TAFS) Issued at 1222 PM CDT Sun Aug 9 2026

VFR conditions have returned to the region. Expect another period of slightly stronger southeast flow at the I-35 terminals after 21Z with the seabreeze. Isolated SHRA is expected with the seabreeze, but the forecast coverage is too low to mention in the 18Z TAFs. MVFR CIGs return tonight with highest confidence at KSAT. KSSF and KAUS may be on the fringes of these CIGs.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 76 96 77 98 / 0 20 0 0 Austin Bergstrom Intl Airport 76 96 77 99 / 0 20 0 0 New Braunfels Muni Airport 75 96 76 98 / 10 20 0 0 Burnet Muni Airport 74 95 75 96 / 10 10 0 0 Del Rio Intl Airport 77 98 78 99 / 0 0 0 0 Georgetown Muni Airport 75 95 76 97 / 10 10 0 0 Hondo Muni Airport 74 95 75 98 / 0 10 0 0 San Marcos Muni Airport 75 96 76 99 / 10 20 0 0 La Grange - Fayette Regional 76 94 77 97 / 0 20 10 0 San Antonio Intl Airport 77 96 77 98 / 10 20 0 0 Stinson Muni Airport 77 97 77 100 / 10 20 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.