textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 545 AM CDT Thu Sep 24 2026

- Isolated showers and thunderstorms Thursday afternoon.

- Drier with summer-like temperatures through the weekend.

- A Pacific cold front may bring widespread rain next week.

SHORT TERM

(Today through Friday) Issued at 133 AM CDT Thu Sep 24 2026

Our stagnant weather pattern remains in place tonight. Upper air analysis this evening showed a 500mb high centered over southeast TX and a large amplitude ridge stretching from there to the northern plains. The flow over TX was anticyclonic and light. At the surface the weak frontal boundary has pushed to the northeast into Central and East TX. The low level flow across our CWA is from the southeast keeping a warm (hot), moist airmass in place. The upper high will remain in place through the short term period. The frontal boundary may push back toward our CWA. There may be enough instability around the front to generate isolated showers and thunderstorms this afternoon and early evening again, but coverage looks to be less than earlier in the week. Any convection should dissipate quickly after sunset leading to a dry night. Friday it looks like the upper high will suppress any convection keeping the entire are dry. Temperatures through the period will be about the same as the last few days.

LONG TERM

(Friday night through Wednesday) Issued at 133 AM CDT Thu Sep 24 2026

The upper high will slowly shift to the south and west through the end of the week. Strong subsidence from this feature will prevent any convection Friday and Saturday. The airmass over South-Central Texas remain about the same with low level flow from the east to southeast. Temperatures will will also be stagnant through the weekend. It will feel like an endless summer rather than the start of fall. By Sunday the upper high will have shifted far enough that isolated showers and thunderstorms will return during the afternoon and early evening. This pattern will repeat Monday. Tuesday models are showing the first real front of the season moving into TX. This will bring chances for widespread rain Tuesday and Wednesday. The front will move through our CWA Tuesday night and early Wednesday. Northerly to northeasterly winds behind the front will bring cooler, drier air. Highs Wednesday will be in the 80s in the Hill Country and Southern Edwards Plateau and near 90 in the I-35 Corridor and Coastal Plains.

AVIATION

(12Z TAFS) Issued at 545 AM CDT Thu Sep 24 2026

Very little to no change to the previous forecast. Very similar to the last several days. MVFR in the morning at SAT and SSF followed by VFR in the afternoons. Winds remain mostly east-southeasterly through the day and turn calm to variable at night. Expect this to continue again through this forecast period.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 99 75 98 73 / 0 0 0 0 Austin Bergstrom Intl Airport 99 74 98 73 / 0 0 0 0 New Braunfels Muni Airport 97 73 96 72 / 0 10 0 0 Burnet Muni Airport 94 71 94 70 / 0 0 0 0 Del Rio Intl Airport 96 75 96 75 / 0 10 0 10 Georgetown Muni Airport 97 73 96 72 / 0 0 0 0 Hondo Muni Airport 94 73 95 72 / 0 10 0 0 San Marcos Muni Airport 98 73 97 72 / 0 10 0 0 La Grange - Fayette Regional 99 73 98 71 / 0 0 0 0 San Antonio Intl Airport 94 76 95 75 / 0 10 0 0 Stinson Muni Airport 95 76 96 74 / 0 10 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.