textproduct: Austin/San Antonio

KEY MESSAGES

- Isolated showers and storms today and Friday, mainly over the coastal plains into the Interstate-35 corridor.

- Warm temperatures this week with afternoon maximum heat indices in the 100 to near 105 degree range.

- Rain chances, with some locally heavy rainfall, can be expected early next week as a cold front approaches from the north.

SHORT TERM

(Today through Friday) Issued at 153 AM CDT Thu Jun 11 2026

The forecast remains largely unchanged today and Friday. Low rain chances continue over the Coastal Plains into the I-35 corridor today with mainly showers in the morning and some isolated thunderstorms in the afternoon/early evening. Very similar conditions are expected for Friday, though rain chances do extend into more of South Central Texas this day. Any activity may produce some rain totals from 0.5-1 inches with any more robust thunderstorms capable of a quick 1-2 inches. Lows in the 70s with highs mainly in the 90s continue. Humid conditions persist pushing heat index values each day into the 100-105 degree range.

LONG TERM

(Friday night through Wednesday) Issued at 153 AM CDT Thu Jun 11 2026

Mid-level high pressure will be over the area Saturday. This will bring another day similar to that in the short term period of low chances for isolated showers and storms mainly along and east of I- 35. This changes as we move into Sunday as an unusually large trough over much of the US amplifies and eventually sends a front into the area Monday into Tuesday. Rain chances increase Sunday in conjunction with the weakening upper level high pressure and an uptick in moisture evident by the return of PWATs over 2 inches for most of South Central Texas. These high precipitable water values stick around into early next week and with the approaching front, the highest rain chances of the week are seen Monday and Tuesday. The potential for locally heavy rainfall will need to be monitored during this time given the moist environment. Decent rain chances linger into Wednesday, though some model disagreement starts to be seen past the initial front.

Widespread highs in the 90s continue Sunday and for the majority of the area Monday with continued triple digit heat indices up to around 105 degrees. With our front and rain chances next week, a drop in temperatures is expected by Tuesday with highs mainly in the 80s.

AVIATION

(06Z TAFS) Issued at 1219 AM CDT Thu Jun 11 2026

Our rather stagnant aviation weather pattern will continue for the next TAF period. MVFR ceilings have developed in the San Antonio area and will spread to Austin and Del Rio over the next few hours. Some guidance shows ceilings in San Antonio dropping to IFR, but chances look low and we have kept them MVFR. All terminals will rebound to VFR by around noon. Low ceilings will return late tonight.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 94 78 94 76 / 20 0 10 0 Austin Bergstrom Intl Airport 94 78 94 77 / 20 10 10 0 New Braunfels Muni Airport 93 76 92 74 / 20 0 20 0 Burnet Muni Airport 93 76 92 74 / 10 0 10 0 Del Rio Intl Airport 98 78 97 77 / 0 0 0 0 Georgetown Muni Airport 94 77 94 76 / 20 0 10 0 Hondo Muni Airport 93 77 92 75 / 0 0 20 0 San Marcos Muni Airport 94 77 93 75 / 20 10 20 0 La Grange - Fayette Regional 94 77 93 76 / 20 0 20 0 San Antonio Intl Airport 93 78 92 76 / 20 10 20 0 Stinson Muni Airport 94 77 93 76 / 20 10 20 0

EWX WATCHES/WARNINGS/ADVISORIES

None.