textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 130 AM CDT Wed Jul 8 2026

- Lowering rain chances Wednesday and Thursday, but increasing again Friday through at least the weekend.

- Daytime heat mainly in the 90s continues into next week with heat index values reaching into the 100-105 range for many areas.

SHORT TERM

(Today through Thursday) Issued at 130 AM CDT Wed Jul 8 2026

A weak shear axis over TX is connecting two synoptic scale lows, one to the SW over Mexico and the other to the NE over the mid Mississippi valley. These two anchors are pulling opposite each other, but there was still enough shear and pooled moisture to give pretty good coverage of rainfall, especially over areas S of Highway 90. This looks to be a slight over achievement versus what was expected, and this has us looking at a few stray coastal showers or storms in the daytime for Wednesday despite low PoPs by the majority of solutions. We still saw a good bit of heating and temperatures were mostly in line with projections despite the added cloud cover. Therefore, we should still expect a healthy dose of summer heat for today, regardless of whether the skies get cloud-filled or not.

Thursday will also reflect the steady hot days with not enough shear aloft to generate significant rain chances. But thanks to the overachieving rain events over the spring and so far this summer, the summer heat has mostly been curbed by weakly dominant subtropical ridging over TX and enough moisture in the soil and vegetation to keep most areas away from those triple digits. The apparent temperature isn't holding back, and there continue to be daily areas getting into the 100s up to 105.

LONG TERM

(Thursday night through Tuesday) Issued at 130 AM CDT Wed Jul 8 2026

Friday starts the transition to increasing moisture as a disturbance/inverted trough over the southwestern Gulf lifts northward and brings a good chance for showers and storms back into the picture for the weekend. PWATs will surge into the 2-2.25" range at times this weekend, and some of the models are showing a pretty active area over the eastern half Friday afternoon. Despite the added moisture, the summer heat isn't expected to pull back much, but perhaps the ambient temps might dip a few degrees. Model timing has been inconsistent, leading to some related inconsistency in the model blends. Given that this moisture could be enough to trigger new activity at most if not all hours of the day, we'll mainly favor 30 to 50 type PoPs this weekend, and hopefully get better timing signals as more hi res and rapid refresh model data comes into the picture. Going into the work week the upper ridge strengthens, but is centered well north of TX. Thus we could wind up with multiple days of tropical rain chances or at least some air-mass daytime convection going into the middle of the week. Daytime highs remain on a plateau with most areas seeing low to mid 90s.

AVIATION

(06Z TAFS) Issued at 130 AM CDT Wed Jul 8 2026

Monitoring a cluster of rain and storm activity in the Rio Grande Plains that is lifting northward but this cluster is expected to weaken over the next few hours with no impacts across the TAF sites. Otherwise, skies are beginning mostly clear but few to bkn low clouds develop later overnight into this morning. Some MVFR ceilings could develop at the San Antonio terminals (KSAT and KSSF), otherwise looks to remain VFR at KAUS and KDRT. VFR flight conditions return to all sites by mid-morning and mainly remain through the end of the TAF period. Light to moderate winds are expected, primarily coming out of the south and/or southeast. Highest gusts could reach into the 20 to 25 kt range.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 97 76 97 76 / 10 0 0 0 Austin Bergstrom Intl Airport 97 76 96 77 / 10 10 0 0 New Braunfels Muni Airport 96 74 96 75 / 10 10 0 0 Burnet Muni Airport 96 74 95 73 / 10 0 0 0 Del Rio Intl Airport 96 76 97 76 / 10 0 0 0 Georgetown Muni Airport 97 77 97 76 / 10 0 0 0 Hondo Muni Airport 94 73 94 74 / 10 10 0 0 San Marcos Muni Airport 96 74 96 75 / 10 10 0 0 La Grange - Fayette Regional 97 76 97 77 / 10 10 10 0 San Antonio Intl Airport 94 75 94 76 / 10 10 0 0 Stinson Muni Airport 95 75 95 76 / 10 10 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.