textproduct: Austin/San Antonio

KEY MESSAGES

- Hot and humid weather continues into the middle of next week with heat indices near or exceeding 100 degrees.

- Low chances (10-20 percent) for isolated severe storms late this afternoon.

SHORT TERM

(Today through Monday) Issued at 123 AM CDT Sun Apr 26 2026

Expect low clouds to fill in overnight as abundant moisture remains trapped across our area. These clouds should slowly disperse by late morning leading to partly cloudy skies and a very warm and humid day once again. Highs are likely to top out in the low 90s across the eastern half with mid to upper 90s across the western half with some areas touching 100 degrees. Additionally, it will feel oppressively humid as dewpoints will remain in the 70s to possibly mid 70s. This could result in heat index values in the 100 to 105 range for most which remains just shy of heat advisory criteria for our eastern areas.

In addition to the hot and humid weather we have a level 1 of 5 risk for severe weather across the majority of our area with the exception being out in the Coastal Plains. This is more of a conditional risk meaning if storms break the cap that will likely be over us then they could quickly become strong to severe with all hazards possible. The best and most likely time frame would be from 4pm to 8pm. Much like we have seen the past couple of days the probability of these storms breeching the cap is low however it is not zero and have kept 10-20% pops in to account for this. If storms do manage to form then they would be very isolated in nature. Bottom line most should remain dry with hot and humid conditions expected for your Sunday.

This evening will be another very warm night with many remaining in the low 70s as clouds fill back in once again overnight. Clouds should be quicker to disperse by Monday morning resulting in temperatures reaching the low to mid 90s nearly areawide. Additionally, it will remain humid and muggy pushing heat indices close to advisory criteria. As is the case for Today we could see the possibility for showers and storms to form late in the afternoon Monday but again chances remain low with most expected to remain dry.

LONG TERM

(Monday night through Saturday) Issued at 123 AM CDT Sun Apr 26 2026

Another warm night is expected for Monday night with many remaining in the low 70s as clouds fill back in overnight. Highs really ramp up by Tuesday as the heat peaks over our area with most areas in the 90s and mid 90s. Those across the Rio Grande Plains could see triple digits. Humidity will also be a factor yet again as heat indices rise close to 110 out west and 100-105 in the east. Given this early season heat, taking precautions such as limiting time outdoors or taking breaks in shade is recommended. Additionally, check on populations that may be more vulnerable to the heat.

Eventually the low that has meandered over much of the TX panhandle is forecast to finally push off to the north and east and as it does so it's expected to drag a cold front across central TX and eventually over our area by mid to late week. Models are still not in the best agreement on timing with this front. Regardless, by late week higher rain chances and cooler temperatures look to return as this cold front eventually makes it through our area, however confidence on timing remains low.

AVIATION

(12Z TAFS) Issued at 539 AM CDT Sun Apr 26 2026

Ceilings have been all over the place this morning, from VFR to IFR at times. Expect some wind shield wiper effect with back and forth IFR/MVFR at AUS, SAT, and SSF through mid to late morning. Winds will increase out of the ESE at 8-12 kts this afternoon along with VFR ceilngs. There is a low chance for -TSRA this afternoon, but not a good enough chance to include any mention in the TAFs.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 93 73 92 73 / 20 20 20 10 Austin Bergstrom Intl Airport 92 73 93 72 / 20 20 20 10 New Braunfels Muni Airport 92 71 93 72 / 10 20 20 10 Burnet Muni Airport 91 71 90 71 / 20 20 20 10 Del Rio Intl Airport 97 75 97 75 / 20 20 0 10 Georgetown Muni Airport 92 72 92 72 / 20 20 20 10 Hondo Muni Airport 94 70 95 71 / 20 20 10 10 San Marcos Muni Airport 92 72 94 72 / 10 20 20 10 La Grange - Fayette Regional 92 73 92 74 / 0 0 20 0 San Antonio Intl Airport 93 73 94 73 / 20 20 20 10 Stinson Muni Airport 94 73 95 73 / 20 20 10 10

EWX WATCHES/WARNINGS/ADVISORIES

None.