textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1202 PM CDT Wed Jul 29 2026

- Hot and dry weather is expected through the end of July.

- Rising temperatures this week may lead to increasing heat risks especially the upcoming first weekend of August 2026.

- Frontal boundary brings chances of rain Saturday night into Sunday.

SHORT TERM

(Tonight through Thursday night) Issued at 1202 PM CDT Wed Jul 29 2026

Seasonably hot temperatures, rain-free conditions, and persistent southerly to southeasterly winds will continue through the short term period across South Central Texas as the region remains under the influence of mid level ridging centered over the Texas Panhandle and New Mexico. Expect another warm and humid night tonight with lows mostly in the mid to upper 70s as stratus clouds develop once again across the region. Otherwise, areas that remain partly to mostly clear should realize low temperatures in the low 70s.

Morning stratus clouds are expected to scatter/lift by mid to late morning on Thursday, with scattered diurnal cumulus clouds through the afternoon hours. Another hot afternoon is in store across South Central Texas, with temperatures around 1-3 degrees warmer as subsidence increases. Areas along and east of the I-35 corridor may reach 100-102 degrees Thursday afternoon. Deeper afternoon mixing should result in dew points falling mostly into the 60s, which should keep heat index values below heat advisory criteria, generally ranging from 95-105 degrees west of I-35 and closer to 100-107 degrees along and east of I-35. Regardless of any heat headlines, continue to practice heat safety if spending time outdoors to prevent heat-related illnesses.

LONG TERM

(Friday through next Wednesday) Issued at 1202 PM CDT Wed Jul 29 2026

The relentless summer heat will continue through the end of July with triple-digit high temperatures as ridging aloft prevails. Heat index values are expected to be higher than earlier this week as well as humidity increases via persistent low level southerly to southeasterly flow. Heat headlines may be needed as heat index values approach 108-110 degrees Saturday afternoon, mainly along and east of the I-35 corridor.

There will be a limited opportunity for isolated to scattered showers and storms across portions of South Central Texas. The aforementioned ridge aloft is expected to shift west over the Desert Southwest, placing our region beneath northwesterly flow. This will allow for a weak frontal boundary to track across South Central Texas late this weekend. However, there are still discrepancies on the timing of this weak boundary among deterministic guidance on any convective development over the weekend, and most precipitation chances are capped at 20% or less for late Saturday afternoon and Sunday. More seasonable temperatures return Sunday and into early next week.

AVIATION

(18Z TAFS) Issued at 1202 PM CDT Wed Jul 29 2026

Sct Cu 3-6kft will prevail at all sites thru the afternoon with another period of MVFR cigs (1.5-2.5kft) likely between 08-15z Thursday. SSW to SSE winds at AUS/SAT/SSF 7-10kts and ESE/SE wind at DRT 7-10kts and low-end gusts of 15-18kts psbl.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 77 100 76 99 / 0 0 0 0 Austin Bergstrom Intl Airport 77 100 76 100 / 0 0 0 0 New Braunfels Muni Airport 75 99 74 99 / 0 0 0 0 Burnet Muni Airport 74 98 74 98 / 0 0 0 0 Del Rio Intl Airport 78 101 77 102 / 0 0 0 0 Georgetown Muni Airport 76 99 75 99 / 0 0 0 0 Hondo Muni Airport 75 99 74 99 / 0 0 0 0 San Marcos Muni Airport 76 100 75 100 / 0 0 0 0 La Grange - Fayette Regional 76 100 76 100 / 0 0 0 0 San Antonio Intl Airport 77 100 76 99 / 0 0 0 0 Stinson Muni Airport 77 100 76 99 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.