textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1239 PM CDT Sat Jun 27 2026

- Persistent dry conditions with near to slightly above normal temperatures for the rest of June into the first week of July 2026.

- Elevated heat index values each day through the extended forecast period especially along and east of I-35 corridor including the Coastal Plains and across most the Rio Grande Plains.

SHORT TERM

(Tonight through Sunday night) Issued at 1127 AM CDT Sat Jun 27 2026

Continued dry weather conditions for this weekend into early next week. Forecast highs temperatures ranging from the low to mid 90s across a good portion of South Central Texas and upper 90s to the 100 degree mark over parts of the southern Edwards Plateau and Rio Grande Plains. Elevated heat index values (100-107) are anticipated along and east of I-35 corridor including the Coastal Plains and across most the Rio Grande Plains this afternoon and Sunday afternoon.

The upper level ridge dominating the local weather for the past several days is now over the southeast coastal states. Latest steering wind mid to upper layer shows an inverted trough moving across the lower Rio Grande. This feature could bring enough Gulf moisture and instability for a few showers or storms across the Coastal Plains this afternoon. We are keeping the dry conditions intact as this scenario is a low confidence. However, there is high confidence on the heat and breezy conditions with gusts of 20 to 30 mph this afternoon and evening. Clouds develop late tonight into Sunday morning with lows in the 70s areawide.

Dry and hot for Sunday with milky skies as Saharan dust pushes over the local area. Under mostly to sunny skies, highs are forecast to range from the low to upper 90s across most locations and up to 100 for parts of the southern Edwards Plateau and Rio Grande Plains.

LONG TERM

(Monday through next Saturday) Issued at 1127 AM CDT Sat Jun 27 2026

Dry and hot weather conditions are forecast for the rest of the week. Monday is not the exception with more milky skies due to Saharan dust over the region. The upper level ridge moves into the middle Atlantic states for the extended forecast period and allows an upper level storm system to move over the southwest states. This setup could help generate storms along an active dryline over west Texas. We are not anticipating for any of this activity to impact the southern Edwards Plateau or the Rio Grande Plains. Gulf moisture seen to increase enough by Wednesday to combine with the sea breeze and maybe produce a few showers or a storm across the Coastal Plains. Similar conditions are forecast through the end of the week.

AVIATION

(18Z TAFS) Issued at 1239 PM CDT Sat Jun 27 2026

All terminals will be VFR through the afternoon and evening. Southeasterly winds will gust in the low 20s during the afternoon. MVFR ceilings will develop late this evening in the Austin and San Antonio areas. Ceilings will rebound to VFR by around noon Sunday.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 78 97 79 98 / 0 0 0 0 Austin Bergstrom Intl Airport 78 97 79 98 / 0 0 0 0 New Braunfels Muni Airport 77 95 77 96 / 0 0 0 0 Burnet Muni Airport 75 95 76 95 / 0 0 0 0 Del Rio Intl Airport 78 101 79 101 / 0 0 0 0 Georgetown Muni Airport 77 97 78 98 / 0 0 0 0 Hondo Muni Airport 76 94 76 95 / 0 0 0 0 San Marcos Muni Airport 77 96 78 97 / 0 0 0 0 La Grange - Fayette Regional 78 95 79 97 / 0 0 0 0 San Antonio Intl Airport 77 94 77 95 / 0 0 0 0 Stinson Muni Airport 77 94 78 95 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.