textproduct: Austin/San Antonio
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Dry weather along with above normal temperatures continue through the weekend and into early next week.
- Elevated heat index values later in the week, especially along and east of I-35 and across most of the Rio Grande plains.
SHORT TERM
(Tonight through Wednesday night) Issued at 1257 PM CDT Tue Jun 23 2026
The subtropical ridge is back over Texas. The low level flow continues to be from the southeast across South-Central Texas and the airmass over our CWA remains warm and moist with temperatures and dewpoints within a couple of degrees of where they were 24 hours ago. The subtropical ridge will strengthen over the next 24 hours and the low level flow will continue from the southeast. The upper ridge will suppress any convection. Temperatures will be steady through the short term. Lows Wednesday and Thursday will be about the same in the low to mid 70s. Highs Wednesday will be about the same as today in the 90s. Dewpoints will be a few degrees lower than the last several days and heat indices will be mostly below 100 degrees.
LONG TERM
(Thursday through next Tuesday) Issued at 1257 PM CDT Tue Jun 23 2026
The subtropical ridge will continue to dominate over the region through the rest of the week. The low level flow will also continue from the southeast. There will be little change in the weather through the long term period. Temperatures will be fairly steady through the end of the work week and good mixing will keep heat indices below advisory criteria.
AVIATION
(00Z TAFS) Issued at 623 PM CDT Tue Jun 23 2026
VFR conditions for the I-35 corridor and KDRT sites through late this evening. Then MVFR cigs develop along the I-35 terminals overnight and remain through late Wednesday morning. VFR cigs return by 16Z Wednesday. For KDRT, MVFR cigs are forecast around 12Z for a few hours before lifting to VFR. A southerly flow is forecast through the forecast period. Increasing winds and gusts are forecast across the local airports especially for KDRT in the afternoon and evening as southerly flow picks in the lower atmosphere.
PRELIMINARY POINT TEMPS/POPS
Austin Camp Mabry 76 96 74 96 / 0 0 0 0 Austin Bergstrom Intl Airport 77 95 74 96 / 0 0 0 0 New Braunfels Muni Airport 75 94 72 94 / 0 0 0 0 Burnet Muni Airport 74 94 72 93 / 0 0 0 0 Del Rio Intl Airport 77 98 75 99 / 0 0 0 0 Georgetown Muni Airport 75 95 73 95 / 0 0 0 0 Hondo Muni Airport 74 92 71 92 / 0 0 0 0 San Marcos Muni Airport 75 95 73 95 / 0 0 0 0 La Grange - Fayette Regional 76 95 73 94 / 0 0 0 0 San Antonio Intl Airport 75 93 74 93 / 0 0 0 0 Stinson Muni Airport 75 93 73 93 / 0 0 0 0
EWX WATCHES/WARNINGS/ADVISORIES
None.
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