textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1256 AM CDT Sun Aug 9 2026

- Temperatures to remain near to just above normal through the next week.

- Most areas remain dry with only a low chance for some afternoon showers near and over the Coastal Plains to I-35 corridor through Monday.

SHORT TERM

(Today through Monday) Issued at 1200 AM CDT Sun Aug 9 2026

As we remain in the same synoptic pattern and flow as the past few days, we should see today play out in a similar fashion. Another mainly dry and sunny day for most should be expected across South Central Texas with highs in the mid 90s to around 100 degrees. Heat indices in the low 100s up to around 108 degrees could be possible in the Coastal Plains. There should be a slightly better opportunity for isolated showers and perhaps a few rumbles of thunder as development may occur between the eastern Hill Country and the Coastal Plains. This could be in large part due to the Seabreeze or a combination of outflow boundaries, such has has occurred for the last previous few days. However, coverage is expected to be sparse with rain chances remaining about 15 to 20 percent at best and limited to the afternoon and early evening hours. Almost a repeat of high temperatures and rain chances should occur for our Monday as the upper ridge begins to shift slowly back towards the southeast.

LONG TERM

(Monday night through Saturday) Issued at 1200 AM CDT Sun Aug 9 2026

The upper ridge will continue to slowly drift back towards the southeast thus rain chances will eventually come to an end by Tuesday. Temperatures will continue to increase a little more each day into next week before peaking by late week. Air temperatures during this stretch are forecast to reach the 100-102 degree range for many areas every day. These higher temperatures combined with the humidity may produce Heat Advisory criteria (108 degrees or higher) for areas mainly east of I-37/I-35. The hot and mainly dry weather looks to stick around heading into next weekend. Humidity values should be a touch lower along with high temps mainly in the upper 90s so we should stay just shy of heat advisory criteria during this stretch however it will still continue to be quite hot across the area. Continue to check back for updates and remember to practice safe heat safety.

AVIATION

(06Z TAFS) Issued at 1242 AM CDT Sun Aug 9 2026

Another night of light and somewhat variable winds tonight should make it hard for overnight stratus CIGs to form. A few pockets are expected but will be handled on short notice as we watch the nighttime microphysics satellite loop. More isolated afternoon to early evening convection is expected which should mainly impact a sea-breeze gust. Surface winds should trend slightly upward in later periods according to MOS guidances, and for that, we'll bring back a stratus CIG to SAT after 06Z Monday.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 97 77 97 77 / 20 0 20 0 Austin Bergstrom Intl Airport 97 77 97 77 / 20 0 20 0 New Braunfels Muni Airport 97 76 97 76 / 20 0 20 0 Burnet Muni Airport 96 74 96 75 / 0 0 10 0 Del Rio Intl Airport 98 78 98 78 / 0 0 0 0 Georgetown Muni Airport 97 76 97 76 / 20 0 20 0 Hondo Muni Airport 96 75 96 75 / 0 0 0 0 San Marcos Muni Airport 97 76 97 76 / 20 0 20 0 La Grange - Fayette Regional 96 76 95 77 / 20 0 20 0 San Antonio Intl Airport 96 77 96 78 / 20 0 20 0 Stinson Muni Airport 98 77 98 78 / 20 0 20 0

EWX WATCHES/WARNINGS/ADVISORIES

None.