textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1255 AM CDT Mon Aug 10 2026

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

- A low chance for some afternoon showers over the Coastal Plains and I-35 Corridor Monday.

SHORT TERM

(Today through Tuesday) Issued at 1255 AM CDT Mon Aug 10 2026

The airmass across our CWA has not really changed significantly over the past 24 hours and continues to remain hot and moist. We should see today play out in a similar fashion as Sunday. Another mainly dry and sunny day for most can 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 and perhaps up into parts of the I-35 Corridor. There should be another opportunity for isolated showers and perhaps a few rumbles of thunder as development occurs between the eastern Hill Country and the Coastal Plains once again. 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. Because of these expected showers and isolated thunderstorms that may occur in the afternoon hours we are not anticipating issuing a heat advisory for today, though some areas may approach or even exceed heat advisory criteria for a few hours before said showers and storms make there way into our area.

High temperatures should be a touch warmer for Tuesday with many reaching the triple digits as the upper ridge begins to shift slowly back towards the southeast. This in turn really shuts off our diurnal rain/storm chances that we have had occur over the past several days meaning Tuesday will likely be dry for many across the area. That said Tuesday's dewpoints will need to be monitored closely as we could hit advisory criteria for areas along and east of the I-35/I-37 corridors.

LONG TERM

(Tuesday night through Sunday) Issued at 1255 AM CDT Mon Aug 10 2026

As the upper ridge continues slowly drifting towards the southeast, 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 1255 AM CDT Mon Aug 10 2026

The persistence pattern continues in regards to the wind trends over the next 24-30 hours. A small change over the past day is that higher moisture levels over the NW Gulf have been pushing inland to bring a small uptick in morning stratocu. Some lower clouds are forming now over the Coastal Prairies, and they should be pooling up over the San Antonio area by around 08Z and the AUS area by or perhaps before 10Z. Only some scattered lower clouds are expected this morning at DRT. Afternoon coverage of sea breeze assisted convection is expected to be similar to that of Sunday, and still not enough to make a timing/location projection several hours out with the coverage at or below 20 percent. The small amount of convection that does occur should once again assist the sea-breeze in advancing deep inland, possibly assisting with some gusts into DRT in the evening.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 98 77 99 77 / 20 0 0 0 Austin Bergstrom Intl Airport 98 77 100 77 / 20 0 0 0 New Braunfels Muni Airport 97 76 99 76 / 20 0 0 0 Burnet Muni Airport 96 75 97 75 / 0 0 0 0 Del Rio Intl Airport 99 78 100 78 / 0 0 0 0 Georgetown Muni Airport 97 77 98 76 / 20 0 0 0 Hondo Muni Airport 97 76 98 75 / 10 0 0 0 San Marcos Muni Airport 98 76 100 76 / 20 0 0 0 La Grange - Fayette Regional 95 77 98 77 / 20 10 10 0 San Antonio Intl Airport 97 78 99 78 / 20 0 0 0 Stinson Muni Airport 98 78 100 78 / 20 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.