textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 1223 PM CDT Wed Sep 2 2026

- Daily low end (10-25%) rain/storm chances persist for portions of the region each day.

- Above average temperatures remain with elevated afternoon heat indices along and east of the I-35 corridor.

SHORT TERM

(Tonight through Thursday night) Issued at 1223 PM CDT Wed Sep 2 2026

Tropical Depression Edouard currently located north of the Upper Texas coast will progress north-northwest today before the low level circulation eventually dissolves in the next day. In the far northeast counties of our forecast area, some mid to high level clouds and low rain chances will be the main impacts associated with this decaying system. Any isolated showers or thunderstorms are favored mainly from the mid-afternoon into the early evening with peak heating. Guidance keeps rain totals mainly around a half an inch, though we cannot rule out an isolated downpour producing amounts over 1 inch. With the exception of gusty wind with any thunderstorms, wind will remain light today with hot temperatures from the upper 90s to around 103 degrees. Increased moisture over the area may allow some locations to see heat index values from the 105-108 degree range this afternoon as well.

Mostly clear skies are expected tonight with temperatures dropping into the 70s across the area. Thursday will be similar to today with low rain chances mainly focused in our far northeastern portion of the area including the Austin metro. Showers and a few thunderstorms may linger into Friday morning.

LONG TERM

(Friday through next Wednesday) Issued at 1223 PM CDT Wed Sep 2 2026

Increased moisture sticks around in the lower and middle levels Friday through the weekend drifting towards South Texas as mid-level ridging builds over the Southern and Central Plains through early next week. The pattern becomes a bit more disorganized/uncertain heading into the middle of next week with a possible inverted trough or shortwave moving towards the area.

Rain chances are seen Friday into next week though locations may vary day to day with no notable upper level support. The Coastal Plains will consistently have the better chances due to any seabreeze activity in the afternoon and evenings. Temperatures remain relatively steady this weekend into next week from the low 90s to around 100 degrees. Heat index values will generally be from 102 to 108 degrees, highest in the Coastal Plains and along the I-35 corridor where higher moisture resides. Lows remain in the 70s with possibly some increased cloudiness as we head towards the middle of next week.

AVIATION

(18Z TAFS) Issued at 1223 PM CDT Wed Sep 2 2026

VFR skies should prevail for DRT and AUS through the TAF periods. A small window of MVFR CIGs is allocated for SAT/SSF based on persistence and the NAM MOS output. Isolated storms are possible in the VCNTY of AUS the next couple afternoons, but the model output from most models show about 10 percent coverage at best. Thus will keep convection out until or unless we see outflow boundaries that could concentrate impacts.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 78 101 77 98 / 10 20 30 20 Austin Bergstrom Intl Airport 78 101 77 98 / 10 20 30 20 New Braunfels Muni Airport 76 100 76 98 / 10 10 20 20 Burnet Muni Airport 76 99 75 95 / 10 20 20 20 Del Rio Intl Airport 79 103 78 102 / 0 0 0 0 Georgetown Muni Airport 77 99 76 97 / 10 20 30 20 Hondo Muni Airport 75 100 74 98 / 0 0 10 0 San Marcos Muni Airport 76 100 76 98 / 10 10 20 20 La Grange - Fayette Regional 79 99 77 97 / 30 20 20 40 San Antonio Intl Airport 78 101 78 99 / 0 0 10 10 Stinson Muni Airport 78 103 78 100 / 0 0 10 10

EWX WATCHES/WARNINGS/ADVISORIES

None.