textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 533 AM CDT Sun Aug 16 2026

- Drier and hotter the next several days as upper level high pressure system stays between the Southern Plains and the Lower Mississippi Valley.

- Continued dry and hot for the extended forecast period including next weekend.

SHORT TERM

(Today through Monday) Issued at 1201 AM CDT Sun Aug 16 2026

A strong upper level high pressure system sits between the Southern Plains and the Lower Mississippi Valley resulting in drier and hotter conditions for the coming days. The air temperatures are forecast to increase several degrees on Sunday afternoon from the normal climate values (upper 90s, I-35 and Coastal Plains) while the feel-like or the apparent temperatures stay very similar or slightly above it. Can't rule out for a few places to reach Heat Advisory criteria for an hour or less along the I-35 corridor and the Coastal Plains due to the air temperature values getting to the 103 mark. Otherwise, morning clouds dissipate mid to late morning giving way to mostly sunny skies. Then, late night into the overnight hours, clouds redevelop over portions of the Coastal Plains and the I-35 corridor. Overnight lows in the 70s.

The weather pattern does not change a whole lot from Sunday and therefore, very similar weather conditions are forecast across the local area for Monday with air temperatures ranging from 99 to 102 along the I-35 corridor and Coastal Plains. Highest heat index values around 104 to 107.

LONG TERM

(Monday night through Saturday) Issued at 1201 AM CDT Sun Aug 16 2026

Continued the dry and hot conditions across South Central Texas through next weekend. The upper level high pressure system shifts to the northwest into the four corners region on Tuesday. However, we still be under its influence somewhat for the rest of the work week. By late Thursday into Friday, an upper level storm track moves across the northern part of the state of Texas while the subtropical high builds back into our area. This translates to more dry and hot weather for the latter part of the week including next weekend.

AVIATION

(12Z TAFS) Issued at 533 AM CDT Sun Aug 16 2026

Low clouds are more widespread than previously forecast therefore have included prevailing MVFR ceilings at I-35 terminals through 14- 16Z. There is higher confidence that KDRT will remain VFR as mid to high clouds remain over that area. Clouds dissipate late morning with VFR conditions then forecast the rest of the day. Breezy south to southeast wind is forecast in the west with gusts up to 25 knots at KDRT this afternoon. Redevelopment of MVFR ceilings seems likely tonight at least over some of the area.

PRELIMINARY POINT TEMPS/POPS

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

EWX WATCHES/WARNINGS/ADVISORIES

None.