textproduct: Austin/San Antonio

KEY MESSAGES

Updated at 127 AM CDT Mon Aug 3 2026

- Area of drier air yields to the hottest ambient temperatures of the week today.

- Returning low-level moisture results in the more typical August heat, humidity, and a mostly rain free forecast through the week into next weekend.

SHORT TERM

(Today through Tuesday) Issued at 127 AM CDT Mon Aug 3 2026

Drier air persists into and through today with not much nocturnal cloud development expected into this morning. As a result, skies should remain mostly to completely clear into tonight. With the north-northeasterly mid-level flow aloft yesterday, there was some light haziness in the sky from lingering suspended smoke particles aloft coming from the fires in the Pacific Northwest and Northern Plains. The mid-level flow becomes a Little more easterly today and this would help to reduce the haziness today with a little more dispersion of the smoke with a different prevailing flow away from the source region. Under sunny conditions and the drier afternoon dew points, temperatures efficiently warm up with afternoon highs in the 100 to 103 degree range across most locations outside of the usual cooler locations over the Hill Country and Southern Edwards Plateau. As stated within last night's discussion, I will forecast above the NBM forecast highs but not as high as the MOS guidance, which has continued to show a warm bias this summer across our region. Peak heat indices with the less humid dew points should maintain near the ambient temperatures. The southeasterly low-level flow increases tonight into Tuesday off the Gulf. This will allow low-level moisture to slowly creep upwards, especially along and east of the I-35 corridor, and allow for returned development for some low clouds into Tuesday morning. Temperatures look to trend a little lower Tuesday compared to today but the heat indices will likely trend similar or slightly higher compared to today.

LONG TERM

(Tuesday night through Sunday) Issued at 127 AM CDT Mon Aug 3 2026

A persistent typical early August forecast is expected for rest of the week into the weekend. Mid-level ridging centered over the Desert Southwest elongates, allowing for a slight rise in 500 mb heights locally across our region. The low-level pattern with weak surface high pressure stretching across the gulf will maintain a light to moderate south-southeasterly off the gulf. This allows the dew points to return to what we are used to for this time of year and the typical cycle for development of low clouds each morning breaking into mostly sunny skies in the afternoon. Majority remain rain free for the period, with the exception of our southeastern coastal plain counties, where an isolated sea breeze shower and/or storm may be able to reach into during any of the afternoons from Friday into the weekend. Temperatures should trend as one would expect for the hottest time of the year featuring highs in the mid to upper 90s with higher peak heat indices up to as high as 107 degrees while the overnight lows run in the mid to upper 70s.

AVIATION

(06Z TAFS) Issued at 1222 AM CDT Mon Aug 3 2026

Little to no change to the previous forecast as VFR cigs and light and variable winds are expected through late Sunday morning. Winds shift to more southeasterly by the afternoon hours and bump up to 5-10 kts. Otherwise, clear skies and unrestricted visibility is expected.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 102 76 100 77 / 0 0 0 0 Austin Bergstrom Intl Airport 102 76 100 77 / 0 0 0 0 New Braunfels Muni Airport 101 75 99 76 / 0 0 0 0 Burnet Muni Airport 101 73 97 73 / 0 0 0 0 Del Rio Intl Airport 101 77 99 78 / 0 0 0 0 Georgetown Muni Airport 101 75 98 76 / 0 0 0 0 Hondo Muni Airport 100 75 97 75 / 0 0 0 0 San Marcos Muni Airport 101 75 99 76 / 0 0 0 0 La Grange - Fayette Regional 102 76 100 77 / 0 0 0 0 San Antonio Intl Airport 101 76 99 77 / 0 0 0 0 Stinson Muni Airport 101 77 99 77 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.