textproduct: Austin/San Antonio

KEY MESSAGES

- Isolated showers and storms today and Thursday, mainly over the coastal plains into the Interstate 35 corridor.

- Warming trend this week with afternoon maximum heat indices in the 100 to near 105 degree range.

- Rain chances, with some locally heavy rainfall, can be expected early next week as a cold front approaches from the north.

SHORT TERM

(Tonight through Thursday night) Issued at 134 PM CDT Wed Jun 10 2026

Similar to the last couple of days, we expect to see a continuation of low rain chances from the coastal plains northward into the Interstate 35 corridor as some showers and storms develop during the morning and afternoon hours. Coverage of convection should be a little greater over the coastal plains region given higher moisture levels with precipitable water values around 2".

Highs for today and tomorrow will be in the 90s for most locations along with afternoon heat index values of 100 to near 105 degrees along and east of I-35. Overnight lows will be in the 70s given continued southeasterly flow and overnight cloud cover.

LONG TERM

(Friday through next Wednesday) Issued at 134 PM CDT Wed Jun 10 2026

Mid and upper level high pressure continues Friday into Saturday and based on persistence, we can expect to see some isolated showers and a few thunderstorms mainly along and east of the Interstate 35 corridor. High pressure aloft will gradually ease southward on Sunday as the westerlies increases over the central and southern plains states. With high pressure weakening, rain chances will slowly increase late this weekend into early next week. Daytime highs in the 90s and humid conditions will continue to produce afternoon heat index values in the 100 to near 105 degree range into early next week for a good portion of the region.

The models continue to show good agreement and increasing confidence that a cold front will drop southward into the region late Monday afternoon into the evening hours. With the front encountering the very moist conditions (precipitable water values near or above 2"), rain chances continue to look favorable for south central Texas late Monday into early Tuesday. With plenty of moisture and lift along and behind the front, some locally heavy rainfall concerns will need to be monitored Monday into Tuesday. The increase in clouds and rain chances will begin to ease temperatures downward a bit on Monday, with a more noticeable drop with highs forecast in the 80s on Tuesday. Some low rain chances will linger into Wednesday with the tail end of a weak upper trough over the region.

AVIATION

(18Z TAFS) Issued at 1221 PM CDT Wed Jun 10 2026

VFR flight conditions will primarily trend this afternoon through this evening across the region with moderate to occasionally breezy south-southeasterly winds. Winds could gust into the 20 to 25 kt range at times. Isolated hit or miss showers and perhaps a stray storm will remain possible through early evening, but are expected to continue to favor east of the I-35 corridor, with little to no impacts to the I-35 TAF sites. Low stratus with MVFR ceilings will develop and expand across the region through the overnight into Thursday morning. Expect for ceilings then to improve to VFR levels entering Thursday afternoon. Expect for the south-southeasterly winds to slightly lower during the overnight into the early morning hours before increasing back towards the moderate to occasionally breezy levels by Thursday afternoon.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 77 94 78 94 / 20 20 0 10 Austin Bergstrom Intl Airport 77 94 77 94 / 20 20 0 10 New Braunfels Muni Airport 76 93 76 92 / 20 20 0 20 Burnet Muni Airport 76 92 76 92 / 10 10 0 10 Del Rio Intl Airport 77 97 78 96 / 0 0 0 0 Georgetown Muni Airport 77 93 77 94 / 20 20 0 10 Hondo Muni Airport 76 92 76 91 / 0 0 0 20 San Marcos Muni Airport 76 93 76 93 / 20 20 0 20 La Grange - Fayette Regional 77 94 77 93 / 20 20 10 20 San Antonio Intl Airport 77 93 77 92 / 20 20 0 20 Stinson Muni Airport 77 94 77 93 / 20 20 0 20

EWX WATCHES/WARNINGS/ADVISORIES

None.