textproduct: Austin/San Antonio

KEY MESSAGES

- A freeze is likely for most of the Hill Country, southern Edwards Plateau and into the Rio Grande plains Sunday morning.

- Widespread clouds and cooler temperatures Monday and Tuesday along with a low chance for rain for most areas.

- Temperatures trend back to above normal mid to late week, with cooler temperatures toward the end of the forecast period.

UPDATE

Issued at 858 AM CST Sun Jan 11 2026

The Freeze Warning for Val Verde and Kinney Counties was allowed to expire at 9 AM CST. Temperatures are above the freezing mark and forecast to rise into the lower 60s across these areas by the afternoon.

SHORT TERM

(Today through Monday) Issued at 1204 AM CST Sun Jan 11 2026

Observations show plenty of dry air in place with dewpoints in the single digits and teens along and west of I-35, with 20s elsewhere. Surface high pressure building in from the northwest will result in decreasing winds early this morning. While we do expect to see some high clouds continue across the region, breaks in the clouds should still allow for radiational cooling. Freezing temperatures are still expected over the Hill Country, southern Edwards Plateau and into the Rio Grande plains. The Freeze Warning for Val Verde and Kinney Counties will continue as these counties have yet to see a widespread freeze this season. Otherwise, look for high level clouds to gradually increase today along with highs in the mid 50s to lower 60s. A fairly similar weather pattern is in store on Monday as an upper low currently over the central portion of the Baja peninsula moves into northern Mexico. A continued increase in mid and high level moisture along with some weak lift may aid in the development of some light rain over the Rio Grande plains late Monday.

LONG TERM

(Monday night through Saturday) Issued at 1204 AM CST Sun Jan 11 2026

The above mentioned upper low continues to approach the region Monday night into Tuesday and we should see enough moisture and lift to result in some light rain across most of south central Texas. The NBM pops look a little low and are confined too far west when compared with model QPF output from the latest operational ECMWF and GFS. While we don't expect to see any significant rainfall amounts, will increase rain chances above the NBM offering. Rain chances should decrease fairly quickly late Tuesday into Wednesday as the upper low opens into a trough and shifts east of the region Wednesday. A decrease in clouds will allow for a quick warmup for most areas on Wednesday with highs trending upward into the upper 60s and lower 70s. We do expect to see a Pacific cold front move through the region Wednesday afternoon, so may have to watch future model runs for slightly cooler temperatures in the Hill Country and southern Edwards Plateau than currently forecast.

Surface high pressure behind the Wednesday cold front does not linger too long as a surface low develops over northeast New Mexico. Southerly low-level winds keep temperatures above normal on Friday, but another cold front moving in late Friday or early Saturday drops temperatures back below normal on Saturday. Given the large scale pattern and consistent runs from the ECMWF AI model, will likely trend temperatures lower than the NBM toward the end of current forecast period.

AVIATION

(12Z TAFS) Issued at 504 AM CST Sun Jan 11 2026

VFR flying conditions today through Monday with clouds gradually lowering to around FL100. Northerly winds of 5 to 10 KTs become VRBL 5 KTs or less tonight into Monday.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 63 41 62 44 / 0 0 0 10 Austin Bergstrom Intl Airport 63 39 61 42 / 0 0 0 10 New Braunfels Muni Airport 62 41 61 43 / 0 0 0 20 Burnet Muni Airport 61 37 61 41 / 0 0 0 10 Del Rio Intl Airport 61 43 60 45 / 0 20 20 40 Georgetown Muni Airport 63 36 62 42 / 0 0 0 10 Hondo Muni Airport 63 41 61 43 / 0 0 0 20 San Marcos Muni Airport 64 39 62 43 / 0 0 0 10 La Grange - Fayette Regional 63 40 62 43 / 0 0 0 10 San Antonio Intl Airport 72 44 61 46 / 0 0 0 20 Stinson Muni Airport 63 44 61 46 / 0 0 0 20

EWX WATCHES/WARNINGS/ADVISORIES

None.