textproduct: Austin/San Antonio

KEY MESSAGES

- Powerful cold front will bring gusty winds and significantly colder temperatures Sunday and Monday

- Freeze likely early Monday morning across portions of the area

- Significant warmup anticipated Wednesday through the remainder of the forecast.

SHORT TERM

(Today through Monday) Issued at 1212 AM CST Sun Dec 14 2025

A powerful cold front will plow through South Central Texas by daybreak Sunday, bringing with it significantly colder temperatures along with gusty north to northeasterly winds. Winds will be sustained between 15-20 mph with gusts of 25-35 mph through the day Sunday before finally relaxing as surface high pressure settles in for Sunday night into Monday morning. This will lead to wind chills in the 30s and 40s throughout the day Sunday, adding to the unpleasant factor. Temperatures will likely fall through the day as cloud cover keeps things quite cold. In coordination with neighboring offices, opted to lean heavily towards the NAM12 BC along with a blend of the NBM 50th percentile for temperatures over the next 24 hours. The NAM typically handles more shallow cold airmasses like this one quite well around this part of the country and I'd expect this front to be no different. Winter clothing will be required Sunday and perhaps through Monday before warmer temperatures slowly start to return by Tuesday. Before that though, a widespread freeze is likely Sunday night/Monday morning from the Hill Country eastward through the I-35 Corridor and into the Coastal Plains. Most locations have already received their first freeze, but portions of the Coastal Plains have not and may need a freeze warning with the forecast package Sunday afternoon.

LONG TERM

(Monday night through Saturday) Issued at 1212 AM CST Sun Dec 14 2025

Cooler temperatures continue through Tuesday before mid to late week zonal flow leads to a significant warmup Wednesday-Saturday with highs in the 70s and lower 80s. There may be a brief shot at some rain on Wednesday, but otherwise, no precipitation is expected in the long term, so dry weather is expected to persist through most of the period.

AVIATION

(12Z TAFS) Issued at 505 AM CST Sun Dec 14 2025

MVFR/patchy IFR CIGs will lift to VFR this afternoon into tonight with clouds becoming FEW-SCT in areas. Northerly winds 12 to 22 KTs with gusts up to 32 KTs will decrease to less than 10 KTs tonight.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 46 33 55 45 / 0 0 0 0 Austin Bergstrom Intl Airport 48 29 55 42 / 0 0 0 0 New Braunfels Muni Airport 49 32 55 42 / 0 0 0 0 Burnet Muni Airport 44 30 55 43 / 0 0 0 0 Del Rio Intl Airport 56 44 58 47 / 20 0 0 0 Georgetown Muni Airport 46 28 55 42 / 0 0 0 0 Hondo Muni Airport 52 35 57 43 / 0 0 0 0 San Marcos Muni Airport 48 30 55 42 / 0 0 0 0 La Grange - Fayette Regional 51 32 53 41 / 0 0 0 0 San Antonio Intl Airport 51 36 56 45 / 0 0 0 0 Stinson Muni Airport 54 37 55 46 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.