textproduct: Austin/San Antonio

KEY MESSAGES

- Unseasonably warm through this week with new record highs possible Tuesday and Wednesday, turning cooler next weekend.

- Slight chances of showers portions of our area mid week.

- Elevated fire weather conditions Tuesday, possibly near critical Friday into next weekend.

SHORT TERM

(Tonight through Monday night) Issued at 1205 PM CST Sun Jan 4 2026

Southerly lower level flow is returning to our area with an increase in moisture expected. This will lead to low clouds and fog, some locally dense, overnight into morning hours. Later shifts will monitor and may have to issue a Dense Fog Advisory for portions of our area. Cannot rule out a few patches of light mist. The thermal ridge maintains above average temperatures. A moderate surface pressure gradient may yield breezy and gusty winds Monday afternoon across portions of the Hill Country and the I-35 corridor.

LONG TERM

(Tuesday through next Sunday) Issued at 1205 PM CST Sun Jan 4 2026

A Pacific front pushes into our area on Tuesday, then retreats back to the west on Wednesday while an enhanced lower level thermal ridge remains. This causes temperatures to soar into the 80s across most areas each afternoon. Record highs for Tuesday the 6th and Wednesday the 7th may be broken or tied. See the Climate section below for the current records.

A Pacific front moves across our area in the late Wednesday night through Thursday night time frame, then a front with some Canadian origin moves across our area later on Friday. Although a weakening lower level thermal ridge on Thursday and cold advection on Friday begin a cooling trend, temperatures remain above average. Then, as cold advection kicks in, near to perhaps below average temperatures are expected next weekend. The passage of a mid level impulse to our north and the fronts may bring some showers. Currently, the best chances, though 25% or less, continue across the Edwards Plateau, Hill Country, and Central Texas portions of the I-35 corridor Wednesday night into Thursday. However, there is a potential for chances to be added across portions of our area Thursday afternoon into night.

AVIATION

(00Z TAFS) Issued at 537 PM CST Sun Jan 4 2026

VFR flying conditions will prevail at the start of the forecast period with conditions deteriorating rapidly overnight into Monday morning to IFR/LIFR/VLIFR as lower level moisture surges over our area on S-SE flow. Clouds and fog will likely mix in helping to really reduce visibilities for most of the day tomorrow for all TAF sites. There is a possibility for under 1/2 mile visibilities due to fog and have kept TEMPOs in for this time period Monday morning. For KDRT don't have visibilities quite as low due to low confidence on how far west the fog forms. Expect a gradual return to MVFR/VFR CIGS for all TAF sites by Monday afternoon as skies clear and visibilities improve.

FIRE WEATHER

Issued at 1205 PM CST Sun Jan 4 2026

In wake of a Pacific front, minimum humidities fall into the upper teens to 20s across the Edwards Plateau and Hill Country Tuesday afternoon. However, wind speeds of less than 10 mph are expected. Thus, only locally elevated fire weather conditions are possible. In the wake of a stronger front, minimum humidities in the teens and 20s are expected across most of South Central Texas each day Friday through next Sunday. Northerly winds may become breezy and gusty with a more widespread threat of elevated to near critical fire weather conditions possible.

CLIMATE

Issued at 1205 PM CST Sun Jan 4 2026

Record High Temperatures

Tue/6th Wed/7th

AUS 84/1989 80/1978 ATT 84/1989* 80/2008* SAT 84/1989 86/1923 DRT 82/2023* 83/1923

*also earlier years

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 51 73 60 84 / 0 0 0 0 Austin Bergstrom Intl Airport 49 75 60 83 / 0 0 0 0 New Braunfels Muni Airport 49 75 58 82 / 0 0 0 0 Burnet Muni Airport 49 73 56 80 / 0 0 0 0 Del Rio Intl Airport 52 73 55 82 / 0 0 0 0 Georgetown Muni Airport 49 73 59 83 / 0 0 0 0 Hondo Muni Airport 49 73 55 83 / 0 0 0 0 San Marcos Muni Airport 49 76 59 84 / 0 0 0 0 La Grange - Fayette Regional 49 77 62 83 / 0 0 0 0 San Antonio Intl Airport 52 73 61 83 / 0 0 0 0 Stinson Muni Airport 53 76 60 83 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES

None.