TX Austin/San Antonio TX Zone Forecast for Saturday, December 16, 2017 _____ 468 FPUS54 KEWX 170958 ZFPEWX Zone Forecast Product for South Central Texas National Weather Service Austin/San Antonio TX 358 AM CST Sun Dec 17 2017 TXZ192-172300- Travis- Including the city of Austin 358 AM CST Sun Dec 17 2017 .TODAY...Not as cool. Cloudy in the morning then becoming partly cloudy.