TX El Paso TX/Santa Teresa NM Zone Forecast for Friday, December 15, 2017 _____ 648 FPUS54 KEPZ 161200 ZFPEPZ Zone Forecast Product for Southwest-Southcentral New Mexico-Far West Texas National Weather Service El Paso TX/Santa Teresa NM 500 AM MST Sat Dec 16 2017 TXZ418-170030- Western El Paso County- Including the cities of Downtown El Paso, West El Paso, and Upper Valley 500 AM MST Sat Dec 16 2017 .TODAY...Mostly sunny.