The most pleasant months of the year for the 78677 zip code are April, October and November. In the 78677 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for the 78677 zip code with an average high temperature of 95.9°, which ranks it as warmer than most places in Texas. Any measurable snowfall is a rare occurance in the 78677 zip code. The most uncomfortably humid months are July, June and August.