If you planning to travel to Six Flags Fiesta Texas, San Antonio, Texas, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 1:29 PM. The temperature feels like 51.8 with a humidity level of 64 so dress accordingly. Cloud coverage is 33 percent with visibility at 12.2 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 14 MPH. At the end of the day don’t miss the sunset at 11:50 PM.