If you planning to travel to Fort Sam Houston, 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 1:00 PM. The temperature feels like 78.6 with a humidity level of 73 so dress accordingly. Cloud coverage is 70 percent with visibility at 12.8 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 15 MPH. At the end of the day don’t miss the sunset at 11:37 PM.