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 12:33 PM. The temperature feels like 78.7 with a humidity level of 46 so dress accordingly. Cloud coverage is 4 percent with visibility at 14.5 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 5 MPH. At the end of the day don’t miss the sunset at 12:07 AM.