Today’s and tonight’s San Antonio, TX weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com Be prepared with the most accurate 10-day forecast for San Antonio, TX with highs, lows, chance of precipitation from The Weather Channel and Weather.com Rain? Easy to use weather radar at your fingertips! Get your 3-Day weather forecast for San Antonio, TX. Track storms, and stay in-the-know and prepared for what's coming. Weather forecast for San Antonio, Texas, live radar, satellite, severe weather alerts, hour by hour and 7 day forecast temperatures and Hurricane tracking from KSAT Weather Authority and KSAT.com. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the San Antonio area. Hi/Low, RealFeel, precip, radar, & everything you need to be ready for the day, commute, and weekend! Snow? San Antonio Weather Forecasts. Ice?