San Antonio - Five-Day Weather ForecastSan Antonio ClimateSan Antonio has a mild, temperate climate averaging more than 300 days of sunshine a year. Clear blue skies, breezes, and sunshine guarantee to enhance any visit made to the area. In January temperatures reach a maximum of 62 degrees Fahrenheit (17 degrees Celsius) while in August they climb to 95 degrees Fahrenheit (35 degrees Celsius).
San Antonio Climate Chart