San Antonio's winters are mild, with temperatures rarely dipping below freezing and averaging around 12°C in January. As the year progresses, temperatures rise steadily, with spring arriving in March when average highs reach 19°C. Summer months from June to August bring warm to hot conditions, with average highs often reaching above 30°C. Autumn is a pleasant time, with comfortable temperatures returning by October, before gradually cooling off again by November and December, which are marked by mild winters similar to January.