In October, San Antonio typically sees daytime highs of 18.1°C and overnight lows around 8.3°C. Compared to the annual average high of 18.7°C, October runs -0.7°C.
October in San Antonio averages a daytime high of 18.1°C and an overnight low of 8.3°C.
October runs -0.7°C compared to San Antonio's annual average high of 18.7°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 8.3°C.