In December, Austin typically sees daytime highs of 17.1°C and overnight lows around 4.1°C. Compared to the annual average high of 26.0°C, December runs -8.9°C.
December in Austin averages a daytime high of 17.1°C and an overnight low of 4.1°C.
December runs -8.9°C compared to Austin's annual average high of 26.0°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 17.1°C and cooler evenings around 4.1°C.