In December, Killeen typically sees daytime highs of 16.4°C and overnight lows around 3.5°C. Compared to the annual average high of 25.6°C, December runs -9.2°C.
December in Killeen averages a daytime high of 16.4°C and an overnight low of 3.5°C.
December runs -9.2°C compared to Killeen's annual average high of 25.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 16.4°C and cooler evenings around 3.5°C.