In December, Tucson typically sees daytime highs of 19.0°C and overnight lows around 3.1°C. Compared to the annual average high of 28.3°C, December runs -9.3°C.
December in Tucson averages a daytime high of 19.0°C and an overnight low of 3.1°C.
December runs -9.3°C compared to Tucson's annual average high of 28.3°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 19.0°C and cooler evenings around 3.1°C.