In December, Casa Grande typically sees daytime highs of 19.1°C and overnight lows around 3.2°C. Compared to the annual average high of 30.0°C, December runs -10.8°C.
December in Casa Grande averages a daytime high of 19.1°C and an overnight low of 3.2°C.
December runs -10.8°C compared to Casa Grande's annual average high of 30.0°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 19.1°C and cooler evenings around 3.2°C.