In December, Caldwell typically sees daytime highs of 4.5°C and overnight lows around -4.1°C. Compared to the annual average high of 18.2°C, December runs -13.7°C.
December in Caldwell averages a daytime high of 4.5°C and an overnight low of -4.1°C.
December runs -13.7°C compared to Caldwell's annual average high of 18.2°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 4.5°C and cooler evenings around -4.1°C.