In December, Cheyenne typically sees daytime highs of 4.3°C and overnight lows around -8.4°C. Compared to the annual average high of 14.6°C, December runs -10.3°C.
December in Cheyenne averages a daytime high of 4.3°C and an overnight low of -8.4°C.
December runs -10.3°C compared to Cheyenne's annual average high of 14.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 4.3°C and cooler evenings around -8.4°C.