In December, Wyoming typically sees daytime highs of 1.3°C and overnight lows around -6.5°C. Compared to the annual average high of 14.5°C, December runs -13.2°C.
December in Wyoming averages a daytime high of 1.3°C and an overnight low of -6.5°C.
December runs -13.2°C compared to Wyoming's annual average high of 14.5°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 1.3°C and cooler evenings around -6.5°C.