In December, Fort Collins typically sees daytime highs of 6.7°C and overnight lows around -7.4°C. Compared to the annual average high of 16.9°C, December runs -10.2°C.
December in Fort Collins averages a daytime high of 6.7°C and an overnight low of -7.4°C.
December runs -10.2°C compared to Fort Collins's annual average high of 16.9°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 6.7°C and cooler evenings around -7.4°C.