In December, Ann Arbor typically sees daytime highs of 1.7°C and overnight lows around -6.3°C. Compared to the annual average high of 14.4°C, December runs -12.8°C.
December in Ann Arbor averages a daytime high of 1.7°C and an overnight low of -6.3°C.
December runs -12.8°C compared to Ann Arbor's annual average high of 14.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 1.7°C and cooler evenings around -6.3°C.