In December, Anchorage typically sees daytime highs of -5.5°C and overnight lows around -12.5°C. Compared to the annual average high of 6.4°C, December runs -11.9°C.
December in Anchorage averages a daytime high of -5.5°C and an overnight low of -12.5°C.
December runs -11.9°C compared to Anchorage's annual average high of 6.4°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -5.5°C and cooler evenings around -12.5°C.