December in Anchorage averages a daily high of -4°C with nights around -11.5°C. Expect roughly 7.7 wet days totalling 22.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Anchorage is May–July.
Based on ANCHORAGE MERRILL FIELD, AK US (2.3km), 1995–2024. 28 years of December data.