Weather on December 21
Anchorage, AK
55 Years of Data
Avg High
23°F
Avg Low
8°F
Warmest
1999
34°F avg
Coldest
2012
-2°F avg
About This Date
December 21st in Anchorage, AK typically brings very cold winter weather, with average highs around 23°F and lows near 8°F. Over 31 years of records, the warmest December 21st was in 1999 (34°F average), while the coldest was 2012 (-2°F) — a 36°F range across recorded history. Precipitation has occurred on 19% of recorded December 21st dates, with snow falling 3% of the time (heaviest snowfall: 2.5"). The last decade has been 8.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 8.1°F cooler on this date compared to 20-30 years ago.
Planning for December 21st in Anchorage, AK? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 13° | -11° | 1° | — | — |
| 2024 | 33° | 23° | 28° | — | — |
| 2023 | 23° | 11° | 17° | — | — |
| 2022 | 13° | -10° | 2° | — | — |
| 2021 | 20° | 2° | 11° | — | — |
| 2020 | 29° | 22° | 26° | — | — |
| 2019 | 11° | -1° | 5° | — | — |
| 2018 | 19° | 12° | 16° | — | — |
| 2017 | 20° | 9° | 15° | — | — |
| 2016 | 18° | 5° | 12° | — | — |
| 2015 | 21° | 10° | 16° | — | — |
| 2014 | 27° | 17° | 22° | 0.08" | — |
| 2013 | 30° | 24° | 27° | 0.03" | — |
| 2012coldest | 7° | -12° | -2° | — | — |
| 2011 | 37° | 16° | 27° | 0.08" | — |
| 2010 | 14° | -2° | 6° | — | — |
| 2009 | 28° | 19° | 24° | — | — |
| 2008 | 16° | 1° | 9° | — | — |
| 2007 | 20° | 6° | 13° | — | — |
| 2006 | 24° | 9° | 17° | 0.46" | — |
| 2005 | 30° | 18° | 24° | — | — |
| 2004 | 26° | 15° | 21° | — | — |
| 2003 | 26° | 9° | 17° | 0.48" | — |
| 2002 | 24° | 15° | 20° | — | — |
| 2001 | 40° | 20° | 30° | — | — |
| 2000 | 43° | 11° | 27° | — | — |
| 1999warmest | 44° | 24° | 34° | 0.53" | 2.5" |
| 1998 | 22° | 10° | 16° | — | — |
| 1997 | 13° | -4° | 4° | — | — |
| 1972 | 14° | -2° | 6° | — | — |
| 1971 | 23° | -15° | 4° | — | — |
31 years of data from ANCHORAGE PARK STRIP