Weather on December 21
Anchorage, AK
55 Years of Data
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.
| 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° | — | — |
Anchorage, AK Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Anchorage, AK Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Anchorage, AK Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Anchorage, AK
Anchorage, AK has no months that meet our "pleasant" threshold — every season has tradeoffs.