Weather on December 20
Anchorage, AK
55 Years of Data
Avg High
23°F
Avg Low
8°F
Warmest
2011
34°F avg
Coldest
2022
-9°F avg
About This Date
December 20th 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 20th was in 2011 (34°F average), while the coldest was 2022 (-9°F) — a 43°F range across recorded history. Precipitation has occurred on 35% of recorded December 20th dates, with snow falling 10% of the time (heaviest snowfall: 12.5"). The last decade has been 3.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.7°F cooler on this date compared to 20-30 years ago.
Planning for December 20th in Anchorage, AK? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 17° | -11° | 3° | — | — |
| 2024 | 24° | 18° | 21° | — | — |
| 2023 | 25° | 22° | 24° | — | — |
| 2022coldest | -1° | -17° | -9° | — | — |
| 2021 | 22° | 17° | 20° | 0.79" | — |
| 2020 | 26° | 8° | 17° | 0.05" | — |
| 2019 | 14° | 3° | 9° | — | — |
| 2018 | 21° | 14° | 18° | — | — |
| 2017 | 36° | 19° | 28° | — | — |
| 2016 | 20° | 8° | 14° | — | — |
| 2015 | 24° | 13° | 19° | — | — |
| 2014 | 22° | 12° | 17° | — | — |
| 2013 | 24° | 9° | 17° | 0.1" | — |
| 2012 | 20° | -2° | 9° | 0.03" | — |
| 2011warmest | 43° | 25° | 34° | 0.38" | — |
| 2010 | 18° | 4° | 11° | — | — |
| 2009 | 29° | 6° | 18° | — | — |
| 2008 | 20° | 7° | 14° | — | — |
| 2007 | 10° | -10° | 0° | 0.05" | — |
| 2006 | 28° | 11° | 20° | 0.89" | — |
| 2005 | 22° | 13° | 17° | — | — |
| 2004 | 29° | 16° | 22° | 0.03" | — |
| 2003 | 22° | 5° | 13° | 0.41" | 5.5" |
| 2002 | 21° | 8° | 15° | — | — |
| 2001 | 27° | 0° | 13° | — | 0.5" |
| 2000 | 43° | 18° | 30° | 1.19" | — |
| 1999 | 35° | 22° | 28° | 0.18" | 12.5" |
| 1998 | 22° | 7° | 14° | — | — |
| 1997 | 19° | 5° | 12° | — | — |
| 1972 | 14° | 2° | 8° | — | — |
| 1971 | 25° | -16° | 4° | — | — |
31 years of data from ANCHORAGE PARK STRIP