Weather on December 20
Anchorage, AK
55 Years of Data
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.
| 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° | — | — |
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.