Weather on December 21 at Glacier Bay
Glacier Bay National Park and Preserve
Based on 55 years of data from Juneau, AK
Planning Your Visit
December 21st in Glacier Bay National Park (via Juneau, AK) typically brings cold winter weather, with average highs around 32°F and lows near 23°F. Over 55 years of records, the warmest December 21st was in 1999 (45°F average), while the coldest was 1971 (7°F) — a 38°F range across recorded history. Precipitation has occurred on 58% of recorded December 21st dates, with snow falling 27% of the time (heaviest snowfall: 7.1"). The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
Planning for December 21st in Glacier Bay? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 11°F | 6°F | 0" | 0" |
| 2024 | 41°F | 31°F | 0.2" | 0" |
| 2023 | 39°F | 29°F | 0.18" | 0" |
| 2022 | 17°F | 7°F | 0" | 0" |
| 2021 | 33°F | 18°F | 0.91" | 7.1" |
| 2020 | 37°F | 34°F | 0.03" | 0" |
| 2019 | 35°F | 32°F | 0.23" | 1.7" |
| 2018 | 34°F | 27°F | 0" | 0" |
| 2017 | 34°F | 18°F | 0" | 0" |
| 2016 | 39°F | 35°F | 0.86" | 0" |
| 2015 | 38°F | 33°F | 0.1" | 0.1" |
| 2014 | 39°F | 34°F | 0.38" | 0" |
| 2013 | 26°F | 13°F | 0.25" | 0.8" |
| 2012 | 18°F | 3°F | 0" | 0" |
| 2011 | 38°F | 34°F | 1.47" | 0" |
| 2010 | 22°F | 4°F | 0" | 0" |
| 2009 | 20°F | 10°F | 0" | 0" |
| 2008 | 28°F | 3°F | 0" | 0" |
| 2007 | 36°F | 30°F | 1.12" | 0.3" |
| 2006 | 37°F | 32°F | 1.14" | 2.2" |
| 2005 | 46°F | 41°F | 0.97" | 0" |
| 2004 | 35°F | 29°F | 0" | 0" |
| 2003 | 44°F | 37°F | 2.16" | 0" |
| 2002 | 24°F | 19°F | 0" | 0" |
| 2001 | 37°F | 33°F | 0.61" | 0.5" |
| 2000 | 33°F | 19°F | 0" | 0" |
| 1999 | 47°F | 43°F | 0.23" | 0" |
| 1998 | 24°F | 15°F | 0" | 0" |
| 1997 | 37°F | 32°F | 1.98" | 1.3" |
| 1996 | 22°F | 15°F | 0" | 0" |
| 1995 | 42°F | 34°F | 0.1" | 0" |
| 1994 | 40°F | 34°F | 1.88" | 0" |
| 1993 | 40°F | 35°F | 1.47" | 0" |
| 1992 | 21°F | 7°F | 0.08" | 0.5" |
| 1991 | 40°F | 32°F | 0.66" | 0.7" |
| 1990 | 28°F | 20°F | 0.03" | 0" |
| 1989 | 33°F | 22°F | 1.32" | 4.6" |
| 1988 | 30°F | 26°F | 0" | 0.1" |
| 1987 | 39°F | 36°F | 0.15" | 0" |
| 1986 | 40°F | 30°F | 0" | 0" |
| 1985 | 44°F | 42°F | 1.32" | 0" |
| 1984 | 20°F | 11°F | 0.66" | 3.5" |
| 1983 | 24°F | 1°F | 0" | 0" |
| 1982 | 30°F | 16°F | 0" | 0" |
| 1981 | 36°F | 32°F | 0.05" | 0" |
| 1980 | 25°F | 14°F | 0" | 0" |
| 1979 | 33°F | 28°F | 0.48" | 1.8" |
| 1978 | 30°F | 18°F | 0.05" | 0.3" |
| 1977 | 20°F | 5°F | 0" | 0" |
| 1976 | 42°F | 33°F | 0.48" | 0" |
| 1975 | 39°F | 32°F | 0" | 0" |
| 1974 | 33°F | 28°F | 0" | 0" |
| 1973 | 37°F | 31°F | 0.03" | 0" |
| 1972 | 25°F | 3°F | 0" | 0" |
| 1971 | 13°F | 1°F | 0" | 0" |