Weather on December 21 at Acadia
Acadia National Park
Based on 52 years of data from Bar Harbor, ME
Planning Your Visit
December 21st in Acadia National Park (via Bar Harbor, ME) typically brings cold winter weather, with average highs around 35°F and lows near 18°F. Over 52 years of records, the warmest December 21st was in 1973 (47°F average), while the coldest was 1980 (4°F) — a 43°F range across recorded history. Precipitation has occurred on 33% of recorded December 21st dates, with snow falling 17% of the time (heaviest snowfall: 12"). The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Acadia? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 47°F | 24°F | -- | -- |
| 2024 | 25°F | 11°F | -- | -- |
| 2023 | 29°F | 16°F | -- | -- |
| 2022 | 33°F | 24°F | -- | -- |
| 2021 | 42°F | 26°F | -- | -- |
| 2020 | 37°F | 31°F | -- | -- |
| 2019 | 31°F | 12°F | -- | -- |
| 2018 | 54°F | 41°F | -- | -- |
| 2017 | 25°F | 8°F | -- | -- |
| 2016 | 42°F | 26°F | -- | -- |
| 2015 | 47°F | 25°F | -- | -- |
| 2014 | 33°F | 26°F | -- | -- |
| 2013 | 40°F | 28°F | 0.08" | -- |
| 2012 | 44°F | 29°F | 0.13" | -- |
| 2011 | 42°F | 17°F | 0.13" | -- |
| 2010 | 35°F | 23°F | 0.28" | 0" |
| 2009 | 26°F | 16°F | 0" | 0" |
| 2008 | 17°F | 3°F | 0" | 0" |
| 2007 | 24°F | 13°F | 0" | 0" |
| 2006 | 46°F | 14°F | 0" | 0" |
| 2005 | 31°F | 8°F | 0" | 0" |
| 2004 | 31°F | -1°F | 0" | 0" |
| 2003 | 32°F | 13°F | 0" | 0" |
| 2002 | 52°F | 29°F | 0" | 0" |
| 2001 | 38°F | 24°F | 1.3" | 2" |
| 2000 | 26°F | 13°F | 0" | 0" |
| 1999 | 49°F | 34°F | 1.98" | 0" |
| 1998 | 41°F | 18°F | 0" | 0" |
| 1997 | 36°F | 7°F | 0" | 0" |
| 1996 | 30°F | 18°F | 0" | 0" |
| 1995 | 33°F | 21°F | 2.46" | 12" |
| 1994 | 43°F | 22°F | 0" | 0" |
| 1993 | 40°F | 30°F | 0.66" | 0" |
| 1992 | 41°F | 15°F | 0" | 0" |
| 1991 | 36°F | 13°F | 0.51" | -- |
| 1989 | 19°F | 5°F | 0" | 0" |
| 1988 | 46°F | 40°F | 0" | 0" |
| 1987 | 37°F | 13°F | 1.22" | 0.4" |
| 1986 | 35°F | 12°F | 0" | 0" |
| 1985 | 24°F | 6°F | 0.03" | 0.5" |
| 1984 | 37°F | 15°F | 0" | 0" |
| 1982 | 29°F | 24°F | 1.04" | 5" |
| 1981 | 21°F | 3°F | 0" | 0" |
| 1980 | 20°F | -12°F | 0" | 0" |
| 1979 | 32°F | 12°F | 0" | 0" |
| 1978 | 35°F | 12°F | 0.76" | 4" |
| 1976 | 46°F | 17°F | 2.31" | 1" |
| 1975 | 15°F | -1°F | 2.67" | 6" |
| 1974 | 32°F | 21°F | 0" | 0" |
| 1973 | 56°F | 38°F | 0.48" | 0" |
| 1972 | 22°F | 8°F | 0.03" | 0.4" |
| 1971 | 38°F | 28°F | 0" | 0" |