Weather on December 18 at Acadia
Acadia National Park
Based on 53 years of data from Bar Harbor, ME
Planning Your Visit
December 18th in Acadia National Park (via Bar Harbor, ME) typically brings cold winter weather, with average highs around 35°F and lows near 20°F. Over 53 years of records, the warmest December 18th was in 2023 (50°F average), while the coldest was 1979 (7°F) — a 43°F range across recorded history. Precipitation has occurred on 28% of recorded December 18th dates, with snow falling 9% of the time (heaviest snowfall: 5"). The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Acadia? Bundle up with warm layers and protect extremities from the cold.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 46°F | 27°F | -- | -- |
| 2024 | 44°F | 33°F | -- | -- |
| 2023 | 54°F | 47°F | -- | -- |
| 2022 | 33°F | 29°F | -- | -- |
| 2021 | 33°F | 24°F | -- | -- |
| 2020 | 23°F | 10°F | -- | -- |
| 2019 | 27°F | 20°F | -- | -- |
| 2018 | 30°F | 17°F | -- | -- |
| 2017 | 30°F | 6°F | -- | -- |
| 2016 | 51°F | 25°F | -- | -- |
| 2015 | 51°F | 32°F | -- | -- |
| 2014 | 33°F | 28°F | -- | -- |
| 2013 | 24°F | 11°F | 0.58" | -- |
| 2012 | 41°F | 35°F | 2.08" | -- |
| 2011 | 26°F | 9°F | 0" | -- |
| 2010 | 31°F | 11°F | 0" | 0" |
| 2009 | 18°F | 5°F | 0" | 0" |
| 2008 | 31°F | 17°F | 0.05" | 0" |
| 2007 | 24°F | 9°F | 0" | 0" |
| 2006 | 44°F | 39°F | 0" | 0" |
| 2005 | 37°F | 24°F | 0" | 0" |
| 2004 | 37°F | 9°F | 0" | 0" |
| 2003 | 49°F | 32°F | 2.01" | 0" |
| 2002 | 30°F | 17°F | 0" | 0" |
| 2001 | 34°F | 26°F | 1.6" | 5" |
| 2000 | 54°F | 34°F | 0.69" | 0" |
| 1999 | 33°F | 28°F | 0" | 0" |
| 1998 | 36°F | 24°F | 1.88" | 5" |
| 1997 | 45°F | 22°F | 0" | 0" |
| 1996 | 52°F | 39°F | 1.47" | 0" |
| 1995 | 28°F | 12°F | 0" | 0" |
| 1993 | 44°F | 22°F | 0" | 0" |
| 1992 | 49°F | 34°F | 1.55" | 0" |
| 1991 | 26°F | 8°F | -- | -- |
| 1990 | 43°F | 26°F | 0" | 0" |
| 1989 | 25°F | 2°F | 0" | 0" |
| 1988 | 28°F | 7°F | 0" | 0" |
| 1987 | 28°F | 12°F | 0" | 0" |
| 1986 | 34°F | 13°F | 0" | 0" |
| 1985 | 29°F | 11°F | 0.23" | 2" |
| 1984 | 50°F | 36°F | 0" | 0" |
| 1983 | 34°F | 15°F | 0" | 0" |
| 1981 | 31°F | 20°F | 0.36" | 0" |
| 1980 | 31°F | -1°F | 0.08" | -- |
| 1979 | 15°F | -1°F | 0" | 0" |
| 1978 | 38°F | 17°F | 0" | 0" |
| 1977 | 33°F | 19°F | 0" | 0" |
| 1976 | 27°F | 17°F | 0.15" | 0.6" |
| 1975 | 38°F | 19°F | 1.98" | 3" |
| 1974 | 38°F | 30°F | 0" | 0" |
| 1973 | 56°F | 18°F | 1.32" | 0" |
| 1972 | 28°F | 4°F | 0" | 0" |
| 1971 | 25°F | 12°F | 0" | 0" |