Weather on May 18 at Acadia
Acadia National Park
Based on 56 years of data from Bar Harbor, ME
Planning Your Visit
May 18th in Acadia National Park (via Bar Harbor, ME) typically brings mild spring weather, with average highs around 65°F and lows near 44°F. Over 56 years of records, the warmest May 18th was in 2017 (74°F average), while the coldest was 2002 (40°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 30% of May 18th dates historically, with the wettest May 18th recording 3.45" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Acadia? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 64°F | 51°F | -- | -- |
| 2025 | 65°F | 48°F | -- | -- |
| 2024 | 61°F | 51°F | -- | -- |
| 2023 | 61°F | 30°F | -- | -- |
| 2022 | 66°F | 44°F | -- | -- |
| 2021 | 76°F | 50°F | -- | -- |
| 2020 | 68°F | 47°F | -- | -- |
| 2019 | 59°F | 44°F | -- | -- |
| 2018 | 61°F | 42°F | -- | -- |
| 2017 | 89°F | 59°F | -- | -- |
| 2016 | 63°F | 41°F | -- | -- |
| 2015 | 64°F | 44°F | -- | -- |
| 2014 | 55°F | 47°F | 0.18" | -- |
| 2013 | 59°F | 41°F | 0" | -- |
| 2012 | 66°F | 46°F | 0" | -- |
| 2011 | 55°F | 48°F | 0.2" | -- |
| 2010 | 72°F | 50°F | 0" | 0" |
| 2009 | 57°F | 42°F | 0" | 0" |
| 2008 | 67°F | 44°F | 0" | 0" |
| 2007 | 45°F | 36°F | 1.19" | 0" |
| 2006 | 63°F | 46°F | 0" | 0" |
| 2005 | 56°F | 42°F | 0.03" | 0" |
| 2004 | 57°F | 44°F | -- | -- |
| 2003 | 78°F | 47°F | 0" | 0" |
| 2002 | 45°F | 35°F | 0.76" | 0" |
| 2001 | 71°F | 40°F | 0" | 0" |
| 2000 | 67°F | 50°F | 0" | 0" |
| 1999 | 75°F | 50°F | 0" | 0" |
| 1998 | 74°F | 47°F | 0.08" | 0" |
| 1997 | 60°F | 43°F | 0.13" | 0" |
| 1996 | 65°F | 45°F | 2.01" | 0" |
| 1995 | 56°F | 40°F | 3.45" | 0" |
| 1994 | 53°F | 41°F | 0.03" | 0" |
| 1993 | 64°F | 38°F | 0" | 0" |
| 1992 | 62°F | 39°F | 0" | 0" |
| 1991 | 67°F | 39°F | 2.39" | 0" |
| 1990 | 53°F | 39°F | 3.05" | 0" |
| 1989 | 78°F | 35°F | 0" | 0" |
| 1988 | 58°F | 48°F | 0.41" | 0" |
| 1987 | 73°F | 46°F | 0" | 0" |
| 1986 | 77°F | 47°F | 0" | 0" |
| 1985 | 65°F | 45°F | 0.25" | 0" |
| 1984 | 58°F | 36°F | 0.13" | 0" |
| 1983 | 58°F | 33°F | 0" | 0" |
| 1982 | 66°F | 37°F | 0" | 0" |
| 1981 | -- | 33°F | 0" | 0" |
| 1980 | 69°F | -- | 0" | 0" |
| 1979 | 70°F | 45°F | 0" | 0" |
| 1978 | 65°F | 47°F | 0.66" | 0" |
| 1977 | 88°F | 58°F | 0" | 0" |
| 1976 | 55°F | 50°F | 0.61" | 0" |
| 1975 | 71°F | 51°F | 0" | 0" |
| 1974 | 67°F | 48°F | 0" | 0" |
| 1973 | 55°F | 38°F | 0" | 0" |
| 1972 | 74°F | 47°F | 0" | 0" |
| 1971 | 72°F | 45°F | 0" | 0" |