Weather on September 15 at Acadia
Acadia National Park
Based on 53 years of data from Bar Harbor, ME
Planning Your Visit
September 15th in Acadia National Park (via Bar Harbor, ME) typically brings mild fall weather, with average highs around 69°F and lows near 50°F. Over 53 years of records, the warmest September 15th was in 2003 (71°F average), while the coldest was 1975 (48°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 38% of September 15th dates historically, with the wettest September 15th recording 4.19" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 15th in Acadia? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 54°F | -- | -- |
| 2024 | 78°F | 53°F | -- | -- |
| 2023 | 69°F | 52°F | -- | -- |
| 2022 | 65°F | 46°F | -- | -- |
| 2021 | 67°F | 58°F | -- | -- |
| 2020 | 63°F | 44°F | -- | -- |
| 2019 | 74°F | 53°F | -- | -- |
| 2018 | 77°F | 56°F | -- | -- |
| 2017 | 72°F | 60°F | -- | -- |
| 2016 | 68°F | 46°F | -- | -- |
| 2015 | 83°F | 56°F | -- | -- |
| 2014 | 61°F | 40°F | -- | -- |
| 2013 | 66°F | 49°F | -- | -- |
| 2012 | 72°F | 61°F | 0.03" | -- |
| 2011 | 76°F | 60°F | 0" | -- |
| 2010 | 67°F | 51°F | 0.51" | 0" |
| 2009 | 66°F | 52°F | 0.13" | 0" |
| 2008 | 77°F | 58°F | 0.53" | 0" |
| 2007 | 62°F | 56°F | 1.22" | 0" |
| 2006 | 73°F | 57°F | 0" | 0" |
| 2005 | 67°F | 61°F | 1.6" | 0" |
| 2004 | 67°F | 50°F | -- | -- |
| 2003 | 79°F | 63°F | 0" | 0" |
| 2002 | 67°F | 43°F | 0.33" | 0" |
| 2001 | 65°F | 41°F | 0" | 0" |
| 1999 | 75°F | 56°F | 0" | 0" |
| 1997 | 75°F | 56°F | 0" | 0" |
| 1996 | 61°F | 53°F | 3" | 0" |
| 1995 | 72°F | 44°F | 0.33" | 0" |
| 1994 | 70°F | 45°F | 0" | 0" |
| 1993 | 78°F | 62°F | 0" | 0" |
| 1992 | 72°F | 52°F | 0" | 0" |
| 1991 | 70°F | 49°F | 0" | 0" |
| 1990 | 64°F | 57°F | 0.66" | 0" |
| 1989 | 59°F | 50°F | 4.19" | 0" |
| 1988 | 63°F | 42°F | 0.1" | 0" |
| 1987 | 73°F | 47°F | 0" | 0" |
| 1986 | 60°F | 36°F | 0" | 0" |
| 1985 | 67°F | 40°F | 0" | 0" |
| 1984 | 74°F | 44°F | 0.81" | 0" |
| 1983 | 66°F | 41°F | 0" | 0" |
| 1982 | 73°F | 53°F | 0" | 0" |
| 1981 | 70°F | 56°F | 0" | 0" |
| 1980 | 64°F | 50°F | 1.12" | 0" |
| 1979 | 68°F | 49°F | 0.56" | 0" |
| 1978 | 61°F | 41°F | 0.48" | 0" |
| 1977 | 62°F | 43°F | 0" | 0" |
| 1976 | 79°F | 56°F | 0" | 0" |
| 1975 | 61°F | 35°F | 0" | 0" |
| 1974 | 68°F | 46°F | 0.03" | 0" |
| 1973 | 63°F | 52°F | 0.18" | 0" |
| 1972 | 67°F | 46°F | 0.13" | 0" |
| 1971 | 74°F | 55°F | 0.03" | 0" |