Weather on September 11 at Acadia
Acadia National Park
Based on 54 years of data from Bar Harbor, ME
Planning Your Visit
September 11th in Acadia National Park (via Bar Harbor, ME) typically brings pleasant fall weather, with average highs around 70°F and lows near 52°F. Over 54 years of records, the warmest September 11th was in 1989 (74°F average), while the coldest was 1995 (50°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 35% of September 11th dates historically, with the wettest September 11th recording 2.44" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for September 11th in Acadia? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 77°F | 51°F | -- | -- |
| 2024 | 75°F | 49°F | -- | -- |
| 2023 | 72°F | 63°F | -- | -- |
| 2022 | 82°F | 64°F | -- | -- |
| 2021 | 71°F | 48°F | -- | -- |
| 2020 | 64°F | 50°F | -- | -- |
| 2019 | 72°F | 58°F | -- | -- |
| 2018 | 66°F | 57°F | -- | -- |
| 2017 | 76°F | 50°F | -- | -- |
| 2016 | 72°F | 50°F | -- | -- |
| 2015 | 64°F | 56°F | 2.18" | 0" |
| 2014 | 67°F | 55°F | -- | -- |
| 2013 | 79°F | 59°F | -- | -- |
| 2012 | 70°F | 46°F | 0" | -- |
| 2011 | 67°F | 50°F | 0" | -- |
| 2010 | 67°F | 53°F | 0" | 0" |
| 2009 | 64°F | 37°F | 0" | 0" |
| 2008 | 66°F | 47°F | 0" | 0" |
| 2007 | 58°F | 55°F | 1.35" | 0" |
| 2006 | 64°F | 46°F | 0" | 0" |
| 2005 | 69°F | 48°F | 0" | 0" |
| 2004 | 71°F | 51°F | 0" | 0" |
| 2003 | 70°F | 51°F | 0" | 0" |
| 2002 | 72°F | 46°F | -- | -- |
| 2001 | 80°F | 62°F | 0" | 0" |
| 1999 | 75°F | 64°F | 1.83" | 0" |
| 1998 | 69°F | 45°F | 0" | 0" |
| 1997 | 67°F | 53°F | 0" | 0" |
| 1996 | 69°F | 55°F | 0.13" | 0" |
| 1995 | 65°F | 36°F | 0" | 0" |
| 1994 | 65°F | 43°F | 0.03" | 0" |
| 1993 | 66°F | 48°F | 0.05" | 0" |
| 1992 | 72°F | 61°F | 0.15" | 0" |
| 1991 | 75°F | 58°F | 0.25" | 0" |
| 1990 | 71°F | 52°F | 0.2" | 0" |
| 1989 | 84°F | 64°F | 0" | 0" |
| 1988 | 75°F | 46°F | 0" | 0" |
| 1987 | 69°F | 55°F | 0.05" | 0" |
| 1986 | 67°F | 51°F | 0.05" | 0" |
| 1985 | 57°F | 47°F | 0" | 0" |
| 1984 | 76°F | 61°F | 0" | 0" |
| 1983 | 80°F | 62°F | 0" | 0" |
| 1982 | 82°F | 48°F | 0" | 0" |
| 1981 | 63°F | 56°F | 0.56" | 0" |
| 1980 | 70°F | 38°F | 0.53" | 0" |
| 1979 | 63°F | 43°F | 0.43" | 0" |
| 1978 | 60°F | 49°F | 0.53" | 0" |
| 1977 | 68°F | 53°F | 0.3" | 0" |
| 1976 | 65°F | 55°F | 2.44" | 0" |
| 1975 | 68°F | 42°F | 0" | 0" |
| 1974 | 69°F | 56°F | 0.23" | 0" |
| 1973 | 72°F | 52°F | 0.1" | 0" |
| 1972 | 74°F | 47°F | 0" | 0" |
| 1971 | 78°F | 53°F | 0" | 0" |