Weather on September 23 at Acadia
Acadia National Park
Based on 53 years of data from Bar Harbor, ME
Planning Your Visit
September 23rd in Acadia National Park (via Bar Harbor, ME) typically brings mild fall weather, with average highs around 67°F and lows near 49°F. Over 53 years of records, the warmest September 23rd was in 2017 (70°F average), while the coldest was 1979 (48°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 42% of September 23rd dates historically, with the wettest September 23rd recording 5.69" 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 23rd 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 | 58°F | -- | -- |
| 2024 | 59°F | 51°F | -- | -- |
| 2023 | 67°F | 48°F | -- | -- |
| 2022 | 56°F | 44°F | -- | -- |
| 2021 | 74°F | 63°F | -- | -- |
| 2020 | 74°F | 48°F | -- | -- |
| 2019 | 75°F | 65°F | -- | -- |
| 2018 | 65°F | 46°F | -- | -- |
| 2017 | 83°F | 58°F | -- | -- |
| 2016 | 64°F | 46°F | -- | -- |
| 2015 | 74°F | 50°F | -- | -- |
| 2014 | 63°F | 41°F | -- | -- |
| 2013 | 58°F | 43°F | -- | -- |
| 2012 | 72°F | 56°F | 0" | -- |
| 2011 | 74°F | 60°F | 0.05" | -- |
| 2010 | 71°F | 54°F | 0" | 0" |
| 2009 | 71°F | 55°F | 0" | 0" |
| 2008 | 68°F | 35°F | 0" | 0" |
| 2007 | 73°F | 57°F | 0" | 0" |
| 2006 | 62°F | 49°F | 0.08" | 0" |
| 2005 | 75°F | 61°F | 0.05" | 0" |
| 2004 | 65°F | 55°F | 0" | 0" |
| 2003 | 63°F | 56°F | -- | -- |
| 2002 | 73°F | 61°F | 2.59" | 0" |
| 2001 | 78°F | 59°F | -- | 0" |
| 1999 | 61°F | 52°F | 0.84" | 0" |
| 1998 | 71°F | 44°F | 0.74" | 0" |
| 1997 | 60°F | 49°F | 0" | 0" |
| 1996 | 59°F | 45°F | 0.36" | 0" |
| 1995 | 61°F | 51°F | 0.81" | 0" |
| 1994 | 61°F | 47°F | 0.2" | 0" |
| 1993 | 66°F | 44°F | 0.91" | 0" |
| 1992 | 66°F | 49°F | 1.04" | 0" |
| 1991 | 61°F | 46°F | 0.1" | 0" |
| 1990 | 67°F | 52°F | 5.69" | 0" |
| 1989 | 74°F | 62°F | 0" | 0" |
| 1988 | 63°F | 41°F | 0" | 0" |
| 1987 | 64°F | 44°F | 0" | 0" |
| 1986 | 66°F | 48°F | 0.99" | 0" |
| 1985 | 68°F | 48°F | 0" | 0" |
| 1984 | 71°F | 45°F | 0" | 0" |
| 1983 | 64°F | 42°F | 0.03" | 0" |
| 1982 | 55°F | 44°F | 0.25" | 0" |
| 1981 | 62°F | 48°F | 1.27" | 0" |
| 1980 | 71°F | 54°F | 0.2" | 0" |
| 1979 | 58°F | 39°F | 0.13" | 0" |
| 1978 | 62°F | 41°F | 0" | 0" |
| 1977 | 60°F | 41°F | 2.84" | 0" |
| 1976 | 63°F | 46°F | 0" | 0" |
| 1974 | 60°F | 46°F | 0.08" | 0" |
| 1973 | 64°F | 46°F | 1.02" | 0" |
| 1972 | 67°F | 41°F | 0" | 0" |
| 1971 | 67°F | 47°F | 0" | 0" |