Weather on September 20 at Acadia

Acadia National Park

MENortheast500 ft elevation
Avg High67°F
Avg Low49°F
Warmest198570°F
Coldest199347°F

Based on 53 years of data from Bar Harbor, ME

Planning Your Visit

September 20th 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 20th was in 1985 (70°F average), while the coldest was 1993 (47°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 26% of September 20th dates historically, with the wettest September 20th recording 5.21" of rain. The last decade has been 3.3°F cooler on this date compared to 20-30 years ago.

The last decade has been 3.3°F cooler on this date compared to 20-30 years ago.

Planning for September 20th in Acadia? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202566°F43°F----
202466°F57°F----
202373°F52°F----
202256°F50°F----
202169°F49°F----
202059°F38°F----
201976°F49°F----
201860°F49°F----
201772°F63°F----
201674°F60°F----
201569°F50°F----
201461°F43°F----
201375°F55°F----
201265°F43°F0"--
201163°F47°F0.03"--
201065°F49°F0"0"
200964°F39°F0"0"
200860°F42°F0"0"
200770°F54°F0"0"
200668°F56°F1.24"0"
200571°F60°F0.03"0"
200464°F42°F0.05"0"
200367°F62°F----
200272°F58°F0"0"
199975°F52°F0"0"
199869°F57°F0"0"
199775°F57°F0.25"0"
199671°F43°F0.13"0"
199565°F57°F0"0"
199470°F41°F0"0"
199360°F33°F0"0"
199268°F41°F0"0"
199154°F46°F2.54"0"
199061°F45°F1.6"0"
198965°F55°F1.12"0"
198871°F52°F0"0"
198755°F49°F2.29"0"
198670°F46°F0"0"
198582°F57°F0"0"
198468°F48°F0"0"
198377°F61°F0"0"
198264°F43°F0"0"
198162°F50°F5.21"0"
198063°F43°F0"0"
197970°F34°F0"0"
197870°F43°F0"0"
197762°F43°F0"0"
197676°F60°F0"0"
197558°F53°F1.52"0"
197468°F44°F0.15"0"
197365°F47°F0.03"0"
197264°F45°F0"0"
197163°F47°F0"0"

September 20 at Nearby Parks

Holiday Weather at Acadia

Official NPS WebsiteVisit nps.gov/acad for park information, alerts, and reservations

Explore More at Acadia

See historical weather for other dates

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