Weather on May 21 at Acadia

Acadia National Park

MENortheast500 ft elevation
Avg High68°F
Avg Low46°F
Warmest200973°F
Coldest197645°F

Based on 54 years of data from Bar Harbor, ME

Planning Your Visit

May 21st in Acadia National Park (via Bar Harbor, ME) typically brings mild spring weather, with average highs around 68°F and lows near 46°F. Over 54 years of records, the warmest May 21st was in 2009 (73°F average), while the coldest was 1976 (45°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 21st dates historically, with the wettest May 21st recording 4.04" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.

The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.

Planning for May 21st in Acadia? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202556°F41°F----
202468°F49°F----
202375°F54°F----
202258°F47°F----
202170°F48°F----
202072°F47°F----
201960°F45°F----
201871°F51°F----
201771°F45°F----
201678°F53°F----
201566°F41°F----
201460°F52°F0.3"--
201355°F46°F0.2"--
201278°F54°F0"--
201164°F50°F0.03"--
201076°F51°F0"0"
200985°F62°F0"0"
200863°F44°F0.64"0"
200750°F41°F0.05"0"
200664°F48°F0"0"
200551°F42°F----
200474°F46°F0"0"
200383°F59°F0"0"
200259°F36°F0"0"
200169°F41°F0"0"
200066°F34°F0"0"
199969°F45°F0.03"0"
199876°F50°F0"0"
199760°F37°F0.03"0"
199675°F48°F0.46"0"
199573°F46°F0.05"0"
199468°F37°F0"0"
199359°F45°F0.48"0"
199287°F50°F0"0"
199177°F47°F0"0"
199053°F37°F0"0"
198977°F50°F0"0"
198762°F40°F0"0"
198665°F46°F0"0"
198569°F38°F0.05"0"
198468°F49°F0.48"0"
198372°F50°F2.36"0"
198274°F44°F0.2"0"
198171°F43°F0"0"
198065°F41°F0.76"0"
197958°F48°F1.37"0"
197865°F45°F0.33"0"
197776°F45°F0"0"
197653°F38°F0"0"
197570°F48°F0"0"
197468°F40°F0"0"
197362°F45°F4.04"0"
197279°F45°F1.5"0"
197170°F50°F0"0"

May 21 at Nearby Parks

Holiday Weather at Acadia

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

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