Bar Harbor and Acadia National Park Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is at Bar Harbor and Acadia National Park in Maine during each month of the year.

The average high and low temperatures are listed below monthly and annually for the area, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 60, 70 or 80 °F each month in Bar Harbor, scroll down farther. There are also monthly and yearly counts of days with cold weather.

All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.

Average Bar Harbor temperatures
High °F Low °F   High °C Low °C
31 14 January 0 -10
35 17 February 2 -8
42 25 March 5 -4
53 35 April 12 2
65 45 May 18 7
74 54 June 23 12
79 59 July 26 15
78 59 August 26 15
71 52 September 21 11
59 42 October 15 6
48 33 November 9 1
37 21 December 3 -6
56 38 Year 13 3

Days of Hot Weather in Bar Harbor

Bar Harbor and Acadia Park enjoy moderately hot summers with daily temperatures peaking in the 70s or 80s Fahrenheit. Only two days a year on average make it into the 90s (above 32 °C), and none reach 100 (38 °C). The 90-degree weather can show up anytime from June to September.

Number of days in Bar Harbor of at least 60, 70 or 80 °F
  60 °F
16 °C
70 °F
21 °C
80 °F
27 °C
January 0 0 0
February 0 0 0
March 1 0 0
April 6 1 0
May 22 9 2
June 29 22 7
July 31 29 14
August 31 29 13
September 29 15 3
October 13 3 0
November 2 0 0
December 0 0 0
Year 162 107 38

How Often Bar Harbor Has Cold Temperatures

Winters at the Mount Desert Island community do get chilly, with most nights from December to March seeing temperatures below freezing. Typically, eight of those a year drop down to 0 °F (-18 °C) or below.

For an average of 40 days annually the thermometer here never rises above freezing. Days that chilly can occur from November to April, including about half of January.

Days per month on average in Bar Harbor when the minimum temperature drops to 32, 20 or 10 °F or below
  10 °F
-12 °C
20 °F
-8 °C
32 °F
0 °C
January 12 21 29
February 8 17 25
March 3 9 24
April 0 0 9
May 0 0 1
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 3
November 0 2 14
December 5 14 25
Year 28 63 130
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Maine Temperatures
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