Martha's Vineyard Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is at Edgartown in Martha's Vineyard, Massachusetts during each month of the year.

The average high and low temperatures are listed below monthly and annually for the island, 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 70, 80 or 90 °F each month at The Vineyard, 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 1991 to 2020 .

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Martha's Vineyard, 2010 to 2019
High °F Low °F   High °C Low °C
40 25 January 4 -4
41 27 February 5 -3
46 32 March 8 0
56 40 April 13 4
65 50 May 19 10
74 58 June 23 14
81 65 July 27 18
80 64 August 27 18
74 60 September 24 15
65 50 October 18 10
54 39 November 12 4
46 32 December 8 0
60 45 Year 16 7
30-year temperature averages for Martha's Vineyard, 1991 to 2020
High °F Low °F   High °C Low °C
40 26 January 5 -4
42 27 February 5 -3
46 32 March 8 0
55 40 April 13 4
65 49 May 18 9
74 58 June 23 14
80 64 July 27 18
80 64 August 27 18
74 58 September 23 15
64 48 October 18 9
54 40 November 12 4
46 31 December 8 0
60 45 Year 16 7

Days of Hot Weather in Martha's Vineyard

Summer temperatures at The Vineyard are what many people would consider idyllic. About half the days have highs in the 70s Fahrenheit, with the rest reaching the 80s. Typically, only two days a year make it into the 90s. A day that hot can happen anytime from May to September, but is most likely during July.

Number of days in Martha's Vineyard of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 0 0 0
March 0 0 0
April 1 0 0
May 8 1 0
June 23 5 0
July 30 18 1
August 30 17 1
September 24 5 0
October 7 0 0
November 0 0 0
December 0 0 0
Year 122 47 2

How Often Martha's Vineyard Has Cold Temperatures

Temperatures can descend to freezing at The Vineyard from October through to April, and sometimes as late as May. Edgartown typically has 95 frosty nights a year, including most of January and February. While the coldest nights drop below 10 °F, the temperature plummets to 0 °F (-18 °C) only once or twice a decade.

On an average of 14 days annually the thermometer never rises above freezing. Days that chilly can occur from November to March.

Days per month on average in Martha's Vineyard 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 3 10 24
February 1 8 21
March 0 3 18
April 0 0 4
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 1
November 0 0 8
December 0 4 19
Year 5 25 95
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Massachusetts Temperatures
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