Martha's Vineyard MA Average Temperatures 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

Martha's Vineyard Temperatures: Averages by Month

Days of Hot Weather in Martha's Vineyard

How Often Martha's Vineyard Has Cold Temperatures

References

More on Weather in Massachusetts