Nantucket Average Temperature by Month

This page shows the average temperature in each month of the year in Nantucket, Massachusetts. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Nantucket?
In Nantucket, Massachusetts, the warmest month is August, with an average daily high temperature of 76.0 °F and an average low of 62.9 °F.
What's the Coldest Month in Nantucket?
In Nantucket, Massachusetts, the coolest month is January, with an average daily high temperature of 39.6 °F and an average low of 26.8 °F.
Month Avg. High Avg. Low
January 39.6 °F 26.8 °F
February 40.2 °F 27.2 °F
March 44.5 °F 31.6 °F
April 52.4 °F 39.0 °F
May 60.9 °F 47.3 °F
June 68.7 °F 55.8 °F
July 75.6 °F 62.8 °F
August 76.0 °F 62.9 °F
September 70.9 °F 57.3 °F
October 62.0 °F 49.0 °F
November 53.0 °F 40.1 °F
December 45.2 °F 32.0 °F
Year 57.5 °F 44.4 °F
Weather Station Details
Years Station Coordinates
1948–2024 Nantucket Memorial Airport location
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