Earliest and Latest Days of 80° F in Boston

This is a list of the earliest and latest days in the year with a high temperature of at least 80 °F in Boston, Massachusetts history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 80 degree day in Boston?

The earliest in the year that Boston, Massachusetts had a high temperature of at least 80 °F is March 21 which happened in 1921.

Latest 80 degree day in Boston?

The latest in the year that Boston, Massachusetts had a high temperature of at least 80 °F is November 2 which happened in 1950.

Earliest Days ≥ 80 °F

Date	Year	Temperature
March 21	1921	83 °F
March 22	2012	83 °F
March 28	1998	85 °F
March 28	1989	81 °F
March 29	1946	85 °F
March 29	1945	86 °F
March 30	1977	81 °F
March 31	1998	89 °F
April 5	1928	84 °F
April 6	1928	82 °F
April 7	2010	90 °F
April 7	1991	86 °F
April 8	1991	85 °F
April 8	1929	84 °F
April 9	1991	85 °F
April 10	1922	85 °F
April 11	2017	84 °F
April 12	1977	85 °F
April 12	1945	85 °F
April 13	2023	88 °F
April 13	1977	86 °F
April 13	1945	83 °F
April 13	1896	84 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
November 2	1950	83 °F
October 31	1946	81 °F
October 28	2023	81 °F
October 28	1927	81 °F
October 28	1919	81 °F
October 27	1963	85 °F
October 27	1947	82 °F
October 27	1946	80 °F
October 26	2023	80 °F
October 26	1963	84 °F
October 25	1963	80 °F
October 24	1900	80 °F
October 23	1947	84 °F
October 23	1900	80 °F
October 22	2007	81 °F
October 22	1979	83 °F
October 21	1979	80 °F
October 21	1920	82 °F
October 19	2016	81 °F
October 19	1945	84 °F