Earliest and Latest Days of 80° F in Hyannis

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

Also see:

Earliest 80 degree day in Hyannis?

The earliest in the year that Hyannis, Massachusetts had a high temperature of at least 80 °F is April 14 which happened in 2023.

Latest 80 degree day in Hyannis?

The latest in the year that Hyannis, Massachusetts had a high temperature of at least 80 °F is October 23 which happened in 1947.

Earliest Days ≥ 80 °F

Date	Year	Temperature
April 14	2023	81 °F
April 15	2023	91 °F
April 17	2002	87 °F
April 18	2012	82 °F
April 18	1976	84 °F
April 18	1964	85 °F
April 19	1976	81 °F
April 20	1976	80 °F
April 20	1952	81 °F
April 21	1976	81 °F
April 21	1957	80 °F
April 27	2009	84 °F
April 29	1990	87 °F
April 30	1942	80 °F
May 2	2001	84 °F
May 2	1951	81 °F
May 2	1894	86 °F
May 3	2001	85 °F
May 4	2001	87 °F
May 4	1965	84 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
October 23	1947	80 °F
October 17	1947	80 °F
October 16	1963	80 °F
October 16	1897	80 °F
October 11	2011	83 °F
October 10	1949	83 °F
October 9	2005	85 °F
October 7	1946	81 °F
October 6	1946	83 °F
October 6	1941	80 °F
October 3	2013	81 °F
October 2	1986	82 °F
October 2	1968	80 °F
October 2	1954	81 °F
October 1	1950	82 °F
October 1	1897	81 °F
September 30	2003	80 °F
September 30	1983	80 °F
September 30	1959	80 °F
September 29	1948	80 °F