Earliest and Latest Days of 90° F in Hyannis

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Hyannis, Massachusetts history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 90 degree day in Hyannis?

The earliest in the year that Hyannis, Massachusetts had a high temperature of at least 90 °F is April 15 which happened in 2023.

Latest 90 degree day in Hyannis?

The latest in the year that Hyannis, Massachusetts had a high temperature of at least 90 °F is September 22 which happened in 1895.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 15	2023	91 °F
May 11	1979	90 °F
May 23	1964	91 °F
May 27	2010	90 °F
May 27	1914	93 °F
May 31	1895	92 °F
June 1	1987	92 °F
June 2	1895	97 °F
June 5	1943	91 °F
June 6	1899	94 °F
June 9	2008	90 °F
June 9	1984	91 °F
June 10	1959	92 °F
June 11	1959	90 °F
June 11	1894	90 °F
June 12	1997	91 °F
June 13	1961	90 °F
June 14	2017	90 °F
June 14	1956	90 °F
June 15	1988	91 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
September 22	1895	94 °F
September 12	1983	90 °F
September 11	1931	91 °F
September 10	1897	91 °F
September 8	2023	93 °F
September 2	2010	90 °F
September 2	1953	95 °F
September 1	2010	91 °F
September 1	1973	92 °F
August 31	1953	94 °F
August 30	1953	94 °F
August 29	1953	92 °F
August 29	1948	99 °F
August 28	1948	100 °F
August 27	1948	99 °F
August 26	1948	97 °F
August 23	1976	94 °F
August 21	1983	90 °F
August 21	1955	91 °F
August 20	1955	91 °F