Earliest and Latest Days at or Below 32° F in Boston

This is a list of the earliest and latest days in a winter season where the low temperature fell to at least 32 °F in Boston, Massachusetts history. It is based on NOAA data from the years 1893–2024.

Earliest freezing temperature in Boston?

The earliest in a winter season that Boston, Massachusetts has recorded a low temperature of 32 °F or below is October 10 which happened in 1979.

Latest freezing temperature in Boston?

The latest in a winter season that Boston, Massachusetts has recorded a low temperature of 32 °F or below is April 29 which has happened twice, most recently in 1987.

Earliest Days ≤ 32 °F

Date	Year	Temperature
October 10	1979	32 °F
October 11	1979	32 °F
October 13	1934	32 °F
October 17	1937	32 °F
October 18	1939	31 °F
October 19	2015	31 °F
October 19	1974	30 °F
October 19	1940	31 °F
October 19	1922	28 °F
October 20	1974	32 °F
October 20	1972	32 °F
October 20	1900	32 °F
October 21	1974	30 °F
October 21	1952	31 °F
October 21	1940	32 °F
October 21	1922	32 °F
October 21	1907	32 °F
October 22	1974	32 °F
October 22	1960	31 °F
October 22	1940	28 °F

Latest Days ≤ 32 °F

Date	Year	Temperature
April 29	1987	32 °F
April 29	1909	31 °F
April 28	1987	31 °F
April 28	1947	30 °F
April 26	1919	28 °F
April 26	1893	29 °F
April 25	1936	32 °F
April 25	1919	30 °F
April 24	1930	29 °F
April 23	1989	31 °F
April 23	1933	29 °F
April 23	1930	31 °F
April 22	1984	31 °F
April 22	1981	32 °F
April 22	1947	32 °F
April 22	1940	32 °F
April 22	1933	32 °F
April 21	1981	32 °F
April 21	1947	32 °F
April 21	1925	31 °F
April 21	1922	30 °F
April 21	1908	27 °F
April 21	1907	30 °F
April 21	1897	29 °F