Earliest and Latest Days of 100° F in Baltimore

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Baltimore, Maryland history. It is based on NOAA data from the years 1871–2024.

Also see:

Earliest 100 degree day in Baltimore?

The earliest in the year that Baltimore, Maryland had a high temperature of at least 100 °F is May 28 which happened in 1941.

Latest 100 degree day in Baltimore?

The latest in the year that Baltimore, Maryland had a high temperature of at least 100 °F is September 11 which happened in 1983.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 28	1941	100 °F
June 5	1925	101 °F
June 9	2011	100 °F
June 15	1994	101 °F
June 20	1931	100 °F
June 21	2012	100 °F
June 21	1923	100 °F
June 22	1988	100 °F
June 24	2010	100 °F
June 27	2010	100 °F
June 29	2012	103 °F
June 29	1934	105 °F
June 30	1959	100 °F
June 30	1945	100 °F
July 1	1931	101 °F
July 1	1901	103 °F
July 1	1898	100 °F
July 2	1966	100 °F
July 2	1941	100 °F
July 2	1901	103 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 11	1983	100 °F
September 8	1939	100 °F
September 8	1939	100 °F
September 7	1881	101 °F
September 6	2023	100 °F
September 1	1941	100 °F
August 31	1953	102 °F
August 30	1953	101 °F
August 29	1953	100 °F
August 28	1948	101 °F
August 27	1948	101 °F
August 26	1948	101 °F
August 20	1983	105 °F
August 20	1962	100 °F
August 17	1997	100 °F
August 17	1988	100 °F
August 16	1997	101 °F
August 15	1988	103 °F
August 11	1900	100 °F
August 10	1900	100 °F