Earliest and Latest Days of 100° F in Wilmington

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Wilmington, Delaware history. It is based on NOAA data from the years 1894–2024.

Also see:

Earliest 100 degree day in Wilmington?

The earliest in the year that Wilmington, Delaware had a high temperature of at least 100 °F is June 1 which happened in 1895.

Latest 100 degree day in Wilmington?

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

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 1	1895	100 °F
June 3	1895	101 °F
June 19	1994	100 °F
June 23	1894	100 °F
June 24	1894	102 °F
July 3	1966	102 °F
July 4	1966	102 °F
July 5	1949	100 °F
July 6	2010	103 °F
July 7	2012	101 °F
July 7	2010	103 °F
July 9	1936	100 °F
July 10	1988	100 °F
July 10	1936	103 °F
July 11	1936	101 °F
July 14	1954	100 °F
July 16	1983	100 °F
July 17	1988	100 °F
July 18	2012	101 °F
July 18	1953	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 11	1983	100 °F
September 3	1953	100 °F
September 2	1953	100 °F
August 31	1953	101 °F
August 30	1953	101 °F
August 28	1973	100 °F
August 20	1983	100 °F
August 12	1896	102 °F
August 11	1896	100 °F
August 11	1895	101 °F
August 9	1896	102 °F
August 8	1918	105 °F
August 7	1918	107 °F
August 7	1896	101 °F
August 6	1955	101 °F
August 6	1918	102 °F
August 6	1896	103 °F
August 5	1896	101 °F
August 2	1955	101 °F
July 31	1954	102 °F
July 31	1940	102 °F