Earliest and Latest Days of 100° F in Fort Madison

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Fort Madison, Iowa history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 100 degree day in Fort Madison?

The earliest in the year that Fort Madison, Iowa had a high temperature of at least 100 °F is June 12 which happened in 1894.

Latest 100 degree day in Fort Madison?

The latest in the year that Fort Madison, Iowa had a high temperature of at least 100 °F is September 2 which happened in 2000.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 12	1894	100 °F
June 13	1987	100 °F
June 14	1987	102 °F
June 25	1988	104 °F
June 28	2012	101 °F
June 29	2012	100 °F
July 2	1956	100 °F
July 4	1901	100 °F
July 5	2012	101 °F
July 6	2012	101 °F
July 6	1901	100 °F
July 7	2012	105 °F
July 8	1980	100 °F
July 10	1980	100 °F
July 10	1973	100 °F
July 10	1901	100 °F
July 11	1966	102 °F
July 11	1901	100 °F
July 12	1966	101 °F
July 12	1954	100 °F
July 12	1916	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 2	2000	100 °F
August 30	2013	104 °F
August 28	2013	100 °F
August 24	2011	101 °F
August 21	2003	100 °F
August 21	1983	102 °F
August 20	1983	100 °F
August 19	1983	103 °F
August 18	1983	104 °F
August 17	1988	103 °F
August 16	1988	100 °F
August 15	2007	100 °F
August 15	1988	102 °F
August 14	2007	100 °F
August 13	1975	100 °F
August 11	1894	100 °F
August 8	1894	101 °F
August 4	1983	100 °F
August 3	1987	100 °F
August 2	1987	103 °F