Earliest and Latest Days of 90° F in Dubuque

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Dubuque, Iowa history. It is based on NOAA data from the years 1938–2024.

Also see:

Earliest 90 degree day in Dubuque?

The earliest in the year that Dubuque, Iowa had a high temperature of at least 90 °F is April 22 which happened in 1980.

Latest 90 degree day in Dubuque?

The latest in the year that Dubuque, Iowa had a high temperature of at least 90 °F is October 3 which happened in 1997.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 22	1980	93 °F
May 10	2011	90 °F
May 11	2022	92 °F
May 12	2022	93 °F
May 14	2013	90 °F
May 24	2012	90 °F
May 24	2010	90 °F
May 26	1967	90 °F
May 27	2018	95 °F
May 28	2018	92 °F
May 28	2006	91 °F
May 28	1991	91 °F
May 30	1953	90 °F
June 1	1988	90 °F
June 2	2023	90 °F
June 2	2020	90 °F
June 3	2023	90 °F
June 3	1972	90 °F
June 4	1942	90 °F
June 6	2011	92 °F
June 6	1963	90 °F
June 6	1952	91 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 3	1997	90 °F
September 29	1953	93 °F
September 28	1952	91 °F
September 20	2022	93 °F
September 19	1948	91 °F
September 18	1955	90 °F
September 17	1988	90 °F
September 14	1994	91 °F
September 11	1978	90 °F
September 10	2013	93 °F
September 10	2005	90 °F
September 10	1978	91 °F
September 9	2013	94 °F
September 9	1983	91 °F
September 9	1978	92 °F
September 9	1955	97 °F
September 8	1978	94 °F
September 7	2003	90 °F
September 7	1985	91 °F
September 7	1978	94 °F
September 7	1960	92 °F
September 7	1959	91 °F