Highest Daily Low Temperatures in Dubuque History

This is a list of the hottest daily low temperatures ever recorded in Dubuque, Iowa history from 1938–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Dubuque

The highest low temperature for a calendar day in Dubuque, Iowa history was 78 °F which has happened 4 times, most recently on Tuesday June 27, 1944.

Rank	Temperature	Date
1	78 °F	June 27, 1944
1	78 °F	June 4, 1944
1	78 °F	July 29, 1941
1	78 °F	July 28, 1941
5	77 °F	August 24, 2023
5	77 °F	July 19, 2019
5	77 °F	July 12, 1981
5	77 °F	August 6, 1947
5	77 °F	August 11, 1944
10	76 °F	July 20, 2011
10	76 °F	July 18, 2011
10	76 °F	July 1, 2011
10	76 °F	July 14, 1995
10	76 °F	August 22, 1947
10	76 °F	August 20, 1947
10	76 °F	July 10, 1946
10	76 °F	June 26, 1944
10	76 °F	July 17, 1942
10	76 °F	July 27, 1941
20	75 °F	August 23, 2023
20	75 °F	July 19, 2011
20	75 °F	July 30, 2006
20	75 °F	July 30, 1999
20	75 °F	July 22, 1999
20	75 °F	June 25, 1998
20	75 °F	August 13, 1995
20	75 °F	July 13, 1995
20	75 °F	July 21, 1991
20	75 °F	July 15, 1988
20	75 °F	August 17, 1983
20	75 °F	July 30, 1955
20	75 °F	June 19, 1953
20	75 °F	July 28, 1949
20	75 °F	July 4, 1949
20	75 °F	July 3, 1949
20	75 °F	July 6, 1948
20	75 °F	August 24, 1947
20	75 °F	August 23, 1947
20	75 °F	August 21, 1947
20	75 °F	August 19, 1947
20	75 °F	August 18, 1947
20	75 °F	July 30, 1947
20	75 °F	August 1, 1945
20	75 °F	July 31, 1945
20	75 °F	August 15, 1944
20	75 °F	June 25, 1944
20	75 °F	June 26, 1943
20	75 °F	July 16, 1942
20	75 °F	August 4, 1941
20	75 °F	July 30, 1941
20	75 °F	June 26, 1941