Dubuque, IA: records

4 October 2026: The hottest day on record in Dubuque, IA: 110°F on Tuesday 14 July 1936.

The record begins: 1873

All-time records

Hottest day: 110°F; 14 July 1936
Coldest night: -32°F; 7 January 1887
Wettest day: 8.85 in; 14 September 1967
Warmest night: 82°F; 29 June 1931
Coldest day: -16°F; 30 January 2019

Daily records by decade

New daily records set in Dubuque, IA by decade since the 1900s: the most record highs, 113, came in the 1930s; the most record lows, 73, in the 1950s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1870s	0	0	7
1880s	0	0	10
1890s	0	0	10
1900s	44	37	10
1910s	91	55	10
1920s	59	38	10
1930s	113	29	10
1940s	39	29	10
1950s	18	73	10
1960s	6	65	10
1970s	10	62	10
1980s	29	44	10
1990s	14	30	10
2000s	14	31	10
2010s	18	22	10
2020s	20	11	7

Records by month

Month	Highest	Lowest	Wettest day
January	63°F 1 January 1897	-32°F 7 January 1887	3.04 in 12 January 1960
February	72°F 27 February 2024, 26 February 2024	-31°F 9 February 1875	1.39 in 27 February 1948
March	86°F 29 March 1895	-20°F 1 March 1962	2.54 in 30 March 1998
April	93°F 22 April 1980	10°F 6 April 1982	2.77 in 13 April 2014
May	104°F 31 May 1934	21°F 3 May 2005	4.37 in 6 May 1960
June	104°F 28 June 1934	36°F 11 June 1972	3.84 in 13 June 2000
July	110°F 14 July 1936	40°F 9 July 1895	7.47 in 27 July 2011
August	107°F 18 August 1936	40°F 28 August 1986, 30 August 1915	5.99 in 21 August 2002
September	99°F 7 September 1939, 6 September 1922	24°F 30 September 1899	8.85 in 14 September 1967
October	90°F 3 October 1997	10°F 30 October 1925	3.37 in 4 October 1919
November	78°F 1 November 1933, 7 November 1915	-17°F 26 November 1977	4.79 in 2 November 1961
December	69°F 15 December 2021	-25°F 24 December 1983	2.08 in 13 December 2015

Streaks, months and years

Longest heat streak	16 days	12 July to 27 July 1901	A high of 90°F or above
Longest cold streak	53 days	14 December 1892 to 4 February 1893	A high of 32°F or below
Wettest month	16.01 in	July 2011
Driest month	a trace	October 1964	and 1 more
Wettest year	63.39 in	1961
Driest year	19.35 in	1894

Every record in words

The coldest night on record in Dubuque, IA: a low of -32°F on Friday 7 January 1887.
The wettest day on record in Dubuque, IA: 8.85 in on Thursday 14 September 1967.
The warmest night on record in Dubuque, IA: a low of 82°F on Monday 29 June 1931.
The coldest day on record in Dubuque, IA: a high of -16°F on Wednesday 30 January 2019.
The longest run of days with a high of 90°F or above in Dubuque, IA: 16 days, from Friday 12 July to Saturday 27 July 1901.
The longest run of days with a high of 32°F or below in Dubuque, IA: 53 days, from Wednesday 14 December 1892 to Saturday 4 February 1893.
The wettest month on record in Dubuque, IA: July 2011, with 16.01 in of precipitation.
The driest month on record in Dubuque, IA: October 1964, with a trace of precipitation (shared with 1 other month).
The wettest year on record in Dubuque, IA: 1961, with 63.39 in of precipitation.
The driest year on record in Dubuque, IA: 1894, with 19.35 in of precipitation.

Dubuque, IA the day's answers