Duluth, MN: records

4 October 2026: The hottest day on record in Duluth, MN: 106°F on Monday 13 July 1936.

All-time records

The coldest night on record in Duluth, MN: a low of -41°F on Friday 2 January 1885.
The wettest day on record in Duluth, MN: 5.20 in on Wednesday 21 July 1909.
The warmest night on record in Duluth, MN: a low of 79°F on Monday 13 July 1936.
The coldest day on record in Duluth, MN: a high of -22°F on Saturday 9 January 1982 and Friday 5 January 1912.

Month	Highest	Lowest	Wettest day
January	55°F 23 January 1942, 22 January 1942	-41°F 2 January 1885	1.18 in 23 January 1969
February	58°F 26 February 1895	-39°F 2 February 1996	1.16 in 27 February 1998
March	81°F 28 March 1946	-29°F 2 March 1989	2.24 in 12 March 1977
April	88°F 27 April 1952	-5°F 4 April 1975, 3 April 1954	2.61 in 19 April 1948
May	95°F 30 May 1939	16°F 3 May 1907	3.93 in 23 May 2010
June	97°F 28 June 1910	27°F 10 June 1972	4.14 in 19 June 2012
July	106°F 13 July 1936	35°F 1 July 1988	5.20 in 21 July 1909
August	97°F 1 August 1930	32°F 27 August 1986	3.22 in 8 August 1939
September	97°F 3 September 2023	23°F 22 September 1974, 26 September 1965, 20 September 1962	3.97 in 6 September 1876
October	86°F 2 October 1953	6°F 27 October 1917	2.94 in 26 October 2010
November	75°F 6 November 2020	-29°F 29 November 1875	2.26 in 10 November 1998
December	56°F 6 December 1939	-35°F 28 December 1917	1.91 in 6 December 1950

The longest run of days with a high of 90°F or above in Duluth, MN: 7 days, from Tuesday 7 July to Monday 13 July 1936.
The longest run of days with a high of 32°F or below in Duluth, MN: 77 days, from Saturday 19 December 1874 to Friday 5 March 1875.
The wettest month on record in Duluth, MN: September 1881, with 11.52 in of precipitation.
The driest month on record in Duluth, MN: December 1905, with 0.07 in of precipitation.
The wettest year on record in Duluth, MN: 1879, with 45.38 in of precipitation.
The driest year on record in Duluth, MN: 1910, with 18.11 in of precipitation.

New daily records set in Duluth, MN by decade since the 1900s: the most record highs, 82, came in the 1930s; the most record lows, 136, in the 1910s.

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1870s	0	0	9
1880s	0	0	10
1890s	0	0	10
1900s	51	125	10
1910s	78	136	10
1920s	63	95	10
1930s	82	58	10
1940s	52	44	10
1950s	30	78	10
1960s	32	83	10
1970s	18	67	10
1980s	34	52	10
1990s	27	26	10
2000s	16	13	10
2010s	32	7	10
2020s	26	4	7