Number of Days of 90 °F in Janesville by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 90 degrees Fahrenheit in Janesville, Wisconsin, between 1893 and 2024.

Also see:

Which year had the most 90° days?

Based on NOAA records, the year 2012 holds the record for the most 90 °F days in Janesville history. There were 45 days with a high temperature of at least 90 degrees that year.

How many so far this year (2024)?

It has not reached 90 degrees Fahrenheit in Janesville so far in 2024. As of April 30, the highest temperature this year is 82 °F.

The last time it reached at least 90° F was September 6, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 90 °F
2024	85	0
2023	43	15
2022	40	16
2021	26	21
2020	46	14
2019	66	8
2018	46	14
2017	37	17
2016	52	12
2015	71	6
2014	83	1
2013	46	14
2012	1	45
2011	33	19
2010	60	9
2009	73	4
2008	80	2
2007	60	9
2006	52	12
2005	21	23
2004	80	2
2003	57	11
2002	37	17
2001	22	22
2000	73	4
1999	26	21
1998	52	12
1997	57	11
1996	66	8
1995	11	27
1994	66	8
1993	77	3
1992	73	4
1991	22	22
1990	70	7
1989	43	15
1988	2	43
1987	77	3
1986	43	15
1985	49	13
1984	52	12
1983	4	39
1982	71	6
1981	60	9
1980	26	21
1979	60	9
1978	22	22
1977	17	25
1976	8	30
1975	11	27
1974	40	16
1973	34	18
1972	37	17
1971	22	22
1970	19	24
1969	49	13
1968	30	20
1967	60	9
1966	11	27
1965	52	12
1964	6	32
1963	11	27
1962	40	16
1961	34	18
1960	57	11
1959	30	20
1958	60	9
1957	26	21
1956	34	18
1955	2	43
1954	11	27
1953	7	31
1952	9	28
1951	77	3
1950	73	4
1949	19	24
1948	17	25
1947	11	27
1946	30	20
1945	49	13
1944	83	1
1943	85	0
1942	85	0
1941	85	0
1940	85	0
1939	85	0
1938	85	0
1937	85	0
1936	85	0
1935	85	0
1934	85	0
1933	85	0
1932	85	0
1931	85	0
1930	85	0
1929	85	0
1928	85	0
1927	85	0
1926	85	0
1925	85	0
1924	85	0
1923	85	0
1922	85	0
1921	85	0
1920	85	0
1919	85	0
1918	85	0
1917	80	2
1916	85	0
1915	85	0
1914	85	0
1913	85	0
1912	85	0
1911	85	0
1910	85	0
1909	85	0
1908	85	0
1907	85	0
1906	85	0
1905	85	0
1904	85	0
1903	85	0
1902	85	0
1901	85	0
1900	85	0
1899	85	0
1898	85	0
1897	85	0
1896	85	0
1895	9	28
1894	5	36
1893	66	8

Weather Station Details

Years	Station	Coordinates
1987–2024	Afton-Janesville WWTP	location
1893–1987	Janesville	location