Number of Days of 25 °C in Cornwall by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 25 degrees Celsius in Cornwall, Ontario, between 1867 and 2024.

Also see:

Which year had the most 25° days?

Based on NOAA records, the year 2012 holds the record for the most 25 °C days in Cornwall history. There were 100 days with a high temperature of at least 25 degrees that year.

How many so far this year (2024)?

It has not reached 25 degrees Celsius in Cornwall so far in 2024. As of April 27, the highest temperature this year is 75 °F.

The last time it reached at least 25° C was October 6, 2023.

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

Year	Rank	Days >= 25 °C
2024	92	0
2023	18	80
2022	15	84
2021	15	84
2020	11	89
2019	29	74
2018	6	92
2017	23	78
2016	2	98
2015	13	87
2014	34	72
2013	50	67
2012	1	100
2011	34	72
2010	23	78
2009	75	56
2008	54	65
2007	31	73
2006	50	67
2005	9	90
2004	54	65
2003	21	79
2002	13	87
2001	9	90
2000	63	61
1999	4	95
1998	18	80
1997	47	68
1996	28	75
1995	34	72
1994	38	71
1993	53	66
1992	61	63
1991	11	89
1990	47	68
1989	41	70
1988	34	72
1987	41	70
1986	81	54
1985	81	54
1984	29	74
1983	18	80
1982	84	53
1981	75	56
1980	66	60
1979	63	61
1978	47	68
1977	70	59
1976	71	58
1975	21	79
1974	84	53
1973	23	78
1972	88	50
1971	66	60
1970	66	60
1969	54	65
1968	79	55
1967	38	71
1966	75	56
1965	63	61
1964	90	34
1963	81	54
1962	75	56
1961	59	64
1960	41	70
1959	5	93
1958	88	50
1957	50	67
1956	79	55
1955	3	96
1954	91	17
1953	41	70
1952	7	91
1951	41	70
1950	92	0
1949	92	0
1948	92	0
1947	92	0
1946	92	0
1945	92	0
1944	92	0
1943	92	0
1942	92	0
1941	92	0
1940	92	0
1939	92	0
1938	92	0
1937	92	0
1936	92	0
1935	92	0
1934	92	0
1933	92	0
1932	92	0
1931	92	0
1930	92	0
1929	92	0
1928	92	0
1927	92	0
1926	92	0
1925	92	0
1924	92	0
1923	92	0
1922	92	0
1921	92	0
1920	92	0
1919	92	0
1918	92	0
1917	92	0
1916	92	0
1915	92	0
1914	92	0
1913	92	0
1912	92	0
1911	92	0
1910	92	0
1909	92	0
1908	92	0
1907	92	0
1906	92	0
1905	92	0
1904	92	0
1903	92	0
1902	92	0
1901	92	0
1900	92	0
1899	92	0
1898	92	0
1897	92	0
1896	92	0
1895	92	0
1894	92	0
1893	92	0
1892	92	0
1891	92	0
1890	92	0
1889	92	0
1888	92	0
1887	31	73
1886	72	57
1885	66	60
1884	54	65
1883	72	57
1882	62	62
1881	27	76
1880	17	81
1879	54	65
1878	26	77
1877	7	91
1876	92	0
1875	92	0
1874	92	0
1873	72	57
1872	46	69
1871	84	53
1870	38	71
1869	87	52
1868	31	73
1867	59	64

Weather Station Details

Years	Station	Coordinates
1950–2024	Cornwall	location
1867–1887	Cornwall	location