Number of Days of 35 °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 35 degrees Celsius in Cornwall, Ontario, between 1867 and 2024.

Also see:

Which year had the most 35° days?

Based on NOAA records, the year 1955 holds the record for the most 35 °C days in Cornwall history. There were 7 days with a high temperature of at least 35 degrees that year.

How many so far this year (2024)?

It has not reached 35 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 35° C was July 10, 2020.

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

Year	Rank	Days >= 35 °C
2024	20	0
2023	20	0
2022	20	0
2021	20	0
2020	2	5
2019	20	0
2018	2	5
2017	20	0
2016	20	0
2015	20	0
2014	20	0
2013	20	0
2012	9	1
2011	9	1
2010	9	1
2009	20	0
2008	20	0
2007	20	0
2006	20	0
2005	20	0
2004	20	0
2003	20	0
2002	9	1
2001	6	2
2000	20	0
1999	20	0
1998	20	0
1997	20	0
1996	20	0
1995	20	0
1994	20	0
1993	20	0
1992	20	0
1991	20	0
1990	20	0
1989	20	0
1988	9	1
1987	9	1
1986	20	0
1985	20	0
1984	20	0
1983	20	0
1982	20	0
1981	20	0
1980	20	0
1979	20	0
1978	20	0
1977	20	0
1976	20	0
1975	6	2
1974	20	0
1973	20	0
1972	20	0
1971	20	0
1970	20	0
1969	20	0
1968	20	0
1967	20	0
1966	20	0
1965	20	0
1964	9	1
1963	9	1
1962	20	0
1961	20	0
1960	20	0
1959	20	0
1958	20	0
1957	20	0
1956	20	0
1955	1	7
1954	20	0
1953	20	0
1952	20	0
1951	20	0
1950	20	0
1949	20	0
1948	20	0
1947	20	0
1946	20	0
1945	20	0
1944	20	0
1943	20	0
1942	20	0
1941	20	0
1940	20	0
1939	20	0
1938	20	0
1937	20	0
1936	20	0
1935	20	0
1934	20	0
1933	20	0
1932	20	0
1931	20	0
1930	20	0
1929	20	0
1928	20	0
1927	20	0
1926	20	0
1925	20	0
1924	20	0
1923	20	0
1922	20	0
1921	20	0
1920	20	0
1919	20	0
1918	20	0
1917	20	0
1916	20	0
1915	20	0
1914	20	0
1913	20	0
1912	20	0
1911	20	0
1910	20	0
1909	20	0
1908	20	0
1907	20	0
1906	20	0
1905	20	0
1904	20	0
1903	20	0
1902	20	0
1901	20	0
1900	20	0
1899	20	0
1898	20	0
1897	20	0
1896	20	0
1895	20	0
1894	20	0
1893	20	0
1892	20	0
1891	20	0
1890	20	0
1889	20	0
1888	20	0
1887	20	0
1886	20	0
1885	20	0
1884	9	1
1883	20	0
1882	20	0
1881	6	2
1880	20	0
1879	20	0
1878	20	0
1877	20	0
1876	20	0
1875	20	0
1874	20	0
1873	20	0
1872	20	0
1871	20	0
1870	5	3
1869	9	1
1868	2	5
1867	9	1

Weather Station Details

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