Highest Temperatures in Cornwall by Year

Here is a list and chart of the hottest annual temperatures recorded in Cornwall, Ontario for each year between 1872 and 2024.

Year	Temperature
2024	24.0 °C
2023	34.5 °C
2022	34.0 °C
2021	34.0 °C
2020	37.5 °C
2019	34.0 °C
2018	35.5 °C
2017	32.5 °C
2016	34.0 °C
2015	33.5 °C
2014	32.5 °C
2013	33.5 °C
2012	35.5 °C
2010	35.0 °C
2009	33.5 °C
2008	32.0 °C
2006	34.5 °C
2005	34.0 °C
2004	33.0 °C
2003	32.5 °C
2002	36.0 °C
2001	36.5 °C
2000	31.0 °C
1999	34.5 °C
1998	32.5 °C
1997	32.5 °C
1996	32.5 °C
1995	33.5 °C
1994	34.5 °C
1993	34.0 °C
1992	30.5 °C
1991	34.5 °C
1990	34.0 °C
1989	32.5 °C
1988	35.0 °C
1987	35.0 °C
1986	32.0 °C
1985	33.0 °C
1984	32.0 °C
1983	33.0 °C
1982	32.5 °C
1981	33.0 °C
1980	31.0 °C
1979	33.0 °C
1978	33.0 °C
1977	33.0 °C
1976	31.1 °C
1975	35.6 °C
1974	30.6 °C
1973	32.8 °C
1972	31.7 °C
1971	32.2 °C
1970	31.7 °C
1969	32.2 °C
1968	32.2 °C
1967	31.7 °C
1966	33.9 °C
1965	32.2 °C
1963	35.0 °C
1962	32.8 °C
1961	31.1 °C
1960	32.2 °C
1959	33.3 °C
1958	31.7 °C
1957	32.2 °C
1956	31.7 °C
1955	35.6 °C
1953	34.4 °C
1952	32.8 °C
1951	31.1 °C
1887	34.4 °C
1886	32.8 °C
1885	31.1 °C
1884	35.0 °C
1883	30.6 °C
1882	34.4 °C
1881	37.2 °C
1880	32.8 °C
1879	32.8 °C
1878	33.9 °C
1877	33.3 °C
1873	31.7 °C
1872	33.3 °C

Weather Station Details

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