| Year | Rank | Days >= 40 °C |
|---|---|---|
| 2022 | 5 | 0 |
| 2021 | 5 | 0 |
| 2020 | 5 | 0 |
| 2019 | 5 | 0 |
| 2018 | 5 | 0 |
| 2017 | 1 | 1 |
| 2016 | 5 | 0 |
| 2015 | 5 | 0 |
| 2014 | 5 | 0 |
| 2013 | 5 | 0 |
| 2012 | 5 | 0 |
| 2011 | 5 | 0 |
| 2010 | 5 | 0 |
| 2009 | 5 | 0 |
| 2008 | 5 | 0 |
| 2007 | 5 | 0 |
| 2006 | 5 | 0 |
| 2005 | 1 | 1 |
| 2004 | 1 | 1 |
| 2003 | 5 | 0 |
| 2002 | 1 | 1 |
| 2001 | 5 | 0 |
| 2000 | 5 | 0 |
| 1999 | 5 | 0 |
| 1998 | 5 | 0 |
| 1997 | 5 | 0 |
| 1996 | 5 | 0 |
| 1995 | 5 | 0 |
| 1994 | 5 | 0 |
| 1993 | 5 | 0 |
| 1992 | 5 | 0 |
| 1991 | 5 | 0 |
| 1990 | 5 | 0 |
| 1989 | 5 | 0 |
| 1988 | 5 | 0 |
| 1987 | 5 | 0 |
| 1986 | 5 | 0 |
| 1985 | 5 | 0 |
| 1984 | 5 | 0 |
| 1983 | 5 | 0 |
| 1982 | 5 | 0 |
| 1981 | 5 | 0 |
| 1980 | 5 | 0 |
| 1979 | 5 | 0 |
| 1978 | 5 | 0 |
| 1977 | 5 | 0 |
| 1976 | 5 | 0 |
| 1975 | 5 | 0 |
| 1974 | 5 | 0 |
| 1973 | 5 | 0 |
| 1972 | 5 | 0 |
| 1971 | 5 | 0 |
| 1970 | 5 | 0 |
| 1969 | 5 | 0 |
| 1968 | 5 | 0 |
| 1967 | 5 | 0 |
| 1966 | 5 | 0 |
| 1965 | 5 | 0 |
| 1964 | 5 | 0 |
| 1963 | 5 | 0 |
| 1962 | 5 | 0 |
| 1961 | 5 | 0 |
| 1960 | 5 | 0 |
| 1959 | 5 | 0 |
| 1958 | 5 | 0 |
| 1957 | 5 | 0 |
| 1956 | 5 | 0 |
| 1955 | 5 | 0 |
| 1954 | 5 | 0 |
| 1953 | 5 | 0 |
| 1952 | 5 | 0 |
| 1951 | 5 | 0 |
| 1950 | 5 | 0 |
| 1949 | 5 | 0 |
| 1948 | 5 | 0 |
| 1947 | 5 | 0 |
| 1946 | 5 | 0 |
| 1945 | 5 | 0 |
| 1944 | 5 | 0 |
| 1943 | 5 | 0 |
| 1942 | 5 | 0 |
| 1941 | 5 | 0 |
| 1940 | 5 | 0 |
| 1939 | 5 | 0 |
| 1938 | 5 | 0 |
| 1937 | 5 | 0 |
| 1936 | 5 | 0 |
| 1935 | 5 | 0 |
| 1934 | 5 | 0 |
| 1933 | 5 | 0 |
| 1932 | 5 | 0 |
| 1931 | 5 | 0 |
| 1930 | 5 | 0 |
| 1929 | 5 | 0 |
| 1928 | 5 | 0 |
| 1927 | 5 | 0 |
| 1926 | 5 | 0 |
| 1925 | 5 | 0 |
| 1924 | 5 | 0 |
| 1923 | 5 | 0 |
| 1922 | 5 | 0 |
| 1921 | 5 | 0 |
| 1920 | 5 | 0 |
| 1919 | 5 | 0 |
| 1918 | 5 | 0 |
| 1917 | 5 | 0 |
| 1916 | 5 | 0 |
| 1915 | 5 | 0 |
| 1914 | 5 | 0 |
| 1913 | 5 | 0 |
| 1912 | 5 | 0 |
| 1911 | 5 | 0 |
| 1910 | 5 | 0 |
| 1909 | 5 | 0 |
| 1908 | 5 | 0 |
| 1907 | 5 | 0 |
| 1906 | 5 | 0 |
| 1905 | 5 | 0 |
| 1904 | 5 | 0 |
| 1903 | 5 | 0 |
| 1902 | 5 | 0 |
| 1901 | 5 | 0 |
| 1900 | 5 | 0 |
| 1899 | 5 | 0 |
| 1898 | 5 | 0 |
| 1897 | 5 | 0 |
| 1896 | 5 | 0 |
| 1895 | 5 | 0 |
| 1894 | 5 | 0 |
| 1893 | 5 | 0 |
| 1892 | 5 | 0 |
| 1891 | 5 | 0 |
| 1890 | 5 | 0 |
| 1889 | 5 | 0 |
| 1888 | 5 | 0 |
| 1887 | 5 | 0 |
| 1886 | 5 | 0 |
| 1885 | 5 | 0 |
| 1884 | 5 | 0 |
| 1883 | 5 | 0 |
| 1882 | 5 | 0 |
| 1881 | 5 | 0 |
| 1880 | 5 | 0 |
| 1879 | 5 | 0 |
| 1878 | 5 | 0 |
| 1877 | 5 | 0 |
| 1876 | 5 | 0 |
| 1875 | 5 | 0 |
| 1874 | 5 | 0 |
| 1873 | 5 | 0 |
| 1872 | 5 | 0 |
| 1871 | 5 | 0 |
| 1870 | 5 | 0 |
| 1869 | 5 | 0 |
| 1868 | 5 | 0 |
| 1867 | 5 | 0 |
| 1866 | 5 | 0 |
| 1865 | 5 | 0 |
| 1864 | 5 | 0 |
| 1863 | 5 | 0 |
| 1862 | 5 | 0 |
| 1861 | 5 | 0 |
| 1860 | 5 | 0 |
| 1859 | 5 | 0 |
| 1858 | 5 | 0 |
| 1857 | 5 | 0 |
| 1856 | 5 | 0 |
| 1855 | 5 | 0 |
| 1854 | 5 | 0 |
| 1853 | 5 | 0 |
| 1852 | 5 | 0 |
| 1851 | 5 | 0 |
| 1850 | 5 | 0 |
| 1849 | 5 | 0 |
| 1848 | 5 | 0 |
| 1847 | 5 | 0 |
| 1846 | 5 | 0 |
| 1845 | 5 | 0 |
| 1844 | 5 | 0 |
| 1843 | 5 | 0 |
| 1842 | 5 | 0 |
| 1841 | 5 | 0 |