The following list shows the readings of the maximum and minimum temperatures for each year from 1862 to the present, recorded in the weather station of the Collegio Romano in Rome, established in 1788. [1] The station, actually located in the Italian territory, was opened when Rome was part of the Papal States. The first weather station in the Vatican state [2] was opened only in 2009, and is placed in the Palace of the Governorate of Vatican City. [3]
Year by Year Temperature Extremes
| Year | Extreme Maximum | Extreme Minimum | |||
|---|---|---|---|---|---|
| Temperature | Date | Temperature | Date | Extremeness | |
| 2012 | 98.4 °F / 36.9 °C | July 30 | 28 °F / −2.2 °C | February 14 | 70.4 / 39.1 |
| 2011 | 98.7 °F / 37.1 °C | July 13 | 30.9 °F / −0.6 °C | January 25 | 67.8 / 37.7 |
| 2010 | 97.5 °F / 36.4 °C | July 16 | 24.8 °F / −4 °C | December 17 | 72.7 / 40.4 |
| 2009 | 96 °F / 35.6 °C | July 24 | 28.4 °F / −2 °C | December 21 | 67.6 / 37.6 |
| 2008 | 94.1 °F / 34.5 °C | August 2 | 28.5 °F / −1.9 °C | February 18 | 65.6 / 36.4 |
| 2007 | 102 °F / 38.9 °C | August 25 | 29.8 °F / −1.2 °C | December 16 | 72.2 / 40.1 |
| 2006 | 97.8 °F / 36.6 °C | June 29 | 29.8 °F / −1.2 °C | January 25 | 68 / 37.8 |
| 2005 | 102.3 °F / 39.1 °C | July 29 | 27.3 °F / −2.6 °C | March 2 | 75 / 41.7 |
| 2004 | 96.4 °F / 35.8 °C | July 23 | 30 °F / −1.1 °C | January 25 | 66.4 / 36.9 |
| 2003 | 101.8 °F / 38.8 °C | August 6 | 30.3 °F / −0.9 °C | February 3 | 71.5 / 39.7 |
| 2002 | 96.2 °F / 35.7 °C | June 23 | 29.8 °F / −1.2 °C | January 7 | 66.4 / 36.9 |
| 2001 | 97.1 °F / 36.2 °C | August 4 | 31.1 °F / −0.5 °C | December 20 | 66 / 36.7 |
| 2000 | 101.8 °F / 38.8 °C | August 24 | 29.8 °F / −1.2 °C | January 27 | 72 / 40 |
| 1999 | 99.5 °F / 37.5 °C | August 11 | 29.3 °F / −1.5 °C | January 31 | 70.2 / 39 |
| 1998 | 100.2 °F / 37.9 °C | August 4 | 30.9 °F / −0.6 °C | December 9 | 69.3 / 38.5 |
| 1997 | 95 °F / 35 °C | August 11 | 37 °F / 2.8 °C | February 3 | 58 / 32.2 |
| 1996 | 95.5 °F / 35.3 °C | July 28 | 28.9 °F / −1.7 °C | December 28 | 66.6 / 37 |
| 1995 | 97.1 °F / 36.2 °C | July 21 | 30.9 °F / −0.6 °C | January 17 | 66.2 / 37 |
| 1994 | 98 °F / 36.7 °C | August 7 | 33.9 °F / 1.1 °C | February 15 | 64.1 / 35.6 |
| 1993 | 99.3 °F / 37.4 °C | August 4 | 29.1 °F / −1.6 °C | January 3 | 70.2 / 39 |
| 1992 | 100.2 °F / 37.9 °C | August 7 | 32.9 °F / 0.5 °C | January 2 | 67.3 / 37.4 |
| 1991 | 95.1 °F / 35.1 °C | August 11 | 30 °F / −1.1 °C | December 14 | 65.1 / 36.2 |
| 1990 | 96.4 °F / 35.8 °C | August 2 | 32.7 °F / 0.4 °C | January 13 | 63.7 / 35.4 |
| 1989 | 93.2 °F / 34 °C | August 18 | 30.3 °F / −0.9 °C | January 1 | 62.9 / 34.9 |
| 1988 | 96.8 °F / 35 °C | July 26 | 32 °F / 0.0 °C | December 17 | 64.8 / 35 |
| 1987 | 96.4 °F / 35.8 °C | July 24 | 26.6 °F / −2 °C | January 9 | 69.8 / 37.8 |
| 1986 | 93.2 °F / 34 °C | August 3 | 29.8 °F / −1.2 °C | December 26 | 63.4 |
| 1985 | 95.3 °F / 35.2 °C | July 21 | 22.1 °F / −5.5 °C | January 11 | 73.2 / 40.7 |
| 1984 | 93.9 °F / 34.4 °C | July 13 | 31.6 °F / −0.2 °C | February 19 | 62.3 / 34.6 |
| 1983 | 102.2 °F / 39 °C | July 28 | 30.2 °F / −1 °C | February 24 | 72 / 40 |
| 1982 | 98.9 °F / 37.2 °C | June 25 | 32 °F / 0.0 °C | February 3 | 66.9 / 37.2 |
| 1981 | 98.6 °F / 37 °C | August 4 | 26.6 °F / −2 °C | January 10 | 72 / 39 |
| 1980 | 92.4 °F / 33.6 °C | August 3 | 28.4 °F / −2 °C | January 4 | 64 / 35.6 |
| 1979 | 92.8 °F / 33.8 °C | July 31 | 23.7 °F / −4.6 °C | January 3 | 69.1 / 38.4 |
| 1978 | 92.4 °F / 33.6 °C | July 14 | 31.2 °F / −0.4 °C | January 9 | 61.2 / 34 |
| 1977 | 90.6 °F / 32.6 °C | July 30 | 30.9 °F / −0.6 °C | December 20 | 59.7 / 33.2 |
| 1976 | 90.6 °F / 32.6 °C | July 17 | 30.5 °F / −0.8 °C | January 29 | 60.1 / 33.4 |
| 1975 | 98.2 °F / 36.8 °C | July 18 | 31.6 °F / −0.2 °C | January 10 | 66.6 / 37 |
| 1974 | 95.1 °F / 35.1 °C | August 4 | 32 °F / 0.0 °C | December 24 | 63.1 / 35.1 |
| 1973 | 92.1 °F / 33.4 °C | July 4 | 27.1 °F / −2.7 °C | November 29 | 65 / 36.1 |
| 1972 | 95.3 °F / 35.2 °C | August 14 | 31.6 °F / −0.2 °C | December 19 | 63.7 / 35.4 |
| 1971 | 95.1 °F / 35.1 °C | August 8 | 28 °F / −2.2 °C | March 3 | 67.1 / 37.3 |
| 1970 | 94.6 °F / 34.8 °C | July 23 | 30.2 °F / −1 °C | February 17 | 64.4 / 35.8 |
| 1969 | 92.4 °F / 33.6 °C | August 14 | 28.7 °F / −1.8 °C | February 12 | 63.7 / 35.4 |
| 1968 | 96.4 °F / 35.8 °C | July 10 | 23.7 °F / −4.6 °C | January 14 | 72.7 / 40.4 |
| 1967 | 97.1 °F / 36.2 °C | July 24 | 25.8 °F / −3.4 °C | February 11 | 71.3 / 39.6 |
| 1966 | 94.2 °F / 34.6 °C | August 12 | 28.9 °F / −1.7 °C | January 9 | 65.3 / 36.3 |
| 1965 | 97.5 °F / 36.4 °C | June 26 | 28.4 °F / −2 °C | February 18 | 69.1 / 38.4 |
| 1964 | 95.3 °F / 35.2 °C | July 18 | 28 °F / −2.2 °C | February 9 | 67.3 / 37.4 |
| 1963 | 92.8 °F / 33.8 °C | June 28 | 25.3 °F / −3.7 °C | January 30 | 67.5 / 37.5 |
| 1962 | 95.3 °F / 35.2 °C | July 28 | 28.7 °F / −1.8 °C | January 30 | 66.6 / 37 |
| 1961 | 95.3 °F / 35.2 °C | June 20 | 27.6 °F / −2.4 °C | December 17 | 67.7 / 37.6 |
| 1960 | 93.2 °F / 34 °C | August 28 | 30.9 °F / −0.6 °C | January 14 | 62.3 / 34.6 |
| 1959 | 92.8 °F / 33.8 °C | July 28 | 30.5 °F / −0.8 °C | January 11 | 62.3 / 34.6 |
| 1958 | 96.8 °F / 35 °C | August 2 | 30.5 °F / −0.8 °C | January 30 | 66.3 / 35.8 |
| 1957 | 97.8 °F / 36.6 °C | August 12 | 30.9 °F / −0.6 °C | January 15 | 66.9 / 37.2 |
| 1956 | 103.8 °F / 39.9 °C | August 8 | 21.2 °F / −6 °C | February 16 | 82.6 / 45.9 |
| 1955 | 95.5 °F / 35.3 °C | July 20 | 30.2 °F / −1 °C | November 28 | 65.3 / 36.3 |
| 1954 | 94.6 °F / 34.8 °C | June 30 | 26.6 °F / −2 °C | January 26 | 68 / 36.8 |
| 1953 | 97.5 °F / 36.4 °C | July 18 | 28.9 °F / −1.7 °C | February 5 | 68.6 / 38.1 |
| 1952 | 97.7 °F / 36.5 °C | July 6 | 30.5 °F / −0.8 °C | January 21 | 67.2 / 37.3 |
| 1951 | 93.2 °F / 34 °C | August 4 | 32 °F / 0.0 °C | December 13 | 61.2 / 34 |
| 1950 | 97.1 °F / 36.2 °C | July 5 | 29.8 °F / −1.2 °C | January 3 | 67.3 / 37.4 |
| 1949 | 91.7 °F / 33.2 °C | August 6 | 25.5 °F / −3.6 °C | March 5 | |
| 1948 | 91.4 °F / 33 °C | August 8 | 27.6 °F / −2.4 °C | December 27 | |
| 1947 | 97.1 °F / 36.2 °C | August 4 | 26.6 °F / −2 °C | January 6 | |
| 1946 | 96.8 °F / 35 °C | August 6 | 28.7 °F / −1.8 °C | February 14 | |
| 1945 | 97.8 °F / 36.6 °C | July 30 | 26.6 °F / −2 °C | January 23 | |
| 1944 | 94.6 °F / 34.8 °C | August 23 | 27.3 °F / −2.6 °C | February 14 | |
| 1943 | 95.7 °F / 35.4 °C | August 18 | 29.8 °F / −1.2 °C | January 11 | |
| 1942 | 95 °F / 35 °C | July 10 | 22.6 °F / −5.2 °C | January 24 | |
| 1941 | 95 °F / 35 °C | July 26 | 22.6 °F / −5.2 °C | December 30 | |
| 1940 | 93.5 °F / 34.2 °C | August 10 | 26.9 °F / −2.8 °C | February 15 | |
| 1939 | 99.1 °F / 37.3 °C | July 19 | 23 °F / −5 °C | December 31 | |
| 1938 | 96.9 °F / 36.1 °C | July 30 | 24.4 °F / −4.2 °C | January 7 | |
| 1937 | 94.4 °F / 34.7 °C | July 31 | 31.6 °F / −0.2 °C | January 12 | |
| 1936 | 95.3 °F / 35.2 °C | July 18 | 29.1 °F / −1.6 °C | December 29 | |
| 1935 | 96.2 °F / 35.7 °C | June 26 | 25.8 °F / −3.4 °C | January 21 | |
| 1934 | 94.1 °F / 34.5 °C | July 21 | 31.1 °F / −0.5 °C | January 12 | |
| 1933 | 96.8 °F / 35 °C | July 15 | 32.1 °F / 0.1 °C | January 24 | |
| 1932 | 98.6 °F / 37 °C | August 18 | 27.3 °F / −2.6 °C | February 22 | |
| 1931 | 96.2 °F / 35.7 °C | August 5 | 27.1 °F / −2.7 °C | December 27 | |
| 1930 | 95.9 °F / 35.5 °C | July 8 | 33.2 °F / 0.7 °C | January 5 | |
| 1929 | 97.8 °F / 36.6 °C | July 22 | 22.2 °F / −5.4 °C | February 3 | |
| 1928 | 99.3 °F / 37.4 °C | August 3 | 29.3 °F / −1.5 °C | January 2 | |
| 1927 | 96.6 °F / 35.9 °C | August 9 | 23 °F / −5 °C | December 19 | |
| 1926 | 91 °F / 32.8 °C | July 20 | 28.7 °F / −1.8 °C | January 13 | |
| 1925 | 95.1 °F / 35.1 °C | July 22 | 26.2 °F / −3.2 °C | December 19 | |
| 1924 | 96 °F / 35.6 °C | July 5 | 28.4 °F / −2 °C | January 3 | |
| 1923 | 97.3 °F / 36.3 °C | August 12 | 27.6 °F / −2.4 °C | December 23 | |
| 1922 | 99.1 °F / 37.3 °C | August 9 | 28.4 °F / −2 °C | January 14 | |
| 1921 | 95 °F / 35 °C | July 27 | 30.7 °F / −0.7 °C | December 18 | |
| 1920 | 96.4 °F / 35.8 °C | July 20 | 30.2 °F / −1 °C | February 10 | |
| 1919 | 91.2 °F / 32.9 °C | August 14 | 24.9 °F / −3.9 °C | February 10 | |
| 1918 | 93.9 °F / 34.4 °C | July 18 | 28.2 °F / −2.1 °C | January 11 | |
| 1917 | 93.3 °F / 34.1 °C | August 1 | 27.8 °F / −2.3 °C | December 7 | |
| 1916 | 95.5 °F / 35.3 °C | July 10 | 32.3 °F / 0.2 °C | January 27 | |
| 1915 | 90.3 °F / 32.4 °C | July 13 | 28.7 °F / −1.8 °C | February 1 | |
| 1914 | 89.6 °F / 32 °C | June 30 | 27.8 °F / −2.3 °C | January 3 | |
| 1913 | 91.7 °F / 33.2 °C | August 20 | 28.4 °F / −2 °C | February 17 | |
| 1912 | 90.6 °F / 32.6 °C | July 15 | 30.7 °F / −0.7 °C | December 10 | |
| 1911 | 95.3 °F / 35.2 °C | July 31 | 24.8 °F / −4 °C | February 2 | |
| 1910 | 90.1 °F / 32.3 °C | July 23 | 30.3 °F / −0.9 °C | December 24 | |
| 1909 | 93.9 °F / 34.4 °C | July 30 | 28.4 °F / −2 °C | February 3 | |
| 1908 | 90.1 °F / 32.3 °C | August 1 | 28.5 °F / −1.9 °C | January 14 | |
| 1907 | 95.1 °F / 35.1 °C | August 8 | 26.9 °F / −2.8 °C | January 1 | |
| 1906 | 93.9 °F / 34.4 °C | August 4 | 29.6 °F / −1.3 °C | February 3 | |
| 1905 | 104.1 °F / 40.1 °C | July 3 | 23 °F / −5 °C | January 4 | |
| 1904 | 95.3 °F / 35.2 °C | July 18 | 28.4 °F / −2 °C | December 1 | |
| 1903 | 95.1 °F / 35.1 °C | July 19 | 28 °F / −2.2 °C | January 20 | |
| 1902 | 93.3 °F / 34.1 °C | August 31 | 29.6 °F / −1.3 °C | December 25 | |
| 1901 | 96 °F / 35.6 °C | July 30 | 25.8 °F / −3.4 °C | February 15 | |
| 1900 | 91.9 °F / 33.3 °C | July 22 | 30 °F / −1.1 °C | December 18 | |
| 1899 | 92.6 °F / 33.7 °C | July 24 | 29.8 °F / −1.2 °C | December 11 | |
| 1898 | 93.5 °F / 34.2 °C | August 23 | 28 °F / −2.2 °C | December 26 | |
| 1897 | 97.7 °F / 36.5 °C | July 2 | 27.3 °F / −2.6 °C | December 24 | |
| 1896 | 94.8 °F / 34.9 °C | August 6 | 28.2 °F / −2.1 °C | January 27 | |
| 1895 | 93.5 °F / 34.2 °C | July 4 | 22.8 °F / −5.1 °C | February 18 | |
| 1894 | 97.5 °F / 36.4 °C | July 25 | 26.2 °F / −3.2 °C | January 1 | |
| 1893 | 94.4 °F / 34.7 °C | August 24 | 22.1 °F / −5.5 °C | January 14 | |
| 1892 | 95 °F / 35 °C | July 31 | 25.1 °F / −3.8 °C | December 7 | |
| 1891 | 92.1 °F / 33.4 °C | July 20 | 23 °F / −5 °C | January 20 | |
| 1890 | 96.2 °F / 35.7 °C | August 24 | 27.1 °F / −2.7 °C | December 16 | |
| 1889 | 93.7 °F / 34.3 °C | July 13 | 27.8 °F / −2.3 °C | January 6 | |
| 1888 | 93.7 °F / 34.3 °C | August 15 | 26.9 °F / −2.8 °C | January 22 | |
| 1887 | 99.1 °F / 37.3 °C | July 23 | 24.8 °F / −4 °C | February 19 | |
| 1886 | 93 °F / 33.9 °C | July 23 | 29.3 °F / −1.5 °C | March 12 | |
| 1885 | 98 °F / 36.7 °C | August 7 | 26.4 °F / −3.1 °C | December 14 | |
| 1884 | 96.8 °F / 35 °C | July 18 | 27.5 °F / −2.5 °C | January 4 | |
| 1883 | 94.1 °F / 34.5 °C | July 13 | 24.2 °F / −4.3 °C | January 26 | |
| 1882 | 90.6 °F / 32.6 °C | July 22 | 26.2 °F / −3.2 °C | February 4 | |
| 1881 | 95.7 °F / 35.4 °C | August 24 | 29.3 °F / −1.5 °C | February 15 | |
| 1880 | 96.9 °F / 36.1 °C | July 21 | 21.7 °F / −5.7 °C | January 22 | |
| 1879 | 95.5 °F / 35.3 °C | August 3 | 25.5 °F / −3.6 °C | December 12 | |
| 1878 | 94.2 °F / 34.6 °C | August 31 | 27.5 °F / −2.5 °C | January 29 | |
| 1877 | 97.5 °F / 36.4 °C | August 26 | 26.6 °F / −2 °C | March 4 | |
| 1876 | 93.2 °F / 34 °C | August 7 | 22.8 °F / −5.1 °C | January 6 | |
| 1875 | 91.9 °F / 33.3 °C | July 6 | 24.8 °F / −4 °C | February 9 | |
| 1874 | 94.8 °F / 34.9 °C | July 9 | 25.5 °F / −3.6 °C | January 1 | |
| 1873 | 96.2 °F / 35.7 °C | July 31 | 28.4 °F / −2 °C | December 31 | |
| 1872 | 93.9 °F / 34.4 °C | July 30 | 28.4 °F / −2 °C | January 3 | |
| 1871 | 93.2 °F / 34 °C | July 24 | 25.1 °F / −3.8 °C | December 10 | |
| 1870 | 93.3 °F / 34.1 °C | July 11 | 23.3 °F / −4.8 °C | January 29 | |
| 1869 | 95.3 °F / 35.2 °C | July 31 | 21.2 °F / −6 °C | January 23 | |
| 1868 | 94.1 °F / 34.5 °C | August 16 | 30.9 °F / −0.6 °C | February 19 | |
| 1867 | 93.7 °F / 34.3 °C | July 16 | 26.6 °F / −2 °C | December 29 | |
| 1866 | 93.7 °F / 34.3 °C | July 17 | 29.8 °F / −1.2 °C | December 25 | |
| 1865 | 97.3 °F / 36.3 °C | August 26 | 26.9 °F / −2.8 °C | February 25 | |
| 1864 | 95.1 °F / 35.1 °C | July 13 | 23 °F / −5 °C | January 18 | |
| 1863 | 95.3 °F / 35.2 °C | August 9 | 29.8 °F / −1.2 °C | February 17 | |
| 1862 | 93.2 °F / 34 °C | July 30 | 25.1 °F / −3.8 °C | January 8 | |