Warmest Coldest 43.2 1932 21.7 1918 41.4 1990/1950 22.1 1977 40.9 1913/2006 23.0 1888 40.3 1933 23.4 1920 40.2 1937 23.7 1912/1893 40.0 1998 23.8 1875 39.9 2002 24.7 2004/1884/1881 39.6 1880 25.0 1940 38.6 1949 25.1 1970/1945 38.4 1906 25.2 1883
February
Warmest Coldest
40.6 2002/1998/1984 19.9 1934
40.1 1954 22.7 1885
40.0 1997/1991 24.1 1895
39.9 1976 24.8 1905
39.8 1990 25.2 1875
39.3 1981 25.4 1914/1904
38.9 1999 25.5 1979
38.4 1953 25.7 1936
37.9 1925 25.9 1907
37.6 1953/1890 26.2 1923
March Warmest Coldest 51.1 1945 30.0 1888 49.8 1946 30.5 1872 48.4 1921 30.6 1885 47.8 1903 32.3 1887 47.2 2000 32.4 1916 46.9 1979 32.6 1866 46.8 1977 32.7 1883 46.4 1973 33.3 1960 45.8 1985 33.4 1900 45.6 1898 34.1 1875
April
Warmest Coldest
56.9 1941 41.1 1874
56.2 1981 43.1 1875
56.1 2002/1921 46.0 1888
55.9 1969 46.1 1943
55.7 1991/2006 46.3 1887/1881
55.6 1994/1945 46.4 1893
55.5 1985 46.6 1904
55.2 1974 46.7 1907/1873
55.1 1910/2005 46.8 1940
55.0 1976/1968/1952 47.0 1876
May
Warmest Coldest
68.7 1991 54.3 1917
67.9 1880 55.2 1967/1907
67.0 1944/1896 56.6 1882
66.4 1965/1959 57.3 1924
66.0 1986 57.4 1901
65.8 1975 57.7 1869
65.7 1993 57.8 1891
65.6 1980 58.0 1888
65.4 1964/1955 58.2 1893
65.3 1985/79/69/42/18 58.4 1898
June
Warmest Coldest
76.2 1943 64.2 1903
75.4 1966 65.2 1881
75.2 1994 65.7 1916
74.5 1984 66.8 1926/1902
74.3 1957/1949/1925 67.2 1958
74.2 1971 67.3 1927
74.1 1991/1899 67.4 1928
74.0 1883/2005/2008 67.5 2009/1897
73.8 1934 67.7 1878
73.6 1953/1906 67.8 1924
July
Warmest Coldest
81.4 1999 70.7 1888
80.8 1955 71.9 1884
80.3 1952 72.1 1914
80.1 1993 72.3 2000/1871
80.0 1908 72.4 1891
79.7 1966 72.6 1895
79.6 1949 72.7 2009
79.5 1983 72.8 1902/1869
79.4 1994/1944 72.9 1956
79.3 1988/1980 73.1 1890
August
Warmest Coldest
80.3 1980 68.5 1927
79.7 2005 69.1 1903
78.8 1988 70.0 1887
78.7 2001 70.2 1886
78.5 1995 70.3 1874
78.2 1938 70.4 1883
78.1 1955 70.6 1894/1889
78.0 1939 70.9 1946
77.8 1944 71.1 1919
77.7 2002/1983 71.4 1940
September
Warmest Coldest
73.5 1961 60.8 1871
73.3 1881/2005 61.8 1887
72.3 1931/1959 62.6 1883
72.2 1891 62.8 1888
72.1 1921 63.1 1963
72.0 1930 63.3 1893/1879
71.8 1983/1884 63.6 1917
71.7 1895 63.7 1876
71.5 1971 63.9 1918
70.9 1898/1900 64.0 1875
October
Warmest Coldest
63.6 2007/1947 48.6 1888
63.1 1949 49.7 1889
62.7 1971 50.6 1925/1876
61.9 1990 50.9 1869
61.8 1984/1963 52.2 1887/1883
61.7 1954/1946 52.5 1895
61.6 1995 52.7 1907
61.5 1900 52.8 1988
61.2 1931 52.9 1976
61.1 1961/1920 53.0 1917/1892
November Warmest Coldest 52.7 2001 37.0 1873 52.5 1979 38.9 1880 52.4 1948 38.8 1871 52.3 1975 39.0 1882 51.9 2006/1994/1931 39.3 1875 51.5 1902 39.7 1901 51.1 2009 40.3 1869 50.8 1999 41.0 1872 50.4 1982/1946 41.2 1887 50.3 1963/1990 41.3 1894
December Warmest Coldest 44.1 2001 24.9 1876 43.8 1984 25.0 1917 43.6 2006 25.9 1989 43.2 1998 26.5 1880 42.8 1982 26.7 1872 42.6 1990 28.9 1926 42.3 1891 29.2 1871 42.2 1994 29.4 1958 42.0 1923 29.6 1886 41.3 1996/1953 29.7 1955