Figure 1. Mean monthly temperature at Cleveland for July, 1855-2012. The temperature has been increasing at a trend of +0.9F per century.

1955 79.1 1960 67.6
2012 78.0 2000 68.0
1868 77.7 1891 68.0
2011 77.6 1884 68.6
1949 77.6 1882 68.6
1921 76.8 1984 68.7
1952 76.5 1965 69.0
1931 76.3 1895 69.0
1999 76.2 1871 69.0
1935 76.2 1924 69.2
1901 76.2 1920 69.2

Table 1. Top ten warmest and coldest Julys on record at Cleveland.

Figure 2. Mean monthly temperature at Cleveland for August, 1855-2011. The temperature has been increasing at a trend of +1.3F per century.

1995 77.8 1927 65.4
1947 77.8 1866 65.4
1959 76.1 1963 66.7
1955 76.1 1875 66.8
1938 75.0 1885 67.0
2010 74.9 1883 67.0
1900 74.7 1915 67.1
1918 74.5 1904 67.1
1937 74.4 1897 67.1
1988 74.2 1856 67.1

Table 2. Top ten warmest and coldest Augusts on record at Cleveland.

Figure 3. Mean monthly temperature at Cleveland for September, 1855-2011. The temperature has been increasing at a trend of +0.5F per century. The trend is slightly less than for other months, possibly due to the lakeside exposure in earlier years. The lake is near its annual maximum temperature during the late summer.

1881 72.4 1918 58.2
1931 69.8 1975 58.6
1865 69.7 1871 59.0
1978 69.2 1868 59.7
1921 69.0 1883 59.8
1959 68.9 1974 59.9
2002 68.7 1949 60.0
1961 68.5 1963 60.3
1933 68.2 1924 60.4
1936 68.0 1876 60.4

Table 3. Top ten warmest and coldest Septembers on record at Cleveland.

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