Climate Summary for May

Station: Philadelphia (366889) State: Pennsylvania Period of Record: 3/1872-3/2011 (# of years included = 137) Temperature Precipitation EXTREMES EXTREMES Greatest Daily Greatest | Cumulative Chance Chance Day Average Average | Highest Yr Lowest Yr || amount snowfall | average >=.01 in >=.1 in Max (F) Min (F) | (F) (F) || Inches Yr Inches Yr | precip(in) precip snow 1 68.9 49.0 | 90 1942 34 1978 || 1.77 1976 0.0 | 0.08 0.36 0.00 2 69.2 49.5 | 89 2010 35 1960 || 2.49 1989 0.0 | 0.17 0.29 0.00 3 68.7 49.3 | 90 2001* 35 1986* || 1.36 1985 0.0 | 0.31 0.35 0.00 4 68.6 49.2 | 91 2001 35 1957 || 1.88 1921 0.0 | 0.43 0.35 0.00 5 70.2 50.0 | 90 1928 33 1966 || 1.81 1948 0.0 | 0.54 0.34 0.00 6 71.2 51.2 | 90 1986 36 1891 || 2.00 1956 0.0 | 0.68 0.39 0.00 7 70.9 51.2 | 94 1930 35 1970 || 2.69 1908 0.0 | 0.83 0.28 0.00 8 69.8 51.0 | 93 1936 37 1947 || 1.42 1998 0.0 | 0.95 0.40 0.00 9 71.3 51.0 | 93 1936 33 1947 || 1.57 2008 0.0 | 1.09 0.39 0.00 10 72.3 51.8 | 93 1896 33 1966 || 1.35 1989 0.0 | 1.20 0.33 0.00 11 71.8 52.2 | 93 1896 28 1966 || 1.82 1981 0.0 | 1.32 0.32 0.00 12 72.0 52.3 | 91 1881 37 1962 || 1.58 1943 0.0 | 1.45 0.40 0.00 13 72.2 52.7 | 92 1881 37 1967 || 1.40 1948 0.0 | 1.55 0.33 0.00 14 71.9 52.7 | 92 1956 40 1996 || 1.48 1930 0.0 | 1.69 0.34 0.00 15 72.6 53.3 | 93 1900 39 1966 || 1.40 1981 0.0 | 1.80 0.36 0.00 16 72.4 53.4 | 90 1998* 40 1984* || 2.03 1940 0.0 | 1.99 0.41 0.00 17 73.2 53.6 | 92 1974 37 1956 || 1.33 1985 0.0 | 2.08 0.34 0.00 18 72.9 54.3 | 94 1962 41 1973 || 1.47 2002 0.0 | 2.21 0.35 0.00 19 74.0 54.5 | 96 1962 41 1882 || 2.36 1900 0.0 | 2.35 0.36 0.00 20 74.0 55.0 | 94 1996* 43 2002 || 1.64 1969 0.0 | 2.49 0.45 0.00 21 74.2 55.6 | 95 1934 41 2002 || 2.94 1894 0.0 | 2.70 0.41 0.00 22 75.6 55.9 | 96 1941 43 1895 || 1.67 1947 0.0 | 2.85 0.40 0.00 23 75.1 55.6 | 96 1925 41 1961 || 1.77 1951 0.0 | 2.96 0.44 0.00 24 74.4 55.4 | 90 2004* 40 1963 || 2.49 1999 0.0 | 3.12 0.36 0.00 25 74.1 56.0 | 96 1991 40 1963 || 1.77 1952 0.0 | 3.24 0.37 0.00 26 74.4 56.7 | 96 1880 43 1961 || 1.70 2003 0.0 | 3.37 0.36 0.00 27 75.4 56.6 | 95 1991 42 1961 || 3.16 1918 0.0 | 3.53 0.36 0.00 28 76.2 56.5 | 94 1941 41 1961 || 2.28 1982 0.0 | 3.66 0.32 0.00 29 76.4 57.1 | 95 1991 42 1884 || 2.25 1990 0.0 | 3.79 0.28 0.00 30 77.0 57.7 | 97 1991 41 1961 || 1.74 1908 0.0 | 3.90 0.32 0.00 31 78.1 58.9 | 97 1991 42 1965 || 1.65 1993 0.0 | 4.00 0.33 0.00 * - Asterisk indicates that the record was also reached in previous years.