Climate Summary for December

Station: Philadelphia (366889) State: Pennsylvania Period of Record: 12/1940-12/2016 (# of years included = 77) Temperature Precipitation EXTREMES EXTREMES Greatest Daily Greatest | Cumulative Chance Chance Day Average Average | Highest Yr Lowest Yr || amount snowfall | average >=.01" >=.1" Max (F) Min (F) | (F) (F) || Inches Yr Inches Yr | precip(in) precip snow 1 50 34 | 72 2006* 14 1976 || 1.09 2010 0.1 1969 | 0.12 0.27 0.01 2 49 34 | 66 1970 14 1946 || 1.48 1986 0.0 2014* | 0.25 0.21 0.00 3 49 34 | 68 1950 9 1976 || 1.60 1967 1.5 1957 | 0.37 0.25 0.03 4 49 34 | 73 1998 12 1966* || 1.29 1983 5.5 1957 | 0.50 0.31 0.03 5 48 33 | 71 2001 21 1976* || 1.52 1993 7.0 2002 | 0.62 0.42 0.09 6 48 33 | 72 2001 19 1940 || 1.16 1996 3.3 2005 | 0.75 0.39 0.05 7 48 32 | 73 1998 16 2002 || 2.04 2011 2.8 1959 | 0.87 0.29 0.04 8 47 32 | 67 1980 17 1977* || 1.22 1972 8.6 2013 | 0.99 0.29 0.04 9 47 32 | 70 1966 14 1960 || 2.13 2009 2.9 1942 | 1.12 0.38 0.10 10 46 32 | 71 1966 12 1977* || 1.45 1969 2.2 2013 | 1.25 0.36 0.04 11 46 31 | 65 1971 10 1968 || 2.72 2008 3.7 1960 | 1.37 0.43 0.06 12 46 31 | 69 2015 8 1988 || 1.45 1983 10.9 1960 | 1.50 0.39 0.05 13 45 31 | 71 2015 8 1960 || 2.90 1941 1.9 1966 | 1.62 0.42 0.04 14 45 30 | 70 2015 10 1960 || 1.92 1996 5.3 1951 | 1.74 0.34 0.12 15 45 30 | 69 2015 7 1960 || 0.96 1948 2.6 1968 | 1.85 0.34 0.08 16 44 30 | 68 1971 11 1945* || 1.54 1974 3.5 1973 | 1.97 0.39 0.08 17 44 30 | 65 2000 8 1951 || 0.92 2015 0.3 1973 | 2.08 0.29 0.05 18 44 29 | 70 2006 10 1960 || 1.72 1977 1.8 1942 | 2.19 0.23 0.09 19 44 29 | 63 1957 10 1960 || 1.70 2009 22.5 2009 | 2.30 0.27 0.13 20 43 29 | 64 1957 1 1942 || 1.32 1951 3.2 1966 | 2.41 0.31 0.08 21 43 29 | 67 2013 1 1942 || 1.28 2012 2.7 1962 | 2.52 0.38 0.10 22 43 28 | 68 2013 6 1989 || 1.77 1983 0.7 1975 | 2.63 0.34 0.08 23 43 28 | 70 2015 7 1989 || 1.55 2015 5.2 1963 | 2.75 0.38 0.06 24 42 28 | 71 2015 3 1983 || 1.74 2003 12.4 1966 | 2.86 0.39 0.09 25 42 28 | 68 2015* 1 1983* || 1.11 1945 4.1 1969 | 2.97 0.35 0.08 26 42 28 | 68 1964 3 1983 || 1.80 2009 11.6 2010 | 3.08 0.35 0.09 27 42 27 | 65 2015 8 1989 || 1.55 1964 3.4 1990 | 3.18 0.29 0.08 28 42 27 | 66 2008 9 1950 || 1.45 1942 3.0 1990 | 3.28 0.32 0.06 29 41 27 | 72 1984 13 1977 || 1.19 2013 3.8 1962 | 3.38 0.44 0.10 30 41 27 | 65 1990 4 1962 || 2.30 1948 9.0 2000 | 3.47 0.32 0.04 31 41 27 | 63 1992 3 1962 || 0.71 1975 3.8 1967 | 3.56 0.34 0.08 * - Asterisk indicates that the record was also reached in previous years.