Sunday, September 9, 2007

Winter NAO, Temperature, and Snowfall Data for Philadelphia

A couple of notes on the data:

(1) The year listed is for the December of that year. For 1950 for instance, it is the winter of 1950-1951.
(2) NAO data goes back to 1950.
(3) Philadelphia average temperature and snowfall is 34.8 degrees and 20.2 inches of snow between 1971 and 2000.
(4) Average December temperature is 37.4 degrees. Average January temperature is 32.9 degrees. Average February temperature is 35.7 degrees.

Year DEC TEMP JAN TEMP FEB TEMP WINTER NAO WINTER TEMP Winter Snow
1950 -1.02 34.2 0.08 36.0 0.70 36.4 -0.08 35.5 4.6
1951 1.32 38.7 0.93 37.3 -0.83 38.2 0.47 38.1 16.2
1952 -0.43 38.5 0.33 38.0 -0.49 38.9 -0.20 38.5 16.8
1953 -0.47 39.4 0.37 31.7 0.74 41.2 0.21 37.4 22.6
1954 0.69 36.0 -1.84 32.6 -1.12 36.1 -0.76 34.9 12.1
1955 0.17 30.5 -0.22 32.1 -1.12 37.6 -0.39 33.4 23.0
1956 0.10 41.7 1.05 29.2 0.11 37.4 0.42 36.1 7.9
1957 0.12 39.4 -0.54 31.8 -1.06 28.2 -0.49 33.1 41.8
1958 -0.70 29.4 -0.87 31.6 0.68 33.3 -0.30 31.4 5.1
1959 0.44 38.2 -1.29 34.2 -1.89 35.4 -0.91 35.9 21.8
1960 0.06 27.6 0.41 25.0 0.45 34.0 0.31 28.9 49.1
1961 -1.48 31.0 0.61 30.0 0.55 30.4 -0.11 30.5 29.2
1962 -1.32 31.0 -2.12 27.5 -0.96 26.5 -1.47 28.3 20.5
1963 -1.92 27.9 -0.95 33.0 -1.43 31.8 -1.43 30.9 32.9
1964 -0.15 37.5 -0.12 29.2 -1.55 33.3 -0.61 33.3 26.2
1965 1.37 37.0 -1.74 29.1 -1.39 31.5 -0.59 32.5 27.4
1966 0.72 35.5 -0.89 36.0 0.19 29.0 0.01 33.5 44.3
1967 -0.45 38.5 0.13 28.9 -1.29 30.4 -0.54 32.6 15.9
1968 -1.40 32.3 -0.83 29.8 -1.55 32.0 -1.26 31.4 23.7
1969 -0.28 33.5 -1.50 24.5 0.64 33.1 -0.38 30.4 20.3
1970 -1.20 35.8 -1.13 27.8 0.24 36.1 -0.70 33.2 18.3
1971 0.60 41.6 0.27 35.1 0.32 32.4 0.40 36.4 12.2
1972 0.19 39.9 0.04 34.4 0.85 33.6 0.36 36.0 0.0
1973 0.32 38.6 1.34 35.9 -0.14 31.7 0.51 35.4 20.8
1974 1.50 39.4 0.58 37.3 -0.62 35.8 0.49 37.5 13.6
1975 0.00 36.9 -0.25 28.7 0.93 40.9 0.23 35.5 17.5
1976 -1.60 30.3 -1.04 20.0 -0.49 33.6 -1.04 28.0 18.7
1977 -1.00 32.6 0.66 28.0 -2.20 24.7 -0.85 28.4 54.9
1978 -1.57 38.6 -1.38 32.5 -0.67 23.0 -1.21 31.4 40.2
1979 1.00 38.2 -0.75 31.8 0.05 29.7 0.10 33.2 20.9
1980 0.78 32.5 0.37 25.3 0.92 37.9 0.69 31.9 15.4
1981 -0.02 34.6 -0.89 24.7 1.15 34.4 0.08 31.2 25.4
1982 1.78 41.3 1.59 34.1 -0.53 34.0 0.95 36.5 35.9
1983 0.29 33.2 1.66 26.2 0.72 38.7 0.89 32.7 21.6
1984 0.00 41.9 -1.61 27.3 -0.49 35.3 -0.70 34.8 16.5
1985 0.22 33.3 1.11 32.8 -1.00 32.1 0.11 32.7 16.4
1986 0.99 37.9 -1.15 31.9 -0.73 32.5 -0.30 34.1 25.7
1987 0.32 39.2 1.02 27.3 0.76 34.6 0.70 33.7 15.0
1988 0.61 35.4 1.17 36.5 2.00 34.8 1.26 35.6 11.2
1989 -1.15 25.5 1.04 40.3 1.41 41.2 0.43 35.7 17.0
1990 0.22 42.1 0.86 35.2 1.04 40.0 0.71 39.1 14.6
1991 0.46 39.6 -0.13 35.7 1.07 37.5 0.47 37.6 4.7
1992 0.47 38.8 1.60 38.2 0.50 31.9 0.86 36.3 24.3
1993 1.56 38.4 1.04 27.4 0.46 33.2 1.02 33.0 23.1
1994 2.02 41.9 0.93 38.2 1.14 31.5 1.36 37.2 9.8
1995 -1.67 31.6 -0.12 30.2 -0.07 33.9 -0.62 31.9 65.5
1996 -1.41 40.2 -0.49 32.5 1.70 40.0 -0.07 37.6 12.9
1997 -0.96 38.5 0.39 41.0 -0.11 41.8 -0.23 40.4 0.8
1998 0.87 42.0 0.77 35.0 0.29 38.0 0.64 38.3 12.5
1999 1.61 39.9 0.60 32.1 1.70 37.5 1.30 36.5 21.0
2000 -0.58 31.3 0.25 32.5 0.45 37.4 0.04 33.7 26.1
2001 -0.83 43.7 0.44 39.2 1.10 41.1 0.24 41.3 4.0
2002 -0.94 35.4 0.16 28.5 0.62 29.9 -0.05 31.3 46.3
2003 0.64 36.8 -0.29 26.1 -0.14 35.4 0.07 32.8 18.0
2004 1.21 37.7 1.52 31.8 -0.06 36.1 0.89 35.2 30.4
2005 -0.44 34.4 1.26 40.7 -0.51 35.6 0.10 36.9 19.5
2006 1.34 42.7 0.22 38.2 -0.47 27.9 0.36 36.3 13.4
2007 0.34 37.6 0.89 35.9 0.73 36.9 0.65 36.8 6.0
2008 -0.28 38.7 -0.01 29.0 0.06 37.1 -0.08 34.9 22.8
2009 -1.93 36.4 -1.11 33.2 -1.98 31.8 -1.67 33.8 78.7
2010 -1.85 32.7 -0.88 29.3 0.70 37.2 -0.68 33.1 44.0