PETRIFIED FOREST NP, ARIZONA

Monthly Total Cooling Degree Days

(026468)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201303
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1931 0.00 0.00 0.00 b 0.00 10.69 b 159.50 328.50 236.00 118.00 7.50 0.00 0.00 860.19
1932 0.00 0.00 0.00 0.50 12.00 181.00 352.00 323.00 106.50 1.00 0.00 a 0.00 976.00
1933 0.00 0.00 0.00 0.00 13.00 296.00 407.00 334.00 188.50 9.50 0.00 0.00 1248.00
1934 0.00 0.00 0.00 8.00 77.50 143.50 397.50 308.00 108.50 12.00 0.00 0.00 1055.00
1935 0.00 0.00 0.00 0.00 0.00 173.50 297.50 275.50 78.50 5.50 0.00 0.00 830.50
1936 0.00 0.00 0.00 0.00 16.00 254.00 349.50 332.00 91.00 0.00 0.00 0.00 1042.50
1937 0.00 0.00 0.00 0.00 21.50 116.00 316.50 396.50 208.00 10.00 0.00 0.00 1068.50
1938 0.00 0.00 0.00 1.00 22.00 185.50 332.00 147.50 s 80.50 k 21.00 0.00 0.00 a 561.50
1939 0.00 b 0.00 a 0.00 0.50 36.00 219.00 421.50 348.75 a 155.00 0.50 0.00 0.00 1181.25
1940 0.00 0.00 0.00 0.00 17.57 a 233.00 337.50 291.00 78.62 a 0.00 0.00 a 0.00 957.69
1941 0.00 0.00 0.00 0.00 a 31.00 103.00 287.50 245.50 83.00 0.00 0.00 0.00 750.00
1942 0.00 0.00 0.00 0.00 9.00 138.00 369.00 247.50 64.50 1.50 0.00 0.00 829.50
1943 0.00 0.00 0.00 8.00 49.60 a 176.00 364.00 310.00 131.00 11.50 0.00 0.00 1050.10
1944 0.00 0.00 0.00 0.00 19.00 122.00 316.50 330.00 118.45 a 12.00 0.00 0.00 917.95
1945 0.00 0.00 0.00 0.00 5.00 93.00 355.50 351.50 165.50 7.00 0.00 0.00 977.50
1946 0.00 0.00 0.00 5.00 12.50 245.50 347.50 291.00 140.00 2.50 0.00 0.00 1044.00
1947 0.00 0.00 0.00 0.00 55.00 136.00 378.00 262.50 169.50 14.50 0.00 0.00 1015.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 344.00 312.50 176.50 1.00 0.00 0.00 834.00
1949 0.00 0.00 0.00 8.00 22.50 190.00 325.00 261.00 163.45 a 2.21 c 0.00 a 0.00 972.16
1950 0.00 0.00 a 0.00 0.00 14.00 179.00 297.94 d 271.00 71.00 32.00 0.00 0.00 864.94
1951 0.00 0.00 0.00 0.00 86.11 d 142.76 a 416.50 297.50 149.48 a 1.00 0.00 0.00 1093.35
1952 0.00 0.00 0.00 0.00 27.50 195.50 334.00 344.50 155.00 4.13 a 0.00 0.00 1060.63
1953 0.00 0.00 0.00 a 0.50 17.00 231.00 387.00 284.00 166.50 f 2.21 c 0.00 0.00 921.71
1954 0.00 f 0.00 0.00 0.00 33.50 193.97 a 380.00 255.00 142.00 24.00 0.00 0.00 1028.47
1955 0.00 0.00 0.00 0.00 15.50 a 146.00 310.50 302.50 167.50 12.29 b 0.00 0.00 954.29
1956 0.00 0.00 0.00 0.00 42.00 273.10 a 314.50 229.00 180.50 18.50 0.00 0.00 1057.60
1957 0.00 0.00 0.00 0.00 5.68 a 211.50 331.00 216.50 f 109.14 a 7.00 0.00 0.00 a 664.32
1958 0.00 0.00 0.00 a 0.00 96.00 268.50 355.50 356.00 121.00 0.00 0.00 a 0.00 a 1197.00
1959 0.00 a 0.00 0.00 l 0.50 21.70 a 274.50 411.50 248.50 133.50 0.00 0.00 b 0.00 1090.20
1960 0.00 0.00 0.00 0.00 a 20.50 248.00 400.93 a 324.00 122.50 1.50 0.00 a 0.00 b 1117.43
1961 0.00 0.00 0.00 a 0.00 a 15.50 b 272.50 377.68 a 256.78 a 33.62 a 0.00 0.00 0.00 956.09
1962 0.00 0.00 0.00 0.00 a 13.95 a 118.50 319.09 b 309.00 116.50 3.00 0.00 a 0.00 880.04
1963 0.00 0.00 0.00 0.00 34.00 126.00 413.00 246.50 164.00 15.00 0.00 a 0.00 998.50
1964 0.00 0.00 0.00 0.00 a 36.68 a 126.50 381.00 224.00 80.00 3.50 0.00 0.00 851.68
1965 0.00 0.00 a 0.00 0.00 12.50 79.00 305.50 283.00 72.50 2.50 0.00 0.00 a 755.00
1966 0.00 a 0.00 0.00 0.00 a 34.50 167.00 386.50 317.50 107.00 1.00 0.00 0.00 1013.50
1967 0.00 0.00 0.00 a 0.00 21.59 c 133.97 a 371.00 278.00 101.00 7.50 0.00 0.00 913.05
1968 0.00 0.00 0.00 0.00 19.50 201.50 296.00 156.00 79.50 0.00 0.00 0.00 752.50
1969 0.00 0.00 0.00 0.00 51.00 104.00 374.00 372.00 121.00 2.50 0.00 0.00 1024.50
1970 0.00 0.00 0.00 0.00 16.50 153.00 380.50 323.50 81.50 0.00 0.00 0.00 955.00
1971 0.00 0.00 0.00 5.00 2.14 b 179.00 397.32 a 278.50 106.55 a 0.00 0.00 0.00 968.51
1972 0.00 0.00 0.00 b 0.00 4.00 124.00 366.00 271.00 98.00 6.50 0.00 0.00 869.50
1973 0.00 0.00 0.00 0.00 18.00 159.50 329.00 281.50 81.00 0.00 0.00 0.00 869.00
1974 0.00 0.00 0.00 1.50 40.62 b 302.50 301.50 252.00 99.00 0.50 0.00 0.00 997.62
1975 0.00 0.00 0.00 0.00 6.09 c 105.00 316.50 280.00 77.50 1.00 0.00 0.00 786.09
1976 0.00 0.00 0.00 0.00 14.00 173.50 326.50 250.87 d 73.00 0.00 0.00 0.00 837.87
1977 0.00 0.00 0.00 0.00 5.50 189.50 324.98 a 316.00 87.50 i 12.92 a 0.00 g 0.00 a 848.90
1978 0.00 0.00 0.00 0.00 18.08 a 172.50 331.00 239.00 106.50 12.50 0.00 0.00 879.58
1979 0.00 0.00 0.00 0.00 8.78 a 163.00 350.50 228.50 181.50 15.00 0.00 0.00 947.28
1980 0.00 0.00 0.00 2.50 2.50 202.00 370.00 277.00 92.00 2.00 0.00 0.00 948.00
1981 0.00 0.00 0.00 3.00 17.50 277.50 346.50 285.00 84.50 6.95 b 0.00 0.00 1020.95
1982 0.00 a 0.00 0.00 0.00 5.50 128.00 297.50 296.00 146.50 0.00 0.00 0.00 873.50
1983 0.00 0.00 0.00 0.00 49.00 109.00 321.00 290.00 183.00 0.50 0.00 0.00 952.50
1984 0.00 0.00 0.00 0.00 89.50 170.50 317.00 259.00 128.00 0.00 0.00 0.00 964.00
1985 0.00 0.00 0.00 0.00 28.00 253.50 388.50 307.50 59.50 0.00 0.00 0.00 1037.00
1986 0.00 0.00 0.00 0.00 24.00 207.50 275.00 335.00 77.50 0.00 0.00 0.00 919.00
1987 0.00 0.00 0.00 0.00 1.00 194.50 280.50 219.50 71.50 1.50 0.00 0.00 768.50
1988 0.00 0.00 0.00 0.00 42.50 215.50 379.50 263.50 69.00 3.50 0.00 0.00 973.50
1989 0.00 0.00 0.00 10.50 67.50 200.50 388.00 237.50 108.50 2.50 0.00 0.00 1015.00
1990 0.00 0.00 0.00 1.50 18.50 297.50 358.50 248.00 146.50 0.00 0.00 0.00 1070.50
1991 0.00 0.00 0.00 0.00 7.50 105.00 331.50 311.00 86.50 5.50 0.00 0.00 847.00
1992 0.00 0.00 0.00 11.00 11.00 127.00 283.50 257.50 94.00 1.00 0.00 0.00 785.00
1993 0.00 0.00 0.00 0.00 31.00 170.00 321.50 295.00 89.00 6.50 0.00 0.00 913.00
1994 0.00 0.00 0.00 2.50 24.00 283.00 359.00 377.00 113.00 4.00 0.00 0.00 1162.50
1995 0.00 0.00 0.00 0.00 2.00 121.00 341.00 396.00 127.50 0.00 0.00 0.00 p 987.50
1996 0.00 0.00 0.00 6.00 72.00 238.00 404.00 335.50 60.50 5.00 0.00 0.00 1121.00
1997 0.00 0.00 0.00 0.00 52.50 168.50 296.00 287.00 155.00 13.50 0.00 0.00 972.50
1998 0.00 0.00 0.00 0.00 13.00 142.50 374.50 324.00 175.00 1.00 0.00 0.00 1030.00
1999 0.00 0.00 0.00 0.00 o 21.18 a 185.36 b 290.37 a 255.48 b 90.00 0.00 z 0.00 0.00 842.39
2000 0.00 0.00 0.00 7.50 116.50 313.50 441.00 361.50 228.50 27.00 0.00 0.00 1495.50
2001 0.00 0.00 0.00 6.00 130.00 252.41 a 382.00 300.50 195.00 19.00 0.00 0.00 a 1284.91
2002 0.00 a 0.00 0.00 6.50 45.00 289.00 436.00 348.50 72.00 0.00 0.00 0.00 1197.00
2003 0.00 0.00 0.00 0.00 54.00 111.00 345.50 258.50 104.50 17.00 0.00 0.00 a 890.50
2004 0.00 0.00 0.00 0.50 28.50 194.50 341.00 253.50 118.50 1.00 0.00 0.00 937.50
2005 0.00 0.00 0.00 0.00 68.50 193.00 454.00 274.00 149.50 14.50 0.00 0.00 1153.50
2006 0.00 0.00 0.00 a 0.50 75.00 318.50 429.00 279.00 52.50 16.50 0.00 b 0.00 1171.00
2007 0.00 0.00 0.00 1.50 55.00 272.00 419.50 361.00 168.50 9.00 0.00 0.00 a 1286.50
2008 0.00 0.00 0.00 0.00 27.50 241.00 373.00 365.00 123.50 3.50 0.00 0.00 1133.50
2009 0.00 0.00 0.00 0.00 60.00 132.00 433.50 0.00 z 126.50 2.00 0.00 0.00 754.00
2010 0.00 0.00 0.00 0.00 9.50 237.00 399.00 321.00 161.50 16.00 0.00 0.00 1144.00
2011 0.00 a 0.00 e 0.00 0.00 16.00 191.00 350.00 376.00 117.50 0.00 0.00 0.00 b 1050.50
2012 0.00 0.00 a 0.00 2.00 44.00 278.00 357.00 334.50 108.50 9.00 0.00 0.00 1133.00
2013 0.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 1.25 30.76 190.10 354.85 293.94 118.47 6.09 0.00 0.00 994.83
S.D. 0.00 0.00 0.00 2.65 26.94 61.11 42.51 46.02 40.92 7.20 0.00 0.00 141.67
SKEW 0.00 0.00 0.00 2.23 1.52 0.31 0.21 0.06 0.41 1.38 0.00 0.00 0.67
MAX 0.00 0.00 0.00 11.00 130.00 318.50 454.00 396.50 228.50 32.00 0.00 0.00 1495.50
MIN 0.00 0.00 0.00 0.00 0.00 79.00 275.00 156.00 33.62 0.00 0.00 0.00 750.00
NO YRS 81 82 81 80 81 81 82 79 79 81 81 81 72