PHOENIX SKY HARBOR INTL AP, ARIZONA

Monthly Total Heating Degree Days

(026481)

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
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 0.00 0.00 129.50 375.50 505.00
1934 396.50 177.50 12.50 17.00 0.00 0.00 0.00 0.00 0.00 5.50 219.50 343.00 1171.50
1935 411.50 263.00 306.00 39.50 15.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1035.50
1936 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 z 0.00 z 0.00 z 0.00
1937 0.00 z 343.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 169.00 308.00 820.50
1938 382.00 297.50 227.00 60.50 8.50 0.00 0.00 0.00 0.00 25.00 355.50 353.50 1709.50
1939 442.50 504.00 167.50 14.50 0.00 0.00 0.00 z 0.00 0.00 0.00 z 0.00 z 0.00 z 1128.50
1940 0.00 z 0.00 z 102.50 0.00 z 0.00 0.00 0.00 0.00 0.00 28.50 225.50 293.00 649.50
1941 363.00 214.50 203.00 141.00 12.00 0.00 0.00 0.00 0.00 a 57.00 164.50 393.50 1548.50
1942 386.00 391.50 249.00 62.50 7.23 a 0.00 0.00 0.00 0.00 a 24.00 104.00 324.50 1548.73
1943 406.50 209.50 86.80 a 45.00 0.00 0.00 0.00 0.00 0.00 35.50 169.00 393.50 1345.80
1944 468.50 386.50 280.00 60.00 1.00 0.00 0.00 0.00 0.00 0.00 269.00 405.50 1870.50
1945 450.00 293.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 743.00
1946 0.00 z 362.00 150.50 19.50 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 532.00
1947 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 z 0.00 z 487.00 487.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 14.50 311.00 464.00 789.50
1949 661.00 370.00 185.50 41.00 0.00 0.00 0.00 0.00 0.00 58.00 51.50 428.50 1795.50
1950 475.00 173.50 111.00 11.50 5.00 0.00 0.00 0.00 0.50 0.00 74.50 234.00 1085.00
1951 408.50 256.50 152.00 39.50 17.00 0.00 0.00 0.00 0.00 12.50 191.50 401.50 1479.00
1952 421.50 314.00 302.00 45.00 0.00 0.00 0.00 0.00 0.00 0.00 257.00 434.50 1774.00
1953 325.50 328.50 138.00 52.00 8.00 0.00 0.00 0.00 0.00 20.50 153.50 488.00 1514.00
1954 396.00 119.50 214.50 8.00 4.00 0.00 0.00 0.00 0.00 16.50 45.00 343.50 1147.00
1955 506.00 397.00 122.00 40.00 4.00 0.00 0.00 0.00 0.00 1.00 187.00 286.50 1543.50
1956 279.50 410.00 136.00 58.00 0.00 0.00 0.00 0.00 0.00 48.50 222.00 364.50 1518.50
1957 342.50 125.00 112.50 49.50 7.50 0.00 0.00 0.00 0.00 13.50 261.00 311.50 1223.00
1958 373.00 198.50 252.00 71.00 0.00 0.00 0.00 0.00 0.00 4.50 130.00 279.00 1308.00
1959 349.50 311.50 69.00 0.00 3.00 0.00 0.00 0.00 0.00 27.50 127.00 353.00 1240.50
1960 513.00 393.50 57.50 15.00 0.00 0.00 0.00 0.00 0.00 17.00 158.50 451.50 1606.00
1961 335.50 264.50 173.00 8.50 0.00 0.00 0.00 0.00 0.00 52.00 239.00 395.50 1468.00
1962 421.00 261.50 283.50 2.50 0.00 0.00 0.00 0.00 0.00 2.00 119.50 309.00 1399.00
1963 515.00 152.50 155.50 54.00 0.00 0.00 0.00 0.00 0.00 0.00 136.00 409.50 1422.50
1964 567.00 457.50 281.50 72.50 24.50 0.00 0.00 0.00 0.00 0.00 287.50 405.00 2095.50
1965 383.00 354.50 278.00 137.50 16.50 0.00 0.00 0.00 4.50 8.50 122.50 377.00 1682.00
1966 520.50 427.50 150.00 12.50 0.00 0.00 0.00 0.00 0.00 9.50 144.50 404.50 1669.00
1967 445.00 262.50 106.50 99.00 10.50 0.00 0.00 0.00 0.00 6.50 75.00 520.50 1525.50
1968 391.50 158.00 174.00 42.00 0.00 0.00 0.00 0.00 0.00 0.00 181.50 481.50 1428.50
1969 313.50 336.50 272.00 13.00 14.50 0.00 0.00 0.00 0.00 15.50 99.50 315.00 1379.50
1970 400.50 138.00 174.50 64.00 0.00 0.00 0.00 0.00 0.00 20.50 126.00 384.50 1308.00
1971 403.50 246.50 128.50 55.50 0.50 0.00 0.00 0.00 0.00 82.00 188.50 459.50 1564.50
1972 423.00 179.50 24.00 12.50 0.00 0.00 0.00 0.00 0.00 41.00 210.50 400.50 1291.00
1973 429.50 210.00 260.00 42.50 0.50 0.00 0.00 0.00 0.00 2.50 161.00 298.00 1404.00
1974 341.00 235.00 80.50 6.00 0.00 0.00 0.00 0.00 0.00 21.50 118.00 447.50 1249.50
1975 396.00 308.00 198.00 111.50 4.50 0.00 0.00 0.00 0.00 15.50 165.50 317.00 1516.00
1976 302.50 127.00 140.50 53.50 0.00 0.00 0.00 0.00 0.00 3.50 116.00 293.00 1036.00
1977 348.00 126.50 154.00 33.50 0.00 0.00 0.00 0.00 0.00 0.00 44.50 160.00 866.50
1978 263.00 179.00 72.50 25.50 0.00 0.00 0.00 0.00 0.00 1.50 152.00 412.50 1106.00
1979 463.50 260.50 151.50 32.00 0.50 0.00 0.00 0.00 0.00 11.00 211.00 284.00 1414.00
1980 261.00 134.00 135.50 37.50 0.00 0.00 0.00 0.00 0.00 14.50 111.50 127.50 821.50
1981 186.00 135.00 77.50 9.00 0.00 0.00 0.00 0.00 0.00 1.50 58.50 202.50 670.00
1982 344.50 157.00 104.50 5.00 0.00 0.00 0.00 0.00 0.00 1.50 106.00 337.50 1056.00
1983 280.00 188.50 125.00 56.50 0.00 0.00 0.00 0.00 0.00 0.00 158.50 243.00 1051.50
1984 235.00 144.50 18.50 27.00 0.00 0.00 0.00 0.00 0.00 8.00 131.50 351.00 915.50
1985 333.00 228.50 107.00 5.50 0.00 0.00 0.00 0.00 0.00 0.00 153.50 282.50 1110.00
1986 115.00 162.50 69.50 2.00 1.00 0.00 0.00 0.00 0.00 0.00 47.00 267.50 664.50
1987 323.00 176.00 98.50 4.00 0.00 0.00 0.00 0.00 0.00 0.00 102.00 384.00 1087.50
1988 317.50 103.50 66.00 21.00 2.50 0.00 0.00 0.00 0.00 0.00 138.50 290.50 939.50
1989 330.00 136.50 48.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 38.00 250.50 805.00
1990 297.50 260.00 79.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 70.00 353.50 1060.50
1991 283.00 29.00 166.50 5.00 0.00 0.00 0.00 0.00 0.00 35.00 113.00 240.00 871.50
1992 269.50 94.50 60.00 7.00 0.00 0.00 0.00 0.00 0.00 0.00 132.50 348.50 912.00
1993 211.50 191.50 63.50 0.00 0.00 0.00 0.00 0.00 0.00 0.50 129.50 272.50 869.00
1994 255.50 198.00 58.00 16.00 0.00 0.00 0.00 0.00 0.00 15.50 218.50 300.00 1061.50
1995 326.50 68.50 75.50 51.00 6.50 0.00 0.00 0.00 0.00 0.00 23.50 249.50 801.00
1996 284.00 115.00 64.00 0.00 0.00 0.00 0.00 0.00 0.00 49.00 71.00 268.00 851.00
1997 290.00 210.50 39.50 37.00 0.00 0.00 0.00 0.00 0.00 9.50 86.50 375.50 1048.50
1998 260.50 306.00 143.50 81.00 2.00 0.00 0.00 0.00 0.00 4.50 79.00 331.00 1207.50
1999 255.00 137.00 66.50 108.50 2.50 0.00 0.00 0.00 0.00 0.00 54.50 303.50 927.50
2000 221.00 127.00 114.00 8.50 0.00 0.00 0.00 0.00 0.00 21.00 244.00 239.50 975.00
2001 339.00 228.00 89.50 47.00 0.00 0.00 0.00 0.00 0.00 0.00 70.50 348.50 1122.50
2002 281.00 121.00 78.50 0.00 0.00 0.00 0.00 0.00 0.00 2.00 21.50 304.00 808.00
2003 101.50 162.50 84.00 16.50 0.00 0.00 0.00 0.00 0.00 0.00 112.00 258.00 734.50
2004 237.00 266.50 47.50 10.50 0.00 0.00 0.00 0.00 0.00 17.50 141.50 279.50 1000.00
2005 227.00 161.50 68.00 0.50 0.00 0.00 0.00 0.00 0.00 0.00 53.50 253.50 764.00
2006 233.50 108.50 126.00 4.00 0.00 0.00 0.00 0.00 0.00 0.00 50.50 331.50 854.00
2007 374.50 153.50 56.00 8.00 0.00 0.00 0.00 0.00 0.00 0.00 31.50 366.00 989.50
2008 320.00 207.50 53.50 0.00 4.00 0.00 0.00 0.00 0.00 5.00 35.50 285.00 910.50
2009 203.50 151.00 27.50 23.50 0.00 0.00 0.00 0.00 0.00 24.00 48.50 351.50 829.50
2010 235.00 165.00 108.00 18.50 0.00 0.00 0.00 0.00 0.00 0.00 138.00 171.50 836.00
2011 289.50 273.50 26.00 27.00 0.00 0.00 0.00 0.00 0.00 0.00 76.00 366.00 1058.00
2012 198.50 142.50 75.00 9.00 0.00 0.00 0.00 0.00 0.00 0.00 a 26.00 259.00 710.00
2013 350.82 a 218.50 33.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 16.50 z 602.82
Period of Record Statistics
MEAN 344.46 226.15 127.31 33.07 2.48 0.00 0.00 0.00 0.07 12.51 134.39 335.77 1193.94
S.D. 101.45 100.41 76.54 32.46 4.99 0.00 0.00 0.00 0.53 17.31 74.12 79.64 331.29
SKEW 0.29 0.64 0.75 1.36 2.41 0.00 0.00 0.00 8.28 1.81 0.63 -0.03 0.43
MAX 661.00 504.00 306.00 141.00 24.50 0.00 0.00 0.00 4.50 82.00 355.50 520.50 2095.50
MIN 101.50 29.00 12.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21.50 127.50 664.50
NO YRS 74 76 75 73 74 74 74 74 74 73 74 75 70