TUCSON INTL AP, ARIZONA

Monthly Total Heating Degree Days

(028820)

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
1930 0.00 z 199.77 b 229.50 27.00 64.00 0.00 0.00 0.00 0.00 20.00 207.12 d 463.00 1210.38
1931 452.50 306.50 197.50 8.50 0.00 0.00 0.00 0.00 0.00 20.00 329.00 502.50 1816.50
1932 664.50 287.00 219.00 81.00 14.00 0.50 0.00 0.00 0.00 43.50 94.00 0.00 z 1403.50
1933 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
1934 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
1935 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
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 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
1938 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 0.00 z 0.00 z 0.00 z 0.00
1939 0.00 z 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 0.00 z 0.00
1940 0.00 z 0.00 z 141.00 56.50 1.00 0.00 0.00 a 0.00 a 0.00 35.50 252.50 269.91 b 756.41
1941 383.50 240.50 245.00 175.50 34.50 0.00 0.00 0.00 0.00 a 0.00 z 0.00 z 0.00 z 1079.00
1942 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
1943 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
1944 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
1945 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
1946 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
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 0.00 z 0.00
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 22.50 344.00 428.50 795.00
1949 683.50 413.00 231.00 63.50 0.00 0.00 0.00 0.00 0.00 79.00 57.50 432.00 1959.50
1950 452.50 220.50 160.50 23.50 22.00 0.00 0.00 0.00 0.00 0.00 76.00 250.50 1205.50
1951 456.00 323.50 237.00 83.50 26.50 0.00 0.00 0.00 0.00 19.50 197.00 419.50 1762.50
1952 412.00 390.50 389.50 73.00 0.50 0.00 0.00 0.00 0.00 0.00 280.50 464.00 2010.00
1953 346.50 361.00 166.00 67.00 42.00 0.00 0.00 0.00 0.00 31.50 155.50 509.50 1679.00
1954 357.50 134.50 187.00 5.00 6.50 0.00 0.00 0.00 0.00 14.50 98.00 367.50 1170.50
1955 566.50 454.00 181.50 78.00 14.00 0.00 0.00 0.00 0.00 1.00 205.00 295.00 1795.00
1956 276.00 474.50 173.50 87.50 0.00 0.00 0.00 0.00 0.00 48.00 230.00 387.50 1677.00
1957 347.00 132.50 173.00 51.50 20.00 0.00 0.00 0.00 0.00 44.00 322.50 314.50 1405.00
1958 423.50 260.00 336.00 105.00 0.00 0.00 0.00 0.00 0.00 28.00 221.00 292.00 1665.50
1959 349.00 377.50 213.00 9.50 10.50 0.00 0.00 0.00 0.00 45.50 196.00 421.50 1622.50
1960 564.00 500.50 140.50 73.00 6.50 0.00 0.00 0.00 0.00 38.50 190.00 493.00 2006.00
1961 389.00 337.00 214.00 44.00 10.00 0.00 0.00 0.00 0.00 61.50 319.50 451.50 1826.50
1962 498.00 292.50 365.50 8.50 8.50 0.00 0.00 0.00 0.00 13.50 142.50 343.00 1672.00
1963 520.00 219.00 240.00 85.00 0.00 0.00 0.00 0.00 0.00 3.00 191.00 380.00 1638.00
1964 543.00 503.00 327.50 112.00 28.00 0.00 0.00 0.00 0.00 6.50 298.00 390.50 2208.50
1965 355.50 391.00 312.00 117.00 24.00 0.00 0.00 0.00 8.50 34.00 113.00 401.50 1756.50
1966 538.00 482.50 172.00 27.50 0.00 0.00 0.00 0.00 0.00 22.00 130.00 394.00 1766.00
1967 423.00 264.00 119.00 117.00 20.00 0.00 0.00 0.00 0.00 15.00 93.50 510.00 1561.50
1968 391.00 176.00 205.50 96.50 0.50 0.00 0.00 0.00 0.00 4.50 210.50 448.00 1532.50
1969 296.50 333.00 347.00 37.00 37.00 0.00 0.00 0.00 0.00 59.50 194.00 390.50 1694.50
1970 464.00 228.50 282.00 140.00 8.50 0.00 0.00 0.00 0.00 61.00 150.50 409.50 1744.00
1971 453.50 356.50 205.50 116.00 13.50 0.00 0.00 0.00 0.00 122.00 256.00 555.50 2078.50
1972 453.50 267.50 75.00 52.50 0.00 0.00 0.00 0.00 0.00 100.00 363.00 497.50 1809.00
1973 539.50 325.50 417.00 180.00 19.50 0.00 0.00 0.00 0.00 24.50 222.00 396.00 2124.00
1974 458.50 369.00 167.50 51.00 6.00 0.00 0.00 0.00 0.00 54.50 226.50 559.50 1892.50
1975 471.50 401.50 303.50 224.50 30.00 0.00 0.00 0.00 0.00 39.50 196.00 374.50 2041.00
1976 385.50 190.50 225.00 90.00 6.00 0.00 0.00 0.00 0.00 47.50 182.50 398.50 1525.50
1977 443.50 229.00 293.00 68.50 9.50 0.00 0.00 0.00 0.00 1.50 122.50 250.50 1418.00
1978 370.50 320.50 149.00 66.50 25.00 0.00 0.00 0.00 0.00 17.00 220.50 475.50 1644.50
1979 516.00 315.50 267.00 79.50 21.00 0.00 0.00 0.00 0.00 28.00 258.50 308.50 1794.00
1980 332.00 209.00 236.00 87.50 4.50 0.00 0.00 0.00 0.00 69.00 201.00 216.50 1355.50
1981 318.00 227.50 251.00 33.00 0.00 0.00 0.00 0.00 0.00 36.00 110.00 312.50 1288.00
1982 443.50 294.00 231.50 48.50 11.00 0.00 0.00 0.00 0.00 44.50 219.00 463.50 1755.50
1983 378.00 314.50 246.00 173.00 7.00 0.00 0.00 0.00 0.00 0.00 240.00 357.50 1716.00
1984 412.00 330.50 145.00 115.00 0.00 0.00 0.00 0.00 0.00 51.50 228.50 420.50 1703.00
1985 456.50 334.50 204.00 43.00 0.00 0.00 0.00 0.00 0.00 10.50 223.50 378.00 1650.00
1986 199.50 248.50 121.00 23.50 6.50 0.00 0.00 0.00 0.00 12.00 160.00 395.00 1166.00
1987 436.50 304.00 232.00 24.50 0.00 0.00 0.00 0.00 0.00 0.00 193.50 457.50 1648.00
1988 373.00 176.00 166.00 48.00 14.00 0.00 0.00 0.00 0.00 0.00 223.50 407.50 1408.00
1989 469.00 205.00 84.00 9.50 4.50 0.00 0.00 0.00 0.00 26.50 113.00 371.50 1283.00
1990 410.00 348.00 161.00 18.00 3.50 0.00 0.00 0.00 0.00 5.50 155.50 432.00 1533.50
1991 393.50 147.50 303.50 49.50 3.50 0.00 0.00 0.00 0.00 58.00 203.50 332.50 1491.50
1992 416.00 223.00 177.50 26.00 0.00 0.00 0.00 0.00 0.00 0.00 268.50 423.50 1534.50
1993 304.50 308.00 134.00 30.50 0.00 0.00 0.00 0.00 0.00 6.50 194.50 361.50 1339.50
1994 352.00 279.50 99.00 44.00 0.50 0.00 0.00 0.00 0.00 25.50 261.50 344.00 1406.00
1995 386.00 129.00 148.00 88.50 17.50 0.00 0.00 0.00 0.00 4.00 68.00 342.00 1183.00
1996 353.00 180.00 143.00 26.00 0.00 0.00 0.00 0.00 0.00 93.50 152.00 353.00 1300.50
1997 390.50 322.00 69.50 80.00 0.00 0.00 0.00 0.00 0.00 55.50 151.00 508.00 1576.50
1998 366.50 397.50 237.50 160.00 3.50 0.00 0.00 0.00 0.00 21.00 144.00 406.00 1736.00
1999 354.00 227.50 130.00 159.50 7.50 0.00 0.00 0.00 0.00 0.50 86.50 426.50 1392.00
2000 313.50 224.00 192.50 27.50 0.00 0.00 0.00 0.00 0.00 62.50 365.00 332.50 1517.50
2001 475.50 343.00 183.50 99.00 1.00 0.00 0.00 0.00 0.00 0.00 139.00 486.00 1727.00
2002 416.00 226.50 204.00 4.50 0.00 0.00 0.00 0.00 0.00 24.00 121.00 444.50 1440.50
2003 212.00 287.50 182.00 69.50 0.50 0.00 0.00 0.00 0.00 0.00 191.00 381.00 1323.50
2004 374.50 414.00 89.00 56.50 0.00 0.00 0.00 0.00 0.00 37.50 280.50 381.50 1633.50
2005 329.00 257.50 190.00 31.00 0.00 0.00 0.00 0.00 0.00 0.00 127.50 323.50 1258.50
2006 325.00 191.00 207.50 19.50 0.00 0.00 0.00 0.00 0.00 20.50 100.00 431.50 1295.00
2007 509.00 269.00 135.50 38.50 0.00 0.00 0.00 0.00 0.00 3.00 69.50 489.00 1513.50
2008 413.00 286.00 159.00 25.50 5.00 0.00 0.00 0.00 0.00 24.00 106.00 350.00 1368.50
2009 301.50 232.50 114.00 65.00 0.00 0.00 0.00 0.00 0.00 49.00 93.00 442.00 1297.00
2010 343.00 313.50 215.50 73.00 13.36 b 0.00 0.00 0.00 0.00 9.00 237.00 257.50 1461.86
2011 416.00 367.50 71.50 37.50 8.00 0.00 0.00 0.00 0.00 14.00 180.50 499.00 1594.00
2012 294.50 273.00 170.00 51.00 0.00 0.00 0.00 0.00 0.00 3.00 69.00 355.50 1216.00
2013 466.50 393.50 58.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.00 z 918.00
Period of Record Statistics
MEAN 411.43 295.10 199.99 67.64 9.28 0.01 0.00 0.00 0.12 28.59 188.72 398.93 1594.06
S.D. 90.18 89.61 77.00 47.41 12.40 0.06 0.00 0.00 1.01 26.73 76.07 74.94 250.96
SKEW 0.50 0.32 0.58 1.09 1.93 8.19 0.00 0.00 8.25 1.15 0.33 -0.16 0.27
MAX 683.50 503.00 417.00 224.50 64.00 0.50 0.00 0.00 8.50 122.00 365.00 559.50 2208.50
MIN 199.50 129.00 58.00 4.50 0.00 0.00 0.00 0.00 0.00 0.00 57.50 216.50 1166.00
NO YRS 68 69 70 69 69 70 70 70 71 69 69 68 65