AJO, ARIZONA

Monthly Total Heating Degree Days

(020080)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1914 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
1915 456.50 343.00 213.00 57.86 b 71.09 b 0.00 0.00 0.00 e 0.00 0.00 a 176.00 228.00 j 1317.44
1916 469.00 184.00 109.50 f 47.00 f 2.50 0.00 a 0.00 b 0.00 0.00 e 18.00 208.93 b 469.17 e 1351.60
1917 517.00 311.00 263.00 73.50 10.00 0.00 0.00 0.00 b 0.00 0.00 46.50 182.00 1403.00
1918 382.50 329.50 118.00 31.00 6.50 0.00 0.00 0.00 0.00 11.50 214.50 419.00 1512.50
1919 394.98 b 368.00 243.50 33.00 2.50 0.00 0.00 0.00 0.00 37.00 183.00 298.00 1559.98
1920 344.00 205.00 194.50 58.00 0.00 d 0.00 0.00 0.00 0.00 118.00 232.50 532.00 1684.00
1921 399.00 g 329.50 134.00 79.50 50.50 0.00 0.00 0.00 0.00 24.00 80.00 265.00 962.50
1922 503.50 294.50 249.50 115.50 3.10 a 0.00 0.00 0.00 0.00 33.50 254.50 288.50 1742.60
1923 255.00 333.50 185.50 53.00 0.00 0.00 0.00 0.00 0.00 13.00 148.80 e 403.00 1391.80
1924 421.08 a 153.50 264.00 74.00 0.00 0.00 0.00 0.00 0.00 17.00 109.00 460.72 b 1499.31
1925 404.00 104.00 87.00 55.50 0.00 0.00 0.00 0.00 0.00 12.92 a 165.00 310.00 1138.42
1926 419.00 156.00 64.07 a 30.00 0.00 0.00 0.00 0.00 0.00 0.50 35.50 415.00 1120.07
1927 255.50 171.00 179.00 83.00 10.50 0.00 0.00 d 0.00 0.00 5.50 41.00 416.00 1161.50
1928 308.00 255.00 49.00 32.50 0.00 0.00 0.00 0.00 0.00 11.50 119.00 343.50 1118.50
1929 421.00 316.50 157.00 55.00 0.00 0.00 0.00 0.00 0.00 35.50 139.50 136.00 1260.50
1930 401.00 115.50 139.50 13.00 56.00 0.00 0.00 0.00 0.00 11.00 163.00 347.00 1246.00
1931 332.00 220.00 97.50 5.00 0.00 0.00 0.00 0.00 0.00 7.00 270.00 423.00 1354.50
1932 540.00 274.50 47.50 g 38.50 2.00 0.50 0.00 0.00 0.00 6.95 b 0.00 252.00 f 862.45
1933 401.28 d 241.00 g 69.50 76.00 33.00 0.00 c 0.00 0.00 0.00 0.00 51.50 292.00 923.28
1934 316.50 110.00 20.50 0.00 0.00 0.00 0.00 0.00 0.00 2.00 146.50 266.50 862.00
1935 337.50 207.00 175.50 14.50 8.50 0.00 0.00 e 0.00 l 0.00 18.50 164.50 308.93 b 1234.93
1936 337.00 248.50 81.00 36.00 0.00 0.00 0.00 0.00 0.00 6.00 138.00 365.00 1211.50
1937 685.50 301.00 177.50 36.50 2.00 0.00 0.00 0.00 0.00 0.00 36.50 i 243.35 a 1445.85
1938 308.00 261.00 225.00 57.50 6.50 0.00 0.00 0.00 0.00 8.00 224.50 255.46 d 1345.96
1939 392.87 e 471.50 157.50 13.00 0.00 0.00 d 0.00 0.00 0.00 11.50 75.00 198.50 1319.87
1940 262.00 257.50 55.11 d 27.00 0.00 0.00 0.00 0.00 0.00 27.90 a 196.50 246.00 1072.01
1941 380.50 195.00 160.68 a 103.20 e 5.50 0.00 0.00 0.00 0.00 34.50 116.00 338.50 1333.88
1942 363.00 313.50 198.50 53.00 0.50 0.00 0.00 0.00 0.00 g 21.50 76.50 304.00 1330.50
1943 376.00 215.50 99.50 56.00 0.00 0.00 0.00 0.00 0.00 23.50 83.50 340.50 1194.50
1944 414.50 363.00 208.00 54.50 3.00 0.00 0.00 0.00 0.00 0.00 265.00 314.50 1622.50
1945 418.50 240.00 278.50 94.00 0.00 0.00 0.00 0.00 0.00 1.00 138.50 384.00 1554.50
1946 407.50 286.50 115.50 15.00 0.00 0.00 0.00 i 0.00 0.00 26.00 267.50 266.00 1384.00
1947 436.50 134.00 110.00 36.50 0.00 0.00 0.00 0.00 a 0.00 1.00 211.50 g 458.05 b 1176.05
1948 340.50 348.50 279.52 a 26.00 0.50 0.00 0.00 0.00 0.00 12.00 228.50 393.00 1628.52
1949 670.00 380.50 171.50 42.50 0.00 0.00 0.00 0.00 0.00 62.00 25.50 366.00 1718.00
1950 413.00 149.50 101.50 13.50 9.00 0.00 0.00 0.00 d 0.50 0.00 47.00 123.00 857.00
1951 354.00 283.50 154.50 49.50 25.50 0.00 0.00 0.00 a 0.00 11.00 153.50 381.00 1412.50
1952 440.00 295.00 355.00 58.27 d 0.00 0.00 0.00 0.00 0.00 0.00 226.00 399.50 1773.77
1953 244.50 273.50 148.50 57.50 19.00 0.00 0.00 0.00 0.00 9.50 107.00 398.00 1257.50
1954 353.00 90.00 207.50 3.50 6.00 0.00 0.00 0.00 0.00 16.50 37.50 309.50 1023.50
1955 537.00 375.50 122.00 48.00 12.50 0.00 0.00 0.00 0.00 0.00 150.00 201.00 1446.00
1956 205.50 410.00 114.00 60.50 0.00 0.00 0.00 0.00 0.00 35.00 173.00 293.50 1291.50
1957 315.50 132.50 120.50 62.50 19.00 0.00 0.00 0.00 0.00 21.00 258.00 255.50 1184.50
1958 315.50 167.50 261.00 74.50 0.00 0.00 0.00 0.00 0.00 7.50 151.50 163.50 1141.00
1959 281.50 304.50 67.50 0.00 9.00 0.00 0.00 0.00 0.00 31.00 112.00 341.50 1147.00
1960 515.50 357.50 67.00 29.00 0.50 0.00 0.00 0.00 0.00 9.00 114.50 385.50 1478.50
1961 290.00 191.50 118.00 10.00 0.00 0.00 0.00 0.00 0.00 38.00 223.00 364.50 1235.00
1962 417.50 212.50 272.50 0.00 5.00 0.00 0.00 0.00 0.00 4.00 68.50 263.00 1243.00
1963 462.00 112.00 161.50 79.50 0.00 0.00 0.00 0.00 0.00 1.00 158.00 329.00 1303.00
1964 472.00 390.00 260.50 80.00 23.00 0.00 0.00 0.00 0.00 0.00 261.00 300.00 1786.50
1965 393.00 312.50 222.00 108.50 9.00 0.00 0.00 0.00 0.00 9.00 76.00 352.00 1482.00
1966 492.00 397.00 117.00 11.50 0.50 0.00 0.00 0.00 0.00 5.50 107.50 313.00 1444.00
1967 366.00 197.50 90.50 102.50 10.50 0.00 0.00 0.00 0.00 5.50 61.00 521.50 1355.00
1968 360.50 144.00 137.00 48.50 1.50 0.00 0.00 0.00 0.00 1.00 130.00 453.00 1275.50
1969 246.00 315.50 241.00 6.00 27.50 0.00 0.00 0.00 0.00 25.00 150.50 307.50 1319.00
1970 379.00 163.50 190.50 105.00 2.00 0.00 0.00 0.00 0.00 25.00 77.50 371.50 1314.00
1971 394.00 238.00 140.00 58.50 8.50 0.00 0.00 0.00 0.00 106.00 181.50 456.00 1582.50
1972 395.00 172.00 36.50 31.00 0.00 0.00 0.00 0.00 0.00 60.00 272.00 438.00 1404.50
1973 452.00 263.50 310.50 65.00 8.50 0.00 0.00 0.00 0.00 2.50 145.00 212.50 1459.50
1974 375.00 226.00 122.00 14.50 5.50 0.00 0.00 0.00 0.00 25.00 95.00 409.00 1272.00
1975 347.00 271.00 219.50 162.50 13.50 0.00 0.00 0.00 0.00 17.00 125.50 331.00 1487.00
1976 292.50 156.50 166.00 82.50 7.00 0.00 0.00 0.00 0.00 20.50 125.50 0.00 z 850.50
1977 330.00 120.50 204.00 46.50 12.00 0.00 0.00 0.00 0.00 0.00 39.00 117.50 869.50
1978 300.50 220.00 113.50 53.50 3.00 0.00 0.00 0.00 0.00 8.00 184.00 424.50 1307.00
1979 507.50 232.00 172.00 25.50 7.00 0.00 0.00 0.00 0.00 10.50 115.00 183.00 1252.50
1980 244.00 135.00 157.00 54.00 12.50 0.00 0.00 0.00 0.00 19.50 99.00 95.00 816.00
1981 158.50 135.50 147.50 23.50 0.00 0.00 0.00 0.00 0.00 11.00 56.00 171.50 703.50
1982 352.00 189.50 150.50 22.00 3.50 0.00 0.00 0.00 0.00 4.00 138.50 371.50 1231.50
1983 271.50 212.50 151.50 98.50 8.50 0.00 0.00 0.00 0.00 0.00 143.50 229.50 1115.50
1984 282.50 153.00 35.00 70.50 0.00 0.00 0.00 0.00 0.00 7.50 139.00 370.50 1058.00
1985 380.00 293.00 120.50 13.00 0.00 0.00 0.00 0.00 0.00 9.00 146.50 j 198.00 k 815.50
1986 86.50 i 151.00 69.00 j 5.50 4.50 j 0.00 i 0.00 i 0.00 k 0.00 i 1.50 30.50 l 182.50 k 158.00
1987 239.50 j 225.00 101.00 j 3.50 i 1.50 k 0.00 c 0.00 k 0.00 x 0.00 i 0.00 i 55.50 k 229.50 k 225.00
1988 230.50 k 134.50 116.25 a 32.50 i 2.00 m 0.00 c 0.00 k 0.00 0.00 l 0.00 j 79.50 i 190.50 k 250.75
1989 265.50 j 204.30 a 29.00 i 5.00 j 3.50 i 0.00 0.00 k 0.00 0.00 j 7.00 i 42.50 j 157.50 m 204.30
1990 238.50 i 286.00 98.00 i 5.50 j 1.50 i 0.00 i 0.00 j 0.00 0.00 k 0.00 84.00 k 209.50 l 286.00
1991 240.50 i 61.00 183.50 j 19.50 1.50 i 0.00 j 0.00 i 0.00 i 0.00 j 36.50 48.00 l 182.00 l 117.00
1992 252.00 i 101.00 j 83.00 i 22.00 i 0.00 k 0.00 i 0.00 i 0.00 j 0.00 i 0.00 i 96.50 k 256.50 k 0.00
1993 192.50 k 233.50 81.00 0.50 i 0.00 k 0.00 a 0.00 j 0.00 i 0.00 i 0.00 j 67.50 j 141.50 l 314.50
1994 137.50 j 244.50 60.50 23.50 j 0.00 j 0.00 0.00 k 0.00 0.00 i 6.00 j 134.50 j 191.00 k 305.00
1995 232.50 j 69.50 88.00 44.00 k 9.00 i 0.00 a 0.00 k 0.00 a 0.00 j 0.00 i 13.00 j 97.00 l 157.50
1996 129.50 i 120.00 56.50 j 0.00 i 0.00 i 0.00 j 0.00 i 0.00 i 0.00 j 54.00 20.50 k 149.50 k 174.00
1997 221.00 i 203.50 20.50 m 72.00 0.00 j 0.00 i 0.00 i 0.00 j 0.00 j 4.00 29.50 l 266.00 j 279.50
1998 172.00 j 290.50 95.50 i 109.00 12.00 l 0.00 h 0.00 0.00 j 0.00 i 2.50 i 43.50 k 214.50 j 399.50
1999 117.00 k 108.00 h 59.00 h 78.50 i 2.50 k 0.00 h 0.00 l 0.00 i 0.00 i 0.00 k 26.00 j 161.50 k 0.00
2000 111.50 j 86.00 h 104.00 h 5.50 k 0.00 i 0.00 h 0.00 k 0.00 h 0.00 j 19.00 i 160.00 j 110.00 l 0.00
2001 248.00 i 191.00 h 90.50 i 56.50 j 0.00 i 0.00 i 0.00 j 0.00 h 0.00 k 0.00 h 64.00 j 233.00 l 0.00
2002 203.50 i 140.00 57.50 k 2.50 0.00 i 0.00 j 0.00 i 0.00 i 0.00 j 0.00 i 11.00 k 175.00 k 142.50
2003 62.50 i 158.50 h 70.00 j 38.50 h 0.00 j 0.00 i 0.00 i 0.00 j 0.00 i 0.00 i 97.50 j 185.00 h 0.00
2004 191.50 i 174.00 i 60.50 h 13.00 i 0.00 k 0.00 h 0.00 i 0.00 i 0.00 h 15.00 j 155.00 h 226.00 h 0.00
2005 155.50 l 166.00 h 0.00 z 8.00 i 0.00 j 0.00 z 0.00 j 0.00 i 0.00 h 8.50 j 0.00 z 129.50 i 0.00
2006 141.50 i 73.00 h 117.50 h 18.50 w 0.00 r 0.00 p 0.00 y 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 380.10 234.38 155.38 48.89 7.65 0.01 0.00 0.00 0.01 16.70 139.50 323.64 1311.60
S.D. 95.83 89.42 71.81 33.48 13.20 0.06 0.00 0.00 0.06 21.33 69.22 98.55 238.49
SKEW 0.64 0.25 0.42 0.66 2.94 8.60 0.00 0.00 8.19 2.67 0.20 -0.29 -0.21
MAX 685.50 471.50 355.00 162.50 71.09 0.50 0.00 0.00 0.50 118.00 272.00 532.00 1786.50
MIN 158.50 61.00 20.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 95.00 703.50
NO YRS 70 83 73 75 71 77 71 75 70 76 68 67 59