CASA GRANDE, ARIZONA

Monthly Total Heating Degree Days

(021306)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 200907
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
1898 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
1899 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
1900 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
1901 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
1902 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
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 f 0.00 z 0.00 e 2.50 72.50 407.00 482.00
1904 548.50 0.00 z 0.00 z 26.00 8.00 0.00 a 0.00 0.00 0.00 z 26.00 230.17 a 384.50 1223.17
1905 333.50 287.26 a 106.95 a 35.50 26.50 0.00 0.00 0.00 0.00 0.00 195.50 513.57 a 1498.78
1906 497.00 214.50 146.00 116.00 0.00 0.00 0.00 0.00 0.00 108.50 0.00 z 411.27 a 1493.27
1907 0.00 z 218.50 0.00 z 21.50 0.00 0.00 0.00 0.00 0.00 0.00 153.00 244.50 637.50
1908 361.50 281.00 119.00 3.00 0.00 0.00 0.00 0.00 0.00 a 0.00 z 0.00 z 260.50 1025.00
1909 354.00 422.00 123.50 5.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 904.50
1910 0.00 z 185.50 55.50 10.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 251.00
1911 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 0.00 z 0.00 z 477.50 477.50
1912 0.00 z 270.84 a 139.50 30.00 0.00 z 0.00 z 0.00 p 0.00 z 0.00 u 0.00 z 0.00 z 0.00 z 440.34
1913 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
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 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
1916 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
1917 0.00 z 0.00 z 296.16 c 76.00 3.00 0.00 0.00 s 0.00 z 0.00 z 0.00 z 0.00 z 58.00 y 375.16
1918 0.00 z 0.00 z 0.00 z 0.00 z 0.00 i 0.00 0.00 0.00 0.00 18.50 233.50 527.50 779.50
1919 504.00 413.50 218.00 23.00 0.50 0.00 a 0.00 f 0.00 0.00 54.50 263.50 0.00 z 1477.00
1920 519.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 540.90 b 1060.40
1921 448.50 280.00 94.11 c 80.00 11.88 a 0.00 h 0.00 m 0.00 z 0.00 m 3.50 n 0.00 z 0.00 z 914.49
1922 428.50 h 0.00 z 288.19 d 129.11 b 14.00 o 0.00 z 0.00 k 0.00 h 0.00 h 44.78 d 270.00 f 411.94 e 874.01
1923 0.00 z 496.16 c 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 496.16
1924 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
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 s 0.00 0.00 a 0.00 32.00 274.50 434.00 740.50
1926 569.37 a 267.04 a 147.00 0.00 z 0.00 z 0.00 0.00 0.00 0.00 3.00 0.00 z 456.00 1442.40
1927 375.74 b 234.50 243.50 96.50 8.50 0.00 0.00 0.00 a 0.00 n 12.50 i 98.28 a 516.67 d 1573.68
1928 529.87 d 349.00 103.00 78.00 0.00 0.00 0.00 0.00 0.00 z 29.45 a 0.00 z 483.82 c 1573.14
1929 528.00 410.50 242.00 90.00 b 2.00 0.00 0.00 0.00 0.00 65.00 274.00 359.00 1970.50
1930 465.50 213.00 200.00 31.00 56.00 0.00 0.00 0.00 0.00 20.50 225.50 486.00 1697.50
1931 462.50 263.50 185.00 0.50 0.00 0.00 0.00 0.00 0.00 29.50 330.50 560.00 1831.50
1932 486.50 i 298.00 181.50 46.50 j 5.00 0.00 0.00 0.00 0.00 49.00 165.50 537.50 1236.50
1933 570.00 518.00 196.50 64.00 h 28.50 0.00 0.00 0.00 0.00 0.00 192.50 420.50 1926.00
1934 450.00 186.00 33.00 29.50 0.00 0.00 0.00 0.00 0.00 8.00 232.50 369.00 1308.00
1935 397.00 247.50 281.50 43.00 8.50 0.00 0.00 0.00 0.00 48.64 b 294.00 423.50 1743.64
1936 383.00 h 309.87 b 112.00 44.50 1.00 0.00 0.00 e 0.00 a 0.00 h 22.50 148.00 435.00 1072.87
1937 686.00 326.00 201.50 49.00 0.00 0.00 0.00 0.00 0.00 c 0.00 183.00 271.00 f 1445.50
1938 389.00 299.00 205.50 55.00 9.50 0.00 0.00 0.00 0.00 j 0.00 z 362.50 399.00 1719.50
1939 475.00 528.50 164.00 h 11.90 a 0.00 z 0.00 d 0.00 0.00 k 0.00 z 7.50 x 73.97 a 66.00 m 1089.36
1940 214.50 h 315.24 b 118.46 c 27.32 b 0.00 c 0.00 d 0.00 c 0.00 h 0.00 f 64.30 d 155.50 r 271.50 f 525.32
1941 431.02 e 248.96 e 210.50 145.00 6.20 a 0.00 0.00 a 0.00 b 0.00 63.00 193.50 437.50 1735.68
1942 444.00 412.00 286.23 a 67.00 15.00 0.00 0.00 0.00 0.00 30.00 138.00 390.50 1782.73
1943 430.00 203.00 16.50 v 38.50 0.00 0.00 0.00 0.00 0.00 38.00 203.00 442.00 1354.50
1944 544.00 427.00 310.00 91.50 1.50 0.00 0.00 0.00 0.00 0.00 287.50 458.00 2119.50
1945 505.00 291.31 b 253.50 98.00 0.00 0.00 0.00 0.00 0.00 0.00 z 181.50 0.00 z 1329.31
1946 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 0.00 0.00 71.00 362.50 408.00 841.50
1947 559.00 208.50 129.50 41.50 0.00 0.00 0.00 0.00 0.00 7.50 315.00 461.50 1722.50
1948 434.50 363.00 286.50 35.00 0.00 0.00 0.00 0.00 0.00 17.00 318.50 439.50 1894.00
1949 678.00 395.50 174.50 44.50 0.00 e 0.00 g 0.00 0.00 0.00 74.00 59.50 430.50 1856.50
1950 477.50 202.50 96.32 c 11.54 d 11.33 e 0.00 c 0.00 0.00 0.50 0.00 63.00 218.00 1080.69
1951 425.00 286.50 163.00 50.50 27.50 0.00 0.00 0.00 0.00 12.50 165.50 382.00 1512.50
1952 453.00 327.00 329.00 53.50 0.00 0.00 0.00 0.00 0.00 a 0.00 254.00 427.50 1844.00
1953 325.00 311.00 140.50 53.50 19.00 0.00 b 0.00 0.00 0.00 27.42 e 153.62 a 476.50 1506.54
1954 391.00 115.50 176.00 3.50 5.50 0.00 0.00 0.00 0.00 33.50 142.50 446.50 1314.00
1955 590.00 469.00 203.50 89.00 20.15 a 0.00 0.00 0.00 j 0.00 7.46 d 0.00 z 0.00 z 1379.11
1956 0.00 z 279.50 f 148.00 46.00 0.00 0.00 0.00 0.00 0.00 45.00 275.50 440.00 954.50
1957 362.00 130.50 120.50 45.50 2.50 0.00 0.00 0.00 0.00 28.00 302.00 369.50 1360.50
1958 430.50 239.50 288.50 84.50 0.00 0.00 0.00 0.00 0.00 10.00 186.50 303.00 1542.50
1959 362.00 328.00 142.00 0.50 4.00 0.00 0.00 0.00 0.00 25.50 118.50 418.00 1398.50
1960 569.00 441.00 70.50 13.50 0.50 0.00 0.00 0.00 0.00 14.50 109.50 h 439.00 1548.00
1961 290.00 i 216.00 97.81 b 13.50 0.00 0.00 0.00 0.00 0.00 44.50 243.00 419.00 1033.81
1962 439.50 234.00 264.50 0.50 i 0.00 0.00 0.00 0.00 0.00 3.00 101.50 320.00 1362.50
1963 507.50 167.00 157.00 62.50 0.00 0.00 0.00 0.00 0.00 0.00 173.50 427.00 1494.50
1964 550.00 440.00 262.50 78.50 16.50 0.00 0.00 0.00 0.00 0.00 274.00 392.00 2013.50
1965 345.50 299.00 226.00 92.14 b 4.13 a 0.00 0.00 0.00 1.00 0.00 z 65.56 c 0.00 z 1033.33
1966 246.00 q 400.50 128.28 b 9.00 0.00 0.00 0.00 0.00 0.00 c 4.50 97.00 386.00 1025.28
1967 418.50 205.50 82.50 55.00 7.50 0.00 0.00 0.00 0.00 2.00 84.50 547.00 1402.50
1968 399.50 168.00 139.50 c 69.50 0.53 b 0.00 0.00 0.00 c 0.00 a 5.68 a 199.82 b 474.09 b 1456.63
1969 296.00 300.22 a 278.47 b 11.00 16.00 0.00 b 0.00 a 0.00 a 0.00 29.45 a 127.50 331.00 1389.64
1970 399.90 a 177.52 c 161.72 a 87.12 d 3.21 b 0.00 0.00 a 0.00 b 0.00 d 33.21 c 135.00 e 422.12 a 1419.79
1971 409.56 e 266.54 b 131.75 e 36.00 e 2.87 d 0.00 c 0.00 c 0.00 i 0.00 d 88.83 e 216.92 d 313.00 n 1152.47
1972 439.00 216.50 47.03 b 16.73 d 0.00 0.00 a 0.00 a 0.00 c 0.00 b 39.50 266.25 b 0.00 z 1025.02
1973 466.00 268.07 a 297.50 61.00 2.00 0.00 0.00 0.00 0.00 18.00 233.28 a 419.03 b 1764.88
1974 454.50 345.50 140.50 32.00 3.50 0.00 0.00 0.00 0.00 12.50 235.80 e 576.94 d 1801.24
1975 494.00 399.78 a 265.00 147.32 b 24.59 b 0.00 0.00 0.00 0.00 47.50 230.00 450.00 2058.19
1976 424.00 190.00 222.50 70.50 0.00 0.00 0.00 0.00 0.00 63.00 252.50 516.50 1739.00
1977 524.50 349.00 331.50 71.50 16.00 0.00 0.00 0.00 0.00 3.50 179.00 0.00 z 1475.00
1978 386.00 283.00 0.00 z 45.00 2.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 716.00
1979 529.50 341.50 240.50 55.00 4.00 0.00 0.00 0.00 0.00 17.50 281.90 a 330.67 a 1800.56
1980 327.00 211.00 184.50 64.66 a 3.00 0.00 0.00 0.00 0.00 58.26 b 175.00 252.13 a 1275.55
1981 281.00 217.50 165.50 18.50 0.00 a 0.00 0.00 0.00 0.00 a 22.70 c 142.50 0.00 z 847.70
1982 439.50 240.00 187.00 28.00 0.00 0.00 0.00 0.00 0.00 49.00 217.50 482.00 1643.00
1983 409.00 308.50 207.50 130.50 4.50 0.00 0.00 0.00 0.00 0.00 230.00 376.00 1666.00
1984 436.00 343.00 131.50 78.50 0.00 0.00 z 0.00 0.00 0.00 27.50 200.50 426.50 1643.50
1985 424.50 300.22 a 139.00 10.50 0.00 0.00 0.00 0.00 0.00 7.50 250.50 437.50 1569.72
1986 263.50 237.50 94.50 18.50 3.50 0.00 0.00 0.00 0.00 31.50 142.50 382.00 1173.50
1987 418.50 257.50 171.00 6.00 0.00 0.00 0.00 0.00 0.00 0.00 184.50 480.50 1518.00
1988 434.00 203.50 139.00 41.50 7.00 0.00 0.00 0.00 0.00 0.00 201.00 416.50 1442.50
1989 441.00 207.50 56.00 0.00 0.00 0.00 0.00 0.00 0.00 31.50 137.50 419.50 1293.00
1990 430.00 350.00 133.50 5.50 0.00 0.00 0.00 0.00 0.00 0.00 l 96.00 k 484.50 1403.50
1991 0.00 z 0.00 z 329.00 35.00 2.50 0.00 0.00 0.00 0.00 44.50 188.00 341.00 940.00
1992 383.50 194.50 129.50 15.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 z 473.00 1196.00
1993 288.50 262.00 124.50 21.50 0.00 0.00 0.00 0.00 0.00 1.00 198.00 381.50 1277.00
1994 384.00 291.00 75.00 25.86 a 0.00 0.00 0.00 0.00 0.00 25.00 224.00 323.50 1348.36
1995 376.50 122.00 0.00 z 71.00 5.50 0.00 0.00 0.00 0.00 2.00 24.00 268.00 869.00
1996 295.50 109.00 66.00 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 470.50
1997 0.00 z 231.00 51.50 44.00 0.00 0.00 0.00 0.00 0.00 26.00 110.00 451.50 914.00
1998 323.00 350.50 190.00 118.50 4.00 0.00 0.00 z 0.00 0.00 11.00 143.00 354.00 1494.00
1999 313.74 b 175.50 76.39 c 107.68 b 4.81 b 0.00 a 0.00 b 0.00 z 0.00 f 0.00 z 72.00 f 351.16 b 1029.28
2000 301.06 e 161.50 0.00 z 7.00 l 0.00 j 0.00 z 0.00 s 0.00 z 0.00 z 44.36 b 386.50 407.50 1300.92
2001 431.50 311.63 a 145.00 65.69 a 0.00 0.00 0.00 0.00 0.00 0.00 126.00 490.00 1569.82
2002 418.50 257.00 193.00 3.50 2.00 0.00 0.00 0.00 0.00 16.50 122.50 449.00 1462.00
2003 247.00 275.50 145.00 60.50 2.00 0.00 0.00 0.00 0.00 0.00 216.50 389.50 1336.00
2004 364.00 371.50 63.50 18.50 0.00 0.00 0.00 0.00 0.00 0.50 q 0.00 z 0.00 z 817.50
2005 288.50 219.50 136.00 10.50 0.00 0.00 0.00 0.00 0.00 0.00 93.50 359.50 1107.50
2006 346.00 186.50 165.50 13.00 0.00 0.00 0.00 0.00 0.00 2.00 87.50 418.50 1219.00
2007 459.50 210.00 85.00 15.50 0.00 0.00 0.00 0.00 0.00 2.00 81.00 e 502.50 1355.50
2008 416.50 329.00 28.50 n 3.50 3.00 0.00 0.00 0.00 0.00 j 19.00 g 83.00 346.00 1181.00
2009 289.50 207.00 62.50 35.00 0.00 0.00 0.00 g 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 594.00
Period of Record Statistics
MEAN 428.79 281.79 168.81 46.71 4.74 0.00 0.00 0.00 0.02 24.03 190.95 418.78 1553.49
S.D. 89.85 91.31 75.54 36.21 8.73 0.00 0.00 0.00 0.12 24.03 79.57 72.92 256.01
SKEW 0.36 0.57 0.40 0.80 3.16 0.00 0.00 0.00 7.04 1.07 0.20 -0.42 0.29
MAX 686.00 528.50 331.50 147.32 56.00 0.00 0.00 0.00 1.00 108.50 386.50 576.94 2119.50
MIN 247.00 109.00 33.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 24.00 218.00 1080.69
NO YRS 83 91 87 90 90 90 88 83 81 81 79 81 46