WELLTON, ARIZONA

Monthly Total Heating Degree Days

(029211)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 198012
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
1922 0.00 z 0.00 z 24.00 q 65.50 12.40 a 0.00 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 77.90
1923 125.50 v 0.00 z 0.00 z 10.80 e 0.00 a 0.00 0.00 0.00 0.00 24.50 141.92 d 0.00 z 177.22
1924 442.50 214.50 235.00 0.00 z 0.00 0.00 z 0.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 892.00
1925 0.00 z 0.00 z 50.50 m 67.00 0.00 0.00 0.00 a 0.00 0.00 a 16.65 d 295.34 a 405.00 783.99
1926 536.00 241.50 88.19 b 27.00 0.00 a 0.00 0.00 b 0.00 a 0.00 0.00 a 144.83 a 436.50 1474.02
1927 339.00 176.30 a 173.17 b 73.00 3.00 0.00 0.00 0.00 0.00 7.50 109.50 475.50 1356.97
1928 411.78 a 305.50 114.50 44.50 0.00 0.00 c 0.00 a 0.00 c 0.00 19.00 195.52 a 447.90 b 1538.70
1929 391.00 g 339.92 c 159.28 b 69.23 d 1.07 b 0.00 a 0.00 0.00 b 0.00 b 39.27 a 272.07 a 346.50 1227.33
1930 415.40 a 135.85 a 147.00 28.97 a 50.12 a 0.00 c 0.00 b 0.00 c 0.00 b 11.50 154.66 a 514.50 1457.99
1931 432.50 192.37 a 105.40 a 0.00 0.00 a 0.00 0.00 a 0.00 d 0.00 c 8.02 b 253.89 c 470.17 a 1462.34
1932 508.92 a 272.81 b 89.12 c 38.08 d 2.77 c 0.00 a 0.00 b 0.00 a 0.00 a 18.37 d 130.18 b 0.00 z 1060.25
1933 499.21 b 414.50 88.50 60.00 a 21.38 b 0.00 b 0.00 i 0.00 g 0.00 0.00 d 134.40 e 372.00 d 1589.99
1934 368.68 c 140.00 b 4.28 b 13.39 b 0.00 c 0.00 q 0.00 k 0.00 j 0.00 a 3.50 182.88 d 322.18 c 1034.91
1935 373.72 d 173.38 b 180.83 d 14.42 d 5.17 d 0.00 g 0.00 a 0.00 j 0.00 e 22.70 c 256.00 f 299.50 f 770.23
1936 417.35 d 234.32 d 59.50 h 9.00 f 0.00 e 0.00 a 0.00 c 0.00 a 0.00 b 2.98 e 150.00 c 376.59 d 1181.25
1937 675.00 264.44 a 148.59 b 12.41 a 0.00 a 0.00 c 0.00 e 0.00 b 0.00 0.00 d 105.00 g 243.72 b 1344.17
1938 342.15 d 232.08 b 119.41 d 22.00 0.00 e 0.00 a 0.00 0.00 0.00 c 11.92 e 338.04 b 359.27 c 1424.86
1939 408.00 418.92 b 148.36 c 0.00 g 0.00 c 0.00 b 0.00 d 0.00 d 0.00 c 18.37 d 114.83 a 312.07 a 1420.54
1940 317.23 a 227.54 c 82.31 b 4.80 e 0.00 c 0.00 0.00 d 0.00 a 0.00 a 16.53 a 268.45 a 292.43 a 1209.30
1941 360.63 a 155.04 a 112.63 a 61.03 a 0.00 b 0.00 b 0.00 a 0.00 e 0.00 c 32.66 c 190.71 b 370.40 b 1283.11
1942 404.11 c 349.46 b 194.02 b 25.18 b 1.00 h 0.00 f 0.00 a 0.00 l 0.00 e 16.03 b 154.44 c 209.00 l 1143.24
1943 294.00 f 202.46 b 53.70 c 33.46 d 0.00 b 0.00 a 0.00 c 0.00 b 0.00 b 20.15 a 229.66 a 386.00 925.42
1944 459.32 a 351.62 a 141.16 c 19.62 d 0.00 c 0.00 0.00 m 0.00 d 0.00 f 0.00 225.58 d 419.00 1616.29
1945 456.14 c 196.50 i 238.04 c 29.50 n 0.00 x 0.00 f 0.00 e 0.00 0.00 s 4.50 g 145.00 j 514.82 c 1209.00
1946 299.50 h 357.50 138.35 d 13.89 c 0.00 h 0.00 d 0.00 d 0.00 h 0.00 25.50 296.79 b 360.52 d 1192.55
1947 511.00 165.50 104.37 a 16.00 0.00 0.00 0.00 b 0.00 0.00 b 0.57 d 200.50 476.37 a 1474.31
1948 339.93 b 304.50 b 232.50 20.00 0.00 0.00 0.00 0.00 a 0.00 d 9.82 a 307.50 477.40 a 1691.65
1949 665.43 b 376.38 b 162.20 c 19.82 b 0.00 0.00 b 0.00 n 0.00 m 0.00 z 0.00 z 0.00 z 0.00 z 1223.83
1950 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
1951 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 200.69 a 443.30 a 643.99
1952 492.50 320.50 238.24 d 11.67 c 0.00 0.00 0.00 0.00 0.00 0.00 a 272.00 443.00 1777.91
1953 282.62 a 292.00 128.50 45.50 3.50 0.00 0.00 b 0.00 0.00 25.00 154.50 489.00 1420.62
1954 427.50 118.50 196.85 a 5.50 2.00 0.00 0.00 a 0.00 0.00 b 23.50 107.00 401.93 b 1282.78
1955 514.00 380.00 141.50 47.50 10.50 0.00 0.00 0.00 0.00 1.00 216.43 b 347.50 1658.43
1956 347.64 c 427.00 151.26 b 57.50 0.00 0.00 0.00 c 0.00 h 0.00 47.65 d 261.50 432.50 1725.05
1957 379.50 133.50 95.21 c 39.50 0.50 0.00 c 0.00 d 0.00 h 0.00 10.50 272.50 374.50 1305.71
1958 390.50 176.50 198.83 b 56.00 0.00 0.00 b 0.00 a 0.00 e 0.00 a 8.55 b 187.50 337.50 1355.38
1959 350.00 302.50 87.50 0.00 b 3.00 0.00 b 0.00 b 0.00 a 0.00 f 22.50 144.83 a 400.50 1310.83
1960 519.25 a 328.00 68.89 d 20.89 b 0.00 0.00 0.00 b 0.00 0.00 4.00 201.50 477.50 1620.03
1961 355.50 212.50 119.19 b 15.50 0.00 b 0.00 a 0.00 b 0.00 a 0.00 62.50 265.80 e 441.00 1471.99
1962 408.50 257.70 a 257.30 a 1.55 a 4.02 d 0.00 c 0.00 c 0.00 e 0.00 0.00 122.00 341.50 1392.57
1963 537.50 98.50 178.25 c 79.66 a 0.00 0.00 f 0.00 0.00 a 0.00 d 0.00 b 156.50 448.97 b 1499.37
1964 566.30 c 401.86 a 240.50 55.71 b 31.00 c 0.00 d 0.00 0.00 b 0.00 0.00 300.54 b 396.00 1991.91
1965 369.50 271.00 177.50 f 81.00 4.28 b 0.00 b 0.00 0.00 0.00 1.50 110.00 412.50 1249.78
1966 513.50 389.31 b 117.50 8.04 b 0.00 a 0.00 0.00 h 0.00 c 0.00 4.50 133.50 389.50 1555.84
1967 458.05 b 249.85 b 113.50 110.50 4.50 0.00 0.00 b 0.00 0.00 5.54 c 68.04 b 506.00 1515.97
1968 420.50 147.50 115.00 31.80 e 0.00 0.00 a 0.00 0.00 b 0.00 b 0.55 c 111.00 g 530.50 1245.85
1969 289.00 326.85 b 169.39 c 4.04 d 15.50 d 0.00 j 0.00 0.00 c 0.00 c 17.22 d 131.25 b 377.00 1330.25
1970 429.00 128.00 h 160.88 b 83.00 1.79 e 0.00 0.00 d 0.00 e 0.00 a 23.50 f 168.89 c 441.00 1284.56
1971 451.50 260.00 145.50 51.92 d 11.50 0.00 e 0.00 0.00 0.00 h 71.96 c 216.11 c 425.50 f 1208.50
1972 501.50 218.50 34.32 c 28.00 0.00 d 0.00 0.00 d 0.00 f 0.00 e 39.02 b 267.32 b 471.95 b 1560.61
1973 477.50 275.15 b 254.50 62.40 e 8.35 e 0.00 0.00 d 0.00 0.00 i 6.50 205.00 381.00 1670.40
1974 398.50 290.00 110.10 b 18.00 5.00 0.00 0.00 0.00 0.00 14.50 159.00 490.50 1485.60
1975 436.50 333.00 223.50 149.50 15.50 0.00 0.00 0.00 0.00 23.50 207.00 400.50 1789.00
1976 403.00 202.50 193.50 90.00 d 4.50 0.00 0.00 0.00 0.00 16.50 145.00 403.00 1458.00
1977 402.00 212.50 246.50 32.50 6.50 0.00 0.00 0.00 0.00 a 0.50 88.50 253.00 1242.00
1978 342.50 208.50 83.00 35.00 2.00 0.00 0.00 0.00 0.00 0.50 190.50 489.50 1351.50
1979 499.62 a 286.00 164.82 a 29.00 4.00 0.00 b 0.00 0.00 0.00 8.50 208.50 321.92 e 1522.36
1980 268.50 147.00 158.21 b 51.00 9.50 0.00 0.00 d 0.00 0.00 l 0.00 z 0.00 z 147.00 j 634.21
Period of Record Statistics
MEAN 429.73 259.87 147.18 38.91 4.51 0.00 0.00 0.00 0.00 14.54 193.07 408.60 1488.82
S.D. 86.12 86.89 59.17 30.63 8.80 0.00 0.00 0.00 0.00 15.88 65.10 67.87 180.83
SKEW 0.64 0.14 0.06 1.18 3.34 0.00 0.00 0.00 0.00 1.66 0.29 -0.33 0.90
MAX 675.00 427.00 257.30 149.50 50.12 0.00 0.00 0.00 0.00 71.96 338.04 530.50 1991.91
MIN 268.50 98.50 4.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 68.04 243.72 1209.30
NO YRS 51 52 52 53 54 50 50 46 48 51 50 49 26