YUMA VALLEY, ARIZONA

Monthly Total Heating Degree Days

(029657)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 199212
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 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 207.93 a 467.50 675.43
1931 426.00 0.00 z 135.37 a 0.00 0.00 0.00 0.00 0.00 0.00 26.00 341.00 520.50 1448.87
1932 557.50 303.96 b 146.50 75.50 12.00 0.00 0.00 a 0.00 0.00 c 38.00 111.50 508.50 1753.46
1933 501.50 427.00 108.00 90.00 42.00 0.00 0.00 0.00 0.00 0.00 140.69 a 366.50 1675.69
1934 389.50 177.50 18.50 16.50 0.00 0.00 0.00 a 0.00 2.00 13.90 b 174.83 a 326.05 c 1118.78
1935 13.50 z 220.23 b 231.50 44.50 17.00 0.00 0.00 0.00 0.00 z 49.08 a 281.00 380.50 1223.81
1936 411.50 249.00 88.50 37.00 0.00 0.00 0.00 a 0.00 0.50 8.50 149.50 382.00 1326.50
1937 694.00 307.00 186.00 47.00 0.00 0.00 0.00 0.00 z 0.00 a 0.00 148.50 244.50 1627.00
1938 332.00 300.50 246.00 61.00 16.50 0.00 0.00 0.00 0.00 34.50 341.00 334.50 1666.00
1939 428.50 454.50 201.50 21.00 0.00 0.00 0.00 0.00 0.00 29.50 114.50 256.50 1506.00
1940 301.50 280.00 129.00 30.52 a 0.00 0.00 0.00 0.00 0.00 b 20.67 d 242.50 269.00 1273.18
1941 394.00 170.50 113.50 87.50 0.00 0.00 0.00 0.00 0.00 40.50 166.00 343.07 a 1315.07
1942 334.00 328.50 199.50 42.00 12.00 0.00 0.00 0.00 0.00 23.50 148.97 a 309.50 1397.97
1943 369.00 205.00 73.00 48.50 2.50 0.00 0.00 0.00 0.00 30.00 186.00 386.00 1300.00
1944 457.00 390.00 145.00 j 53.00 4.50 1.00 0.00 z 0.00 d 0.00 3.50 230.00 349.00 1488.00
1945 432.97 a 270.00 235.00 96.50 2.50 0.00 0.00 0.00 0.00 5.00 205.00 420.50 1667.47
1946 349.50 338.00 127.00 34.00 0.00 0.00 0.00 0.00 0.00 29.50 246.50 286.00 1410.50
1947 442.50 165.50 89.00 34.50 0.00 0.00 0.00 0.00 0.00 7.00 312.00 398.50 1449.00
1948 359.00 314.00 279.00 47.00 4.50 0.00 0.00 0.00 d 0.52 a 11.50 f 249.00 471.50 1724.52
1949 652.50 390.92 b 185.45 c 31.67 c 0.00 e 0.00 e 0.00 s 0.00 0.00 b 54.50 40.00 415.92 a 1770.95
1950 460.87 a 181.00 94.55 a 24.00 7.23 a 0.00 0.00 f 0.00 b 0.00 0.00 73.27 d 188.67 b 1029.59
1951 375.50 276.00 151.38 a 32.59 a 14.00 0.00 a 0.00 b 0.00 f 0.00 19.00 156.72 a 396.50 1421.69
1952 469.50 279.50 245.00 8.00 0.00 0.00 0.00 0.00 0.00 0.00 224.00 367.00 1593.00
1953 217.00 261.50 130.50 40.50 15.50 a 0.00 0.00 a 0.00 0.00 19.00 104.00 394.50 1182.50
1954 366.00 92.50 179.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 637.50
1955 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
1956 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
1957 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
1958 244.00 j 185.63 a 241.00 67.00 0.50 0.00 d 0.00 j 0.00 k 0.00 c 2.50 f 126.96 b 200.00 821.09
1959 263.00 298.00 48.00 0.50 2.50 0.00 a 0.00 y 0.00 d 0.00 19.50 100.00 330.15 a 1061.65
1960 468.21 b 325.00 50.24 b 20.00 1.55 a 0.00 0.00 s 0.00 h 0.00 4.50 158.50 381.82 a 1409.81
1961 276.00 175.00 98.50 8.79 a 0.00 0.00 0.00 w 0.00 g 0.00 34.21 b 203.00 386.98 a 1182.48
1962 349.00 209.00 215.40 b 0.00 6.20 a 0.00 c 0.00 0.00 0.00 1.00 82.00 292.00 1154.60
1963 486.00 92.00 145.50 80.50 0.00 0.00 0.00 0.00 0.00 1.00 129.50 358.00 1292.50
1964 490.50 378.50 235.50 67.50 28.00 0.00 0.00 0.00 0.00 0.00 235.00 314.50 1749.50
1965 319.00 231.00 159.50 71.50 3.50 0.00 0.00 0.00 0.00 3.00 82.00 350.00 1219.50
1966 444.00 338.00 88.50 9.00 0.00 0.00 0.00 0.00 0.00 7.00 81.00 272.00 1239.50
1967 361.00 178.37 a 70.50 98.00 11.50 0.00 0.00 0.00 0.00 2.00 37.00 430.38 a 1188.75
1968 339.00 98.00 66.00 27.50 1.50 0.00 0.00 0.00 0.00 0.00 75.00 442.50 1049.50
1969 214.50 273.00 181.50 11.50 7.50 0.00 0.00 0.00 0.00 16.00 78.50 290.00 1072.50
1970 353.00 170.50 140.00 81.50 0.50 0.00 0.00 0.00 0.00 21.50 108.50 353.00 1228.50
1971 369.50 226.50 157.00 63.00 10.00 0.00 0.00 0.00 0.00 98.50 181.00 442.50 1548.00
1972 422.00 183.00 31.00 27.50 0.00 0.00 0.00 0.00 0.00 20.00 207.50 381.50 1272.50
1973 413.50 215.00 214.50 43.50 8.50 0.00 0.00 0.00 0.00 7.00 144.00 253.50 1299.50
1974 324.00 241.00 99.00 13.00 4.00 0.00 0.00 0.00 0.00 10.50 87.00 397.00 1175.50
1975 349.50 278.00 184.00 124.50 9.50 0.00 0.00 0.00 0.00 22.50 118.50 303.00 1389.50
1976 316.50 159.00 147.00 77.00 3.00 0.00 0.00 0.00 0.00 11.00 92.50 313.50 1119.50
1977 351.00 165.00 197.50 39.50 2.00 0.00 0.00 0.00 0.00 0.00 57.00 173.50 985.50
1978 303.50 194.50 70.00 36.00 1.50 0.00 0.00 0.00 0.00 0.00 170.50 430.50 1206.50
1979 450.50 265.50 125.00 23.00 1.00 0.00 0.00 0.00 0.00 7.50 158.50 269.00 1300.00
1980 230.50 115.50 122.50 49.00 5.00 0.00 0.00 0.00 0.00 16.00 119.50 171.50 829.50
1981 176.50 172.00 113.31 b 16.50 0.00 0.00 c 0.00 0.00 0.00 17.00 k 89.50 222.50 790.31
1982 356.50 148.00 135.00 24.00 0.00 0.00 0.00 0.00 0.00 8.00 82.50 k 356.00 1027.50
1983 254.50 186.00 103.50 66.50 0.00 0.00 0.00 0.00 0.00 0.00 130.50 236.00 977.00
1984 251.00 181.50 56.00 53.00 0.00 0.00 0.00 0.00 0.00 19.00 172.50 345.50 1078.50
1985 336.00 263.00 122.50 7.50 0.00 0.00 0.00 0.00 0.00 5.00 175.00 302.00 1211.00
1986 126.50 166.50 59.00 9.00 1.00 0.00 0.00 0.00 2.00 3.50 75.00 320.00 762.50
1987 352.50 182.00 113.50 14.50 0.00 0.00 0.00 0.00 0.00 0.00 112.00 414.50 1189.00
1988 353.50 151.00 90.50 24.00 5.50 0.00 r 0.00 o 0.00 j 0.00 l 0.00 l 81.00 m 179.00 l 624.50
1989 358.50 245.00 47.50 7.00 0.00 0.00 0.00 0.00 0.00 11.50 41.00 i 307.50 977.00
1990 350.00 311.00 118.00 5.50 0.00 0.00 0.00 0.00 0.00 0.00 117.50 456.50 1358.50
1991 355.50 87.50 217.00 21.50 4.00 0.00 0.00 0.00 i 0.00 l 27.50 97.50 152.50 o 810.50
1992 292.00 121.00 69.75 a 8.57 b 0.00 0.00 o 0.00 0.00 z 0.00 z 0.00 z 0.00 z 417.00 908.32
Period of Record Statistics
MEAN 371.54 234.35 136.65 39.65 4.63 0.02 0.00 0.00 0.09 15.64 152.67 345.56 1288.31
S.D. 101.62 85.94 63.21 29.11 7.62 0.13 0.00 0.00 0.39 18.06 71.82 81.28 232.58
SKEW 0.57 0.43 0.28 0.74 2.77 7.28 0.00 0.00 4.50 2.15 0.79 -0.17 0.16
MAX 694.00 454.50 279.00 124.50 42.00 1.00 0.00 0.00 2.00 98.50 341.00 520.50 1753.46
MIN 126.50 87.50 18.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 37.00 171.50 762.50
NO YRS 57 58 58 58 58 56 50 50 54 53 55 57 40