DAVIS DAM #2, ARIZONA

Monthly Total Heating Degree Days

(022439)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 197707
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
1958 237.00 144.50 190.50 48.00 0.00 0.00 0.00 0.00 0.00 0.50 115.00 196.50 932.00
1959 259.50 262.50 37.50 0.00 0.00 0.00 0.00 0.00 0.00 17.71 c 88.33 c 320.33 a 985.88
1960 510.98 a 359.71 c 78.00 11.38 a 0.00 b 0.00 a 0.00 b 0.00 0.00 b 2.50 129.64 b 362.24 d 1454.46
1961 303.91 c 232.62 b 114.00 11.38 a 0.00 b 0.00 z 0.00 c 0.00 e 0.00 c 20.84 b 202.22 c 441.75 c 1326.72
1962 403.52 a 226.15 b 253.00 2.07 a 0.00 b 0.00 a 0.00 a 0.00 c 0.00 b 0.00 a 67.50 d 232.50 d 1184.74
1963 492.12 c 108.23 b 132.00 39.50 0.00 a 0.00 a 0.00 d 0.00 a 0.00 c 0.53 b 95.00 g 337.38 a 1109.77
1964 470.50 352.83 b 246.97 a 64.00 28.33 b 0.00 b 0.00 b 0.00 d 0.00 e 0.00 d 214.20 e 359.37 d 1736.20
1965 262.00 f 251.42 d 176.59 c 133.39 b 7.00 f 0.00 c 0.00 c 0.00 f 1.73 d 0.00 c 84.60 e 366.04 e 1013.77
1966 475.16 b 375.57 e 122.28 d 8.50 0.00 f 0.00 e 0.00 f 0.00 d 0.00 f 14.35 d 89.00 f 249.00 f 995.85
1967 363.65 e 202.09 e 75.12 e 88.27 d 7.15 e 0.00 d 0.00 h 0.00 d 0.00 d 0.00 e 67.50 f 392.50 f 736.28
1968 374.98 e 120.83 e 81.08 e 38.08 d 0.00 e 0.00 g 0.00 e 0.00 g 0.00 i 0.00 d 76.50 g 389.00 g 614.97
1969 288.96 c 313.04 c 154.00 g 0.00 f 3.00 h 0.00 0.00 i 0.00 0.00 d 1.00 j 29.00 j 192.50 i 602.00
1970 410.75 c 159.38 b 130.20 a 67.76 a 0.00 c 0.00 c 0.00 c 0.00 a 0.00 20.00 139.00 442.50 1369.59
1971 388.00 228.00 153.50 38.50 31.50 0.00 b 0.00 0.00 0.00 100.00 193.00 488.00 1620.50
1972 459.50 189.54 a 38.00 31.00 0.00 a 0.00 a 0.00 0.00 a 0.00 f 26.00 i 201.00 f 356.00 j 718.04
1973 420.50 f 289.13 e 248.57 d 24.00 g 6.00 f 0.00 d 0.00 g 0.00 d 0.00 h 2.00 l 140.00 g 192.50 k 537.70
1974 515.08 e 245.00 f 90.02 e 13.20 e 0.00 f 0.00 0.00 0.00 a 0.00 b 13.00 147.50 454.15 a 1232.95
1975 425.00 322.50 197.00 107.00 12.00 0.00 0.00 0.00 0.00 18.50 41.00 n 291.50 1373.50
1976 334.50 183.50 168.50 62.00 0.00 0.00 0.00 0.00 0.00 9.50 124.50 373.00 1255.50
1977 426.00 162.00 220.50 36.00 6.00 0.00 0.00 x 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 850.50
Period of Record Statistics
MEAN 396.62 235.98 144.91 44.45 5.67 0.00 0.00 0.00 0.12 13.59 136.86 358.87 1317.36
S.D. 85.30 82.04 69.22 37.24 10.50 0.00 0.00 0.00 0.45 24.50 49.09 85.97 285.02
SKEW -0.37 0.20 0.10 0.87 1.74 0.00 0.00 0.00 3.47 2.94 0.28 -0.34 0.05
MAX 515.08 375.57 253.00 133.39 31.50 0.00 0.00 0.00 1.73 100.00 214.20 488.00 1736.20
MIN 237.00 108.23 37.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 67.50 196.50 932.00
NO YRS 18 19 19 18 15 18 15 17 15 16 11 13 8