SKULL VALLEY, ARIZONA

Monthly Total Heating Degree Days

(027965)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 198010
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
1972 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.00 o 242.00 571.50 775.00 1588.50
1973 793.50 593.19 a 711.00 455.36 b 122.00 23.50 0.00 a 1.50 35.56 c 189.00 537.50 641.18 a 4103.28
1974 728.00 604.15 b 472.23 a 340.34 a 115.22 a 0.50 0.00 0.00 b 3.10 a 180.32 a 453.89 c 812.09 c 3709.85
1975 717.13 a 631.50 662.37 a 563.00 199.43 a 22.50 b 0.00 b 0.00 0.00 a 213.50 524.44 c 655.81 b 4189.69
1976 646.35 a 545.00 599.00 430.00 110.10 b 26.38 a 0.00 3.00 31.50 209.25 a 383.28 a 646.57 c 3630.43
1977 709.50 481.19 a 674.00 290.50 275.00 1.00 0.00 0.00 33.50 100.50 361.50 535.50 3462.19
1978 654.74 b 560.00 412.00 396.00 180.50 1.50 0.00 a 0.00 29.50 110.00 501.00 0.00 z 2845.24
1979 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.00 h 0.00 b 0.00 0.00 a 120.56 d 567.78 c 575.64 b 1263.97
1980 671.50 516.30 a 629.09 b 284.00 g 279.55 c 43.00 0.00 0.00 4.50 210.50 0.00 z 0.00 z 2354.44
Period of Record Statistics
MEAN 702.96 561.62 594.24 412.53 183.12 16.91 0.00 0.56 17.21 175.07 487.61 663.11 3819.09
S.D. 50.97 52.43 111.03 95.03 72.68 16.36 0.00 1.12 16.52 51.68 80.55 99.55 313.45
SKEW 0.59 -0.21 -0.71 0.33 0.35 0.29 0.00 1.56 0.01 -0.39 -0.55 0.35 0.18
MAX 793.50 631.50 711.00 563.00 279.55 43.00 0.00 3.00 35.56 242.00 571.50 812.09 4189.69
MIN 646.35 481.19 412.00 290.50 110.10 0.50 0.00 0.00 0.00 100.50 361.50 535.50 3462.19
NO YRS 7 7 7 6 7 7 8 8 8 9 8 7 5