WILLOW BEACH, ARIZONA

Monthly Total Heating Degree Days

(029376)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 200709
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
1967 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 1.50 80.50 513.00 595.00
1968 422.00 123.00 66.00 29.00 0.00 0.00 0.00 0.00 0.00 0.00 a 111.50 510.00 1261.50
1969 319.50 327.70 a 187.50 8.04 b 1.50 0.00 0.00 0.00 c 0.00 8.50 118.97 a 316.95 b 1288.65
1970 405.87 d 153.00 110.10 b 49.50 0.00 0.00 a 0.00 0.00 b 0.00 c 27.38 a 103.89 c 431.42 a 1281.16
1971 442.50 232.00 151.00 16.55 a 5.17 a 0.00 0.00 0.00 a 0.00 78.57 b 242.00 546.00 1713.79
1972 532.50 240.00 39.02 b 44.44 c 0.00 0.00 0.00 0.00 0.00 42.00 273.00 560.00 1730.96
1973 556.00 309.50 259.00 36.00 0.00 0.00 0.00 0.00 0.00 1.50 205.00 405.50 1772.50
1974 542.50 311.63 a 100.50 12.00 0.00 0.00 0.00 0.00 0.00 b 15.00 150.00 508.00 1639.63
1975 486.50 307.00 191.50 79.50 4.65 a 0.00 0.00 c 0.00 0.00 29.00 232.50 423.50 1754.15
1976 419.57 b 197.50 162.00 49.50 0.00 0.00 0.00 0.00 0.00 15.00 0.00 z 0.00 z 843.57
1977 503.50 228.00 236.00 28.00 5.17 a 0.00 0.00 0.00 0.00 0.00 157.50 306.00 1464.17
1978 422.50 274.00 113.50 27.00 6.00 0.00 0.00 0.00 0.00 0.00 272.00 626.00 1741.00
1979 651.50 408.50 179.50 38.50 3.50 0.00 0.00 0.00 0.00 14.50 231.00 409.00 1936.00
1980 385.50 211.00 175.50 39.00 0.50 0.00 0.00 0.00 0.00 z 27.50 0.00 z 261.00 1100.00
1981 303.00 218.50 138.50 6.00 0.00 0.00 0.00 0.00 0.00 9.50 97.00 333.00 1105.50
1982 443.50 250.00 144.50 25.50 0.00 0.00 0.00 0.00 0.00 15.50 221.50 451.50 1552.00
1983 407.00 224.00 118.50 72.00 2.50 0.00 0.00 0.00 0.00 0.00 185.50 369.00 1378.50
1984 416.50 302.00 87.00 51.00 0.00 0.00 0.00 0.00 0.00 30.50 204.50 496.00 1587.50
1985 479.50 376.00 166.00 4.50 0.00 0.00 0.00 0.00 0.00 2.50 258.50 404.00 1691.00
1986 309.00 201.50 0.00 z 2.00 0.00 0.00 0.00 0.00 0.00 8.50 89.50 362.00 972.50
1987 465.00 203.00 142.60 a 3.00 0.00 0.00 0.00 0.00 0.00 0.00 152.50 527.50 1493.60
1988 487.00 230.50 107.50 37.50 7.00 0.00 0.00 0.00 0.00 0.00 176.00 371.50 1417.00
1989 457.00 282.00 59.00 2.00 0.00 i 0.00 0.00 0.00 0.00 22.50 73.50 341.50 1237.50
1990 421.00 317.00 83.00 0.00 0.00 0.00 0.00 0.00 0.00 2.50 131.50 546.00 1501.00
1991 446.50 128.50 244.50 16.00 2.00 0.00 0.00 0.00 0.00 34.00 172.00 393.50 1437.00
1992 442.00 191.50 108.50 5.50 0.00 0.00 0.00 0.00 0.00 2.00 209.50 496.50 1455.50
1993 450.00 289.50 94.00 11.50 0.00 0.00 0.00 0.00 0.00 0.00 231.00 405.50 1481.50
1994 354.00 333.00 36.00 12.00 0.00 0.00 0.00 0.00 0.00 10.50 298.00 361.50 1405.00
1995 386.00 100.00 139.50 37.00 2.50 1.50 0.00 0.00 0.00 2.50 27.00 291.50 987.50
1996 309.00 152.50 58.00 0.00 1.00 0.00 0.00 0.00 0.00 47.00 78.00 328.00 973.50
1997 327.50 195.50 63.50 35.50 0.00 0.00 0.00 0.00 0.00 9.50 102.50 424.00 1158.00
1998 325.00 284.50 136.00 69.00 3.00 0.00 0.00 0.00 0.00 2.00 129.00 396.00 1344.50
1999 299.50 198.00 40.50 85.50 10.50 0.50 0.00 0.00 0.00 1.50 81.00 336.00 1053.00
2000 0.00 z 162.00 90.00 1.50 0.00 0.00 0.00 0.00 0.00 18.50 259.50 301.50 833.00
2001 409.50 270.00 101.50 39.50 0.00 0.00 0.00 0.00 0.00 0.00 105.50 457.50 1383.50
2002 412.50 239.50 157.00 0.00 0.00 0.00 0.00 0.00 0.00 12.50 83.00 367.50 1272.00
2003 201.50 150.50 k 95.00 h 9.50 r 0.00 0.00 0.00 0.00 0.00 f 0.00 184.00 372.00 757.50
2004 309.50 g 296.50 45.50 8.00 g 0.00 c 0.00 0.00 e 0.00 g 0.00 34.50 f 194.00 391.50 927.50
2005 341.00 229.50 91.21 e 21.60 e 0.00 e 0.00 0.00 0.00 i 0.00 z 0.00 z 0.00 z 0.00 z 683.31
2006 0.00 z 111.50 m 121.50 k 0.00 z 0.00 z 0.00 z 0.00 i 0.00 g 0.00 j 4.00 73.00 h 0.00 z 4.00
2007 132.00 w 144.00 g 59.50 k 7.50 j 0.00 j 0.00 0.00 h 0.00 l 0.00 j 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 416.18 243.18 122.87 27.64 1.49 0.05 0.00 0.00 0.00 13.05 164.50 414.62 1442.02
S.D. 87.34 70.39 58.00 23.92 2.53 0.25 0.00 0.00 0.00 16.84 70.31 86.82 245.04
SKEW 0.12 0.10 0.52 0.74 1.85 5.26 0.00 0.00 0.00 1.94 0.08 0.45 -0.12
MAX 651.50 408.50 259.00 85.50 10.50 1.50 0.00 0.00 0.00 78.57 298.00 626.00 1936.00
MIN 201.50 100.00 36.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 27.00 261.00 973.50
NO YRS 36 37 36 36 37 39 38 36 35 38 36 37 30