ALAMO DAM, ARIZONA

Monthly Total Heating Degree Days

(020100)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1975 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 j 0.00 0.00 a 27.00 224.50 420.00 671.50
1976 435.00 238.50 206.50 86.00 0.00 0.00 0.00 0.00 0.00 18.00 156.50 481.00 1621.50
1977 499.00 255.63 a 298.12 a 58.93 b 14.97 b 0.00 0.00 0.00 0.00 0.00 140.00 270.45 b 1537.09
1978 433.00 284.00 132.50 63.21 b 8.50 0.00 0.00 0.00 0.00 7.50 233.50 577.00 1739.21
1979 618.50 389.00 243.00 68.00 13.00 0.00 0.00 0.00 0.00 18.00 280.50 382.50 2012.50
1980 342.00 211.00 229.50 80.00 17.57 a 0.00 0.00 a 0.00 0.00 27.00 156.50 263.00 1326.57
1981 287.50 219.00 170.00 17.50 0.00 0.00 0.00 0.00 0.00 23.00 104.00 346.17 a 1167.17
1982 475.00 233.00 202.50 45.00 1.00 0.00 0.00 0.00 0.00 16.50 210.50 464.00 1647.50
1983 444.00 284.50 204.50 109.00 6.50 0.00 0.00 0.00 0.00 0.00 197.50 377.50 1623.50
1984 396.50 307.50 96.50 65.50 0.00 0.00 0.00 i 0.00 0.00 35.50 215.00 470.50 1587.00
1985 481.00 397.50 208.50 16.50 0.00 0.00 0.00 0.00 0.00 5.00 257.00 446.50 1812.00
1986 313.50 293.00 106.00 46.00 5.50 0.00 0.00 0.00 7.00 15.50 161.00 469.50 1417.00
1987 538.00 280.50 238.00 20.50 0.00 0.00 0.00 0.00 0.00 2.50 230.50 543.50 1853.50
1988 503.50 269.00 170.50 68.00 17.00 0.00 0.00 0.00 0.00 0.00 225.00 470.00 1723.00
1989 522.00 317.00 78.00 8.50 0.00 0.00 0.00 0.00 0.00 22.00 126.50 468.50 1542.50
1990 498.00 416.00 156.00 10.50 0.00 0.00 0.00 0.00 0.00 3.00 164.00 591.00 1838.50
1991 507.00 146.50 290.00 47.50 10.00 0.00 0.00 0.00 0.00 38.00 211.00 435.00 1685.00
1992 486.50 231.00 160.50 14.00 0.00 0.00 0.00 0.00 0.00 0.00 263.50 560.00 1715.50
1993 440.50 315.50 144.50 13.50 0.00 0.00 0.00 0.00 0.00 2.00 261.00 459.50 1636.50
1994 422.00 356.50 76.50 38.00 0.00 0.00 0.00 0.00 0.00 12.50 342.00 439.50 1687.00
1995 414.50 143.00 166.00 73.50 20.00 0.00 0.00 0.00 0.00 6.00 62.00 382.50 1267.50
1996 400.00 180.00 104.50 0.00 0.00 0.00 0.00 0.00 0.00 74.00 121.50 382.00 1262.00
1997 380.00 258.50 73.50 63.00 0.00 0.00 0.00 0.00 0.00 32.00 156.50 503.00 1466.50
1998 395.50 369.50 196.00 132.50 3.50 0.00 z 0.00 0.00 0.00 13.50 159.50 426.50 1696.50
1999 359.50 256.00 118.00 140.00 18.00 1.50 0.00 0.00 0.00 0.00 100.50 382.50 1376.00
2000 326.50 223.00 156.00 10.00 0.00 0.00 0.00 0.00 0.00 42.50 361.50 407.00 1526.50
2001 482.50 373.50 144.00 90.00 0.00 0.00 0.00 0.00 0.00 0.00 126.00 529.00 1745.00
2002 469.50 323.50 195.50 14.50 0.50 0.00 0.00 0.00 0.00 22.00 93.50 445.00 1564.00
2003 265.50 269.50 165.50 68.50 8.00 0.00 0.00 0.00 0.00 0.00 251.00 450.50 1478.50
2004 447.50 374.00 65.00 15.50 0.00 0.00 0.00 0.00 0.00 51.50 273.00 447.50 1674.00
2005 402.00 268.00 192.00 41.00 2.50 0.00 0.00 0.00 0.00 7.00 158.50 470.50 1541.50
2006 418.50 261.00 239.00 25.50 0.00 0.00 0.00 0.00 0.00 7.50 103.00 315.00 l 1054.50
2007 550.00 244.50 108.00 26.50 1.50 0.00 0.00 0.00 0.00 e 1.50 88.50 486.00 1506.50
2008 342.50 i 351.00 122.50 9.50 9.00 0.00 0.00 0.00 f 0.00 12.00 92.50 465.00 1061.50
2009 382.00 239.50 i 140.50 59.00 0.00 0.00 o 0.00 0.00 0.00 33.50 164.50 468.00 1247.50
2010 404.50 291.50 222.00 84.00 10.50 0.00 0.00 0.00 0.00 18.00 261.00 371.00 1662.50
2011 516.48 c 390.88 c 136.40 a 46.03 a 10.85 a 0.00 d 0.00 0.00 b 0.00 c 14.95 c 225.54 b 561.74 b 1902.87
2012 415.40 a 288.96 a 88.50 u 32.40 e 0.00 c 0.00 a 0.00 a 0.00 0.00 a 3.88 c 104.44 c 401.40 b 1246.48
2013 537.00 356.50 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 893.50
Period of Record Statistics
MEAN 438.09 288.31 165.44 48.85 4.82 0.04 0.00 0.00 0.18 16.13 185.87 446.33 1598.67
S.D. 77.19 68.77 59.35 35.15 6.44 0.25 0.00 0.00 1.14 16.69 73.15 73.93 196.20
SKEW -0.14 -0.06 0.26 0.75 1.03 5.66 0.00 0.00 5.92 1.42 0.38 -0.31 -0.21
MAX 618.50 416.00 298.12 140.00 20.00 1.50 0.00 0.00 7.00 74.00 361.50 591.00 2012.50
MIN 265.50 143.00 65.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 62.00 263.00 1167.17
NO YRS 37 37 36 37 37 35 36 37 38 38 38 37 31