FOUNTAIN HILLS, ARIZONA

Monthly Total Heating Degree Days

(023190)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1979 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 17.71 c 224.50 281.00 523.21
1980 306.00 187.50 210.00 66.50 17.00 0.00 0.00 0.00 0.00 0.00 z 132.00 141.00 1060.00
1981 219.00 169.50 141.50 18.50 0.00 0.00 0.00 0.00 h 0.00 g 6.50 67.50 255.00 877.50
1982 433.50 227.00 182.00 27.00 2.00 0.00 0.00 0.00 0.00 0.00 155.00 405.50 1432.00
1983 340.50 282.50 215.50 110.50 6.00 0.00 0.00 0.00 0.50 0.00 201.00 364.50 1521.00
1984 346.50 257.50 69.00 79.00 0.50 0.00 0.00 0.00 0.00 33.00 203.50 439.50 1428.50
1985 450.00 318.50 177.50 31.00 0.00 0.00 0.00 0.00 0.00 5.00 233.00 381.50 1596.50
1986 219.50 263.50 105.50 16.50 4.00 0.00 0.00 0.00 0.50 5.50 121.00 373.00 1109.00
1987 436.00 281.50 200.50 8.50 0.00 0.00 0.00 0.00 0.00 0.00 196.00 474.00 1596.50
1988 412.00 184.50 127.00 65.00 14.50 0.00 0.00 0.00 0.00 0.00 173.00 369.50 1345.50
1989 390.00 212.00 69.00 4.00 0.00 0.00 0.00 0.00 0.00 10.00 57.50 326.00 1068.50
1990 376.00 360.00 121.50 10.50 0.00 0.00 0.00 0.00 0.00 0.00 124.00 455.00 1447.00
1991 389.00 83.00 278.00 33.00 4.50 0.00 0.00 0.00 0.00 47.50 181.00 352.50 1368.50
1992 400.00 196.00 123.50 15.50 1.50 0.00 0.00 0.00 0.00 0.00 218.50 416.50 1371.50
1993 318.50 268.00 110.50 10.00 0.00 0.50 0.00 0.00 0.00 3.00 176.50 357.00 1244.00
1994 316.50 277.00 78.50 22.50 0.00 0.00 0.00 0.00 0.00 22.00 242.50 314.00 1273.00
1995 382.00 87.50 92.00 73.50 6.50 0.00 0.00 0.00 0.00 0.00 19.00 245.00 905.50
1996 302.00 153.00 98.00 0.00 0.00 0.00 0.00 0.00 0.00 66.50 86.00 298.50 1004.00
1997 364.50 214.50 52.00 42.00 0.00 0.00 0.00 0.00 0.00 38.00 128.00 448.50 1287.50
1998 326.50 387.00 225.00 149.50 7.00 0.00 z 0.00 0.00 0.00 3.50 100.50 378.00 1577.00
1999 275.50 g 225.00 129.50 146.00 17.00 1.00 0.00 a 0.00 0.00 1.55 a 68.00 364.25 a 952.30
2000 266.17 b 172.50 161.50 14.50 0.00 0.00 0.00 0.00 0.00 c 12.50 q 219.00 l 304.04 e 918.71
2001 400.33 b 294.50 152.50 84.83 a 0.00 0.00 0.00 0.00 0.00 c 0.00 92.50 411.55 b 1436.21
2002 338.00 193.00 137.00 4.00 3.00 0.00 0.00 0.00 0.00 12.00 72.50 412.00 1171.50
2003 180.50 255.00 163.00 51.50 0.00 0.00 0.00 0.00 0.00 0.00 156.50 328.00 1134.50
2004 314.00 335.50 79.50 19.00 0.00 0.00 0.00 0.00 0.00 29.00 207.50 367.50 1352.00
2005 313.00 226.50 175.00 22.00 0.00 0.00 0.00 0.00 0.00 0.50 60.50 306.00 1103.50
2006 0.00 z 0.00 z 0.00 z 17.31 d 0.00 d 0.00 g 0.00 i 0.00 0.00 0.00 0.00 z 0.00 z 17.31
2007 434.00 a 208.50 83.50 22.50 0.00 0.00 0.00 0.00 a 0.00 1.50 0.00 z 429.50 1179.50
2008 413.50 289.00 0.00 z 9.00 11.50 0.00 0.00 0.00 0.00 0.00 z 0.00 z 0.00 z 723.00
2009 262.50 225.50 83.00 48.33 c 0.00 0.00 0.00 0.00 0.00 39.00 67.00 424.50 1149.83
2010 306.42 e 239.50 204.00 49.00 9.50 0.00 0.00 0.00 0.00 2.50 192.50 210.00 1213.42
2011 339.85 d 357.00 81.78 b 34.00 4.65 a 0.00 d 0.00 e 0.00 0.00 a 5.54 c 160.34 a 423.67 d 1406.82
2012 265.10 b 225.50 134.50 20.17 a 0.00 0.00 0.00 a 0.00 0.00 d 0.52 a 44.00 324.47 a 1014.26
2013 531.50 318.50 87.46 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 18.50 z 937.46
Period of Record Statistics
MEAN 346.65 241.68 135.90 40.16 3.31 0.05 0.00 0.00 0.03 11.30 138.71 355.66 1279.22
S.D. 75.90 71.06 55.23 38.43 5.15 0.20 0.00 0.00 0.12 17.14 64.46 75.52 187.69
SKEW -0.01 -0.11 0.59 1.50 1.56 4.14 0.00 0.00 3.61 1.69 -0.10 -0.80 -0.13
MAX 531.50 387.00 278.00 149.50 17.00 1.00 0.00 0.00 0.50 66.50 242.50 474.00 1596.50
MIN 180.50 83.00 52.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 19.00 141.00 905.50
NO YRS 32 33 32 33 33 31 32 32 32 31 30 32 25