TUCSON 17 NW, ARIZONA

Monthly Total Heating Degree Days

(028795)

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
1982 0.00 z 0.00 z 0.00 z 0.00 z 3.10 a 0.00 0.00 0.00 0.00 25.00 167.07 a 397.00 592.17
1983 320.00 298.85 b 207.38 b 125.17 a 6.72 a 0.00 b 0.00 0.00 0.00 a 0.00 b 197.68 b 295.65 d 1451.44
1984 36.50 v 214.50 h 138.47 a 106.55 a 0.00 b 0.00 a 0.00 c 0.00 n 0.00 a 41.00 203.04 b 327.50 f 489.05
1985 357.50 g 312.85 b 108.50 c 21.00 0.00 0.00 0.00 0.00 0.00 a 12.18 c 226.00 365.05 b 1045.58
1986 175.00 240.50 101.02 b 21.00 9.50 0.00 0.00 0.00 1.00 19.08 e 142.00 371.50 1080.59
1987 404.00 280.00 227.00 17.50 0.50 0.00 0.00 0.00 0.00 0.00 165.00 441.00 1535.00
1988 411.27 a 183.50 150.50 86.50 25.32 a 0.00 0.00 0.00 0.00 0.00 205.50 370.00 1432.58
1989 450.00 191.00 74.00 7.00 5.50 0.00 0.00 0.00 0.00 23.50 91.00 350.00 1192.00
1990 419.50 364.00 163.00 28.00 5.50 0.00 a 0.00 0.00 0.00 0.00 125.50 405.50 1511.00
1991 405.50 135.00 304.50 46.00 0.00 1.00 0.00 0.00 0.00 52.00 209.00 341.50 1494.50
1992 419.50 234.00 194.00 31.50 0.00 0.00 0.00 0.00 0.00 0.00 259.00 442.50 1580.50
1993 323.00 306.00 149.50 21.50 0.00 0.00 0.00 0.00 0.00 0.00 z 178.00 j 386.00 1186.00
1994 341.50 321.50 135.00 60.50 1.00 0.00 0.00 0.00 0.00 32.50 189.50 j 0.00 z 892.00
1995 391.50 136.50 144.00 93.00 19.50 0.00 0.00 0.00 0.00 0.50 j 52.50 93.50 o 837.00
1996 267.50 147.90 d 82.50 i 8.50 l 0.00 0.00 0.00 0.00 0.00 37.00 t 41.50 l 330.50 745.90
1997 397.50 262.00 86.00 69.50 0.00 0.00 0.00 0.00 0.00 44.00 129.50 487.00 1475.50
1998 357.50 358.50 214.42 a 156.00 3.50 0.00 0.00 n 0.00 a 0.00 7.00 i 114.00 342.00 1545.92
1999 196.00 i 179.00 h 98.50 g 169.82 b 11.50 0.00 a 0.00 b 0.00 0.00 1.00 81.21 a 382.33 a 645.86
2000 270.22 a 186.27 c 183.50 26.00 0.00 z 0.00 b 0.00 0.00 0.00 57.87 a 366.11 c 317.23 a 1407.20
2001 467.14 b 344.00 178.00 95.00 0.00 a 0.00 a 0.00 0.00 a 0.00 0.00 122.59 a 460.35 a 1667.07
2002 364.00 236.00 183.50 3.50 0.50 0.00 0.00 0.00 0.00 27.00 92.00 423.00 1329.50
2003 194.50 268.50 195.00 76.50 0.50 0.00 0.00 0.00 0.00 4.00 196.00 344.00 1279.00
2004 362.50 406.50 101.00 54.00 0.00 0.00 0.00 0.00 0.00 39.00 271.50 383.00 1617.50
2005 319.00 272.50 197.22 b 37.50 0.00 0.00 z 0.00 0.00 0.00 4.50 0.00 z 307.50 1138.22
2006 307.00 189.50 219.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 427.50 1143.50
2007 507.37 a 250.50 142.27 c 35.50 2.50 0.00 0.00 0.00 0.00 6.00 73.97 a 477.00 1495.10
2008 410.50 350.50 0.00 z 37.80 e 15.00 0.00 0.00 d 0.00 0.00 25.50 107.50 405.50 1352.30
2009 298.50 254.00 85.85 e 85.50 0.00 i 0.00 f 0.00 f 0.00 e 0.00 i 30.50 f 0.00 z 0.00 z 723.85
2010 354.84 c 0.00 z 253.00 85.00 f 8.00 0.00 0.00 0.00 0.00 15.50 231.00 245.50 1107.84
2011 435.60 b 337.22 e 88.19 b 44.50 m 11.50 i 0.00 h 0.00 d 0.00 e 0.00 f 22.50 i 169.14 a 536.19 d 1566.33
2012 310.57 d 265.83 e 167.00 h 42.00 g 0.00 c 0.00 z 0.00 n 0.00 a 0.00 b 59.00 194.50 857.50 1687.41
2013 676.00 569.00 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 1245.00
Period of Record Statistics
MEAN 370.04 275.09 162.47 60.47 4.38 0.04 0.00 0.00 0.04 20.36 167.69 403.40 1438.66
S.D. 97.19 92.17 57.55 45.12 6.65 0.20 0.00 0.00 0.19 19.96 72.54 111.06 164.81
SKEW 0.71 0.95 0.37 0.89 1.76 4.80 0.00 0.00 5.00 0.58 0.66 2.55 -0.79
MAX 676.00 569.00 304.50 169.82 25.32 1.00 0.00 0.00 1.00 59.00 366.11 857.50 1667.07
MIN 175.00 135.00 74.00 3.50 0.00 0.00 0.00 0.00 0.00 0.00 52.50 245.50 1080.59
NO YRS 28 28 26 25 27 26 27 29 28 24 25 27 14