YOUNGTOWN, ARIZONA

Monthly Total Heating Degree Days

(029634)

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
1964 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 1.50 280.34 a 389.00 670.84
1965 328.00 301.00 242.00 109.50 13.50 0.00 0.00 0.00 2.00 8.00 119.00 356.50 a 1479.50
1966 493.50 385.50 145.50 17.00 0.00 0.00 0.00 0.00 0.00 6.50 129.00 384.50 1561.50
1967 421.50 214.00 117.00 112.50 12.00 0.00 0.00 z 0.00 0.00 3.00 69.00 508.00 1457.00
1968 371.00 134.50 176.50 37.00 0.00 0.00 0.00 0.00 0.00 3.00 190.00 516.50 1428.50
1969 310.50 326.00 275.00 16.00 12.00 0.00 0.00 0.00 0.00 42.00 159.00 378.00 1518.50
1970 466.50 186.00 211.50 86.50 1.50 0.00 0.00 0.00 0.00 45.50 183.50 436.00 1617.00
1971 433.00 286.50 135.50 43.50 3.00 0.00 0.00 0.00 0.00 59.13 d 199.50 466.03 a 1626.16
1972 453.50 204.55 a 29.50 14.50 0.00 0.00 0.00 0.00 0.00 45.00 275.00 464.50 1486.55
1973 479.00 254.50 315.00 60.50 1.00 0.00 0.00 0.00 0.00 9.00 223.00 359.08 a 1701.08
1974 399.50 282.50 94.50 16.50 0.50 0.00 0.00 0.00 0.00 25.00 164.00 476.00 1458.50
1975 410.50 311.50 193.50 126.50 6.50 0.00 0.00 0.00 0.00 29.50 180.00 356.50 1614.50
1976 349.00 163.50 163.00 56.50 0.00 0.00 0.00 0.00 0.00 27.50 155.50 383.00 1298.00
1977 408.50 176.30 a 226.50 43.50 2.00 0.00 0.00 0.00 0.00 2.00 103.50 285.00 1247.30
1978 373.00 258.50 107.00 41.00 1.50 0.00 d 0.00 0.00 0.00 1.00 185.00 482.50 1449.50
1979 509.50 301.50 161.00 42.00 6.50 0.00 0.00 0.00 0.00 15.00 203.00 320.00 1558.50
1980 288.00 173.00 175.50 58.00 1.00 0.00 0.00 0.00 0.00 24.00 148.00 208.00 1075.50
1981 252.50 183.00 134.50 14.50 0.00 0.00 0.00 0.00 0.00 17.00 99.50 304.00 1005.00
1982 404.00 187.00 171.50 22.00 0.00 0.00 0.00 0.00 0.00 10.00 177.00 419.00 1390.50
1983 358.00 262.50 174.00 91.00 4.00 0.00 0.00 0.00 0.00 0.00 186.00 338.50 1414.00
1984 303.00 238.50 63.00 45.00 0.00 0.00 0.00 0.00 0.00 25.50 194.50 393.50 1263.00
1985 394.50 292.50 151.00 4.50 0.00 0.00 0.00 0.00 0.00 0.50 208.50 364.50 1416.00
1986 201.50 213.00 89.00 8.00 3.50 0.00 0.00 0.00 3.00 9.50 110.50 348.50 986.50
1987 413.50 225.50 161.50 7.50 0.00 0.00 0.00 0.00 0.00 0.00 168.50 464.00 1440.50
1988 388.00 173.00 108.50 39.50 6.50 0.00 0.00 0.00 0.00 0.00 183.50 372.50 1271.50
1989 372.00 185.50 47.00 2.00 0.00 0.00 0.00 0.00 0.00 19.00 62.00 362.00 1049.50
1990 344.50 290.50 101.50 2.50 0.00 0.00 0.00 0.00 0.00 0.00 108.50 419.00 1266.50
1991 351.50 74.00 223.00 15.50 0.50 0.00 0.00 0.00 0.00 38.50 151.00 287.00 1141.00
1992 333.00 142.50 98.50 6.50 0.00 0.00 0.00 0.00 0.00 0.00 208.50 411.00 1200.00
1993 265.50 223.00 82.00 3.50 0.00 0.00 0.00 0.00 0.00 6.50 178.50 338.50 1097.50
1994 341.00 243.00 49.50 16.50 0.00 0.00 0.00 0.00 0.00 12.00 216.00 309.00 1187.00
1995 332.00 80.00 77.50 55.00 8.00 0.00 0.00 0.00 0.00 0.00 20.00 273.50 846.00
1996 295.00 121.00 65.50 0.00 0.00 0.00 0.00 0.00 0.00 60.00 67.50 284.50 893.50
1997 294.00 216.00 41.00 38.00 0.00 0.00 0.00 0.00 0.00 14.50 107.50 391.00 1102.00
1998 292.00 309.56 a 134.50 97.50 2.00 0.00 z 0.00 0.00 0.00 3.50 104.50 322.00 1265.56
1999 275.00 156.50 65.00 86.00 4.00 0.00 0.00 b 0.00 0.00 0.00 63.00 306.00 955.50
2000 221.50 118.00 94.00 8.00 0.00 0.00 0.00 0.00 0.00 19.38 c 293.28 a 295.00 1049.15
2001 347.50 244.50 99.50 51.11 c 0.00 0.00 0.00 0.00 0.00 0.00 94.00 418.50 1255.11
2002 346.00 170.50 121.00 1.50 0.00 0.00 0.00 0.00 0.00 8.00 55.50 387.50 1090.00
2003 162.50 214.00 114.00 33.50 0.00 0.00 0.00 0.00 0.00 0.00 163.50 337.00 1024.50
2004 104.00 v 290.50 50.00 10.50 0.00 0.00 0.00 0.00 0.00 23.50 195.50 338.00 908.00
2005 281.00 189.00 105.00 4.00 0.00 0.00 0.00 0.00 0.00 0.00 79.00 322.50 980.50
2006 285.00 168.50 164.50 0.00 z 0.00 0.00 0.00 0.00 0.00 0.00 84.50 400.50 1103.00
2007 398.00 184.50 68.00 12.50 0.00 0.00 0.00 0.00 0.00 0.00 48.50 442.00 1153.50
2008 386.00 263.50 74.00 1.00 3.50 0.00 0.00 0.00 0.00 6.00 64.50 354.00 1152.50
2009 248.50 196.00 53.50 26.00 0.00 0.00 0.00 0.00 0.00 23.00 89.50 404.50 1041.00
2010 292.00 199.50 134.00 27.00 0.00 0.00 0.00 0.00 0.00 0.50 194.50 234.00 1081.50
2011 363.22 a 315.00 57.00 20.50 0.00 a 0.00 0.00 0.00 a 0.00 a 0.53 b 124.50 427.50 1308.25
2012 259.50 196.79 a 88.50 10.71 b 0.00 b 0.00 0.00 0.00 0.00 b 13.95 a 53.00 347.00 969.45
2013 386.98 a 263.00 27.79 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.00 z 677.78
Period of Record Statistics
MEAN 347.56 220.19 123.62 34.94 1.94 0.00 0.00 0.00 0.10 13.43 145.33 371.12 1253.44
S.D. 75.86 66.54 64.95 33.38 3.46 0.00 0.00 0.00 0.52 16.15 64.73 68.24 227.06
SKEW -0.07 0.05 0.81 1.14 2.04 0.00 0.00 0.00 4.88 1.34 0.17 0.03 0.19
MAX 509.50 385.50 315.00 126.50 13.50 0.00 0.00 0.00 3.00 60.00 293.28 516.50 1701.08
MIN 162.50 74.00 27.79 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20.00 208.00 846.00
NO YRS 48 49 49 47 48 47 47 48 48 49 49 49 44