FLAGSTAFF 4 SW, ARIZONA

Monthly Total Heating Degree Days

(023009)

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
1984 0.00 z 0.00 z 0.00 z 0.00 z 440.50 347.59 a 93.50 163.00 306.72 a 831.00 1037.00 1218.82 a 4438.13
1985 1276.00 1205.00 1029.50 665.50 540.43 a 259.50 96.00 145.00 450.50 622.00 1059.00 1159.50 8507.93
1986 994.00 950.50 891.00 711.00 552.00 234.00 155.00 98.50 465.00 a 796.00 944.00 1191.50 7982.50
1987 1353.50 1055.00 1168.50 671.38 a 566.50 284.00 205.50 181.50 378.50 0.00 z 950.50 1268.00 8082.88
1988 1290.50 1039.00 944.50 746.50 595.00 260.00 82.50 151.50 441.50 524.50 953.00 1285.00 8313.50
1989 1410.50 1051.50 835.00 589.50 504.50 297.00 75.00 173.00 340.50 664.00 941.00 1194.50 8076.00
1990 1335.00 1136.00 962.00 657.00 594.00 222.50 99.50 241.50 285.00 660.00 959.50 1378.50 8530.50
1991 1196.50 889.00 1121.00 807.00 638.50 418.50 121.00 133.50 298.50 605.50 959.00 1216.00 8404.00
1992 1378.50 995.50 957.00 638.00 510.50 356.50 184.50 161.00 339.00 606.50 1082.50 1389.50 8599.00
1993 1147.00 1037.00 927.00 711.50 533.00 335.50 178.00 136.50 344.50 640.50 1012.00 1231.50 8234.00
1994 1115.00 1134.00 862.50 709.00 544.00 175.50 95.00 39.00 261.00 709.50 1050.50 1086.50 7781.50
1995 1210.50 831.50 878.00 790.00 622.00 373.00 127.00 50.00 260.50 623.00 748.50 1110.50 7624.50
1996 1108.50 841.50 930.50 709.00 437.00 219.00 25.00 88.50 351.00 687.00 886.50 1015.50 7299.00
1997 1165.00 1052.50 886.60 a 794.50 423.00 345.00 136.50 92.50 202.50 651.00 859.14 a 1283.00 7891.24
1998 1068.50 1106.00 1006.00 875.50 0.00 z 385.00 51.00 78.50 282.50 689.50 896.50 1118.00 7557.00
1999 1031.27 a 872.50 845.78 a 863.28 a 573.50 293.00 102.00 249.60 b 418.50 686.28 b 860.69 a 1275.50 8071.89
2000 1160.00 969.50 1008.53 a 669.44 c 469.50 293.04 b 66.50 79.50 237.41 a 601.00 1114.00 993.00 7661.43
2001 1230.59 c 1043.50 894.50 682.24 a 394.00 194.50 83.00 87.50 236.50 502.50 842.00 1254.00 7444.83
2002 1114.00 971.50 978.50 604.50 530.50 193.50 23.00 109.50 277.50 666.50 882.00 1207.50 7558.50
2003 929.00 916.50 942.00 791.00 446.00 269.50 22.00 58.50 220.50 465.00 922.50 1108.00 7090.50
2004 1152.00 1114.50 762.00 684.00 490.00 259.00 112.50 158.00 329.50 672.50 932.50 1100.50 7767.00
2005 1110.32 a 938.50 909.00 693.00 433.00 296.50 60.50 107.50 280.00 569.50 815.00 1066.00 7278.82
2006 1138.45 b 941.00 1027.00 688.00 408.50 133.50 28.50 104.00 357.00 651.00 845.00 1138.06 e 7460.01
2007 1320.50 983.00 806.50 695.50 466.00 165.00 f 20.00 f 47.50 257.50 597.50 779.50 1233.50 7187.00
2008 1339.20 a 1065.50 905.50 708.50 588.00 207.50 46.00 62.00 298.50 613.50 787.00 1133.00 7754.20
2009 1112.50 1029.00 873.00 741.50 0.00 z 322.50 35.50 118.00 233.00 725.00 851.00 1353.50 7394.50
2010 1231.00 1062.50 1039.00 762.00 602.00 246.50 46.50 85.50 255.00 554.50 953.00 975.00 7812.50
2011 1210.00 1063.00 837.50 700.34 a 598.00 271.00 55.28 a 16.00 239.44 c 586.42 a 873.00 1243.00 7692.99
2012 1058.00 994.00 952.70 c 646.00 469.50 193.50 41.50 42.50 192.50 f 951.00 843.50 1229.50 7421.70
2013 1323.00 1085.50 797.00 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 3205.50
Period of Record Statistics
MEAN 1189.96 1012.90 930.26 714.45 517.39 274.50 87.42 112.38 308.84 648.29 918.60 1188.15 7862.45
S.D. 121.36 91.10 93.26 69.46 71.61 69.41 50.96 57.49 72.04 98.59 93.08 107.18 425.52
SKEW -0.03 -0.20 0.56 0.59 -0.07 0.10 0.68 0.61 0.70 0.98 0.29 -0.12 0.16
MAX 1410.50 1205.00 1168.50 875.50 638.50 418.50 205.50 249.60 465.00 951.00 1114.00 1389.50 8599.00
MIN 929.00 831.50 762.00 589.50 394.00 133.50 22.00 16.00 202.50 465.00 748.50 975.00 7090.50
NO YRS 29 29 29 28 27 28 28 29 28 28 29 29 23