GRAND CANYON NP 2, ARIZONA

Monthly Total Heating Degree Days

(023596)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201203
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
1976 0.00 z 0.00 z 0.00 z 0.00 z 385.50 168.00 15.50 31.50 210.50 568.50 767.00 1013.00 3159.50
1977 1132.00 838.00 935.00 579.00 507.00 78.50 8.00 22.00 161.50 428.32 a 761.00 926.00 6376.32
1978 1041.00 922.50 745.00 629.00 435.55 a 96.00 17.50 49.00 203.50 397.00 832.50 1163.00 6531.55
1979 1280.50 1002.30 a 930.00 641.00 401.50 133.50 19.63 a 96.00 0.00 z 405.50 917.50 958.00 6785.43
1980 981.00 832.00 932.00 618.50 530.00 159.31 a 15.50 60.00 151.50 529.00 783.33 c 822.50 6414.64
1981 919.50 843.50 855.00 536.50 389.00 80.69 a 7.50 46.00 179.50 586.00 720.00 a 907.50 6070.69
1982 1093.00 914.00 874.50 624.50 433.00 187.00 45.00 36.50 190.50 612.50 857.50 1058.50 6926.50
1983 997.50 867.00 848.00 768.00 445.50 171.50 18.50 57.50 115.50 508.50 826.00 942.50 6566.00
1984 1048.50 0.00 z 852.00 667.00 217.00 145.50 34.50 63.50 157.50 728.50 870.50 1107.00 5891.50
1985 1175.00 1076.50 937.50 577.50 377.00 105.50 25.50 28.50 332.50 541.50 952.00 1012.50 7141.50
1986 881.50 854.50 772.00 648.50 397.00 105.50 53.50 22.00 325.00 631.00 827.00 1072.00 6589.50
1987 1162.50 936.00 1022.00 571.50 437.00 117.00 62.00 89.50 234.00 427.00 866.50 1209.50 7134.50
1988 1189.50 906.00 918.50 670.50 450.00 107.50 6.00 58.50 265.00 386.00 878.00 1146.00 6981.50
1989 1238.00 976.50 754.00 0.00 z 349.00 129.50 11.50 72.00 195.50 829.25 a 0.00 z 1052.00 5607.25
1990 1140.50 988.00 797.00 554.00 412.50 88.00 24.50 74.00 141.50 483.50 812.00 1251.50 6767.00
1991 1118.00 764.50 962.50 689.00 467.50 188.00 13.00 16.00 188.00 427.50 828.50 1028.00 6690.50
1992 1142.87 a 851.50 836.00 501.00 343.50 179.50 55.00 73.00 206.00 445.00 963.50 1195.50 6792.37
1993 1067.00 915.00 807.50 605.00 363.00 186.50 32.50 89.50 261.00 584.00 940.00 1122.50 6973.50
1994 1043.50 1037.50 763.00 637.50 265.00 i 54.50 0.50 3.50 127.00 603.50 958.50 994.50 6223.50
1995 1105.50 737.00 809.00 701.00 543.50 223.00 38.00 8.00 151.50 475.50 648.50 976.50 6417.00
1996 1049.00 833.50 793.50 577.50 263.00 47.50 1.00 14.00 233.50 553.50 779.00 0.00 z 5145.00
1997 1066.00 880.00 0.00 z 0.00 z 0.00 z 130.50 16.50 5.50 103.50 0.00 z 0.00 z 0.00 z 2202.00
1998 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 523.00 824.50 1083.00 2430.50
1999 967.50 804.00 722.50 724.66 a 392.50 147.00 36.17 a 44.43 a 202.00 424.50 618.50 1015.50 6099.26
2000 940.50 794.00 815.50 454.50 196.00 41.00 15.50 45.50 110.00 518.22 a 960.00 902.00 5792.72
2001 1084.00 882.00 788.50 592.50 190.00 61.50 17.00 18.00 62.50 366.50 725.00 1074.50 5862.00
2002 1012.50 822.00 831.50 455.50 347.00 36.50 0.00 7.00 150.00 510.50 709.50 1067.50 5949.50
2003 778.00 848.00 811.00 665.00 283.00 60.50 0.00 6.00 75.50 281.50 798.00 996.50 5603.00
2004 987.50 1017.50 592.50 572.00 298.00 47.00 21.00 45.00 190.00 551.50 834.50 934.50 6091.00
2005 914.00 799.50 780.50 565.00 297.50 119.50 1.00 18.00 152.00 403.00 643.50 949.00 5642.50
2006 954.00 813.00 914.50 e 491.50 208.00 25.50 5.50 18.00 200.50 501.50 698.50 996.50 5827.00
2007 1071.50 800.00 683.50 485.00 255.00 57.00 0.00 3.00 115.00 425.00 587.00 1083.50 5565.50
2008 1166.50 953.00 740.50 556.00 455.50 78.00 0.00 2.50 134.50 434.50 697.78 c 1099.97 b 6318.74
2009 940.50 862.17 d 770.50 625.00 189.00 f 0.00 z 1.00 30.50 g 97.00 217.50 u 386.00 n 1046.00 f 3296.17
2010 1070.07 d 987.30 e 862.26 d 699.81 d 496.57 d 89.00 f 0.50 f 23.00 m 38.00 m 271.00 l 568.50 l 756.00 f 4116.02
2011 1093.30 c 797.00 f 797.00 288.00 p 46.50 z 0.00 z 0.00 z 0.00 z 127.50 f 456.14 c 801.00 1087.00 4234.45
2012 887.00 923.70 b 756.00 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 2566.70
Period of Record Statistics
MEAN 1049.68 887.33 823.83 602.68 373.10 111.12 18.74 38.23 175.72 501.42 802.71 1039.00 6364.97
S.D. 109.11 83.19 87.40 77.98 98.87 53.46 17.38 28.47 64.28 108.11 102.83 97.21 493.86
SKEW -0.21 0.43 -0.05 -0.09 -0.30 0.23 0.92 0.45 0.58 0.83 -0.23 0.10 -0.06
MAX 1280.50 1076.50 1022.00 768.00 543.50 223.00 62.00 96.00 332.50 829.25 963.50 1251.50 7141.50
MIN 778.00 737.00 592.50 454.50 190.00 25.50 0.00 2.50 62.50 281.50 587.00 822.50 5565.50
NO YRS 35 33 34 31 31 32 33 32 32 33 32 32 25