GRAND CANYON HQ, ARIZONA

Monthly Total Heating Degree Days

(023591)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 195708
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
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 128.00 n 473.94 e 489.00 689.00 1651.94
1904 881.50 0.00 z 0.00 z 0.00 z 0.00 z 139.00 0.00 0.00 52.00 441.50 717.00 1155.27 a 3386.27
1905 1048.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 161.50 552.00 786.00 1400.00 3947.50
1906 1350.50 0.00 z 0.00 z 832.50 548.00 202.50 68.50 143.00 0.00 z 167.50 530.00 714.00 4556.50
1907 1099.50 560.00 0.00 z 417.50 411.50 248.50 0.00 z 67.50 202.00 481.50 795.50 975.00 5258.50
1908 0.00 z 0.00 z 807.00 581.00 511.00 0.00 z 0.00 z 0.00 z 253.00 794.00 838.50 1156.00 4940.50
1909 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 83.00 17.50 0.00 z 230.00 582.50 0.00 z 0.00 z 913.00
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 112.00 0.00 z 0.00 z 0.00 z 112.00
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 72.00 205.00 614.50 1067.50 1324.50 3283.50
1912 1181.50 902.00 949.00 747.00 551.00 185.50 110.50 0.00 z 0.00 z 716.50 934.14 a 1306.50 7583.64
1913 1394.50 940.50 963.50 367.00 303.00 137.00 23.00 12.50 192.00 573.50 a 800.00 c 1139.50 6846.00
1914 990.00 964.00 729.00 570.00 198.50 174.60 e 33.58 a 27.50 132.22 c 463.50 708.50 1230.00 6221.41
1915 1236.50 1000.00 877.41 c 593.00 540.95 a 158.00 15.00 34.10 a 256.00 522.00 798.00 1071.50 7102.46
1916 1180.00 874.50 721.50 576.50 384.00 121.50 70.27 a 111.00 238.00 559.50 807.86 b 1200.50 6845.12
1917 1315.50 1048.00 1024.00 683.50 534.50 110.00 9.50 49.00 154.00 410.50 669.50 821.50 a 6829.50
1918 1144.00 896.50 786.00 624.00 454.00 23.50 36.50 53.00 112.50 464.43 d 864.00 1136.67 a 6595.09
1919 1136.50 1050.00 938.50 562.00 287.00 92.50 3.32 c 9.50 82.50 670.00 783.00 972.00 6586.82
1920 694.00 j 893.00 591.00 j 748.00 320.50 59.50 17.50 50.24 b 211.67 c 0.00 z 649.50 g 1179.66 c 3480.07
1921 1121.50 920.00 761.57 a 722.31 d 487.50 148.50 30.50 29.00 107.00 376.00 719.50 920.00 6343.37
1922 1258.50 993.00 940.00 716.50 304.00 39.00 5.00 13.00 h 78.50 422.00 870.00 931.00 6557.50
1923 916.50 970.50 951.50 644.50 285.00 72.50 r 3.50 32.50 244.50 549.50 764.50 1063.00 6425.50
1924 1121.00 773.50 1001.50 553.00 217.00 34.50 26.00 21.50 86.50 506.00 728.50 1163.50 6232.50
1925 1214.00 827.00 747.00 511.00 192.50 121.00 16.00 46.00 214.00 548.00 824.00 993.00 6253.50
1926 1127.50 800.50 790.00 572.50 324.50 6.50 8.35 e 2.50 85.50 345.00 670.00 761.50 i 4732.85
1927 917.00 831.00 840.50 508.50 219.00 95.50 9.00 39.00 157.00 441.50 660.50 1171.80 a 5890.30
1928 977.00 921.50 719.50 545.50 303.00 28.50 0.00 15.00 50.00 422.50 795.50 1055.50 5833.50
1929 1102.00 1028.00 818.00 615.50 257.50 115.86 a 5.00 9.00 115.50 398.50 762.50 816.50 6043.86
1930 1231.00 740.50 847.00 410.00 493.50 80.50 22.00 17.50 153.00 515.50 816.00 1062.50 6389.00
1931 1049.50 848.50 771.00 464.00 253.50 33.00 0.00 22.50 103.50 406.00 904.50 1134.00 5990.00
1932 1246.50 920.00 792.00 510.50 327.00 123.50 0.00 7.50 64.50 416.50 621.00 1172.50 6201.50
1933 1128.50 1034.50 702.50 613.00 447.00 22.50 0.00 0.00 37.50 322.40 a 667.00 862.00 5836.90
1934 978.00 757.50 556.50 408.50 152.50 133.50 3.00 9.50 114.50 339.00 731.00 756.00 g 4183.50
1935 1041.00 868.50 908.00 436.50 g 434.50 13.50 3.00 11.00 95.00 438.00 825.50 1015.00 5653.00
1936 1033.50 1004.50 800.00 444.00 181.50 63.50 21.50 17.50 191.50 461.50 756.50 1035.50 6011.00
1937 1491.00 979.00 882.00 592.00 196.00 96.00 14.47 a 1.50 f 63.10 a 317.50 636.50 919.50 6187.07
1938 1007.50 946.50 928.00 521.00 314.59 d 49.00 9.30 a 10.85 a 48.00 452.00 887.50 963.00 6137.24
1939 1058.00 1164.50 765.50 439.00 218.50 58.50 2.50 1.00 157.00 505.00 713.50 855.50 5938.50
1940 1011.00 924.50 698.00 533.00 200.00 28.00 3.00 24.50 156.50 430.00 797.00 962.50 5768.00
1941 1065.50 798.00 799.50 748.50 317.00 146.00 7.00 23.50 206.00 583.00 738.00 1018.00 6450.00
1942 1017.00 993.50 872.50 558.50 341.50 47.50 2.50 12.00 66.00 452.50 643.00 882.00 5888.50
1943 981.50 812.50 707.50 407.50 236.00 106.00 4.00 2.58 a 79.50 429.00 725.50 1037.50 5529.08
1944 1112.00 991.00 886.00 678.50 368.50 164.00 2.50 4.00 58.50 356.50 878.00 962.00 6461.50
1945 1027.13 a 816.50 917.00 548.50 f 265.05 a 137.50 0.00 8.00 113.00 364.50 759.50 1097.50 5505.68
1946 1088.00 869.00 791.02 a 462.50 313.00 27.50 14.00 15.50 81.00 581.00 877.50 915.50 6035.52
1947 1130.50 756.00 724.50 544.00 208.00 111.00 19.00 40.00 f 35.50 403.00 922.00 1113.50 5967.00
1948 985.00 972.00 1014.00 493.50 257.00 65.50 2.00 14.50 105.00 429.00 866.50 1079.50 6283.50
1949 1423.50 1162.50 855.50 487.00 361.00 126.00 19.50 27.00 80.00 575.00 607.00 1139.00 6863.00
1950 805.00 g 810.17 e 773.00 448.50 356.50 74.50 12.00 35.50 180.00 240.50 641.00 800.32 a 4371.99
1951 1057.00 853.50 842.00 548.00 334.00 130.00 0.00 32.50 62.50 464.50 856.50 1108.00 6288.50
1952 1145.00 987.50 1045.50 567.50 244.38 a 51.50 14.00 29.00 93.00 278.50 923.50 1111.50 6490.88
1953 881.50 874.00 785.50 572.50 465.50 77.68 b 3.00 19.12 a 62.50 408.00 654.00 1046.00 5849.29
1954 989.50 708.50 880.00 389.50 188.00 115.18 b 5.00 2.98 e 93.33 c 355.00 675.00 1039.50 5441.49
1955 1213.50 1117.00 814.00 602.00 325.50 b 135.60 e 5.00 0.50 108.00 316.20 a 762.50 882.47 a 6282.27
1956 890.00 1016.50 734.50 576.50 240.50 10.00 10.00 15.50 42.00 418.00 846.50 1000.50 5800.50
1957 1081.79 b 730.50 758.50 598.00 472.00 58.45 a 4.00 0.00 v 0.00 z 0.00 z 0.00 z 0.00 z 3703.24
Period of Record Statistics
MEAN 1105.77 907.46 830.79 559.76 329.51 94.08 14.51 26.40 125.15 456.81 766.97 1036.01 6222.34
S.D. 139.71 121.67 102.36 106.21 112.47 55.45 20.59 28.29 63.98 115.44 109.25 148.97 398.02
SKEW 0.71 -0.21 0.08 0.37 0.50 0.40 2.89 2.27 0.54 0.35 -0.05 -0.07 0.26
MAX 1491.00 1164.50 1045.50 832.50 551.00 248.50 110.50 143.00 256.00 794.00 1067.50 1400.00 7102.46
MIN 881.50 560.00 556.50 367.00 152.50 6.50 0.00 0.00 35.50 167.50 489.00 689.00 5441.49
NO YRS 48 47 46 47 49 49 49 45 51 52 51 50 34