WILLIAMS, ARIZONA

Monthly Total Heating Degree Days

(029359)

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
1897 0.00 z 0.00 z 163.00 y 507.93 a 228.50 108.00 12.00 13.95 a 120.00 480.50 a 616.07 b 1063.00 3149.95
1898 1197.50 825.00 949.63 a 429.00 411.00 0.00 z 0.00 z 0.00 z 0.00 z 303.50 n 848.50 1126.50 5787.13
1899 1111.00 944.50 835.00 487.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3377.50
1900 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 0.00 z 0.00 z 0.00
1901 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 0.00 z 0.00 z 0.00
1902 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 23.00 14.00 0.00 z 0.00 z 894.50 0.00 z 931.50
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 166.50 405.50 521.00 910.22 b 2003.22
1904 1085.50 685.50 643.00 511.50 268.50 53.00 11.22 b 25.00 166.55 a 443.50 623.00 919.50 5435.78
1905 864.50 840.00 770.50 608.00 483.00 99.50 15.00 10.00 94.14 a 396.50 689.50 0.00 z 4870.64
1906 0.00 z 0.00 z 0.00 z 477.50 404.50 156.50 71.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1109.50
1907 0.00 z 0.00 z 0.00 z 286.50 l 481.00 239.50 16.02 a 30.50 168.50 299.67 a 0.00 z 0.00 z 1235.18
1908 0.00 z 911.00 755.00 585.00 239.00 r 237.00 19.00 35.00 166.00 422.50 784.50 1004.50 4919.50
1909 900.72 d 750.00 f 879.50 596.00 448.98 a 103.50 9.00 1.00 100.50 283.50 498.00 0.00 z 3820.71
1910 0.00 z 0.00 z 625.50 466.55 a 250.50 37.76 a 18.50 1.00 75.00 275.50 637.00 840.50 3227.81
1911 884.02 a 915.50 669.27 c 577.00 386.00 70.00 n 0.00 z 47.00 n 152.00 467.14 b 809.00 1194.50 6054.42
1912 804.34 c 878.00 905.50 769.14 a 373.00 113.79 a 42.50 34.50 195.00 f 476.50 214.50 t 942.92 a 5340.19
1913 1166.08 e 885.00 930.00 488.50 312.50 174.11 b 43.50 7.50 142.50 455.50 491.50 i 1047.50 5652.68
1914 864.50 815.77 b 664.00 483.50 270.50 92.00 8.50 2.67 b 56.50 g 492.12 c 651.50 1095.33 a 5440.40
1915 1125.50 579.50 k 597.50 g 559.00 452.50 135.00 a 5.00 5.00 149.50 346.00 671.00 1013.00 4461.50
1916 1047.50 745.50 493.00 f 507.50 347.00 71.25 b 6.50 24.00 g 194.48 a 569.07 c 827.00 1156.50 5472.30
1917 1207.50 950.00 965.00 706.00 565.00 117.50 11.00 66.50 146.00 414.50 642.50 812.00 6603.50
1918 1159.00 848.50 780.50 612.50 431.00 62.50 18.50 88.50 111.92 d 347.50 k 906.00 1147.00 a 6165.92
1919 1191.00 1175.50 960.00 540.00 270.50 128.00 9.50 32.19 e 101.90 a 659.27 a 759.31 a 935.68 a 6762.85
1920 920.00 823.00 890.00 735.50 329.50 136.07 b 16.03 b 67.50 200.50 581.50 791.00 1149.00 6639.61
1921 1023.00 829.50 706.00 662.00 397.00 133.93 b 26.50 26.50 179.50 428.50 708.50 911.50 6032.43
1922 1248.55 b 941.00 931.00 722.50 346.00 61.50 4.50 8.00 99.50 511.50 904.00 956.50 6734.55
1923 946.50 1030.50 959.00 605.50 321.00 173.50 13.00 54.50 275.50 590.00 773.00 1026.88 c 6768.88
1924 1135.12 a 863.00 1018.50 711.00 340.50 107.50 20.50 36.50 300.00 560.50 763.50 1144.00 7000.62
1925 1191.50 803.50 797.50 597.00 265.50 142.00 33.00 50.50 274.50 530.00 832.50 850.00 6367.50
1926 1132.61 c 855.00 772.00 557.00 354.50 92.00 29.00 44.50 143.50 455.50 757.00 1131.50 6324.11
1927 909.50 810.00 874.50 626.50 367.00 172.50 30.00 90.50 211.50 508.50 684.50 1197.00 6482.00
1928 1048.00 977.50 782.50 630.00 315.50 127.50 19.00 68.50 125.00 514.00 834.64 b 1139.00 6581.14
1929 1188.00 1089.50 921.00 689.00 357.50 143.00 15.00 41.50 121.00 513.00 892.50 879.00 6850.00
1930 1260.50 839.00 917.50 503.00 570.50 135.50 53.00 114.00 254.50 643.00 943.00 1146.50 7380.00
1931 1131.50 870.50 859.50 508.50 380.50 125.50 9.00 38.00 212.50 521.00 990.50 1221.50 6868.50
1932 1374.00 1019.00 903.00 630.00 413.50 238.00 29.00 74.00 255.00 562.00 698.00 1231.00 7426.50
1933 1223.00 1199.00 844.00 711.00 571.00 106.00 1.50 51.50 122.00 433.00 762.00 965.00 6989.00
1934 1039.50 793.50 663.50 495.00 253.50 241.00 91.50 24.00 173.33 c 385.00 754.50 904.00 5818.33
1935 1059.50 831.50 882.00 543.50 464.00 52.00 16.50 18.00 139.50 553.50 845.00 1018.00 6423.00
1936 1066.50 1000.50 796.50 487.00 256.50 81.50 23.50 21.00 222.50 533.00 790.00 1036.00 6314.50
1937 1528.50 992.00 902.50 608.00 242.00 99.00 19.50 5.00 93.50 402.00 740.00 914.00 6546.00
1938 998.00 950.50 910.50 553.50 356.00 85.00 34.10 a 42.50 140.00 504.50 918.00 984.00 6476.60
1939 1113.50 1207.00 783.50 509.00 283.50 66.00 2.00 4.00 181.00 534.50 714.50 866.50 6265.00
1940 967.00 874.00 730.50 539.50 251.00 64.50 20.00 25.50 136.00 469.13 a 801.00 861.00 5739.13
1941 1008.50 751.50 810.00 731.00 335.50 173.50 29.00 43.50 228.50 614.00 724.00 978.50 6427.50
1942 1032.50 1023.50 936.50 589.50 379.50 108.50 2.67 b 33.00 157.00 514.00 657.50 920.50 6354.67
1943 1030.00 825.50 750.00 463.00 134.50 s 67.76 a 27.00 8.50 129.00 433.00 756.50 1016.00 5506.26
1944 1089.00 970.50 951.50 675.50 388.00 175.50 20.50 3.50 91.50 376.00 802.50 944.00 6488.00
1945 1066.00 822.50 967.50 616.50 294.50 142.50 3.00 10.00 148.50 355.00 723.00 1064.00 6213.00
1946 1038.00 912.50 725.00 379.00 266.00 7.50 1.50 7.00 53.00 519.50 816.00 789.00 5514.00
1947 1080.50 676.00 689.50 553.50 198.00 72.50 1.50 29.00 0.00 z 0.00 z 0.00 z 865.00 f 3300.50
1948 886.00 944.00 1008.50 448.50 243.00 62.00 0.00 6.00 81.00 360.00 774.50 941.50 5755.00
1949 1320.50 995.50 823.00 418.50 325.50 91.00 7.23 a 23.50 108.00 521.00 469.50 1023.50 6126.73
1950 1031.00 714.50 698.50 373.00 329.50 66.50 20.00 16.00 167.50 175.50 526.50 694.50 4813.00
1951 985.50 832.50 828.50 562.50 313.50 127.50 0.00 40.50 47.50 416.50 735.50 1014.00 5904.00
1952 1022.00 940.00 1052.50 567.50 243.00 80.00 11.33 e 13.00 93.00 228.00 911.00 1000.50 6161.83
1953 822.50 886.00 770.00 586.00 498.50 86.50 11.50 36.50 52.00 414.50 607.50 997.50 5769.00
1954 897.00 667.50 860.50 396.50 233.00 116.50 2.50 18.50 93.50 324.00 572.00 905.50 5087.00
1955 1158.50 1031.00 774.50 616.00 391.50 154.50 17.00 12.00 127.00 290.50 701.50 814.50 6088.50
1956 825.50 1013.00 692.50 597.00 264.50 21.00 19.50 43.50 15.50 421.00 754.00 645.00 i 4667.00
1957 1015.50 657.50 761.50 628.00 497.50 84.00 11.00 39.00 92.50 511.50 867.50 803.00 5968.50
1958 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 0.00 z 0.00 z 0.00
1959 870.50 913.50 731.00 427.50 352.00 31.50 0.00 30.50 152.00 352.00 675.00 886.50 5422.00
1960 1133.00 1020.50 657.50 493.00 330.00 38.50 0.00 18.00 62.00 488.50 672.50 1006.00 5919.50
1961 869.00 788.50 793.00 510.00 334.00 66.00 7.50 30.50 210.50 441.50 817.00 986.00 5853.50
1962 1020.50 847.00 969.50 393.50 389.00 131.38 a 5.50 0.50 93.50 379.50 588.00 841.00 5658.88
1963 1049.00 659.50 826.00 626.50 222.00 151.50 0.00 39.50 82.00 321.00 672.00 888.00 5537.00
1964 1060.50 1010.50 975.50 650.50 355.50 114.50 1.00 42.50 163.50 258.00 813.00 933.00 6378.00
1965 873.50 880.00 899.50 669.50 440.00 232.00 24.00 27.50 247.50 299.50 659.00 937.00 6189.00
1966 1086.00 1006.50 719.50 469.50 246.50 69.50 2.00 9.00 126.50 411.50 661.00 962.00 5769.50
1967 932.00 791.00 674.00 706.00 419.00 202.50 7.00 13.50 129.00 348.00 626.00 1151.50 5999.50
1968 1042.50 766.00 780.50 649.50 353.00 114.50 22.73 a 95.07 a 147.50 386.00 744.00 996.50 6097.80
1969 857.50 917.00 944.00 536.00 275.00 120.00 6.50 6.50 105.50 544.00 722.00 865.00 5899.00
1970 954.00 705.50 863.50 728.50 312.00 152.00 4.00 14.00 230.50 545.00 675.00 971.00 6155.00
1971 965.50 821.85 a 722.00 582.00 471.00 113.50 0.00 30.50 162.00 627.23 a 745.50 1118.50 6359.58
1972 930.00 799.50 601.50 543.50 347.50 139.00 3.50 42.50 165.50 550.00 901.00 1073.50 6097.00
1973 1146.50 0.00 z 1035.50 758.00 318.00 101.50 4.00 18.00 116.00 348.50 752.50 884.50 5483.00
1974 1048.50 841.50 666.50 575.00 218.00 34.00 11.50 10.00 146.90 a 406.00 697.50 1009.00 5664.40
1975 915.00 887.00 868.50 745.00 395.50 92.00 5.00 13.00 109.00 385.50 658.00 873.00 5946.50
1976 862.50 736.00 846.00 593.00 296.00 110.50 23.00 16.00 181.50 444.50 623.00 862.50 5594.50
1977 1008.00 742.00 879.50 518.50 483.00 53.50 7.50 11.50 93.50 374.00 675.50 804.00 5650.50
1978 918.50 853.50 697.00 580.50 375.00 85.00 16.00 26.00 199.00 310.50 787.50 1080.00 5928.50
1979 1179.50 932.00 866.50 588.00 475.85 a 149.00 15.00 103.50 48.75 b 338.00 849.00 813.50 6358.60
1980 950.00 780.00 913.00 590.00 498.58 a 65.00 3.00 13.50 64.50 410.50 611.50 656.50 5556.08
1981 802.50 701.00 824.00 442.00 326.00 30.50 3.62 a 30.50 127.50 505.50 597.50 757.00 5147.62
1982 974.00 704.00 843.50 537.00 358.50 121.00 17.00 11.50 144.50 486.00 788.50 964.00 5949.50
1983 883.50 808.00 820.50 722.50 360.00 94.50 2.00 37.00 89.50 424.00 753.50 862.50 5857.50
1984 901.00 836.00 719.00 588.00 119.50 82.00 9.00 34.50 96.50 589.00 731.50 956.00 5662.00
1985 1022.50 861.00 830.00 435.50 267.00 60.50 7.50 0.00 236.50 431.50 798.00 872.00 5822.00
1986 726.50 752.00 673.50 509.00 267.50 36.00 27.00 12.00 242.50 528.50 705.00 941.00 5420.50
1987 1002.50 883.00 889.50 474.00 344.00 54.00 35.50 38.50 127.50 331.50 776.50 1042.50 5999.00
1988 992.50 775.00 763.00 543.00 341.50 43.00 2.00 13.50 175.00 248.50 738.50 1001.50 5637.00
1989 1053.00 803.00 559.00 0.00 z 239.50 67.00 4.00 28.00 114.50 411.00 678.50 839.50 4797.00
1990 1035.00 923.00 758.00 492.00 319.00 47.00 14.00 53.00 120.50 372.50 685.50 1081.50 5901.00
1991 1013.50 671.50 959.00 608.50 382.50 121.50 2.50 9.50 120.50 335.00 735.50 950.50 5910.00
1992 990.50 820.50 773.50 408.50 288.50 112.50 16.50 44.00 93.00 335.50 868.50 1111.50 5863.00
1993 951.00 842.50 704.50 492.50 283.50 102.00 2.50 28.50 124.50 432.50 769.50 914.50 5648.00
1994 876.50 906.00 671.00 563.50 342.50 16.00 5.00 0.00 90.50 530.00 860.00 911.50 5772.50
1995 1010.00 654.00 750.50 641.00 471.50 167.50 10.50 1.50 88.00 380.00 550.50 884.50 5609.50
1996 888.50 713.00 734.50 495.00 208.00 17.00 2.50 11.50 206.00 484.00 695.00 868.00 5323.00
1997 996.00 871.00 663.50 651.50 216.50 82.00 8.00 12.00 74.50 480.50 669.00 1034.00 5758.50
1998 937.50 973.50 830.00 742.50 409.50 160.50 9.00 3.50 106.50 482.00 699.00 941.00 6294.50
1999 846.00 731.00 668.50 695.69 a 323.50 122.00 24.50 24.50 152.50 331.50 523.00 932.50 5375.19
2000 858.50 739.00 811.00 391.00 148.00 21.00 0.50 29.50 57.00 472.75 a 924.00 814.00 5266.25
2001 1013.50 844.50 728.50 535.00 147.50 28.00 10.00 6.00 19.50 304.00 667.50 1002.00 5306.00
2002 928.50 723.50 766.00 400.50 262.00 13.50 0.00 0.00 116.50 473.00 649.50 968.00 5301.00
2003 702.00 809.00 749.50 556.50 234.50 36.00 0.00 9.00 46.50 208.00 731.90 a 904.00 4986.90
2004 918.50 775.00 353.50 g 535.50 196.00 32.00 5.50 37.50 168.00 509.50 815.00 915.00 4907.50
2005 915.00 833.50 778.50 536.50 254.50 86.50 0.00 18.50 89.50 395.00 584.50 860.50 5352.50
2006 891.00 722.00 869.50 503.00 181.00 12.00 5.50 15.50 190.50 462.42 a 623.50 931.50 5407.42
2007 1042.50 768.50 633.50 474.00 226.50 48.50 18.00 3.00 134.00 401.00 547.00 1022.00 5318.50
2008 1059.00 879.00 694.00 493.50 0.00 z 52.00 6.00 8.50 95.50 353.00 604.50 966.17 a 5211.17
2009 0.00 z 819.00 670.50 538.00 149.50 133.50 0.50 13.50 71.50 477.00 578.00 1101.50 4552.50
2010 944.00 868.50 804.50 596.00 373.50 56.00 1.50 19.50 43.00 411.00 751.00 779.43 c 5647.93
2011 957.38 a 919.52 c 679.86 b 498.00 e 281.00 g 60.50 6.72 a 0.00 82.00 375.00 737.00 1017.00 5332.98
2012 72.00 z 856.50 706.00 302.00 o 71.50 y 32.07 a 10.33 d 10.73 e 120.58 d 895.50 832.00 1051.50 4515.21
2013 1094.50 943.00 639.24 b 17.00 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 2676.74
Period of Record Statistics
MEAN 1012.57 858.20 803.51 562.68 333.04 98.75 13.46 26.47 135.87 438.51 728.68 966.13 5989.08
S.D. 133.85 114.72 109.31 94.83 95.16 53.98 14.33 23.31 58.49 107.33 106.36 115.03 530.89
SKEW 0.69 0.59 0.15 0.19 0.29 0.61 2.45 1.52 0.52 0.52 -0.03 0.10 0.37
MAX 1528.50 1207.00 1052.50 769.14 571.00 241.00 91.50 114.00 300.00 895.50 990.50 1231.00 7426.50
MIN 702.00 654.00 559.00 373.00 119.50 7.50 0.00 0.00 15.50 175.50 469.50 656.50 4813.00
NO YRS 105 105 106 108 105 108 109 107 106 107 107 105 85