COLORADO CITY, ARIZONA

Monthly Total Heating Degree Days

(021920)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201201
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
1963 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 b 20.50 0.00 z 0.00 z 0.00 z 20.50
1964 0.00 z 0.00 z 0.00 z 0.00 z 249.11 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 249.11
1965 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 134.50 156.00 496.00 841.50 1628.00
1966 962.50 830.50 541.50 316.50 75.00 14.00 0.00 0.00 9.50 264.03 b 524.50 911.50 4449.53
1967 967.50 703.50 568.50 589.66 a 87.00 i 52.50 0.00 0.00 14.50 229.00 486.72 a 1110.32 a 4722.20
1968 1003.50 565.50 591.00 490.50 178.25 e 50.50 0.00 b 7.00 60.50 240.00 630.00 1033.00 4849.75
1969 822.50 802.50 750.00 388.00 104.50 37.00 0.00 0.00 22.50 407.00 601.50 794.50 4730.00
1970 884.00 577.50 715.00 555.00 133.50 33.50 0.00 0.00 91.00 393.00 579.50 878.00 4840.00
1971 908.00 759.00 621.50 397.00 282.00 41.00 0.00 0.00 93.50 413.50 642.00 1006.50 5164.00
1972 929.00 684.50 435.50 387.50 149.50 1.50 0.00 0.00 52.50 358.00 747.00 1023.00 4768.00
1973 1181.50 736.00 799.50 493.00 127.00 46.00 0.00 0.00 48.50 271.50 662.00 828.50 5193.50
1974 1022.00 758.00 538.50 436.50 102.00 9.00 0.00 0.00 22.50 217.00 615.50 967.50 4688.50
1975 962.50 778.00 757.50 608.50 267.50 27.50 0.00 0.00 5.50 264.50 661.00 838.00 5170.50
1976 853.50 633.00 713.50 448.00 81.00 22.50 0.00 0.00 45.50 344.00 589.00 888.50 4618.50
1977 952.00 659.00 755.00 291.50 304.00 0.50 0.00 1.00 41.00 149.00 539.00 725.50 4417.50
1978 821.50 688.00 483.50 430.50 217.00 0.00 0.00 0.00 74.00 136.00 639.00 1046.00 4535.50
1979 1119.50 830.50 659.00 388.50 145.00 37.50 0.00 9.50 0.00 180.50 691.00 787.50 4848.50
1980 821.50 632.50 719.50 361.50 249.00 17.50 0.00 0.00 12.50 299.00 550.00 649.00 4312.00
1981 736.50 629.50 642.00 249.00 164.50 19.00 0.00 0.00 6.50 344.50 461.50 767.00 4020.00
1982 1009.00 702.50 654.50 412.50 157.00 25.00 2.00 0.00 77.00 339.00 659.50 890.50 4928.50
1983 824.50 666.50 644.00 528.50 248.00 15.50 0.50 2.00 19.50 235.50 613.50 831.00 4629.00
1984 897.50 778.50 667.00 471.00 72.00 19.00 0.00 0.00 11.50 474.50 653.50 891.50 4936.00
1985 931.50 809.50 664.00 263.50 87.50 14.50 0.00 0.00 102.50 268.50 776.00 847.50 4765.00
1986 675.00 628.00 454.50 358.00 155.50 4.50 0.00 0.00 164.00 318.50 624.50 848.00 4230.50
1987 977.50 716.50 699.00 258.00 123.50 0.50 1.00 0.00 8.00 178.50 632.50 974.50 4569.50
1988 935.00 669.00 635.00 364.00 205.50 14.00 0.00 0.00 64.00 97.50 630.00 951.00 4565.00
1989 1080.50 748.50 450.50 188.50 139.50 3.00 0.00 1.50 23.00 287.50 577.00 893.50 4393.00
1990 895.50 774.50 522.50 293.00 152.00 15.00 0.00 0.00 9.50 219.50 601.00 1107.50 4590.00
1991 965.00 531.50 735.50 452.50 229.50 25.50 0.00 0.00 6.00 240.50 631.00 901.00 4718.00
1992 967.00 642.50 578.50 221.50 68.50 26.00 2.00 7.50 10.50 199.00 765.00 1045.50 4533.50
1993 880.50 732.00 553.50 351.00 110.00 53.00 0.00 0.00 22.50 273.00 685.50 835.50 4496.50
1994 795.00 745.00 437.00 362.50 97.00 0.00 0.00 0.00 10.00 274.00 732.00 793.50 4246.00
1995 827.50 424.50 546.00 429.00 219.00 78.50 0.00 0.00 17.00 201.00 436.50 760.50 3939.50
1996 860.50 599.50 548.50 305.50 85.00 0.50 0.00 0.00 60.00 316.00 561.00 780.50 4117.00
1997 899.00 686.00 426.50 413.00 40.00 20.00 0.00 0.00 6.00 271.00 543.00 897.00 4201.50
1998 810.00 763.00 590.50 469.00 191.00 51.50 0.00 0.00 25.00 343.00 614.00 872.00 4729.00
1999 841.00 688.50 572.50 570.00 237.50 77.50 0.00 1.00 33.50 232.00 463.00 929.50 4646.00
2000 0.00 z 645.00 595.00 238.50 89.50 2.50 0.00 4.00 26.00 271.00 782.68 b 784.50 3438.68
2001 928.45 a 752.50 561.50 383.50 83.18 a 32.50 0.00 0.00 0.00 190.65 a 517.00 993.00 4442.28
2002 901.50 701.00 694.00 230.00 156.50 5.00 0.00 0.00 31.00 324.00 595.00 900.00 4538.00
2003 0.00 z 730.00 642.50 453.00 170.00 0.00 z 0.00 z 0.00 0.00 z 78.50 0.00 z 815.00 2889.00
2004 838.00 855.50 393.00 348.00 93.00 10.50 0.00 0.00 z 0.00 z 311.50 712.00 881.00 4442.50
2005 813.00 701.00 657.50 450.00 189.50 44.00 0.00 0.00 20.50 208.00 543.50 866.00 4493.00
2006 864.50 662.00 704.00 352.50 80.50 3.00 0.00 0.00 79.50 324.00 528.50 945.00 4543.50
2007 1037.50 677.50 474.00 346.50 85.00 26.00 0.00 0.00 0.00 z 139.00 l 580.50 1035.50 4262.50
2008 1014.00 834.50 658.50 442.00 0.00 z 0.00 z 0.00 g 0.00 l 6.00 n 298.50 593.50 1052.00 4893.00
2009 871.00 703.50 623.50 468.00 37.00 39.50 0.00 0.00 4.50 451.50 556.50 1137.00 4892.00
2010 926.00 771.50 710.50 471.50 318.50 29.00 0.00 2.50 15.50 249.00 724.00 563.50 i 4218.00
2011 982.00 835.85 a 649.00 411.00 f 182.00 i 21.60 e 0.00 0.00 a 7.76 a 219.00 f 683.04 b 960.48 a 4139.73
2012 882.47 a 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 882.47
2013 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
Period of Record Statistics
MEAN 912.83 705.29 609.42 393.90 153.40 24.24 0.12 0.78 36.57 269.82 611.52 902.51 4598.63
S.D. 96.60 86.90 101.52 100.94 73.15 20.05 0.44 2.10 37.34 86.92 84.44 108.50 297.33
SKEW 0.32 -0.68 -0.33 0.01 0.49 0.85 3.76 3.00 1.55 0.13 0.09 0.20 -0.06
MAX 1181.50 855.50 799.50 608.50 318.50 78.50 2.00 9.50 164.00 474.50 782.68 1137.00 5193.50
MIN 675.00 424.50 393.00 188.50 37.00 0.00 0.00 0.00 0.00 78.50 436.50 649.00 3939.50
NO YRS 45 46 46 45 44 44 46 46 44 45 46 46 38