COTTONWOOD, ARIZONA

Monthly Total Heating Degree Days

(022193)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 197706
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
1949 0.00 z 0.00 z 0.00 z 142.50 44.00 5.50 0.00 0.00 0.00 205.00 252.50 709.50 1359.00
1950 776.50 421.00 357.00 72.50 68.50 1.50 0.00 0.00 3.00 11.00 293.00 474.00 2478.00
1951 715.00 540.00 422.50 194.00 92.50 2.00 0.00 3.50 0.00 96.50 454.50 738.50 3259.00
1952 737.00 586.73 a 582.00 173.00 19.00 g 2.50 k 0.00 0.00 0.00 14.50 530.50 713.50 3337.23
1953 544.50 544.96 a 261.50 h 207.00 144.00 0.50 0.00 0.00 0.00 119.50 342.50 704.50 2607.46
1954 641.50 330.50 430.00 67.50 22.00 0.50 0.00 0.00 0.00 69.00 264.00 640.00 2465.00
1955 769.50 625.50 380.00 227.50 52.50 7.00 0.00 0.00 1.50 36.50 401.00 571.00 3072.00
1956 565.00 660.50 325.50 193.00 5.50 0.00 0.00 0.00 0.00 114.50 448.50 634.50 2947.00
1957 615.00 296.50 333.00 205.00 104.50 0.00 0.00 0.00 0.00 138.50 515.00 567.00 2774.50
1958 631.00 429.00 530.00 226.00 13.50 0.00 0.00 0.00 2.00 69.00 415.00 510.50 2826.00
1959 588.50 548.00 347.00 93.50 40.50 0.00 0.00 0.00 0.50 74.00 359.50 583.00 2634.50
1960 801.00 635.50 247.00 134.00 37.50 0.00 0.00 0.00 0.00 133.50 386.00 657.00 3031.50
1961 572.50 434.50 390.50 138.50 31.00 1.00 0.00 0.00 1.00 118.50 479.00 688.00 2854.50
1962 666.00 475.00 530.50 57.00 75.00 4.00 0.00 0.00 0.00 33.50 269.00 526.00 2636.00
1963 732.00 343.50 387.00 228.00 4.00 1.50 0.00 0.00 0.00 17.50 350.50 619.50 2683.50
1964 742.00 636.00 494.00 246.00 97.00 0.00 0.00 0.00 0.00 19.00 494.00 685.50 3413.50
1965 579.00 496.00 472.00 263.00 115.50 11.50 0.00 0.00 29.50 41.50 297.50 647.50 2953.00
1966 758.50 627.00 316.50 116.00 15.50 0.00 0.00 0.00 0.00 74.00 324.00 631.50 2863.00
1967 648.50 430.00 293.50 325.50 76.50 2.50 0.00 0.00 0.00 29.50 274.50 909.50 2990.00
1968 786.00 367.00 368.50 236.50 42.00 15.00 0.00 0.00 1.00 65.50 431.00 790.00 3102.50
1969 561.00 561.00 496.50 164.00 61.00 0.00 0.00 0.00 0.00 179.50 420.50 599.50 3043.00
1970 714.00 417.50 428.04 e 307.00 26.50 0.00 0.00 0.00 11.50 197.00 385.50 723.00 3210.04
1971 690.50 508.50 340.00 208.50 94.50 13.00 0.00 0.00 10.50 276.50 455.00 787.50 3384.50
1972 717.50 447.50 138.50 140.00 17.50 0.00 0.00 0.00 1.00 181.50 544.00 734.50 2922.00
1973 753.50 533.50 610.50 287.50 34.00 1.00 0.00 0.00 0.50 90.50 454.00 662.00 3427.00
1974 704.50 557.00 328.50 191.50 16.00 0.00 0.00 0.00 0.00 96.00 416.50 761.00 3071.00
1975 695.00 530.00 481.00 361.00 78.50 0.00 0.00 0.00 0.00 120.00 415.50 612.00 3293.00
1976 622.00 441.00 451.00 246.00 25.50 1.50 0.00 0.00 1.00 139.50 380.00 667.50 2975.00
1977 697.00 444.00 489.50 148.50 113.50 0.00 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1892.50
Period of Record Statistics
MEAN 679.43 495.26 406.30 193.10 55.30 2.52 0.00 0.12 2.25 98.61 394.73 662.41 2972.36
S.D. 76.52 99.26 105.28 76.49 38.33 4.25 0.00 0.66 6.06 66.67 83.39 93.68 270.84
SKEW -0.25 -0.14 -0.23 0.14 0.55 1.90 0.00 5.00 3.63 0.72 -0.09 0.28 -0.09
MAX 801.00 660.50 610.50 361.00 144.00 15.00 0.00 3.50 29.50 276.50 544.00 909.50 3427.00
MIN 544.50 296.50 138.50 57.00 4.00 0.00 0.00 0.00 0.00 11.00 252.50 474.00 2465.00
NO YRS 28 28 27 29 28 27 28 28 28 28 28 28 25