SNOWFLAKE 15 W, ARIZONA

Monthly Total Growing Degree Days

(028018)

Base Temperature = 40 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 199802
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
1965 0.00 z 0.00 z 0.00 z 0.00 z 460.00 654.00 976.50 945.00 686.00 503.00 228.00 18.00 4470.50
1966 4.50 4.50 147.50 347.50 644.50 789.50 1036.00 973.50 767.50 426.50 262.50 58.50 5462.50
1967 44.00 41.50 237.00 248.00 506.00 724.00 1004.50 940.00 734.50 481.00 209.00 3.50 5173.00
1968 2.00 75.50 126.00 202.50 517.50 844.50 990.00 801.35 a 712.50 443.09 b 61.00 19.50 4795.44
1969 53.50 6.00 79.00 282.86 b 556.50 781.50 834.00 f 1023.00 d 763.45 a 302.50 82.00 69.50 3999.81
1970 39.50 46.00 66.00 159.50 565.50 797.00 1048.66 b 975.50 628.00 272.50 147.00 25.50 4770.66
1971 59.00 57.50 195.50 217.50 424.50 806.00 1064.50 938.50 688.50 279.00 98.50 37.00 4866.00
1972 39.50 94.00 313.50 312.00 509.00 780.00 1044.00 931.00 714.50 437.00 27.00 16.50 5218.00
1973 2.00 13.50 27.50 194.00 538.50 760.00 955.50 932.00 670.50 413.50 211.00 51.50 4769.50
1974 10.50 21.50 215.00 258.50 620.00 1015.50 1000.50 917.50 729.00 460.50 85.50 12.83 b 5346.83
1975 28.86 b 25.00 112.50 163.50 423.48 c 788.00 1023.50 968.00 729.64 b 457.00 93.00 j 13.90 b 4733.38
1976 9.50 46.50 85.00 284.00 576.50 831.00 981.00 911.50 672.00 345.50 144.50 7.15 e 4894.15
1977 1.00 43.00 72.69 b 308.00 420.88 e 636.50 h 610.00 l 738.00 h 490.50 k 491.50 175.50 110.57 a 1623.14
1978 32.03 a 49.00 139.50 d 134.00 q 479.50 871.50 1043.50 947.50 718.50 547.00 126.67 c 9.62 b 4964.32
1979 4.50 21.00 f 106.00 296.00 454.50 760.34 a 983.50 883.50 a 831.00 533.50 59.50 16.50 4928.84
1980 11.50 51.00 47.50 216.72 a 368.50 821.00 1031.50 945.00 749.50 371.00 163.00 61.00 4837.22
1981 20.00 59.00 60.50 352.50 532.50 916.00 1024.00 972.00 719.50 383.50 196.00 46.00 5281.50
1982 21.50 44.50 119.50 300.50 511.00 740.00 963.00 940.50 732.00 316.50 86.00 30.00 4805.00
1983 6.50 30.50 98.50 169.50 496.50 733.50 986.00 940.00 835.00 434.50 160.00 57.50 4948.00
1984 0.00 15.00 152.50 238.50 712.00 798.50 989.50 920.50 759.00 253.00 132.00 7.50 4978.00
1985 14.50 45.00 123.50 357.50 551.50 856.50 1036.50 950.00 619.50 413.33 a 142.00 18.50 5128.33
1986 49.00 93.50 215.50 318.50 577.50 852.50 940.00 1006.00 640.34 a 323.00 116.00 16.00 5147.84
1987 23.50 38.50 66.50 i 365.50 486.50 835.00 922.00 886.50 703.50 543.50 88.50 40.00 4933.00
1988 12.50 64.50 146.50 283.00 537.00 832.00 1041.50 941.50 648.00 573.50 187.50 11.00 5278.50
1989 0.50 82.50 261.50 492.50 655.50 833.50 1076.50 920.50 766.00 416.00 123.00 17.00 5645.00
1990 15.50 35.50 195.50 343.50 513.50 918.50 1041.00 892.50 775.50 432.50 125.00 4.00 5292.50
1991 1.50 45.50 67.00 230.50 476.50 664.00 966.00 977.00 755.00 530.00 95.50 1.50 4810.00
1992 0.50 23.50 111.50 427.50 572.50 774.00 971.00 900.50 734.00 496.00 51.50 20.00 5082.50
1993 15.00 19.50 156.50 320.50 620.50 748.00 960.00 936.00 701.50 395.50 80.00 14.00 4967.00
1994 23.00 43.00 170.00 318.50 518.00 929.50 1055.50 1050.50 770.00 385.00 114.00 22.50 5399.50
1995 19.50 87.00 186.50 237.00 446.00 728.50 1019.00 1047.00 804.00 470.00 230.50 100.00 5375.00
1996 41.00 159.00 145.00 367.50 729.50 923.00 1092.00 1026.50 670.00 445.00 135.00 57.00 5790.50
1997 20.50 25.50 263.00 268.00 726.50 804.50 1017.00 982.00 841.50 420.50 164.00 5.50 5538.50
1998 32.00 20.00 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 0.00 z 52.00
Period of Record Statistics
MEAN 19.95 47.06 143.33 286.50 537.22 809.73 1009.15 947.57 727.17 424.10 134.60 30.27 5138.50
S.D. 16.99 31.62 69.55 76.77 88.78 77.66 41.71 50.61 57.39 83.46 57.53 27.26 290.74
SKEW 0.67 1.48 0.53 0.43 0.53 0.38 -0.08 -0.17 0.12 -0.30 0.30 1.37 0.44
MAX 59.00 159.00 313.50 492.50 729.50 1015.50 1092.00 1050.50 841.50 573.50 262.50 110.57 5790.50
MIN 0.00 4.50 27.50 159.50 368.50 654.00 922.00 801.35 619.50 253.00 27.00 1.50 4769.50
NO YRS 33 32 31 31 33 32 31 32 32 33 32 33 26