BLACK ROCK, UTAH

Monthly Total Growing Degree Days

(420730)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1951 0.00 z 0.00 z 0.00 z 114.50 s 512.50 665.17 a 0.00 z 956.50 741.50 233.50 23.00 0.00 3132.17
1952 2.00 0.00 20.50 240.00 551.50 684.00 943.00 1001.00 666.50 377.00 31.00 0.00 4516.50
1953 63.00 12.50 89.50 210.50 311.66 c 752.31 d 1117.50 931.03 a 738.10 a 287.02 b 140.00 2.50 4655.62
1954 9.50 34.50 54.00 h 352.24 a 607.17 b 731.90 a 1083.93 b 908.62 b 687.50 372.00 e 65.50 3.50 4856.36
1955 0.00 0.00 80.82 c 140.00 m 487.22 a 703.50 982.50 1028.00 698.28 a 370.28 d 40.86 a 74.63 d 4466.08
1956 56.50 2.00 f 143.00 294.50 602.43 a 832.50 1017.00 912.36 b 757.50 b 291.00 g 23.00 7.00 4645.80
1957 6.00 74.00 131.00 236.50 427.00 811.67 c 1018.19 b 1021.00 632.59 a 333.77 a 6.00 7.50 4705.21
1958 1.00 73.50 54.80 c 163.50 j 633.00 773.79 a 937.50 1011.50 673.50 361.00 82.80 e 19.50 4621.90
1959 14.50 5.04 c 97.50 337.50 480.00 843.50 1053.00 924.50 571.00 320.00 32.59 a 0.00 4679.13
1960 1.50 8.50 207.00 331.73 d 554.50 885.50 1095.50 995.50 822.50 381.50 98.50 5.50 5387.73
1961 0.00 28.00 134.00 268.50 545.17 b 887.50 1096.50 1014.00 535.50 278.50 13.45 a 13.00 4814.12
1962 2.00 42.00 35.50 350.77 d 460.00 726.00 967.00 974.50 724.50 362.00 122.50 14.00 4780.77
1963 15.00 74.50 72.50 192.50 661.50 698.00 1003.50 1027.13 a 758.50 516.00 111.00 0.00 5130.13
1964 0.00 0.50 40.00 219.00 476.50 676.07 b 1048.83 a 968.00 605.00 423.50 38.04 b 49.00 4544.44
1965 21.18 a 33.00 66.00 280.50 408.00 647.00 975.50 900.50 499.66 a 365.50 174.50 20.50 4391.84
1966 0.00 0.00 166.50 281.90 a 604.00 770.50 1040.50 970.50 680.00 302.00 140.00 27.00 4982.90
1967 3.00 15.50 181.00 138.21 b 478.43 a 650.00 1068.50 1005.50 676.00 372.50 152.07 a 0.00 4740.72
1968 0.00 51.50 109.50 180.50 489.00 800.00 1017.12 b 811.34 b 568.50 320.33 a 61.00 9.50 4418.30
1969 49.00 5.50 53.50 262.00 661.50 679.50 1018.50 1045.14 c 763.00 177.50 45.50 19.00 4779.64
1970 44.00 44.50 46.50 141.00 520.00 744.00 1021.50 1044.50 516.50 225.50 86.00 9.50 4443.50
1971 19.00 11.50 131.50 221.50 460.00 758.00 1044.00 981.00 535.50 256.50 44.50 15.00 4478.00
1972 21.50 74.00 222.50 269.50 514.50 827.50 1024.50 897.00 616.50 346.50 30.50 0.00 z 4844.50
1973 0.00 11.00 21.50 184.00 538.00 758.00 996.00 977.00 581.00 337.90 a 142.00 16.00 4562.40
1974 4.00 16.00 195.50 194.00 628.50 838.00 1001.00 912.50 652.50 305.00 44.00 5.00 4796.00
1975 10.50 18.00 82.50 116.00 390.50 668.00 997.00 886.00 629.50 315.00 52.00 13.50 4178.50
1976 0.00 45.00 59.00 205.50 599.50 726.00 1065.00 862.00 658.50 231.50 48.10 a 0.00 4500.10
1977 2.00 16.00 36.50 335.00 431.50 862.50 1025.50 970.50 691.00 352.50 113.50 42.50 4879.00
1978 11.50 40.00 203.50 263.50 432.50 746.00 1020.00 893.50 602.50 387.00 44.50 0.50 4645.00
1979 0.00 14.50 59.00 275.50 511.00 759.00 1009.00 921.00 731.50 409.00 21.00 8.50 4719.00
1980 22.00 61.00 42.00 272.00 415.50 717.50 1050.00 938.00 651.50 278.00 134.00 39.50 4621.00
1981 1.50 37.50 61.50 349.00 479.50 846.50 1099.50 1014.50 737.50 269.50 146.00 33.50 5076.00
1982 6.00 58.50 107.50 235.50 490.00 709.50 960.00 1031.00 644.00 202.00 23.00 0.50 4467.50
1983 6.50 42.00 127.00 153.50 396.50 720.50 956.50 962.00 729.00 344.00 146.00 11.00 4594.50
1984 0.00 0.00 44.50 190.50 622.00 724.00 1021.50 988.00 675.00 210.50 73.00 2.00 4551.00
1985 0.00 0.00 81.00 339.00 591.00 842.50 1056.00 934.50 537.00 301.50 47.50 2.50 4732.50
1986 24.50 114.50 227.50 282.50 512.50 855.50 962.50 1033.50 511.00 253.00 85.50 6.00 4868.50
1987 6.00 15.50 85.00 375.50 576.50 841.00 948.00 932.00 619.00 386.50 61.50 30.50 4877.00
1988 0.00 15.00 81.00 326.50 485.50 857.50 1087.00 950.00 613.50 467.50 138.50 0.00 5022.00
1989 0.00 32.00 246.00 403.00 538.50 726.00 1080.00 921.00 648.00 309.50 68.50 7.00 4979.50
1990 19.50 1.00 188.00 359.50 516.00 828.50 1081.50 948.50 781.50 370.50 43.50 1.00 5139.00
1991 0.00 19.00 81.00 214.50 444.50 746.50 1055.50 996.00 641.00 387.50 70.50 1.50 4657.50
1992 0.00 38.50 154.00 446.00 630.00 784.00 975.50 982.50 684.50 399.00 30.50 6.00 5130.50
1993 8.50 7.00 168.50 238.50 590.50 677.50 912.00 889.00 607.00 290.50 23.50 14.50 4427.00
1994 1.00 33.00 142.00 300.50 599.00 907.00 1066.00 1040.50 690.00 279.00 42.00 7.50 5107.50
1995 19.50 67.50 157.50 210.00 428.00 616.50 941.50 998.50 691.00 301.50 117.50 60.50 4609.50
1996 16.00 68.00 147.00 267.00 598.50 863.00 1077.50 976.50 614.00 304.50 99.50 47.00 5078.50
1997 30.00 13.00 188.00 237.50 572.00 800.00 930.50 1000.50 683.00 318.00 77.00 4.50 4854.00
1998 24.00 25.50 134.50 188.00 469.00 631.50 1019.50 981.00 684.00 253.50 96.50 14.50 4521.50
1999 19.50 49.00 132.00 173.50 469.50 762.50 1046.00 953.00 599.00 341.00 155.50 6.00 4706.50
2000 71.30 a 67.00 96.00 397.50 671.67 a 809.00 1027.00 1049.50 668.50 322.50 0.50 3.50 5183.97
2001 0.00 21.50 169.00 326.50 623.50 827.50 1026.50 1043.00 739.00 383.00 121.67 c 2.00 5283.17
2002 14.50 25.50 97.50 369.00 539.50 851.00 1123.50 916.00 662.50 240.00 32.00 9.00 4880.00
2003 18.00 18.50 162.00 288.50 584.50 803.50 1141.00 1032.00 645.50 457.50 38.50 24.00 5213.50
2004 0.00 13.50 248.50 314.00 579.00 854.50 1049.00 918.50 636.50 340.50 23.50 5.50 4983.00
2005 12.00 25.00 92.50 234.00 555.50 657.00 1068.00 958.50 621.00 327.00 119.00 33.00 4702.50
2006 10.00 34.50 67.50 329.00 634.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1075.50
Period of Record Statistics
MEAN 12.49 30.59 116.09 267.98 528.39 766.64 1026.83 966.18 655.06 327.00 73.49 13.98 4775.42
S.D. 16.69 25.52 61.08 74.87 80.86 75.46 53.39 53.69 71.92 68.22 46.70 16.62 268.78
SKEW 1.88 0.96 0.40 0.13 -0.26 -0.10 -0.13 -0.42 -0.15 0.18 0.44 1.75 0.24
MAX 71.30 114.50 248.50 446.00 671.67 907.00 1141.00 1049.50 822.50 516.00 174.50 74.63 5387.73
MIN 0.00 0.00 20.50 116.00 311.66 616.50 912.00 811.34 499.66 177.50 0.50 0.00 4178.50
NO YRS 55 54 54 53 56 55 54 55 55 54 55 54 49