BLACK ROCK, UTAH

Monthly Total Heating Degree Days

(420730)

Base Temperature = 65 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 162.50 s 272.00 140.69 a 0.00 z 7.00 69.50 556.50 908.00 1288.00 3241.69
1952 1296.50 1078.50 976.50 514.00 223.50 79.50 6.00 0.00 111.50 398.00 1018.50 1093.00 6795.50
1953 831.50 931.00 782.00 591.00 489.91 c 51.92 d 0.00 7.75 a 54.31 a 491.72 b 697.50 1235.50 6164.12
1954 1037.50 832.50 596.00 h 399.31 a 181.19 b 99.83 a 0.00 b 12.83 b 108.00 419.10 e 747.50 1133.50 4971.25
1955 1375.00 1251.50 800.46 c 320.50 m 288.30 a 87.50 4.00 0.00 134.48 a 404.72 d 830.17 a 893.26 d 6069.40
1956 847.00 923.50 f 728.00 469.00 179.28 a 22.50 0.00 2.14 b 60.00 b 315.50 g 975.50 1141.50 4424.92
1957 1198.50 781.00 695.50 513.50 348.00 36.67 c 0.00 b 7.50 135.52 a 441.23 a 970.00 1008.00 6135.42
1958 1124.50 715.50 880.73 c 343.50 j 165.50 51.72 a 3.00 0.00 132.00 430.00 866.40 e 939.00 5308.36
1959 1011.50 907.76 c 739.00 419.00 296.50 35.50 3.50 3.00 210.50 460.50 851.90 a 1156.50 6095.16
1960 1288.50 974.50 612.00 422.88 d 232.50 7.00 0.00 11.50 24.00 394.50 731.50 1092.50 5791.38
1961 1112.00 756.00 717.50 481.50 230.90 b 27.00 0.00 0.00 230.00 510.00 934.14 a 1102.00 6101.03
1962 1386.50 892.50 909.00 399.23 d 316.50 99.00 0.00 11.50 71.00 413.00 695.50 1161.50 6355.23
1963 1314.00 764.50 829.00 576.00 122.00 94.50 0.00 2.07 a 45.00 261.00 720.50 1206.00 5934.57
1964 1234.00 1127.00 966.50 550.00 305.00 120.00 b 0.52 a 28.00 150.00 352.50 1031.79 b 936.50 6801.80
1965 979.60 a 884.50 829.50 477.50 379.50 110.00 0.00 9.50 254.48 a 409.50 644.50 1054.50 6033.08
1966 1193.50 970.00 777.00 484.66 a 181.00 67.00 0.00 11.00 108.50 481.50 693.00 1145.00 6112.16
1967 1290.00 835.50 658.50 632.68 b 311.55 a 137.50 0.00 0.00 116.50 410.50 668.28 a 1372.00 6433.00
1968 1231.50 740.50 701.50 595.00 292.50 66.50 4.81 b 59.33 b 207.50 459.32 a 804.50 1177.50 6340.45
1969 903.50 882.00 873.50 493.00 120.00 98.00 2.50 0.00 c 45.50 619.00 858.00 1010.00 5905.00
1970 1043.50 746.00 819.50 654.50 260.50 96.50 3.50 0.00 253.00 593.50 730.50 1097.00 6298.00
1971 1069.00 937.00 791.50 541.00 318.00 74.50 0.00 1.00 241.00 584.00 875.50 1190.50 6623.00
1972 1082.00 834.50 605.50 488.00 271.50 8.50 1.00 16.50 151.00 455.50 863.00 0.00 z 4777.00
1973 1521.00 899.00 841.00 595.00 242.50 103.50 0.00 9.50 183.50 442.78 a 758.00 1011.50 6607.28
1974 1251.50 950.00 620.00 582.50 180.00 49.50 2.00 13.50 152.50 472.50 797.50 1183.50 6255.00
1975 1286.00 908.50 804.00 687.50 399.00 111.50 0.00 18.50 146.50 486.00 892.50 1083.50 6823.50
1976 1206.50 836.00 932.00 557.50 182.50 89.50 0.00 9.50 112.00 558.50 795.00 a 1192.00 6471.00
1977 1218.50 896.00 903.00 441.00 344.00 9.50 0.00 15.50 110.50 423.00 749.50 876.00 5986.50
1978 954.50 756.50 581.00 494.00 346.50 63.50 6.00 34.50 201.50 388.00 890.00 1282.50 5998.50
1979 1357.00 952.00 763.50 500.00 272.50 87.50 1.00 7.00 60.00 383.50 963.50 1044.00 6391.50
1980 984.00 785.50 842.00 487.00 360.00 83.50 0.00 15.50 124.00 517.00 760.50 920.00 5879.00
1981 1078.50 818.00 749.50 408.50 305.50 61.50 0.00 3.00 63.00 519.00 686.00 999.00 5691.50
1982 1151.00 911.50 733.00 543.50 289.50 95.00 20.50 0.00 155.00 585.50 866.50 1147.00 6498.00
1983 1013.00 755.00 691.00 649.50 387.00 86.00 14.00 1.50 94.00 431.00 781.00 1034.00 5937.00
1984 1393.50 1128.00 816.50 584.50 176.50 93.50 0.00 0.00 133.00 610.00 801.50 1245.00 6982.00
1985 1190.00 1076.50 787.50 411.00 186.00 46.00 0.00 7.50 233.50 475.00 890.00 1372.50 6675.50
1986 955.00 704.00 560.00 472.50 272.00 29.50 0.00 0.00 250.00 523.50 755.00 1098.00 5619.50
1987 1274.50 864.00 788.50 376.00 205.00 15.50 11.50 6.50 147.00 388.50 841.50 1192.00 6110.50
1988 1458.50 1081.50 789.00 429.50 294.50 32.50 0.00 0.50 172.50 307.50 763.00 1348.50 6677.50
1989 1554.00 1115.50 568.00 350.50 250.50 81.50 0.00 15.50 126.50 491.00 817.50 1157.00 6527.50
1990 1049.00 1061.00 629.00 390.50 259.50 46.50 0.00 3.50 75.00 411.50 846.50 1492.00 6264.00
1991 1445.00 864.00 753.00 562.00 332.00 62.50 1.50 0.00 134.00 428.00 810.50 1247.00 6639.50
1992 1223.00 744.50 621.50 307.00 151.00 50.00 12.50 29.50 104.00 376.00 919.00 1236.50 5774.50
1993 1097.50 908.00 649.00 516.00 191.00 114.50 13.50 8.00 166.00 491.00 934.50 1108.50 6197.50
1994 1023.50 864.50 653.50 454.00 188.00 22.50 2.50 0.00 102.50 507.50 1040.50 1070.00 5929.00
1995 960.00 678.00 674.00 546.50 347.00 159.00 7.50 0.00 123.50 487.50 692.00 1017.00 5692.00
1996 1029.00 811.50 678.00 494.50 200.00 16.00 0.00 1.50 176.50 523.00 738.50 984.50 5653.00
1997 1098.50 906.50 639.00 552.00 213.00 34.50 20.50 0.00 109.50 472.50 732.00 1167.00 5945.00
1998 915.50 820.00 735.50 568.00 306.50 148.00 0.00 0.00 94.00 522.00 718.50 1264.00 6092.00
1999 945.00 767.50 664.00 617.00 307.00 89.50 0.00 0.00 154.50 439.00 664.00 1128.50 5776.00
2000 913.98 a 723.50 720.00 352.50 155.00 a 38.00 3.50 0.00 114.50 455.00 1035.50 1033.50 5544.98
2001 1144.00 828.00 626.50 428.50 178.00 55.00 0.00 0.00 58.00 403.50 723.89 c 1184.00 5629.39
2002 1070.50 940.00 819.50 381.00 257.00 47.50 0.00 3.00 125.50 547.50 863.00 1024.00 6078.50
2003 886.00 947.00 649.50 478.50 249.50 48.00 0.00 0.00 142.50 323.50 864.00 998.00 5586.50
2004 1312.50 1029.00 545.00 436.00 204.00 14.50 0.00 14.00 163.50 434.50 856.50 1063.00 6072.50
2005 980.50 773.00 719.50 519.00 222.50 131.50 0.00 8.00 156.50 449.50 784.00 1045.50 5789.50
2006 1061.00 931.00 793.50 428.00 163.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3376.50
Period of Record Statistics
MEAN 1142.75 886.61 741.34 496.28 257.20 69.61 2.69 7.57 134.15 459.62 820.86 1123.75 6157.43
S.D. 177.14 125.97 105.65 85.75 77.21 38.90 5.05 10.75 57.09 75.23 102.91 127.09 373.29
SKEW 0.34 0.68 0.19 0.07 0.45 0.28 2.25 2.58 0.37 -0.02 0.39 0.43 0.32
MAX 1554.00 1251.50 976.50 687.50 489.91 159.00 20.50 59.33 254.48 619.00 1040.50 1492.00 6982.00
MIN 831.50 678.00 545.00 307.00 120.00 7.00 0.00 0.00 24.00 261.00 644.50 876.00 5544.98
NO YRS 55 54 54 53 56 55 54 55 55 54 55 54 49