OLMSTEAD POWERHOUSE, UTAH

Monthly Total Heating Degree Days

(426455)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200308
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
1977 0.00 z 0.00 z 900.00 416.50 366.50 1.50 0.00 15.00 89.50 307.50 692.50 928.00 3717.00
1978 1034.00 824.44 a 621.50 498.50 326.50 22.20 e 1.07 b 34.00 161.00 293.50 861.21 a 1238.00 5915.92
1979 1356.50 933.50 784.50 492.00 254.50 73.00 0.00 4.00 10.50 318.50 896.50 928.50 6052.00
1980 1044.50 881.00 832.00 436.00 331.50 58.00 0.00 26.00 102.50 419.50 755.00 959.50 5845.50
1981 1057.50 821.00 752.00 402.00 371.50 69.00 0.00 1.50 37.50 497.50 630.50 924.50 5564.50
1982 1220.50 966.50 790.50 597.00 298.50 84.00 10.50 0.00 170.00 530.00 842.50 1120.50 6630.50
1983 949.00 810.00 753.00 639.50 393.00 76.50 13.50 0.00 63.00 309.50 764.00 1114.50 5885.50
1984 1383.00 1161.00 856.50 570.50 183.00 104.50 0.00 0.00 153.50 620.50 767.50 1152.50 6952.50
1985 1269.00 1081.00 789.50 328.00 144.00 36.00 0.00 0.00 a 187.00 406.00 822.00 1250.00 6312.50
1986 1020.00 696.50 496.00 436.00 238.50 13.50 0.00 0.00 198.00 357.50 676.00 949.50 5081.50
1987 1131.00 766.00 701.00 263.50 127.00 11.50 2.50 6.50 48.50 245.50 688.00 1029.00 5020.00
1988 1160.50 874.50 729.00 364.00 216.50 8.50 0.00 0.00 162.50 166.00 741.00 1131.50 5554.00
1989 1259.50 1031.50 595.50 322.00 164.50 49.00 0.00 5.00 36.00 323.50 702.00 1013.50 5502.00
1990 1006.00 955.50 609.00 310.00 211.50 43.00 0.00 0.00 21.00 373.00 698.00 1286.50 5513.50
1991 1201.00 730.50 717.50 0.00 z 283.50 39.00 0.50 0.00 84.00 343.00 784.00 1089.00 5272.00
1992 1099.50 723.50 542.00 243.50 74.00 38.50 14.50 13.50 47.00 265.50 927.50 1146.00 5135.00
1993 1162.50 971.00 702.50 489.50 160.50 128.00 16.00 3.00 84.50 386.00 845.50 994.50 5943.50
1994 893.50 854.00 544.00 395.00 102.50 10.50 5.00 0.00 32.00 416.00 902.00 988.00 5142.50
1995 992.00 598.50 649.50 515.50 352.50 103.00 5.00 0.00 64.00 362.50 543.50 896.50 5082.50
1996 972.00 869.00 652.50 472.00 203.00 10.50 0.00 0.00 131.50 398.00 665.50 954.00 5328.00
1997 1073.00 916.00 569.00 538.50 121.00 31.50 6.00 0.00 77.00 411.00 720.50 1100.00 5563.50
1998 871.00 779.00 697.00 484.50 189.50 130.50 0.00 0.00 a 35.50 370.50 623.00 1061.50 5242.00
1999 881.50 755.00 560.00 551.79 b 282.50 67.50 0.00 0.00 116.38 a 297.00 542.07 a 1000.50 5054.23
2000 868.50 712.50 635.00 320.00 167.50 24.50 0.00 0.00 80.69 a 374.00 934.00 970.50 5087.19
2001 1050.50 793.00 598.00 460.50 123.50 45.50 0.00 0.00 25.00 259.50 585.52 a 1069.50 5010.52
2002 1064.00 920.50 806.50 348.00 185.00 35.00 0.00 i 0.00 112.00 462.50 816.50 0.00 z 4750.00
2003 815.50 855.50 643.50 459.00 197.00 87.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 3057.50
Period of Record Statistics
MEAN 1070.60 856.94 686.19 436.66 224.78 51.90 2.87 4.02 89.62 365.90 747.17 1051.84 5583.43
S.D. 150.71 126.94 106.30 103.40 90.54 36.82 5.05 8.54 55.67 95.10 113.16 109.00 538.82
SKEW 0.32 0.36 0.15 -0.05 0.33 0.61 1.62 2.42 0.45 0.54 -0.08 0.55 0.95
MAX 1383.00 1161.00 900.00 639.50 393.00 130.50 16.00 34.00 198.00 620.50 934.00 1286.50 6952.50
MIN 815.50 598.50 496.00 243.50 74.00 1.50 0.00 0.00 10.50 166.00 542.07 896.50 5010.52
NO YRS 26 26 27 26 27 27 26 27 26 26 26 25 23