OLMSTEAD POWERHOUSE, UTAH

Monthly Total Growing Degree Days

(426455)

Base Temperature = 40 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 45.00 364.50 413.50 953.00 1087.50 1021.00 751.50 471.00 138.00 30.50 5275.50
1978 0.00 24.37 a 193.00 253.50 466.00 867.00 e 1080.19 b 959.00 654.50 481.50 76.55 a 0.00 5055.61
1979 0.00 1.00 53.50 287.50 548.00 840.50 1111.00 1000.00 880.50 472.50 37.00 26.00 5257.50
1980 13.00 28.50 35.50 325.50 454.00 830.00 1090.50 942.00 687.50 368.50 144.50 32.00 4951.50
1981 6.50 53.00 62.00 357.50 409.50 827.50 1087.00 1088.00 805.00 285.50 187.00 53.00 5221.50
1982 0.50 43.00 66.50 209.00 481.50 779.50 1026.00 1100.50 666.00 252.50 25.00 11.00 4661.00
1983 8.50 23.00 84.50 156.50 431.00 768.00 1002.00 1075.50 774.00 465.50 138.50 6.00 4933.00
1984 0.00 0.00 23.50 210.00 648.50 748.00 1052.00 1026.00 661.00 217.00 68.00 0.00 4654.00
1985 0.00 0.00 82.00 422.00 648.00 886.00 1088.00 997.17 a 586.50 369.50 56.00 0.50 5135.67
1986 16.50 114.00 289.50 317.00 573.00 970.00 1010.00 1073.00 584.50 417.50 124.50 23.00 5512.50
1987 14.50 43.50 125.00 505.00 680.50 917.00 1037.00 1006.50 782.00 534.50 136.50 45.50 5827.50
1988 1.00 36.00 128.50 387.00 615.50 1015.50 1206.00 1093.50 679.00 618.00 137.50 0.00 5917.50
1989 0.50 36.00 219.00 437.00 650.00 807.00 1208.00 1048.50 795.00 466.00 115.50 6.00 5788.50
1990 24.00 6.00 198.50 443.00 573.50 894.50 1142.00 1068.50 917.50 404.50 123.00 5.50 5800.50
1991 0.00 43.00 91.50 0.00 z 497.50 809.50 1130.50 1074.50 731.50 481.00 84.00 0.00 4943.00
1992 0.00 46.50 233.50 518.00 737.50 838.50 990.50 1061.00 767.00 520.00 36.50 6.00 5755.00
1993 2.00 3.50 144.00 264.00 683.50 693.00 900.00 943.00 722.50 405.50 42.50 32.50 4836.00
1994 26.50 29.00 238.50 376.00 721.00 985.50 1199.00 1170.50 844.50 363.50 60.00 5.50 6019.50
1995 18.00 140.00 166.00 243.00 426.50 711.00 1019.50 1097.00 822.50 414.50 231.50 63.00 5352.50
1996 20.50 16.00 167.00 283.50 606.00 940.50 1159.50 1100.00 706.00 426.00 145.50 37.00 5607.50
1997 23.50 9.00 253.50 257.00 696.00 818.00 1028.50 1055.50 774.00 381.50 78.50 2.50 5377.50
1998 13.50 22.00 163.00 269.00 592.00 660.50 1161.50 1049.87 a 843.00 404.50 166.00 51.50 5396.37
1999 14.50 43.50 240.50 219.64 b 529.50 847.00 1131.50 1081.00 652.76 a 480.00 257.59 a 7.50 5504.99
2000 67.50 73.50 153.00 435.50 683.50 885.50 1177.50 1144.50 746.38 a 402.50 10.00 0.00 5779.38
2001 0.00 19.00 195.50 297.50 727.00 930.50 1172.50 1197.50 892.50 528.00 234.31 a 0.00 6194.31
2002 5.50 13.00 103.00 404.50 648.00 930.00 900.00 i 992.50 680.50 319.00 32.00 0.00 z 4128.00
2003 37.00 32.00 174.00 306.50 685.00 751.50 1261.00 1241.50 0.00 z 0.00 z 0.00 z 0.00 z 4488.50
Period of Record Statistics
MEAN 12.06 34.55 145.52 328.81 586.13 848.31 1098.41 1063.24 746.45 421.15 111.00 17.78 5414.75
S.D. 15.38 32.99 74.63 95.19 106.30 91.65 83.65 71.86 89.42 90.13 67.97 19.93 436.49
SKEW 1.96 1.74 0.06 0.28 -0.32 -0.17 -0.20 0.44 0.07 -0.28 0.49 0.86 -0.14
MAX 67.50 140.00 289.50 518.00 737.50 1015.50 1261.00 1241.50 917.50 618.00 257.59 63.00 6194.31
MIN 0.00 0.00 23.50 156.50 409.50 660.50 900.00 942.00 584.50 217.00 10.00 0.00 4654.00
NO YRS 26 26 27 26 27 27 26 27 26 26 26 25 23