BOULDER, UTAH

Monthly Total Heating Degree Days

(420849)

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
1954 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 28.50 k 1.50 16.03 b 136.00 421.50 725.50 1198.00 2498.53
1955 1298.00 1218.50 903.00 661.00 374.50 153.00 6.50 2.67 b 128.50 362.00 842.50 978.50 6928.67
1956 941.50 1027.43 a 796.50 571.50 253.00 17.00 4.59 d 12.29 b 37.00 431.00 913.00 1075.18 a 6080.00
1957 1208.00 822.00 797.73 a 649.50 442.50 106.55 a 4.50 43.50 128.00 536.41 c 979.00 1048.50 6766.20
1958 1124.00 794.50 1012.48 c 636.50 209.00 62.07 a 9.00 1.03 a 138.10 a 388.00 814.00 885.57 a 6074.25
1959 1135.00 988.00 833.50 514.82 b 348.75 a 31.50 1.07 b 13.50 233.79 a 441.50 795.00 b 1074.50 6410.93
1960 1363.50 1156.00 749.50 550.50 305.50 34.00 0.00 a 16.03 b 63.50 529.00 806.90 a 1132.50 6706.93
1961 1126.00 837.50 879.88 a 555.00 b 312.58 a 24.11 b 2.67 b 13.00 304.20 e 485.50 874.50 1279.00 6693.95
1962 1156.50 889.50 985.50 412.00 376.00 120.52 a 7.75 a 19.63 a 111.50 407.00 668.00 994.00 6147.90
1963 1330.50 748.50 894.00 661.00 188.00 127.76 a 0.00 b 22.00 71.50 299.50 747.50 1077.00 6167.26
1964 1243.00 1059.50 1001.50 644.00 368.50 117.50 0.00 24.80 a 132.00 282.00 911.00 1085.00 6868.80
1965 1021.00 914.00 913.50 657.00 427.50 170.50 0.00 35.00 259.00 302.00 687.50 1113.50 6500.50
1966 1249.50 1110.00 757.00 529.82 b 198.92 a 74.00 1.00 10.50 111.50 411.00 675.00 1121.00 6249.24
1967 1173.50 879.41 a 715.50 716.50 380.00 187.00 0.50 1.50 114.50 349.00 698.00 1269.50 6484.91
1968 1278.50 833.75 a 757.50 678.00 340.00 88.50 3.00 89.50 181.00 431.50 840.00 1255.00 6776.25
1969 1074.50 1026.50 945.00 524.00 199.50 132.50 2.00 4.00 72.50 634.00 834.00 1012.50 6461.00
1970 1090.00 778.00 882.50 744.31 a 273.50 135.50 2.00 1.50 205.50 585.50 820.00 1165.50 6683.81
1971 1119.00 936.00 853.00 587.00 428.50 103.50 1.50 8.00 227.00 576.00 921.50 1258.50 7019.50
1972 1100.00 829.50 562.00 513.50 267.50 45.00 0.00 29.00 148.00 530.00 953.50 1262.50 6240.50
1973 1382.50 1002.50 989.50 673.00 288.50 122.50 2.50 5.50 146.00 393.50 828.50 1066.00 6900.50
1974 1368.00 1081.50 702.50 626.00 189.00 37.00 2.00 7.50 139.66 a 418.50 808.00 1174.50 6554.16
1975 1166.00 982.00 933.00 810.00 435.50 126.72 a 5.50 20.50 105.00 474.00 876.00 1071.50 7005.72
1976 1133.50 833.00 915.50 606.50 273.00 111.50 5.00 15.50 152.50 472.00 701.00 1038.50 6257.50
1977 1192.00 790.00 942.50 463.50 472.00 15.00 2.50 10.50 138.00 360.12 a 736.00 910.50 6032.62
1978 1095.00 958.50 700.50 577.50 384.00 49.00 3.50 17.50 186.00 292.50 842.50 1333.00 6439.50
1979 1429.50 1069.50 905.50 563.50 344.00 106.00 3.50 51.00 30.00 320.00 957.00 1045.50 6825.00
1980 1107.50 874.00 945.00 549.00 444.00 81.50 4.50 29.50 112.50 450.00 735.50 819.50 6152.50
1981 921.00 812.50 863.00 431.50 367.35 a 54.50 0.00 35.00 98.50 566.50 722.50 987.00 5859.35
1982 1163.50 986.00 850.50 625.00 337.50 115.00 28.50 20.00 175.00 593.50 898.50 1126.50 6919.50
1983 1089.00 961.50 833.00 766.00 385.00 118.00 5.00 5.50 110.00 412.50 831.50 1095.50 6612.50
1984 1192.50 982.00 829.00 648.50 174.00 114.50 0.00 11.00 98.00 618.50 831.50 1133.00 6632.50
1985 1194.50 1027.00 850.50 441.00 312.00 65.50 6.00 3.00 266.00 448.50 892.00 993.00 6499.00
1986 908.00 818.00 628.50 568.50 293.50 34.00 17.50 4.50 298.50 545.00 782.00 1058.50 5956.50
1987 1206.00 923.50 876.50 435.50 311.50 23.50 19.50 17.00 90.50 324.00 849.00 1155.50 6232.00
1988 1226.00 895.50 839.50 531.00 327.50 35.00 0.00 6.00 187.50 216.00 803.00 1096.00 6163.00
1989 1268.00 1005.00 624.00 366.00 292.00 66.00 0.00 25.00 103.50 453.50 696.50 974.00 5873.50
1990 1103.00 905.50 699.00 434.50 341.50 54.00 1.50 18.50 97.50 417.00 785.50 1315.50 6173.00
1991 1251.50 783.50 914.00 638.00 385.50 75.50 2.50 5.00 89.50 324.50 821.00 1169.00 6459.50
1992 1223.50 887.50 757.00 346.00 229.00 79.00 26.00 36.00 76.00 310.50 916.50 1249.00 6136.00
1993 1132.00 976.00 708.00 530.50 97.50 k 130.00 9.00 14.50 113.00 475.00 895.00 1113.50 6096.50
1994 968.00 969.00 624.50 478.00 240.50 10.00 0.00 2.00 73.50 466.00 949.50 1060.00 5841.00
1995 1120.50 635.00 741.50 579.50 424.00 142.50 15.50 0.00 93.00 354.00 578.50 886.50 5570.50
1996 968.00 737.50 684.00 450.50 181.50 11.00 0.00 0.00 183.00 486.50 776.50 1019.50 5498.00
1997 1091.50 913.50 617.00 587.00 176.00 59.50 4.50 12.00 100.50 463.50 770.00 1094.00 5889.00
1998 962.50 978.50 773.50 632.00 351.50 154.50 0.00 0.00 103.00 497.00 779.00 1014.00 6245.50
1999 887.00 784.50 627.50 680.00 319.00 114.50 3.50 6.50 145.00 280.00 610.00 1004.00 5461.50
2000 932.50 804.50 753.00 394.00 209.50 31.00 11.50 14.00 115.50 499.00 1004.50 1010.50 5779.50
2001 1161.00 927.50 759.50 575.50 211.50 58.00 3.50 9.00 37.00 312.50 706.50 1142.50 5904.00
2002 1098.50 889.50 810.50 362.00 237.50 24.00 0.00 4.00 154.00 513.50 802.50 1086.50 5982.50
2003 822.00 897.00 729.00 586.00 273.50 35.00 0.00 1.50 88.50 235.50 892.00 1049.00 5609.00
2004 1149.00 1066.00 552.50 498.00 227.50 31.50 1.50 16.00 172.50 516.50 695.00 f 1043.00 5274.00
2005 973.50 848.00 767.00 557.50 291.18 c 115.00 0.00 2.00 113.50 417.00 719.50 1025.00 5829.18
2006 1035.50 840.00 889.00 492.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3256.50
Period of Record Statistics
MEAN 1133.73 917.18 805.28 563.63 308.47 80.99 4.46 15.17 134.52 429.40 809.88 1089.33 6297.02
S.D. 134.53 115.09 117.26 105.40 82.51 47.13 6.39 15.79 61.96 101.12 95.35 110.75 419.00
SKEW -0.09 0.23 -0.26 -0.07 0.05 0.23 2.26 2.38 0.94 -0.04 -0.16 0.14 -0.07
MAX 1429.50 1218.50 1012.48 810.00 472.00 187.00 28.50 89.50 304.20 634.00 1004.50 1333.00 7019.50
MIN 822.00 635.00 552.50 346.00 174.00 10.00 0.00 0.00 30.00 216.00 578.50 819.50 5461.50
NO YRS 52 52 52 52 50 51 52 52 52 52 51 52 49