HEADQUARTERS, IDAHO

Monthly Total Heating Degree Days

(104150)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201005
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
1959 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 240.00 b 135.62 c 152.50 l 391.61 b 674.50 1023.50 852.50 h 2465.23
1960 1026.50 g 1121.72 d 746.00 g 505.50 g 541.90 e 255.50 45.50 229.40 a 293.33 c 626.72 a 921.00 1196.50 5231.57
1961 1158.88 a 867.50 912.00 738.50 504.00 128.50 63.50 33.50 493.89 c 759.50 b 1079.48 a 1206.50 7945.75
1962 1356.50 1040.50 1063.00 657.50 603.00 320.00 107.50 g 198.92 a 238.50 g 600.37 a 859.00 1072.00 7770.78
1963 1464.00 847.00 936.50 744.50 468.50 311.50 224.15 e 154.48 a 219.44 c 554.00 878.50 1187.50 7990.08
1964 1164.50 1128.00 1068.50 816.00 612.50 277.50 108.00 268.50 485.00 618.97 a 955.00 1229.50 8731.97
1965 1131.00 947.85 a 1052.00 653.00 499.00 222.93 a 81.12 a 134.52 c 529.14 a 570.92 a 825.50 1146.48 a 7793.46
1966 1144.00 1024.50 1024.50 733.00 361.50 281.50 82.00 92.48 a 146.25 b 603.43 b 839.46 b 1033.50 7366.13
1967 1033.50 942.00 1021.00 802.50 536.00 215.50 65.50 45.47 a 180.52 a 662.00 904.50 1214.50 7622.98
1968 1262.00 915.00 819.00 784.00 532.00 271.50 109.00 176.38 b 339.50 704.50 933.00 1271.50 8117.38
1969 1323.50 1076.50 1029.00 684.50 459.00 216.50 148.91 c 151.79 b 336.00 754.85 a 906.50 1122.50 8209.55
1970 1153.50 880.00 982.00 841.03 a 491.50 179.50 81.50 83.50 497.00 707.00 902.78 c 961.00 h 6799.31
1971 1156.00 1020.50 1099.00 772.50 443.62 b 372.00 139.50 62.00 554.50 795.50 1055.00 1266.00 8736.12
1972 1262.00 1034.00 838.66 c 817.00 459.83 a 234.00 125.55 a 64.58 a 476.25 b 642.22 a 908.00 1315.95 a 8178.04
1973 1252.00 961.50 882.50 726.00 444.50 215.77 d 98.34 b 121.50 364.14 a 672.50 1016.50 1054.00 7809.25
1974 1338.00 937.50 1002.50 723.00 607.00 182.50 109.00 123.00 269.00 599.00 858.21 b 1170.00 7918.71
1975 1210.00 1108.50 1097.50 880.50 616.50 383.50 36.00 211.32 a 245.50 f 691.62 b 1027.50 1178.00 8440.94
1976 1184.00 1127.50 1102.50 769.50 497.50 407.00 109.00 149.66 b 262.50 d 669.00 890.00 1203.00 8371.16
1977 1316.50 902.00 982.50 598.00 578.50 132.00 156.66 c 97.00 356.54 d 499.50 g 1015.20 e 651.50 l 6134.90
1978 810.00 h 654.00 g 590.00 g 414.50 j 436.00 i 147.50 h 69.00 m 111.00 i 231.50 l 420.00 j 682.50 k 786.50 m 0.00
1979 1119.50 i 576.50 l 558.00 k 474.50 k 268.00 k 173.50 j 48.00 l 38.50 j 133.00 m 420.00 h 613.50 l 530.50 o 0.00
1980 814.50 l 617.00 j 617.00 k 403.50 i 248.50 j 256.00 f 100.23 a 168.50 j 301.50 612.00 877.22 c 875.50 f 1890.96
1981 1001.00 926.00 805.00 643.97 a 467.07 a 341.00 134.50 52.91 b 292.00 703.00 831.00 1092.48 b 7289.93
1982 1229.00 1069.00 891.00 800.50 523.90 a 143.00 h 142.60 a 74.29 b 0.00 z 664.50 0.00 z 1179.50 6574.29
1983 1022.50 866.44 a 793.00 702.00 446.00 237.50 166.88 a 37.00 g 440.50 447.00 j 872.50 1427.00 6974.33
1984 1231.45 b 999.98 a 630.00 i 368.00 n 414.00 i 199.50 i 46.00 l 66.00 261.50 k 541.00 i 600.00 k 777.50 n 2297.43
1985 938.00 i 702.00 k 662.00 k 438.00 j 262.00 i 141.50 k 6.00 j 117.50 k 313.00 j 508.50 k 710.00 l 815.00 m 0.00
1986 706.50 l 1036.52 a 549.50 k 495.50 i 322.50 k 59.00 k 155.00 i 30.50 j 313.50 i 394.00 k 582.00 l 860.00 j 1036.52
1987 884.00 j 600.50 k 636.00 i 516.72 a 246.00 j 160.50 i 73.00 k 152.50 k 195.00 i 0.00 z 427.50 q 808.00 j 516.72
1988 814.50 l 1048.00 993.55 a 649.00 306.00 k 227.50 157.00 162.50 339.11 b 336.00 k 939.50 1267.50 5783.66
1989 1246.50 1278.00 1019.90 a 674.00 564.50 240.50 51.50 207.00 245.50 i 696.98 a 892.24 a 1149.00 8020.12
1990 1098.50 1133.50 950.00 434.50 i 425.00 i 223.50 j 50.00 j 68.00 i 115.50 k 724.50 635.00 j 673.00 o 3906.50
1991 924.50 i 873.50 704.00 i 432.00 l 373.50 j 249.50 j 72.00 j 59.00 j 199.00 k 509.50 k 438.50 p 574.00 p 873.50
1992 857.50 i 419.00 p 449.00 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1993 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 208.00 i 304.50 195.00 369.00 594.00 1106.00 1126.50 3695.00
1994 1002.50 1031.50 877.50 639.50 401.50 295.00 100.50 95.50 253.50 661.00 1104.00 1167.00 7629.00
1995 1176.00 884.00 929.50 726.50 440.00 327.00 133.50 241.50 287.00 748.00 835.50 1116.00 7844.50
1996 1140.00 1080.00 948.50 677.50 595.50 284.50 96.00 134.50 435.00 688.00 934.50 1160.00 8174.00
1997 1204.00 983.00 939.30 a 796.00 415.00 267.50 171.00 69.50 283.50 687.00 834.50 1133.50 7783.80
1998 1093.00 842.50 893.50 673.50 424.00 287.00 24.00 89.50 202.00 679.00 868.50 1196.00 7272.50
1999 1056.00 964.00 928.00 788.50 582.50 346.50 203.50 78.50 401.00 655.00 771.50 1113.50 7888.50
2000 1142.00 922.50 879.50 621.00 472.00 308.00 146.50 155.50 417.50 665.50 1134.50 1223.50 8088.00
2001 1164.00 1039.50 904.00 746.00 474.50 338.50 121.50 101.50 258.50 691.00 829.00 1187.50 7855.50
2002 1118.50 1035.50 1055.00 767.00 552.00 258.50 94.00 231.00 342.50 800.50 934.00 1063.50 8252.00
2003 1027.00 1005.50 901.00 697.50 523.00 228.00 76.00 73.50 318.00 557.00 1070.00 1110.50 7587.00
2004 1203.00 1015.00 830.00 642.50 379.00 j 218.00 7.50 z 0.00 z 0.00 z 0.00 z 0.00 z 1071.50 4980.00
2005 1102.00 935.00 841.00 702.00 449.50 358.00 96.50 143.50 456.50 633.50 976.50 1307.00 8001.00
2006 1036.50 1105.00 942.00 664.50 430.50 207.00 45.00 152.00 350.50 727.50 929.00 1228.50 7818.00
2007 1361.50 954.00 860.50 685.50 487.00 247.00 16.50 140.50 357.50 694.00 977.00 1196.00 7977.00
2008 1349.50 998.50 1033.00 870.00 523.00 349.50 96.50 o 171.50 380.00 666.00 881.50 1308.50 8531.00
2009 1275.00 1017.50 1123.00 783.00 504.00 269.50 113.50 127.50 237.50 829.00 963.50 1373.50 8616.50
2010 1048.00 899.00 876.00 725.50 141.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3548.50
Period of Record Statistics
MEAN 1180.93 996.02 953.16 723.33 500.86 268.80 113.18 132.34 349.11 673.94 934.02 1185.93 7959.56
S.D. 112.83 93.87 91.15 77.25 64.99 65.50 56.11 60.11 100.02 64.51 89.46 88.25 377.76
SKEW 0.34 0.47 0.12 -0.14 0.14 0.03 0.97 0.38 0.14 0.28 0.56 0.60 0.26
MAX 1464.00 1278.00 1123.00 880.50 616.50 407.00 304.50 268.50 554.50 829.00 1134.50 1427.00 8736.12
MIN 1001.00 842.50 793.00 516.72 361.50 128.50 16.50 33.50 146.25 554.00 771.50 1033.50 7272.50
NO YRS 40 44 40 40 37 39 39 39 37 39 40 38 28