COUNCIL, IDAHO

Monthly Total Heating Degree Days

(102187)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.50 18.00 232.50 0.00 z 742.00 g 1178.00 1449.00
1912 1332.50 994.50 903.50 564.00 277.00 69.00 52.04 c 45.47 a 270.00 570.00 760.00 965.00 g 5838.00
1913 1378.00 1223.00 1052.50 546.50 281.00 93.21 b 46.50 8.02 b 170.19 d 618.00 783.10 a 1180.14 b 7380.17
1914 908.00 g 1067.11 a 756.50 217.00 o 225.30 c 190.00 11.37 a 10.33 a 247.00 439.50 755.89 b 1042.50 f 3703.01
1915 1229.84 b 789.70 a 0.00 z 318.00 382.00 173.50 48.50 0.00 206.00 439.50 949.00 1199.00 5735.05
1916 1403.27 a 1009.00 847.00 517.50 464.50 196.50 41.50 35.00 183.00 582.50 955.50 1353.50 7588.77
1917 1460.50 1131.00 1229.50 746.00 405.00 198.00 3.00 1.00 100.00 447.50 688.50 786.50 7196.50
1918 1067.00 1041.00 782.50 557.50 369.00 40.00 14.00 81.50 86.00 450.00 852.50 1211.00 6552.00
1919 1195.00 967.50 858.00 463.00 317.00 104.00 4.00 4.50 139.00 673.00 0.00 z 0.00 z 4725.00
1920 1323.00 1007.50 879.50 699.00 396.50 155.00 2.00 54.50 184.50 614.50 880.50 1120.50 7317.00
1921 1154.00 1013.50 831.00 674.00 304.50 65.50 28.50 1.00 337.00 390.00 746.50 1064.00 6609.50
1922 1502.50 1089.00 1018.50 705.50 368.50 32.00 3.00 11.00 116.50 412.50 876.00 1225.50 7360.50
1923 1141.50 987.50 959.50 581.50 342.00 198.00 8.78 a 3.00 117.00 541.00 760.00 1174.50 6814.28
1924 1388.50 824.00 865.00 527.50 150.50 100.00 8.00 19.00 167.50 483.50 847.50 1378.50 6759.50
1925 1175.50 884.59 a 768.36 c 462.50 177.00 153.50 0.00 49.00 170.50 494.00 824.50 1091.50 6250.95
1926 1304.00 849.00 671.00 335.50 323.50 81.50 1.00 15.00 305.00 441.75 a 726.50 1232.77 a 6286.52
1927 1245.50 961.00 855.00 577.00 420.00 64.00 6.00 26.50 253.00 507.50 739.50 1444.50 7099.50
1928 1266.35 a 1151.00 828.00 613.50 137.50 140.00 13.00 11.50 130.50 551.00 844.50 1334.00 7020.85
1929 1541.50 1237.50 870.50 661.00 336.50 182.00 2.50 0.00 293.50 493.00 895.50 995.00 7508.50
1930 1604.00 878.50 760.00 375.00 371.50 144.50 1.00 4.00 168.50 569.50 1003.00 1530.88 a 7410.38
1931 1310.50 1116.50 888.50 516.00 220.50 61.00 2.00 0.00 212.00 455.50 1010.50 1373.50 7166.50
1932 1393.45 a 1231.50 940.00 538.50 301.50 92.50 10.00 44.50 105.50 525.50 809.50 1363.00 7355.45
1933 1237.50 1360.50 999.00 600.50 428.50 46.50 1.50 28.50 216.00 323.90 b 738.00 910.50 6890.90
1934 915.00 657.00 562.00 302.50 159.50 113.00 2.50 1.00 234.00 404.00 694.50 1181.50 5226.50
1935 1244.50 1082.00 946.50 587.50 337.00 96.50 19.00 20.00 81.00 467.00 969.00 1232.50 7082.50
1936 1230.50 1249.00 987.00 456.50 189.50 98.00 1.00 6.50 183.50 368.00 859.00 1055.00 6683.50
1937 1660.50 1117.50 831.00 611.00 237.50 134.00 5.00 40.00 135.50 385.00 737.31 d 962.50 6856.81
1938 1058.50 834.00 823.50 485.00 331.00 71.38 a 31.00 23.50 56.00 420.50 0.00 z 0.00 z 4134.38
1939 0.00 z 0.00 z 0.00 z 383.50 199.00 184.00 8.50 1.50 130.50 491.00 742.00 863.50 3003.50
1940 1108.50 910.50 711.50 511.50 185.50 60.50 5.00 0.00 z 163.00 426.00 951.00 1031.78 a 6064.78
1941 1078.50 869.04 a 672.50 497.50 325.50 a 158.79 a 0.50 50.00 282.32 b 503.00 759.00 1058.50 6255.15
1942 1344.00 1039.00 907.50 475.50 0.00 z 0.00 z 0.00 35.98 c 99.00 406.00 851.79 b 1054.00 b 6212.77
1943 1263.50 991.50 956.50 392.59 a 365.50 165.00 16.57 b 30.00 46.50 414.00 776.50 1033.50 6451.65
1944 1247.00 939.50 869.00 522.50 243.00 161.90 a 17.50 8.00 135.50 260.00 845.00 1153.50 6402.40
1945 1142.00 839.50 801.50 559.50 261.50 188.50 13.00 20.50 271.50 366.00 875.00 1119.50 6458.00
1946 1224.00 1032.00 790.50 415.50 240.50 80.00 8.50 1.50 218.28 a 649.97 a 859.00 961.00 6480.74
1947 1316.00 835.50 659.00 476.50 155.50 187.00 0.00 23.50 168.50 405.00 901.07 b 1077.77 a 6205.34
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 31.00 164.00 438.00 902.50 1411.00 2946.50
1949 1735.50 1066.00 785.00 393.50 187.00 115.00 7.00 0.00 103.50 613.59 b 663.00 1124.00 6793.09
1950 1370.09 c 1033.50 899.00 572.50 374.00 148.00 8.00 12.00 181.00 416.50 767.00 943.50 6725.09
1951 1231.50 945.50 981.00 441.00 293.00 161.00 8.50 43.50 134.00 502.31 d 837.50 1200.00 6778.81
1952 1288.00 1277.00 1063.00 253.50 l 252.50 113.00 16.00 8.00 67.50 375.50 923.50 1142.00 6526.00
1953 905.00 603.00 g 0.00 z 533.00 386.00 157.00 3.00 15.00 81.50 406.00 696.50 1143.00 4326.00
1954 1062.50 795.00 826.00 520.50 216.00 200.00 8.50 42.00 139.50 507.50 711.50 1340.50 6369.50
1955 1379.00 1191.00 1110.50 706.00 349.00 86.00 55.50 0.00 195.50 471.00 1013.50 1065.50 7622.50
1956 1118.50 1197.00 811.00 453.00 217.50 124.00 7.00 34.50 125.00 531.00 911.00 1164.50 6694.00
1957 1526.50 1018.50 781.00 496.50 202.00 87.00 1.50 6.00 72.00 486.00 896.00 1089.50 6662.50
1958 1232.00 840.50 795.00 564.00 142.50 72.41 a 9.50 5.50 196.11 c 457.50 916.50 1018.00 6249.52
1959 1180.50 962.00 878.50 474.11 b 409.00 66.00 15.50 24.50 239.50 500.50 929.50 1160.50 6840.11
1960 1329.50 1111.50 875.00 492.50 383.00 57.50 0.00 99.50 87.00 0.00 z 0.00 z 285.50 x 4435.50
1961 1157.00 764.50 718.50 536.50 235.50 6.00 0.00 0.00 265.00 535.50 933.00 1197.50 6349.00
1962 1530.62 c 1052.00 891.25 e 408.50 349.55 b 87.50 15.00 33.58 a 112.24 a 493.42 a 761.50 998.00 6733.17
1963 1312.33 a 679.00 332.50 o 586.50 222.00 145.00 2.67 b 0.00 59.50 367.50 816.50 1270.50 5461.51
1964 1352.00 1345.00 1107.22 a 609.00 368.38 a 143.00 6.50 76.00 199.66 a 449.00 872.00 1107.50 7635.26
1965 1187.00 999.25 d 441.50 p 459.50 343.00 77.00 11.50 38.50 280.50 406.50 773.00 1130.50 5706.25
1966 1091.00 982.00 577.00 g 514.00 223.50 143.50 14.50 19.50 43.00 553.00 751.00 1089.50 5424.50
1967 1072.50 387.00 o 313.50 r 645.50 328.50 117.50 0.00 1.50 53.50 538.00 754.50 758.50 m 3511.50
1968 1307.37 e 892.00 676.46 c 606.50 316.20 a 76.67 c 1.50 75.50 152.00 509.50 825.00 1109.00 6547.70
1969 1214.00 1108.00 1018.50 460.00 169.00 114.00 23.50 8.50 123.00 611.00 804.50 1009.00 6663.00
1970 1022.50 794.00 808.50 670.50 268.00 96.00 5.00 0.00 271.50 568.50 768.00 1192.50 6465.00
1971 1164.50 960.00 914.00 519.50 179.50 152.50 16.50 1.00 243.00 503.23 a 911.00 1240.00 6804.73
1972 1289.00 1018.50 675.50 571.50 211.00 56.00 17.00 3.00 274.50 393.00 800.00 1295.80 a 6604.80
1973 1231.45 b 912.80 c 736.00 478.00 235.00 111.50 4.50 5.00 140.50 478.00 833.50 1054.52 a 6220.76
1974 1258.08 a 911.50 765.00 482.22 c 342.07 b 60.50 22.73 a 6.50 79.29 b 398.00 751.50 1111.00 6188.39
1975 1305.00 1037.50 873.00 680.00 340.50 113.50 3.50 46.50 57.50 477.50 875.50 1131.00 6941.00
1976 1184.00 1126.50 1081.00 525.50 166.00 140.00 1.00 54.00 68.00 492.50 757.00 1112.50 6708.00
1977 1411.00 831.00 807.50 332.50 416.50 8.50 14.50 56.50 180.00 a 444.00 855.00 978.50 6335.50
1978 1021.00 789.00 568.50 499.00 360.00 86.00 5.50 51.50 201.00 389.00 890.00 1375.50 6236.00
1979 1625.00 1025.50 762.50 523.50 253.00 74.00 16.00 2.00 44.50 359.50 920.50 1048.00 6654.00
1980 1139.25 a 829.50 789.50 433.50 254.50 171.00 5.50 45.00 141.72 a 465.00 819.00 1059.00 6152.47
1981 1002.00 875.50 667.53 a 502.50 d 305.00 142.50 20.50 1.50 133.50 569.07 c 741.43 b 1022.00 5983.03
1982 1318.50 1163.00 795.00 640.56 c 326.65 d 106.00 40.00 1.00 174.00 536.00 514.00 n 1180.07 a 6280.77
1983 1074.00 859.00 665.00 277.00 p 162.00 p 76.00 55.00 6.00 159.50 430.38 a 436.00 l 906.50 j 3324.88
1984 924.00 j 840.50 i 512.00 l 355.00 l 361.00 176.50 1.50 3.50 221.00 553.35 a 494.50 m 1434.00 2750.85
1985 1554.50 1254.00 1068.00 434.50 226.00 55.50 0.00 29.50 284.50 609.00 1138.00 1595.00 8248.50
1986 1254.00 831.00 586.00 496.00 361.48 c 22.50 30.00 0.00 260.00 473.50 0.00 z 1131.50 5445.98
1987 1344.00 953.00 683.00 295.50 157.00 73.50 31.00 29.50 93.50 372.50 762.41 a 1113.00 5907.91
1988 1378.50 998.50 783.02 b 445.34 a 286.23 a 52.50 6.50 1.50 154.50 212.00 826.50 1338.50 6483.60
1989 591.00 q 1329.00 835.93 b 377.00 86.00 v 0.00 z 0.00 z 0.00 z 81.00 k 545.50 849.00 643.50 l 3936.43
1990 644.00 k 273.50 u 153.50 v 199.50 l 242.00 j 105.00 l 2.50 l 7.50 i 3.50 m 317.50 k 587.50 j 648.50 n 0.00
1991 735.00 l 470.50 i 428.50 k 432.50 167.00 i 103.00 k 5.00 j 1.00 j 59.50 j 343.00 m 357.50 o 621.50 l 432.50
1992 796.50 k 468.00 l 396.00 j 233.00 n 79.50 m 42.00 j 22.50 i 20.50 m 41.50 m 294.00 m 598.00 k 618.00 o 0.00
1993 744.50 n 771.00 j 945.50 b 607.24 a 98.50 l 155.00 i 71.50 k 42.00 i 111.50 i 236.00 l 426.00 p 738.50 j 1552.74
1994 607.00 n 644.00 j 445.00 j 247.50 l 114.00 k 95.50 0.00 m 1.03 a 26.50 k 271.50 m 687.50 j 601.50 o 96.53
1995 713.00 k 412.00 m 510.00 j 303.50 l 168.50 k 125.69 a 4.00 m 37.50 63.50 k 396.00 j 416.00 m 538.50 n 163.19
1996 638.00 n 583.50 l 390.00 m 524.48 a 275.50 i 58.00 k 0.00 l 0.00 z 0.00 z 0.00 z 0.00 z 670.00 l 524.48
1997 396.50 t 307.00 r 0.00 z 0.00 z 127.00 n 37.00 j 22.00 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 9.50 p 232.00 o 330.00 q 103.00 z 0.00
1999 409.50 s 411.50 q 0.00 z 172.00 u 132.00 s 57.50 s 1.00 s 6.50 h 64.00 s 132.50 s 166.00 v 255.00 x 0.00
2000 543.00 p 464.50 m 525.00 i 230.50 j 156.00 k 50.00 k 10.00 m 0.00 h 88.00 k 286.00 l 593.50 l 769.50 k 0.00
2001 834.00 k 648.00 j 517.50 i 397.00 j 197.00 k 60.00 n 9.50 m 0.50 h 43.00 q 278.00 m 395.00 o 667.00 n 0.00
2002 716.50 m 610.00 n 601.50 k 319.50 k 202.50 m 29.00 p 0.00 j 9.00 i 58.50 m 352.50 i 420.00 o 558.50 m 0.00
2003 518.00 o 528.00 k 379.50 m 368.50 i 203.00 l 20.50 n 0.00 k 0.00 l 74.00 p 194.00 l 548.00 m 539.00 n 0.00
2004 592.50 q 572.00 m 395.50 n 188.00 p 142.00 q 47.50 m 0.00 q 24.50 p 96.50 l 159.00 p 495.50 k 618.00 l 0.00
2005 637.50 o 279.00 t 398.50 m 285.00 m 188.50 m 92.50 m 0.00 o 0.00 n 81.00 r 136.00 w 452.00 o 722.50 n 0.00
2006 457.50 r 551.00 m 444.00 o 258.50 n 80.50 o 22.00 q 0.00 q 0.00 s 69.00 q 241.00 o 351.50 q 211.50 y 0.00
2007 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 12.00 157.00 515.50 844.00 910.00 g 1528.50
2008 1119.00 f 1090.00 986.00 681.00 295.00 145.00 0.00 13.50 149.50 494.00 742.50 1206.00 5802.50
2009 1310.00 1077.50 869.50 535.00 284.00 105.00 5.50 f 20.50 15.00 u 462.50 g 867.50 1322.00 6391.00
2010 1074.00 904.00 756.50 578.00 455.00 134.50 14.00 40.50 124.00 364.00 888.00 1195.00 6527.50
2011 1320.50 1076.00 832.00 676.00 389.50 178.00 16.50 2.00 56.50 472.23 a 942.00 1159.73 c 7120.97
2012 1073.78 b 922.00 736.50 437.00 324.00 104.50 0.00 2.14 b 60.56 c 554.79 b 753.00 1071.00 6039.26
2013 1520.50 1020.50 772.93 a 11.00 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 3313.93
Period of Record Statistics
MEAN 1268.51 1000.74 842.92 519.85 291.06 112.67 12.33 20.95 161.69 473.51 834.56 1158.04 6715.92
S.D. 169.05 152.99 132.16 100.31 83.82 48.69 13.78 22.14 73.41 84.56 89.45 149.66 514.11
SKEW 0.39 0.24 0.34 -0.01 -0.06 0.01 1.63 1.21 0.28 -0.18 0.56 0.47 0.28
MAX 1735.50 1360.50 1229.50 746.00 464.50 200.00 55.50 99.50 337.00 673.00 1138.00 1595.00 8248.50
MIN 905.00 657.00 562.00 295.50 137.50 6.00 0.00 0.00 43.00 212.00 663.00 786.50 5226.50
NO YRS 78 79 76 81 79 82 81 85 83 82 77 76 60