IDAHO CITY, IDAHO

Monthly Total Heating Degree Days

(104442)

Base Temperature = 65 F

File last updated on Jul 24, 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
1931 1213.00 990.00 874.00 624.00 352.00 120.00 36.00 26.50 276.50 518.00 1068.00 1354.50 7452.50
1932 1424.00 1180.50 971.50 630.00 404.00 184.00 50.50 101.50 203.50 628.50 875.50 1341.00 7994.50
1933 1310.00 1347.50 975.00 704.00 550.50 111.00 12.50 74.50 297.50 433.50 783.50 989.00 7588.50
1934 990.50 708.50 625.00 399.00 212.00 171.50 9.50 0.50 306.50 484.00 761.50 1244.50 5913.00
1935 1210.00 1060.50 1024.00 681.00 489.50 210.50 55.50 83.00 150.00 560.50 1030.50 1193.00 7748.00
1936 1278.00 1178.00 1031.00 579.00 262.50 144.50 18.00 42.50 271.50 508.00 936.50 1182.00 7431.50
1937 1723.50 1171.50 899.00 722.50 365.00 236.50 10.50 76.50 169.00 493.00 815.00 1132.50 7814.50
1938 1176.00 935.50 960.00 596.50 462.00 171.00 46.50 57.87 a 85.50 479.00 1072.50 1127.00 7169.37
1939 1188.50 1172.00 878.00 518.50 277.00 269.50 25.50 20.50 204.50 532.00 807.00 942.50 6835.50
1940 1081.50 936.50 761.50 564.00 269.50 112.00 12.50 10.00 213.50 485.00 1011.50 1093.50 6551.00
1941 1103.17 b 898.50 767.00 620.50 350.50 209.00 13.00 68.00 388.50 587.50 855.50 1096.00 6957.17
1942 1392.50 1204.00 983.00 581.00 494.50 269.50 22.14 c 73.22 b 233.50 552.50 893.00 1188.50 7887.37
1943 889.50 k 1055.25 d 1051.50 490.00 475.00 270.00 68.00 77.00 159.00 527.00 856.00 1085.00 6113.75
1944 1301.00 1049.50 1034.00 645.50 388.50 299.50 68.50 72.50 228.00 386.00 890.50 1164.50 7528.00
1945 1142.00 955.50 935.00 716.50 397.00 279.50 30.00 37.00 354.00 493.50 992.00 1263.50 7595.50
1946 1393.50 1176.52 a 954.80 a 574.82 b 419.02 a 224.48 a 13.50 38.50 276.50 766.73 a 956.79 b 1037.50 7832.66
1947 1424.00 920.50 779.50 624.50 273.00 271.50 33.50 85.00 281.50 469.00 1007.00 1152.50 7321.50
1948 1229.50 1119.00 1086.50 683.00 415.00 122.50 82.50 93.00 264.00 540.95 a 1020.50 1495.00 8151.45
1949 1909.50 1182.50 926.50 558.33 c 319.50 196.00 43.29 b 44.50 179.00 704.50 726.00 1267.00 8056.63
1950 1452.50 1056.00 1025.50 702.00 558.50 267.00 74.00 55.50 263.00 466.50 823.00 1015.00 7758.50
1951 1345.00 996.50 1110.50 596.50 426.00 307.50 60.00 103.00 273.00 644.00 950.00 1334.50 8146.50
1952 1371.75 a 1243.00 1114.00 602.50 387.50 216.00 75.00 78.00 183.50 429.00 1011.00 1164.00 7875.25
1953 998.00 985.50 887.50 703.50 547.50 301.50 40.00 70.00 179.50 479.00 732.50 1265.50 7190.00
1954 1178.50 909.00 968.50 597.50 358.50 317.59 a 41.00 155.50 287.50 593.50 754.50 1242.50 7404.09
1955 1422.00 1209.00 1159.00 774.00 489.00 215.00 133.50 36.50 321.00 542.00 1067.59 a 1180.50 8549.09
1956 1210.00 1268.50 1022.50 610.50 351.00 256.00 74.00 129.00 284.00 0.00 z 0.00 z 1188.50 6394.00
1957 1482.50 1021.50 935.00 660.50 358.00 192.93 a 43.50 79.00 210.50 641.50 1027.00 1163.00 7814.93
1958 1285.00 892.50 995.00 718.00 242.50 162.50 45.50 28.00 288.50 504.50 933.00 991.50 7086.50
1959 1133.00 966.00 952.50 603.50 544.00 153.50 58.50 103.50 361.00 595.50 930.50 1175.50 7577.00
1960 1330.00 1177.50 962.50 629.00 498.00 152.00 15.50 139.00 181.50 580.00 922.50 1205.00 7792.50
1961 1149.00 905.50 897.50 678.50 397.00 81.00 7.50 7.00 398.50 651.50 1013.00 1266.50 7452.50
1962 1438.50 1040.50 1049.00 559.00 476.50 200.00 78.50 117.50 227.50 552.00 848.00 1064.00 7651.00
1963 1317.00 776.50 885.50 740.50 364.00 242.00 76.50 72.50 149.50 432.00 896.50 1234.00 7186.50
1964 1337.50 1217.50 1111.50 742.00 478.00 238.50 22.00 140.50 332.50 491.00 979.50 1200.00 8290.50
1965 1172.50 1019.50 1047.50 606.50 480.50 186.50 62.50 98.00 461.50 466.00 803.50 1181.10 a 7585.60
1966 1205.50 1049.00 908.00 631.50 313.50 230.50 30.50 61.50 138.50 614.50 838.50 1136.50 7158.00
1967 1118.00 922.50 908.50 780.50 436.00 219.00 2.00 7.50 115.00 603.50 849.00 1286.00 7247.50
1968 1236.50 873.00 769.00 734.50 494.50 201.00 17.50 167.50 286.50 614.00 916.00 1195.00 7505.00
1969 1223.00 1058.00 1021.00 595.00 309.50 220.50 53.50 52.50 215.50 719.00 863.00 1151.50 7482.00
1970 1155.50 882.50 932.50 803.50 427.50 172.50 25.00 15.00 403.00 705.50 885.00 1336.50 7744.00
1971 1249.50 1013.00 1018.00 650.00 384.00 248.00 72.00 22.50 413.00 643.25 a 961.50 1285.00 7959.75
1972 1295.50 1164.00 870.00 725.50 381.00 156.00 70.00 29.50 379.00 565.75 a 904.00 1331.50 7871.75
1973 1253.00 911.00 905.00 689.50 374.00 193.50 30.00 53.00 263.00 566.50 921.50 1101.50 7261.50
1974 1327.00 1024.50 933.00 649.50 479.50 126.50 50.50 85.00 221.00 508.50 868.00 1206.00 7479.00
1975 1253.00 1005.50 984.00 833.50 509.50 276.50 24.00 111.50 232.00 605.50 983.00 1120.50 7938.50
1976 1218.50 1082.50 1104.50 676.00 347.50 293.00 32.00 144.50 212.50 601.00 822.50 1156.00 7690.50
1977 1327.50 892.00 1032.00 589.00 607.50 109.00 99.00 98.68 a 329.00 560.50 952.00 1093.00 7689.18
1978 1101.50 904.00 738.50 618.50 479.00 210.00 74.00 127.50 308.50 517.50 946.00 1440.00 7465.00
1979 1514.00 1037.50 882.00 649.50 401.00 175.50 37.50 29.00 152.59 a 503.00 1003.50 1100.50 7485.59
1980 1254.00 889.50 917.50 536.00 384.50 223.00 36.50 0.00 z 242.50 585.50 900.00 1083.00 7052.00
1981 1036.50 959.00 773.50 605.00 447.00 211.50 43.50 14.00 197.50 598.00 700.71 b 1097.00 6683.21
1982 1258.50 1128.50 917.50 834.50 462.50 177.50 91.00 27.00 256.00 606.50 1015.00 1244.50 8019.00
1983 1091.50 881.00 825.50 700.00 403.00 207.00 121.00 23.50 289.00 527.50 881.00 1331.50 7281.50
1984 1305.50 1145.50 902.50 692.00 423.50 266.50 20.50 12.50 348.50 695.00 973.00 1402.50 8187.50
1985 1419.00 1251.00 1078.28 a 605.36 b 377.68 a 165.00 a 2.50 139.50 451.00 740.00 1206.50 1514.00 8949.82
1986 1188.00 912.50 752.00 671.00 452.50 96.00 126.00 18.00 440.50 590.00 929.50 1244.50 7420.50
1987 1372.00 976.00 903.00 512.00 312.50 157.50 118.00 116.50 223.00 524.00 911.50 1291.00 7417.00
1988 1379.00 1030.50 934.50 600.00 455.00 163.50 34.50 68.00 351.00 388.50 991.50 1345.50 7741.50
1989 1383.50 1285.00 948.00 610.50 476.00 178.50 35.00 140.50 277.50 614.00 922.00 1157.50 8028.00
1990 1146.00 1180.00 896.00 541.50 513.00 258.50 58.50 81.50 111.00 673.50 947.00 1592.50 7999.00
1991 1341.00 842.50 938.50 744.50 556.50 306.50 28.50 18.50 225.50 606.50 1002.50 1193.00 7804.00
1992 1161.50 838.50 716.50 568.50 294.00 165.00 111.50 107.00 342.50 531.00 1086.50 1423.00 7345.50
1993 1430.50 1156.50 926.50 743.00 312.50 329.00 267.00 164.50 313.50 588.50 1138.00 1237.50 8607.00
1994 1104.50 1094.50 833.50 592.00 363.00 226.00 53.50 33.00 184.50 687.50 1200.00 1233.50 7605.50
1995 1186.50 844.00 942.50 712.00 475.50 271.50 55.80 a 133.50 246.00 715.50 846.00 1164.00 7592.80
1996 1191.50 1113.00 886.00 668.00 513.50 219.50 37.00 96.50 388.45 a 638.00 905.00 1227.00 7883.45
1997 1265.50 1047.00 952.00 739.50 357.00 179.50 106.50 44.00 208.50 677.00 887.50 1257.00 7721.00
1998 1118.00 984.50 929.00 694.50 457.50 309.00 3.50 28.50 163.00 647.00 899.00 1246.00 7479.50
1999 1181.00 1118.50 961.50 785.00 535.00 255.52 a 106.00 48.80 d 335.17 a 587.45 a 790.00 1225.50 7929.44
2000 1267.50 944.50 939.30 a 571.00 403.50 196.07 b 43.40 a 45.00 330.00 633.00 1143.50 1292.00 7808.77
2001 1349.00 1065.50 858.00 733.45 a 394.50 231.72 a 36.54 c 29.34 c 180.00 630.69 b 849.50 1372.50 7730.74
2002 1289.00 1138.50 1077.50 681.50 502.20 a 193.50 19.12 a 109.57 b 255.50 715.50 946.00 1060.50 7988.39
2003 1017.00 960.30 a 842.00 679.00 475.00 180.00 16.00 19.00 162.50 k 407.50 k 1152.00 e 1146.00 6486.30
2004 1332.50 1139.00 819.50 598.50 473.00 212.50 41.50 105.00 281.00 f 629.00 955.50 1188.50 7494.50
2005 0.00 z 994.50 860.00 693.46 d 447.00 321.50 47.50 72.00 356.00 608.00 999.50 1359.00 6758.46
2006 1215.50 1167.00 1033.52 c 393.00 m 470.54 c 250.96 d 4.50 m 0.00 z 0.00 z 34.50 z 0.00 z 0.00 z 4137.52
Period of Record Statistics
MEAN 1268.58 1037.26 934.35 650.33 418.60 212.44 51.16 70.20 264.79 575.10 931.66 1214.51 7628.83
S.D. 150.96 131.17 103.68 81.39 83.90 58.50 40.53 43.88 85.55 85.09 107.13 122.63 465.35
SKEW 1.22 0.04 -0.33 -0.10 -0.23 -0.02 2.32 0.37 0.25 -0.01 0.32 0.53 -0.51
MAX 1909.50 1347.50 1159.00 834.50 607.50 329.00 267.00 167.50 461.50 766.73 1206.50 1592.50 8949.82
MIN 990.50 708.50 625.00 399.00 212.00 81.00 2.00 0.50 85.50 386.00 700.71 942.50 5913.00
NO YRS 74 76 76 75 76 76 75 74 73 73 74 75 69