KETCHUM RS, IDAHO

Monthly Total Heating Degree Days

(104845)

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
1973 0.00 z 0.00 z 0.00 z 0.00 z 234.50 n 190.00 g 89.50 131.23 a 436.55 a 477.50 k 1116.96 b 1345.18 c 3119.43
1974 1550.50 1288.52 a 1141.83 d 534.00 i 364.00 n 112.00 p 2.00 x 212.72 b 297.00 f 723.91 d 999.00 e 1417.98 b 7334.47
1975 1520.50 1313.50 1260.50 1070.40 e 679.70 d 488.08 d 84.00 315.50 326.50 f 731.48 e 1119.60 e 1266.50 9849.76
1976 1414.00 1228.20 b 1310.02 b 546.00 i 395.00 f 279.00 g 75.71 e 268.15 a 366.92 d 479.00 k 938.89 c 1285.90 e 6887.80
1977 1477.87 e 738.00 i 866.00 h 680.77 d 707.32 a 167.00 141.16 c 166.22 b 405.58 d 360.50 o 1155.54 b 1322.67 a 6224.12
1978 1352.50 1169.78 a 990.00 829.14 a 645.83 a 328.45 a 131.50 260.73 c 442.80 e 626.89 d 1060.71 b 1632.31 b 9470.64
1979 1741.00 1227.00 1087.00 837.50 524.50 346.20 e 114.46 e 166.76 b 244.50 h 655.28 b 917.50 g 1337.50 8037.20
1980 1560.50 1122.00 1173.50 724.00 569.50 409.29 b 133.50 314.50 382.20 e 710.42 a 1067.50 1317.00 9483.90
1981 1321.00 1198.50 998.50 714.00 585.90 a 363.21 b 135.92 e 74.06 d 358.50 837.00 991.55 a 1367.00 8945.14
1982 1586.50 1344.50 1141.50 1014.50 608.50 364.00 178.50 112.50 411.00 799.00 1241.00 1467.00 10268.50
1983 1347.50 1157.50 1072.00 937.50 569.00 378.00 235.50 124.00 412.00 677.00 1127.50 1645.50 9683.00
1984 1581.00 1303.00 1152.00 868.00 595.50 401.50 84.50 114.50 0.00 z 889.00 1191.50 1647.00 9827.50
1985 1532.00 1449.00 1228.00 712.00 492.50 255.50 28.00 241.50 570.00 816.00 1348.50 1568.00 10241.00
1986 1327.00 1046.00 907.00 749.50 559.50 205.00 223.50 84.50 563.50 700.50 1015.50 1318.50 8700.00
1987 1503.00 1109.50 1026.00 612.50 482.50 283.50 224.00 192.00 322.50 606.00 985.00 1432.50 8779.00
1988 1488.50 1200.50 1049.00 719.00 566.50 230.00 67.50 161.00 401.50 494.00 1174.00 1534.50 9086.00
1989 1641.00 1348.50 1087.00 712.00 592.00 311.00 89.50 255.50 407.00 762.50 1045.00 1293.00 9544.00
1990 1394.00 1341.00 1029.00 649.00 673.50 371.50 135.00 163.50 278.00 780.37 e 1114.00 1768.00 9696.87
1991 1514.00 959.50 1207.00 883.00 686.00 451.50 106.50 129.50 424.00 770.50 1233.50 1502.00 9867.00
1992 1440.00 1095.00 893.00 724.50 442.00 285.50 248.00 213.00 453.00 646.00 1190.00 1522.00 9152.00
1993 1549.00 1283.50 1054.00 867.00 451.00 477.50 413.50 268.00 448.00 701.50 1238.00 1460.50 10211.50
1994 1338.00 1266.00 955.00 691.50 438.00 323.50 121.00 167.00 305.00 767.50 1344.50 1429.50 9146.50
1995 1376.00 1043.50 1125.50 782.00 600.00 382.50 172.00 200.50 342.41 a 659.50 f 474.00 o 1399.50 7423.91
1996 1435.50 1222.50 1036.00 760.00 599.50 289.50 45.00 188.50 480.00 769.00 981.00 1359.50 9166.00
1997 1414.00 1225.50 1065.50 829.50 422.00 264.31 a 147.00 104.50 333.50 737.50 1032.50 1348.50 8924.31
1998 1332.48 a 1143.50 1125.50 755.00 568.00 427.50 25.00 68.00 249.50 738.50 1031.50 1433.00 8897.48
1999 1375.00 1251.60 c 1121.50 811.73 d 382.50 k 342.60 e 141.64 b 100.46 d 399.83 a 633.50 833.79 a 1283.06 d 8294.71
2000 1389.32 a 1080.00 1081.50 498.00 f 503.50 231.43 b 91.00 68.41 b 405.00 536.00 g 1198.45 a 1354.59 c 7403.20
2001 1382.00 1229.00 929.48 a 776.90 a 404.07 b 173.50 j 155.00 a 121.50 331.61 b 697.00 995.00 1579.97 a 8601.52
2002 1439.00 1303.00 1250.00 718.50 474.00 203.00 16.00 174.50 337.00 784.50 1056.50 1271.00 9027.00
2003 1176.00 1175.50 1004.50 786.50 534.00 240.50 52.50 55.00 328.00 552.00 1173.00 1297.50 8375.00
2004 1481.50 1280.50 952.00 647.50 547.50 265.00 93.50 168.00 421.55 a 697.00 1006.00 1316.50 8876.55
2005 1365.50 0.00 z 1030.50 803.00 583.50 422.50 63.50 126.50 449.50 688.50 1065.50 1423.00 8021.50
2006 1378.47 a 1334.50 1195.50 768.50 451.00 206.00 28.00 149.50 390.00 722.50 1063.00 1392.00 9078.97
2007 1542.00 1081.00 924.00 701.50 455.50 230.00 9.00 101.50 380.50 746.00 777.00 h 1451.32 a 7622.32
2008 1636.00 1258.50 1214.50 970.50 525.50 327.00 41.50 109.50 465.60 e 189.50 v 655.50 h 1406.88 a 7955.48
2009 1342.50 1172.50 1163.00 750.00 215.00 v 343.00 0.00 z 196.00 246.00 866.50 1053.50 1498.50 8631.50
2010 1302.50 1203.50 1063.50 832.50 703.50 375.00 171.00 238.50 443.00 665.00 1080.50 1384.50 9463.00
2011 1427.50 1250.00 1136.50 664.50 h 0.00 z 433.85 d 152.50 123.48 a 300.00 a 632.29 b 1154.00 1320.60 a 7930.72
2012 1377.00 1252.50 1070.50 654.50 547.50 336.21 a 71.96 c 89.00 h 266.50 g 777.00 950.17 a 1354.50 8391.84
2013 1539.00 1128.00 1005.50 39.50 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 3672.50
Period of Record Statistics
MEAN 1447.27 1212.79 1083.51 781.26 552.60 326.67 119.39 164.89 391.17 717.69 1093.67 1418.86 9307.97
S.D. 112.29 101.83 102.98 104.53 83.78 83.63 79.30 68.50 74.57 84.22 111.99 119.56 511.48
SKEW 0.30 -0.24 0.12 0.91 0.11 0.02 1.39 0.48 0.21 -0.37 0.29 0.98 0.44
MAX 1741.00 1449.00 1310.02 1070.40 707.32 488.08 413.50 315.50 570.00 889.00 1348.50 1768.00 10268.50
MIN 1176.00 959.50 893.00 612.50 404.07 167.00 9.00 55.00 246.00 494.00 833.79 1266.50 8375.00
NO YRS 40 38 39 35 34 36 38 39 35 34 36 40 23