WEST GLACIER, MONTANA

Monthly Total Heating Degree Days

(248809)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1949 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 778.44 d 867.50 1291.50 2937.44
1950 1864.50 1091.00 1096.50 788.50 531.50 300.00 86.00 123.50 376.55 a 663.00 1049.00 1132.53 a 9102.58
1951 1436.00 1166.00 1246.72 a 765.00 492.50 371.50 95.50 169.00 480.00 a 812.41 b 1060.50 1497.00 9592.13
1952 1450.50 1091.50 1053.50 632.00 421.50 259.00 139.00 129.50 285.50 601.00 992.07 a 1172.50 8227.57
1953 1021.00 979.50 933.50 788.00 501.00 297.00 85.00 109.50 303.50 609.50 891.00 1102.50 7621.00
1954 1409.00 930.50 1181.50 878.00 454.50 351.50 104.50 177.50 401.50 774.50 841.00 1155.00 8659.00
1955 1221.00 1213.50 1287.50 829.00 586.00 234.00 158.50 116.00 392.00 692.00 1287.00 1344.50 9361.00
1956 1312.50 1272.50 1061.50 752.50 433.50 244.50 90.50 127.50 336.50 701.50 1034.50 1208.50 8576.00
1957 1729.00 1181.50 1046.00 730.50 340.50 229.50 90.00 145.50 331.50 789.00 1020.00 1082.79 c 8715.79
1958 1145.85 d 1015.50 1026.00 710.00 237.00 186.50 100.50 45.97 b 360.00 700.50 1052.00 1166.50 7746.32
1959 1324.00 1198.50 958.50 705.50 575.50 247.00 111.00 204.50 438.00 750.00 1228.00 1212.00 8952.50
1960 1447.50 1191.00 1070.50 733.50 528.50 246.50 44.50 221.00 365.50 690.50 1044.00 1304.50 8887.50
1961 1246.50 902.00 942.00 789.00 464.00 96.50 44.00 30.50 526.00 771.50 1142.50 1321.50 8276.00
1962 1449.50 1135.50 1107.00 651.00 486.00 245.50 139.50 154.50 385.00 657.00 869.00 1067.00 8346.50
1963 1660.00 934.50 923.50 678.00 476.00 235.00 129.17 a 108.00 244.14 a 588.50 935.00 1279.50 8191.30
1964 1163.00 1080.77 a 1124.00 777.00 503.50 286.15 d 88.50 260.50 485.00 706.50 1001.79 b 1388.00 8864.71
1965 1132.50 1074.00 1240.53 b 705.50 532.00 296.50 118.50 132.50 622.00 580.00 924.00 1147.00 8505.04
1966 1274.62 a 1100.50 1019.00 742.50 390.00 287.00 101.50 147.00 197.50 709.50 1027.00 1137.50 8133.62
1967 1141.50 961.50 1106.50 812.00 471.50 218.50 48.00 31.50 150.50 666.00 1000.50 1317.50 7925.50
1968 1318.00 1004.00 811.50 745.00 486.50 240.50 99.00 198.50 385.50 743.00 970.00 1456.00 8457.50
1969 1632.00 1143.50 1031.00 632.00 410.50 232.50 127.50 121.50 321.50 813.50 929.50 1171.00 8566.00
1970 1333.00 1000.00 1067.00 820.00 426.50 144.50 80.50 103.50 529.50 826.50 1049.50 1271.00 8651.50
1971 1353.50 1047.93 a 1074.50 722.50 398.00 319.00 141.00 41.00 471.00 763.50 998.50 1393.50 8723.93
1972 1531.50 1112.00 894.00 789.50 462.00 193.50 158.00 51.50 468.00 788.00 973.00 1430.00 8851.00
1973 1437.00 1123.50 d 911.00 718.50 436.50 236.00 78.00 75.50 335.00 660.00 1086.00 1144.50 8241.50
1974 1368.00 967.00 1025.50 673.50 559.00 171.00 85.50 133.50 355.34 a 639.50 971.00 1115.50 8064.34
1975 1328.87 a 1276.00 1120.00 871.00 533.00 322.00 41.00 190.50 377.00 750.50 1057.00 1138.00 9004.87
1976 1223.50 1044.00 1092.00 702.50 404.00 333.00 83.50 142.50 323.50 677.50 990.50 1128.00 8144.50
1977 1382.50 945.00 977.00 617.50 482.50 155.50 122.50 144.00 445.34 a 713.50 1090.00 1393.00 8468.34
1978 1366.00 1057.00 928.00 674.00 539.40 a 197.50 87.00 213.50 347.00 697.00 1166.50 1483.50 8756.40
1979 1904.00 1151.00 996.00 747.00 436.67 b 206.00 73.00 39.50 278.00 636.50 1101.00 e 1079.00 8647.67
1980 1567.50 1103.00 1071.00 579.00 385.84 c 286.00 135.62 c 245.00 367.76 a 642.50 948.50 1216.23 a 8547.96
1981 1149.00 1035.50 881.00 662.00 408.00 349.50 102.00 63.00 332.00 712.50 929.00 1251.00 7874.50
1982 1438.50 1188.50 948.00 837.00 524.50 176.00 144.50 97.50 352.00 711.00 1098.00 1273.50 8789.00
1983 1125.00 919.00 885.50 712.50 421.00 237.00 159.50 58.00 434.00 673.00 914.00 1659.00 8197.50
1984 1163.50 984.50 897.00 677.50 527.00 267.50 70.00 66.00 481.00 826.00 1023.00 1412.57 a 8395.57
1985 1403.00 1237.50 1062.50 661.50 370.50 233.00 2.50 164.50 508.00 784.00 1432.50 1344.50 9204.00
1986 1165.00 1117.00 778.50 667.50 390.00 86.50 174.00 26.00 441.50 667.50 1077.00 1185.00 7775.50
1987 1290.50 1004.00 938.00 541.50 317.00 156.00 120.50 196.50 294.00 685.00 886.50 1264.00 7693.50
1988 1315.50 1059.50 897.50 564.50 413.00 139.50 103.00 78.50 342.00 597.50 920.00 1257.00 7687.50
1989 1212.50 1423.50 1080.50 684.00 472.50 174.50 49.00 153.50 376.50 696.50 916.50 1205.50 8445.00
1990 1156.50 1137.50 981.50 649.50 518.00 267.50 62.50 86.00 223.00 765.00 909.50 1526.50 8283.00
1991 1413.00 896.50 1055.00 713.50 473.50 288.50 62.00 39.00 333.00 771.50 1067.50 1165.50 8278.50
1992 1143.00 962.50 817.00 592.50 343.50 124.00 138.00 163.50 441.00 609.00 978.50 1469.50 7782.00
1993 1468.00 1289.50 963.50 653.00 280.00 262.50 264.50 177.00 410.00 658.50 1222.50 1182.50 8831.50
1994 1081.50 1198.50 935.00 628.00 364.00 236.00 51.50 63.00 271.00 684.50 1098.00 1223.50 7834.50
1995 1292.50 970.50 1030.50 715.50 421.00 251.00 83.00 210.50 333.00 769.50 977.50 1251.00 8305.50
1996 1441.00 1227.00 1140.00 693.50 580.50 202.00 59.50 124.50 420.50 762.50 1139.00 1385.50 9175.50
1997 1431.50 1054.50 1044.00 866.50 428.00 219.50 87.00 90.00 306.00 694.50 997.00 1193.50 8412.00
1998 1237.50 926.50 979.00 631.50 298.00 259.50 13.00 59.00 191.50 702.50 869.50 1231.50 7399.00
1999 1145.00 958.50 904.00 700.00 484.50 301.50 153.00 50.50 396.50 689.50 819.50 1118.50 7721.00
2000 1213.50 1034.50 897.00 656.50 454.00 241.50 96.00 118.83 a 413.00 686.00 1100.00 1353.00 8263.83
2001 1191.50 1181.00 938.50 751.00 393.00 283.00 109.50 62.50 213.50 691.50 882.00 1201.50 7898.50
2002 1195.00 1103.00 1247.50 754.00 541.50 227.50 50.00 146.50 323.00 841.00 960.00 1091.00 8480.00
2003 1126.50 1061.00 1014.00 656.00 434.00 182.00 29.50 26.50 261.00 588.50 1151.00 1258.00 7788.00
2004 1325.00 1044.00 855.00 570.50 418.00 214.50 41.50 74.00 375.50 670.00 936.00 1091.00 7615.00
2005 1331.50 1011.00 905.50 633.00 380.00 250.50 33.00 106.50 365.50 640.00 972.50 1360.50 7989.50
2006 1001.50 1168.00 964.50 618.50 355.50 130.00 6.00 67.50 294.50 673.00 1033.50 1226.00 7538.50
2007 1342.50 1022.00 832.00 630.00 361.00 182.00 5.00 81.00 326.00 666.50 949.00 1203.00 7600.00
2008 1341.00 1025.50 977.00 827.00 427.00 264.50 39.00 104.00 364.50 671.00 859.00 1461.50 8361.00
2009 1294.00 1051.00 1108.00 723.00 408.00 205.50 54.00 97.50 221.50 848.50 924.00 1468.00 8403.00
2010 1185.50 921.50 837.50 685.50 549.50 262.50 102.00 162.50 347.50 618.00 1090.00 1282.50 8044.50
2011 1285.00 1243.50 944.00 827.50 502.00 328.50 116.50 50.50 246.00 644.50 996.50 1150.50 8335.00
2012 1159.50 1071.45 a 885.00 580.50 493.00 259.50 35.50 80.00 264.50 727.47 a 893.00 1149.50 7598.91
2013 1218.50 940.50 758.00 g 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 2159.00
Period of Record Statistics
MEAN 1319.63 1077.53 1000.73 706.73 446.61 237.02 90.52 115.53 358.53 703.42 1009.67 1260.04 8330.32
S.D. 180.65 111.89 112.95 80.44 75.79 61.61 47.42 58.83 90.84 67.09 112.59 131.24 495.20
SKEW 1.06 0.54 0.42 0.20 -0.35 -0.23 0.62 0.41 0.21 0.27 1.07 0.73 0.23
MAX 1904.00 1423.50 1287.50 878.00 586.00 371.50 264.50 260.50 622.00 848.50 1432.50 1659.00 9592.13
MIN 1001.50 896.50 778.50 541.50 237.00 86.50 2.50 26.00 150.50 580.00 819.50 1067.00 7399.00
NO YRS 64 64 63 63 63 63 63 63 63 64 64 64 63