LINCOLN RANGER STN, MONTANA

Monthly Total Heating Degree Days

(245040)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 204.00 187.50 456.00 578.00 g 761.50 i 1647.50 2495.00
1949 1952.50 1335.50 1130.00 646.00 443.50 309.50 133.00 124.50 373.50 698.00 g 898.00 1075.00 h 7346.00
1950 1921.00 1105.50 1208.50 882.00 621.50 353.50 183.50 202.00 246.00 l 645.83 d 1185.00 1126.00 9434.33
1951 1306.77 e 147.50 y 1302.50 840.00 595.00 488.00 135.00 224.50 500.00 771.50 1127.50 1550.50 8841.27
1952 1407.92 a 776.00 l 1173.00 621.00 443.50 270.00 171.00 152.00 338.50 494.50 g 1169.50 1320.00 7066.42
1953 1014.00 1022.00 965.50 832.50 580.00 357.50 113.00 129.00 304.50 626.00 959.00 1166.00 8069.00
1954 0.00 z 921.00 1302.00 838.00 529.50 427.50 74.50 199.50 312.50 g 818.00 896.00 1338.00 7344.00
1955 1385.00 1321.50 1375.00 873.50 638.50 323.00 184.00 135.50 437.00 681.00 1374.00 1510.00 10238.00
1956 1433.50 1315.00 1125.50 755.17 a 497.55 a 269.50 131.00 217.00 397.50 779.50 1159.00 1195.50 9275.72
1957 1819.00 1173.50 1087.50 806.00 459.50 299.00 103.00 158.50 386.00 809.50 1105.50 1180.50 9387.50
1958 1246.50 1081.50 1173.50 805.00 289.50 282.00 202.50 109.00 429.00 682.50 1002.69 d 1227.00 8530.69
1959 1415.50 1287.00 1020.00 744.50 636.50 275.50 146.00 258.00 458.00 779.50 1245.00 1201.00 9466.50
1960 1482.50 1304.00 1088.50 799.50 581.50 265.00 69.50 238.50 389.00 725.00 1056.00 1327.50 9326.50
1961 1240.00 901.50 997.17 a 843.50 502.20 a 175.00 74.50 75.00 622.00 824.00 1214.00 1392.42 a 8861.28
1962 1496.50 1194.00 1123.50 680.50 556.97 a 319.50 217.00 202.50 448.00 642.00 973.00 1156.00 9009.47
1963 1701.50 943.00 996.00 789.50 567.00 358.50 199.50 179.80 a 319.50 589.00 955.50 1320.50 8919.30
1964 1297.00 1147.00 1181.00 835.00 566.50 318.00 96.50 245.50 481.50 670.50 1079.50 1450.50 9368.50
1965 1197.50 1121.00 1358.50 772.00 610.50 324.00 106.50 173.50 687.00 574.50 999.00 1284.50 9208.50
1966 1312.50 1139.50 1049.00 790.00 409.50 350.50 86.00 164.00 240.00 718.00 1034.50 1207.40 b 8500.90
1967 1202.50 1028.50 1144.50 965.50 570.00 321.50 78.50 100.50 245.00 648.33 b 1032.50 1433.50 8770.83
1968 1419.50 1046.00 841.00 801.00 602.00 353.00 135.00 270.00 462.50 802.50 1063.45 a 1555.00 9350.95
1969 1615.00 1193.50 0.00 z 643.50 449.00 337.50 150.00 132.27 a 345.50 877.09 b 971.50 1243.50 7958.35
1970 1353.50 993.00 1143.56 d 946.67 c 510.50 220.00 100.00 102.50 530.50 804.00 1047.50 1331.97 a 9083.69
1971 1364.50 1063.00 1101.50 759.00 465.00 319.00 155.50 39.00 514.50 812.50 1020.00 1543.00 9156.50
1972 1520.00 1094.50 916.57 a 805.50 552.00 210.00 196.50 91.50 476.50 818.50 1067.50 1551.50 9300.57
1973 1430.50 1128.50 974.50 802.50 493.42 a 260.00 71.50 114.50 422.50 699.00 1195.34 a 1151.00 8743.26
1974 1497.62 b 985.50 1054.50 675.00 635.50 a 202.50 76.50 228.00 190.50 n 715.50 943.45 a 1199.00 8213.07
1975 1396.50 1249.00 1173.00 1010.50 647.26 b 380.00 56.50 242.50 422.50 782.00 1101.00 1203.50 9664.26
1976 1246.20 a 1091.00 1123.00 734.00 441.00 332.50 111.50 162.00 367.50 758.90 e 1027.22 c 1207.00 8601.83
1977 1444.00 958.50 1072.00 657.00 555.00 183.00 164.50 159.00 416.00 735.50 1111.00 1387.50 8843.00
1978 1422.00 1157.50 938.00 715.50 591.00 299.50 158.00 204.00 371.00 711.50 1344.00 1663.00 9575.00
1979 1908.50 1174.00 1030.00 795.00 513.00 273.50 133.50 92.50 308.50 672.50 1210.00 1168.50 9279.50
1980 1633.50 1144.46 a 1083.50 630.00 442.00 0.00 z 189.50 319.00 387.50 696.50 984.00 1106.50 8616.46
1981 1177.48 a 1043.54 b 836.50 642.50 478.50 368.50 176.50 98.00 386.00 735.98 b 923.00 1276.00 8142.50
1982 1458.50 1241.33 a 1031.00 886.00 550.50 263.50 157.00 163.00 450.00 800.00 1227.00 1345.50 9573.33
1983 1224.50 950.00 891.52 b 828.50 558.50 310.00 195.00 87.50 503.50 734.00 1009.00 1822.50 9114.52
1984 1181.50 977.00 937.50 788.00 580.50 371.00 186.00 118.00 590.69 a 886.00 1045.50 1454.00 9115.69
1985 1487.50 1280.50 1107.50 650.69 a 416.50 293.28 a 32.00 239.00 558.50 794.00 1508.00 1375.50 9742.96
1986 1145.50 1133.44 c 796.50 711.50 447.50 175.00 270.00 99.50 507.50 686.00 1122.00 1322.50 8416.94
1987 1382.60 a 1016.00 963.00 544.00 418.00 237.50 164.50 275.50 333.50 689.50 1013.00 1373.00 8410.10
1988 1424.00 1116.00 979.50 636.50 459.50 129.50 123.00 140.00 392.50 565.50 998.50 1313.00 8277.50
1989 1251.50 1528.00 1133.00 748.50 545.50 267.00 45.00 223.50 447.50 723.00 871.00 1217.50 9001.00
1990 1158.00 1113.00 998.50 650.00 573.00 316.00 133.50 124.50 289.50 745.50 909.50 1616.00 8627.00
1991 1401.00 899.50 1114.00 786.00 530.50 314.00 69.50 43.00 360.50 782.50 1097.00 1183.00 8580.50
1992 1175.50 956.00 752.50 597.00 409.00 171.00 204.00 199.00 450.00 646.00 995.50 1475.50 8031.00
1993 1575.00 1374.50 881.50 690.00 293.50 303.50 300.00 254.00 468.50 694.50 1132.00 1082.00 9049.00
1994 1106.18 a 1212.00 837.50 702.00 485.50 281.00 120.50 75.50 285.50 681.00 1177.00 1343.50 8307.18
1995 1320.50 868.50 0.00 z 629.50 615.50 437.00 159.50 197.00 376.50 705.50 972.50 1223.50 7505.50
1996 1431.50 1139.80 a 1025.58 a 661.00 678.50 246.50 103.50 151.00 413.50 703.00 1044.00 1391.00 8988.89
1997 1494.00 1178.00 1003.50 898.00 436.50 188.50 81.50 133.50 281.50 656.00 1019.00 1175.00 8545.00
1998 1249.00 903.00 992.00 585.50 304.50 379.50 32.50 89.50 282.50 693.00 1044.50 1285.00 7840.50
1999 1210.00 938.50 946.00 761.50 536.50 312.00 178.00 64.50 489.50 617.00 466.00 l 667.50 n 6053.50
2000 1468.07 c 530.00 o 969.50 653.50 386.00 149.50 41.00 149.50 438.21 b 731.00 1255.00 1412.00 7653.29
2001 1285.00 0.00 z 946.00 741.50 408.50 f 257.50 101.50 42.00 237.00 697.50 858.00 1287.00 6453.00
2002 1203.50 1103.00 1229.00 781.50 516.50 243.50 47.50 176.00 287.00 851.00 973.00 1109.00 8520.50
2003 1021.50 1090.50 954.50 654.00 438.50 210.50 22.50 43.50 333.00 654.00 1193.50 1245.50 7861.50
2004 1406.00 1089.50 845.00 668.00 589.00 310.50 102.50 185.50 435.50 745.00 976.00 0.00 z 7352.50
2005 1307.00 1035.50 943.50 743.50 556.50 357.00 116.00 145.50 0.00 z 677.50 1083.50 1386.00 8351.50
2006 1067.50 1180.50 1040.50 676.00 457.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4422.00
Period of Record Statistics
MEAN 1380.62 1110.87 1042.99 748.43 513.29 291.97 130.51 157.77 409.91 722.99 1071.40 1328.34 8899.46
S.D. 207.26 138.01 136.38 99.92 88.63 72.87 59.50 66.18 96.05 73.44 128.22 160.49 540.15
SKEW 0.85 0.48 0.28 0.32 -0.53 0.00 0.35 0.16 0.39 0.10 0.97 0.83 -0.01
MAX 1952.50 1528.00 1375.00 1010.50 678.50 488.00 300.00 319.00 687.00 886.00 1508.00 1822.50 10238.00
MIN 1014.00 868.50 752.50 544.00 289.50 129.50 22.50 39.00 237.00 565.50 858.00 1082.00 7840.50
NO YRS 57 54 56 58 57 56 58 58 54 55 56 55 43