BABB 6 NE, MONTANA

Monthly Total Heating Degree Days

(240392)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201105
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
1906 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 236.00 n 130.50 246.50 390.50 380.50 m 845.50 h 1106.00 f 767.50
1907 1933.37 a 1064.50 890.50 i 967.76 a 705.00 441.00 287.35 e 365.80 a 437.50 h 476.33 e 850.56 c 1147.52 a 8239.17
1908 1416.50 1271.00 1520.50 772.00 631.00 416.50 155.50 277.97 a 414.50 826.00 933.00 1490.50 10124.97
1909 1764.50 1221.00 1165.00 1105.50 728.50 380.00 209.00 g 239.00 304.50 671.00 1152.50 1514.72 b 10246.22
1910 1217.50 1373.00 799.00 551.50 529.50 328.50 148.50 330.50 473.00 597.50 1008.50 1075.00 8432.00
1911 1690.00 1299.50 908.50 897.50 598.00 333.00 295.00 405.00 621.21 a 736.00 1276.00 1338.00 10397.71
1912 1407.92 a 1114.95 a 1448.22 a 753.50 524.79 c 281.50 337.50 373.00 601.50 788.00 967.00 0.00 z 8597.87
1913 1914.50 1519.00 1486.50 739.14 a 0.00 z 0.00 z 212.00 k 0.00 z 0.00 z 0.00 z 0.00 z 184.00 z 5659.14
1914 1676.50 1758.81 a 1291.50 694.14 a 443.00 334.50 5.00 172.50 254.50 465.00 1138.50 1624.00 9857.95
1915 1089.50 0.00 z 0.00 z 458.50 615.50 429.00 274.50 69.00 507.50 584.00 1047.50 1260.50 6335.50
1916 2230.45 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 199.00 393.89 c 828.50 1022.07 a 1649.09 c 6323.00
1917 1403.30 c 1504.50 1343.50 964.82 b 662.50 383.00 100.00 223.00 382.00 730.00 614.50 1669.50 9980.62
1918 1507.00 1340.37 a 1094.00 900.50 665.50 225.00 166.88 a 195.62 b 378.75 b 581.52 b 0.00 z 568.00 l 7055.14
1919 1147.50 0.00 z 0.00 z 680.00 499.00 281.00 95.00 95.50 342.50 1025.00 1195.50 1382.00 6743.00
1920 1396.55 a 1153.79 a 1201.00 1026.00 598.50 173.00 34.50 64.50 210.00 a 666.00 929.00 1208.50 8661.34
1921 1210.55 a 1045.33 a 1194.53 a 811.50 555.50 225.00 147.50 169.50 519.00 551.50 0.00 z 1296.00 7725.92
1922 1481.50 1621.00 1178.00 855.50 570.50 245.36 b 210.50 113.00 292.00 610.00 995.00 0.00 z 8172.36
1923 1333.00 1329.50 1158.00 801.50 542.50 a 341.00 143.50 235.00 405.00 735.50 791.00 1299.50 9115.00
1924 1445.00 966.50 1247.50 866.00 498.50 476.50 229.50 0.00 z 319.50 m 746.98 e 1175.40 e 1777.85 a 9429.73
1925 1502.47 a 1184.62 b 565.00 m 761.11 c 231.50 r 196.50 g 172.10 b 254.50 584.50 1059.50 1122.93 a 1220.50 7862.23
1926 900.00 g 988.00 1049.00 776.00 552.50 379.50 132.50 254.50 700.00 482.00 g 626.50 j 846.50 l 4832.00
1927 1426.50 1219.50 1094.82 a 896.38 a 730.05 a 342.93 a 192.20 a 234.71 c 457.50 b 600.76 b 1388.00 1720.00 10303.35
1928 1187.00 1123.48 b 979.27 c 883.97 a 386.47 a 425.69 a 160.68 a 321.00 454.14 a 489.00 k 922.00 1200.00 8043.69
1929 1843.00 1501.50 1070.00 954.23 d 619.50 357.00 189.50 132.78 a 577.24 a 620.50 1077.41 a 1481.05 b 10423.72
1930 2019.00 937.42 d 1107.50 583.45 a 577.00 331.00 179.28 a 146.73 a 422.00 879.00 951.92 d 0.00 z 8134.30
1931 1014.00 931.50 1138.00 779.50 490.32 a 258.00 166.00 146.50 446.79 b 661.16 b 1086.50 1111.00 8229.26
1932 1373.00 1176.00 1290.00 728.00 517.00 253.45 a 151.00 93.00 m 401.00 825.24 b 912.50 1337.50 8964.69
1933 1244.50 1340.50 1098.00 888.50 579.70 a 259.50 145.18 a 183.00 510.00 a 753.62 b 766.00 1487.48 a 9255.99
1934 962.50 952.00 965.50 587.00 383.50 376.00 180.50 199.00 605.00 646.50 831.50 1266.87 a 7955.87
1935 1564.00 942.00 1320.00 1040.00 633.00 356.50 146.00 212.50 361.00 326.00 m 1097.59 a 1043.00 8715.59
1936 1509.00 2122.00 1208.00 806.50 360.00 278.00 40.00 120.50 422.00 596.00 841.00 1386.50 9689.50
1937 1969.00 1453.00 1177.00 754.00 514.50 339.00 108.50 224.00 416.50 592.50 1125.50 1307.00 9980.50
1938 1244.50 1444.00 1110.50 788.50 585.00 279.00 129.50 258.50 214.50 615.50 1102.00 1233.00 9004.50
1939 1129.50 1426.44 a 1085.50 682.00 471.50 478.00 117.50 157.50 415.00 770.50 647.50 964.50 8345.44
1940 1477.00 1333.50 1008.50 852.00 440.50 271.00 131.50 182.00 310.00 590.00 1290.50 1103.00 8989.50
1941 923.00 j 1103.50 1048.50 703.00 515.00 305.50 99.00 192.00 582.50 723.00 915.00 1262.50 7449.50
1942 1188.00 1315.50 1074.50 706.50 620.00 446.50 198.00 226.50 406.50 629.50 1154.00 1286.50 9252.00
1943 1804.00 1041.50 1417.00 682.00 705.00 508.00 196.00 228.00 409.00 626.50 856.00 1042.50 9515.50
1944 1106.50 1331.50 1337.50 700.00 428.50 351.00 172.50 234.50 360.50 456.00 1020.50 1191.00 8690.00
1945 647.00 m 1076.00 1030.50 958.50 581.00 408.00 115.00 149.50 486.50 614.00 1160.00 1309.00 7888.00
1946 1178.00 1140.50 915.50 639.50 568.50 364.00 133.50 202.50 446.00 888.50 1233.50 1274.21 b 8984.21
1947 1376.00 1256.00 1207.50 699.00 481.50 369.50 95.00 239.00 449.00 601.50 1128.50 1175.50 9078.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 226.00 218.50 391.50 602.50 1037.00 1547.50 4023.00
1949 1703.00 1423.50 1156.00 603.50 480.00 363.00 201.00 179.28 a 391.50 840.10 a 691.50 1570.15 a 9602.53
1950 2380.50 1005.41 a 1219.00 885.50 621.00 372.00 204.08 a 252.00 443.50 759.50 1148.00 1111.00 10401.49
1951 1631.50 1332.00 1534.00 896.50 586.00 553.00 202.00 316.00 550.34 a 917.00 1021.00 1661.00 11200.34
1952 1575.50 1172.50 1290.00 674.00 553.00 382.50 230.50 254.50 321.00 579.00 1004.00 1104.50 9141.00
1953 1253.00 1036.00 1073.00 995.50 621.03 a 428.00 220.62 a 181.00 419.44 c 548.91 b 792.00 1130.00 8698.51
1954 1871.50 869.50 1311.00 1035.00 568.50 425.50 196.50 249.00 492.00 765.50 733.50 1042.00 9559.50
1955 1312.50 1336.00 1403.50 840.50 685.50 340.50 224.00 121.00 j 460.50 604.00 837.50 k 1421.41 d 8628.41
1956 1385.50 1356.00 1155.50 845.00 541.50 325.50 193.50 207.50 395.50 776.50 924.50 1216.50 9323.00
1957 1831.00 1366.00 1163.00 905.00 529.00 387.50 196.50 281.50 379.50 877.00 1063.00 1050.50 10029.50
1958 987.00 1116.00 1248.00 803.50 353.50 340.50 217.00 118.50 460.00 601.00 1111.00 1162.00 8518.00
1959 1402.00 1352.00 1040.50 837.00 660.00 308.50 162.50 293.00 489.00 739.50 1115.00 1024.50 9423.50
1960 1415.00 1272.50 1212.50 775.50 587.00 323.50 107.47 a 226.50 345.50 657.50 1025.50 1174.00 9122.47
1961 1099.00 1008.50 977.50 871.50 503.00 145.18 b 127.00 70.50 564.50 722.50 1132.50 1452.00 8673.68
1962 1429.00 1304.50 1296.50 639.00 546.50 291.50 220.00 229.50 435.50 579.00 866.00 1133.50 8970.50
1963 1676.00 865.50 971.00 770.50 573.00 355.50 214.50 186.50 249.50 557.00 993.50 1340.00 8752.50
1964 1284.00 1010.00 1317.00 848.50 583.00 339.00 176.50 291.00 576.00 534.00 1098.00 1778.00 9835.00
1965 1303.00 1158.00 1423.00 723.50 605.00 369.50 177.00 183.50 719.00 483.50 1030.50 1259.50 9435.00
1966 1657.97 b 1183.50 994.00 894.50 480.50 398.50 209.00 233.50 287.00 698.50 1148.00 1200.50 9385.46
1967 1296.00 1060.00 1341.50 985.00 628.00 393.50 131.00 98.00 232.00 672.18 a 1006.00 1354.18 a 9197.37
1968 1357.50 1015.50 858.50 869.50 616.00 382.50 228.00 277.00 381.50 680.00 952.50 1592.50 9211.00
1969 2170.00 1224.00 1118.50 622.00 473.50 313.00 215.50 142.50 329.50 886.50 758.00 1129.50 9382.50
1970 1543.00 969.50 1196.00 920.50 506.00 202.00 111.50 138.00 544.50 770.00 1128.50 1398.50 9428.00
1971 1668.50 1072.00 1183.50 728.50 503.50 388.00 208.50 70.00 522.00 789.50 1011.00 1591.00 9736.00
1972 1777.50 1366.50 1048.00 872.50 547.50 282.00 314.50 126.50 599.50 528.00 f 778.50 f 1009.50 n 6934.50
1973 1313.50 1093.00 917.50 808.50 474.50 297.00 158.50 181.50 113.00 w 540.00 i 1307.00 1238.00 7789.00
1974 1513.00 1022.00 1153.50 723.33 c 633.20 d 207.50 148.44 e 206.00 h 223.00 m 317.00 l 656.50 j 0.00 z 5400.98
1975 1469.52 e 1626.43 e 867.00 k 828.50 g 422.00 l 263.50 h 53.00 q 0.00 z 269.50 k 457.00 k 641.50 l 664.00 n 3095.95
1976 810.50 l 784.50 j 898.50 h 561.00 h 214.50 p 251.00 k 60.00 q 83.00 l 137.50 l 373.00 m 532.50 j 675.00 k 0.00
1977 925.00 j 546.50 i 815.00 h 409.00 i 538.37 a 240.50 197.50 255.50 454.29 b 537.00 h 878.00 h 1085.50 k 1686.15
1978 1014.50 l 643.50 o 663.50 i 486.00 k 0.00 z 250.71 b 196.33 d 170.50 i 457.80 e 590.00 1226.90 a 1558.00 4279.74
1979 1761.00 1393.50 1044.50 923.79 a 595.00 305.56 c 145.46 e 122.00 250.34 a 618.50 1005.50 1121.68 a 9286.84
1980 1645.00 1162.50 838.50 i 669.00 465.00 c 279.00 g 97.50 g 212.00 l 408.33 c 634.98 a 899.00 1255.50 7139.32
1981 929.50 1044.00 955.00 729.50 521.00 417.50 190.13 a 86.59 b 363.60 e 758.00 952.76 a 1348.00 8295.58
1982 1873.50 1274.50 1213.00 946.00 616.00 286.50 188.50 180.50 421.00 654.00 1170.50 1281.00 10105.00
1983 1101.50 876.00 1049.00 800.00 557.50 329.00 157.00 78.00 505.50 609.00 1012.50 1873.50 8948.50
1984 1174.00 894.00 1008.00 766.50 594.00 363.00 132.50 118.50 581.50 891.50 1042.50 1635.00 9201.00
1985 1287.53 a 1360.00 1077.00 672.41 a 399.90 a 319.00 68.50 228.00 643.50 722.00 1624.00 758.50 m 8401.85
1986 889.18 a 1288.54 b 766.22 a 769.00 493.00 175.50 223.50 99.50 580.50 580.00 1114.50 750.50 j 6979.44
1987 1097.50 940.50 1034.00 543.50 414.50 190.50 185.00 283.50 303.50 608.00 766.00 1178.50 7545.00
1988 1379.50 1103.61 b 955.50 673.00 425.00 162.00 113.00 121.00 369.00 550.00 934.50 1148.50 7934.61
1989 1209.50 1515.00 1145.00 730.00 550.00 252.00 94.50 206.50 388.00 658.00 930.50 1174.50 8853.50
1990 1179.00 1113.00 971.50 719.00 560.00 319.00 124.50 110.50 251.50 742.00 986.50 1552.00 8628.50
1991 1478.50 804.50 1105.00 758.00 530.50 353.00 109.00 90.00 338.50 750.50 1015.00 994.58 a 8327.08
1992 1029.50 898.00 777.00 618.00 436.50 200.69 a 260.00 250.50 426.00 662.00 995.50 1577.00 8130.69
1993 1521.07 a 1275.00 954.00 693.50 368.00 347.50 346.50 258.50 417.00 638.50 723.00 k 1055.00 7874.57
1994 1244.00 1438.50 867.00 697.50 442.00 291.00 86.00 152.00 197.00 693.22 b 1070.56 c 660.50 l 7178.78
1995 727.00 i 1100.30 a 1129.50 815.50 585.50 321.50 126.00 194.50 381.00 780.50 1011.00 839.50 l 6445.30
1996 916.50 l 1136.18 a 1287.50 714.00 673.73 a 251.00 114.50 85.00 460.00 731.50 809.50 j 1621.00 7074.41
1997 1534.00 950.00 1103.00 909.50 512.50 247.00 158.50 140.00 254.00 730.50 980.56 c 704.00 k 7519.56
1998 920.50 l 883.56 a 1107.45 b 693.00 402.50 342.00 106.00 38.50 m 157.50 j 533.72 a 687.00 j 170.50 z 4068.22
1999 692.50 m 614.50 k 637.00 k 562.50 i 456.50 g 275.00 h 175.50 h 88.50 i 402.60 e 370.00 l 459.00 j 490.50 q 402.60
2000 973.00 j 717.00 k 712.50 i 429.50 j 382.50 i 324.60 e 50.00 l 82.50 i 348.00 h 376.50 m 832.00 i 987.00 j 324.60
2001 695.00 k 1078.50 g 691.00 i 618.00 h 340.50 i 235.00 k 84.00 j 67.50 h 205.50 k 538.50 h 701.50 h 696.00 n 0.00
2002 931.50 j 1107.50 883.00 n 995.00 425.00 k 327.50 79.00 285.50 271.00 j 590.50 l 376.00 p 731.50 l 2794.50
2003 743.00 l 749.00 j 732.50 j 538.50 g 555.02 e 215.00 i 60.50 h 53.00 l 256.50 l 457.50 j 658.00 o 672.50 n 555.02
2004 1008.50 j 446.50 p 619.00 h 491.50 h 470.50 j 243.00 i 97.50 i 128.00 h 292.50 j 491.50 j 568.00 k 527.00 p 0.00
2005 816.50 l 675.50 i 0.00 z 567.50 i 383.50 i 281.50 g 76.50 j 203.50 i 345.50 i 390.50 l 573.00 m 676.00 q 0.00
2006 524.00 n 729.00 j 898.50 f 458.50 j 300.50 j 190.50 i 0.00 z 88.50 h 269.00 j 552.50 j 733.00 k 540.00 o 0.00
2007 0.00 z 898.00 i 677.00 i 613.00 i 414.00 g 245.00 h 17.50 j 151.50 h 365.00 i 466.00 i 570.50 n 575.00 q 0.00
2008 860.00 m 572.50 n 587.50 o 721.50 g 391.00 i 239.00 l 0.00 z 0.00 z 0.00 z 280.00 q 446.50 m 700.50 o 0.00
2009 618.50 p 759.00 k 998.50 f 621.00 g 388.00 j 314.00 f 124.00 h 160.00 h 146.50 h 600.50 i 325.50 r 827.00 r 0.00
2010 623.00 p 704.00 i 634.50 h 563.50 g 441.00 j 266.00 h 185.50 i 236.00 g 359.00 i 390.00 k 392.00 s 112.00 z 0.00
2011 1197.50 h 354.50 t 834.00 k 780.50 g 388.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1451.49 1198.81 1134.81 792.01 544.22 328.30 167.45 197.92 427.46 684.70 1019.77 1322.55 9210.00
S.D. 307.84 225.83 167.15 127.03 86.22 78.79 62.60 75.62 112.86 120.92 166.31 216.97 726.72
SKEW 0.64 0.93 0.19 0.06 -0.14 0.02 0.34 0.24 0.22 0.66 0.28 0.55 0.17
MAX 2380.50 2122.00 1534.00 1105.50 730.05 553.00 346.50 405.00 719.00 1059.50 1624.00 1873.50 11200.34
MIN 889.18 804.50 766.22 458.50 353.50 145.18 5.00 64.50 197.00 456.00 614.50 964.50 7545.00
NO YRS 82 86 81 87 86 87 88 84 86 82 79 75 55