BOZEMAN 6 W EXP FARM, MONTANA

Monthly Total Heating Degree Days

(241047)

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
1966 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 0.00 z 972.50 1240.00 2212.50
1967 1130.50 950.00 1159.00 838.50 471.00 289.50 27.50 33.00 183.00 616.00 977.50 1439.00 8114.50
1968 1402.50 1092.00 842.50 760.50 544.00 260.00 70.00 165.50 314.50 588.50 1021.50 1412.50 8474.00
1969 1599.00 1267.50 1287.02 a 577.50 360.50 282.50 73.50 39.00 211.00 845.00 887.50 1165.50 8595.52
1970 1275.50 846.50 1120.50 877.00 403.00 161.00 46.00 25.50 428.79 a 742.00 959.00 1309.50 8194.29
1971 1287.00 1008.50 1009.00 748.00 436.00 232.50 96.50 18.50 406.00 703.50 951.00 1406.50 8303.00
1972 1427.50 1006.50 763.50 711.50 460.35 a 142.00 131.50 47.50 392.00 717.00 996.50 1462.50 8258.35
1973 1476.00 1193.00 984.50 780.50 454.50 219.00 36.50 56.50 359.00 586.00 1087.50 1143.50 8376.50
1974 1397.00 943.50 1036.50 583.00 545.50 137.50 27.50 135.00 335.00 569.50 926.00 1260.00 7896.00
1975 1346.50 1275.00 1149.50 967.50 547.50 264.00 27.00 159.00 327.00 682.00 1074.00 1135.00 8954.00
1976 1237.50 1021.50 1150.50 658.50 340.50 234.50 34.00 89.00 266.50 636.50 930.00 1111.00 7710.00
1977 1436.00 898.50 1100.00 548.00 475.50 128.50 79.50 104.00 315.00 585.00 1020.00 1280.50 7970.50
1978 1385.00 1143.00 877.00 255.50 r 492.50 221.00 80.50 114.50 300.50 558.00 1243.00 1533.50 7948.50
1979 1865.50 1160.00 1001.50 698.00 423.00 181.00 33.00 60.50 155.50 539.50 1143.50 1044.00 8305.00
1980 1544.50 1118.00 1090.50 577.50 395.50 208.50 47.50 134.00 276.50 600.50 945.50 1006.00 7944.50
1981 1069.50 1053.50 822.50 625.50 453.00 263.00 54.50 22.00 239.50 689.50 885.00 1176.50 7354.00
1982 1399.50 1159.00 991.50 820.50 525.50 253.50 85.50 38.50 367.50 657.50 1140.50 1320.50 8759.50
1983 1032.00 897.50 854.00 794.50 518.50 243.00 102.50 26.00 370.50 598.00 945.00 1762.50 8144.00
1984 1191.50 1013.00 918.00 721.00 434.50 296.00 47.50 23.00 412.00 768.50 955.50 1472.00 8252.50
1985 1496.00 1256.50 1058.00 547.00 330.00 162.00 15.50 129.50 461.50 687.50 1434.00 1415.00 8992.50
1986 1105.00 1081.50 676.00 658.50 426.00 90.50 111.50 36.00 440.50 599.00 1043.50 1294.50 7562.50
1987 1302.00 940.00 844.00 436.50 306.50 154.00 114.50 165.00 234.50 563.50 962.50 1268.00 7291.00
1988 1400.00 1032.00 931.50 572.50 340.50 79.00 25.00 65.50 344.00 457.00 1002.50 1304.00 7553.50
1989 1262.50 1531.50 1069.50 658.00 475.00 196.00 19.00 123.00 298.50 641.00 852.00 1283.00 8409.00
1990 1157.00 1070.50 971.00 595.00 514.00 244.00 49.00 78.00 136.00 576.00 839.50 1565.50 7795.50
1991 1329.50 787.00 964.50 717.50 477.00 236.50 27.50 8.50 244.00 663.00 1101.50 1134.50 7691.00
1992 1166.50 870.00 711.00 547.00 290.50 155.50 154.00 136.50 277.00 521.00 1039.50 1491.50 7360.00
1993 1493.00 1313.00 866.00 662.50 316.00 275.50 258.50 211.00 344.50 633.00 1126.00 1154.00 8653.00
1994 1005.50 1140.50 816.00 605.50 298.00 195.00 73.00 29.50 186.00 666.50 1139.50 1248.00 7403.00
1995 1290.00 904.00 969.00 722.50 486.00 249.50 66.50 91.00 307.00 694.50 842.50 1175.50 7798.00
1996 1402.50 1109.50 1099.00 581.50 544.00 138.50 20.00 62.52 a 354.31 a 657.50 1083.50 1318.00 8370.83
1997 1386.00 1043.00 853.50 812.00 326.00 162.50 80.50 66.00 210.00 637.50 977.00 1308.00 7862.00
1998 1242.50 992.00 989.00 609.00 315.50 318.00 5.00 12.50 166.50 604.50 832.50 1283.00 7370.00
1999 1097.63 d 925.56 a 874.20 a 719.50 480.00 235.34 a 65.62 a 15.50 338.50 506.50 674.50 1120.00 7052.85
2000 1173.50 909.00 843.00 542.00 374.07 a 187.50 25.00 13.00 285.00 613.50 1301.00 1402.50 7669.07
2001 1326.50 1232.50 929.50 653.00 304.50 231.21 a 31.00 4.50 153.00 616.50 790.00 1234.12 b 7506.33
2002 1237.00 1100.00 1171.50 712.00 0.00 z 219.00 12.00 135.50 269.00 784.50 976.00 1117.50 7734.00
2003 1072.50 1171.00 916.50 607.00 442.00 209.50 4.50 35.00 284.00 490.00 1119.00 1165.00 7516.00
2004 1328.00 1085.50 741.50 531.50 446.50 232.50 37.00 97.00 296.50 579.50 922.50 1085.00 7383.00
2005 1292.50 934.00 850.50 616.00 476.50 313.50 29.50 62.00 228.50 512.50 934.50 1336.00 7586.00
2006 1028.50 1097.50 948.50 594.50 379.50 175.96 d 1.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4224.46
Period of Record Statistics
MEAN 1302.42 1064.31 956.27 666.36 426.38 211.95 59.61 73.54 295.35 625.31 1001.36 1284.58 7957.60
S.D. 175.71 148.69 138.83 110.55 79.83 58.22 48.61 53.93 83.88 82.56 141.01 157.93 501.43
SKEW 0.60 0.68 0.16 0.55 -0.22 -0.29 1.99 0.65 -0.05 0.39 0.65 0.68 0.29
MAX 1865.50 1531.50 1287.02 967.50 547.50 318.00 258.50 211.00 461.50 845.00 1434.00 1762.50 8992.50
MIN 1005.50 787.00 676.00 436.50 290.50 79.00 4.50 4.50 136.00 457.00 674.50 1006.00 7052.85
NO YRS 40 40 40 39 39 40 39 39 39 39 40 40 37