DEER LODGE 3 W, MONTANA

Monthly Total Heating Degree Days

(242275)

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
1959 0.00 z 0.00 z 0.00 z 352.00 o 618.50 258.00 107.00 207.50 427.00 710.50 974.50 g 973.50 g 2328.50
1960 1538.12 a 1226.00 1058.50 761.50 570.00 273.50 40.50 234.00 338.50 683.00 1025.50 1348.50 9097.62
1961 1215.50 856.50 739.50 g 350.50 q 468.50 142.00 46.00 32.00 550.00 720.50 1126.50 1376.00 6533.50
1962 1725.09 d 1216.50 1205.00 630.00 506.50 259.00 140.50 130.50 351.50 627.50 901.00 1092.50 8785.59
1963 1749.00 832.00 922.50 742.00 454.00 309.50 164.50 151.00 232.50 554.50 912.50 1372.00 8396.00
1964 1317.50 1218.00 1223.98 a 811.50 541.00 353.00 88.50 202.00 425.00 685.50 1014.50 1335.00 9215.48
1965 1217.50 1065.50 1337.00 695.00 612.00 316.50 109.00 192.00 645.00 571.50 904.00 1223.50 8888.50
1966 1262.00 1138.00 1014.00 762.50 411.00 339.00 70.50 152.50 243.50 691.50 944.00 1209.50 8238.00
1967 1140.50 975.50 1057.00 891.00 573.50 307.50 75.00 59.00 222.50 634.50 1036.00 1463.00 8435.00
1968 1417.00 1023.00 864.50 846.00 612.50 303.50 110.00 187.50 402.00 705.50 1012.50 1317.00 8801.00
1969 1478.00 1240.50 1252.50 626.00 433.50 347.00 156.00 110.50 345.00 845.00 939.64 b 1221.00 8994.64
1970 1309.00 943.00 1130.50 904.00 497.50 214.50 82.00 80.50 505.50 800.00 988.00 1336.00 8790.50
1971 1251.50 1037.50 1088.50 756.00 472.00 318.50 144.00 27.00 481.00 770.00 1002.00 1448.00 8796.00
1972 1453.50 1114.50 854.00 778.50 544.00 201.50 149.50 80.00 441.00 750.50 1069.50 1538.50 8975.00
1973 1417.00 1139.50 964.50 812.00 504.00 258.50 79.50 92.00 407.00 655.00 1064.00 1142.00 8535.00
1974 1455.50 968.00 1030.00 671.50 652.00 182.00 61.00 186.00 391.50 636.00 948.00 1241.50 8423.00
1975 1401.50 1326.50 1197.50 1033.00 633.00 340.50 45.00 211.00 397.50 717.50 1049.00 1221.00 9573.00
1976 1231.00 1026.39 a 1128.50 706.00 426.50 331.50 99.00 177.00 327.50 703.00 1011.00 1205.00 8372.39
1977 1487.00 968.50 1065.00 650.50 539.50 187.00 160.50 172.00 400.00 696.00 1096.50 1284.50 8707.00
1978 1326.00 1081.63 a 856.00 692.50 590.00 265.00 143.50 180.32 a 360.50 648.00 1260.50 1578.50 8982.45
1979 1895.00 1157.00 971.00 765.52 a 509.00 223.50 84.00 122.50 282.00 637.00 1189.00 1060.00 8895.52
1980 1493.50 1062.50 1050.38 a 586.50 437.50 294.50 133.50 257.00 344.50 704.50 972.93 a 1055.50 8392.81
1981 1104.50 1036.00 901.50 713.00 518.00 343.50 130.50 90.50 348.00 703.50 953.50 1192.00 8034.50
1982 1388.00 1182.00 1022.50 851.00 586.00 284.50 145.00 104.50 424.50 0.00 z 1168.50 1357.00 8513.50
1983 1109.00 902.50 0.00 z 0.00 z 116.00 t 328.20 e 202.00 82.00 516.00 735.50 991.00 1796.40 b 6662.60
1984 1305.50 1015.50 929.00 787.50 581.00 379.00 159.50 88.00 569.50 858.00 1049.50 1536.50 9258.50
1985 1593.50 1328.00 1102.00 713.50 493.00 305.00 37.00 277.00 586.50 847.00 1505.69 a 1558.00 10346.19
1986 1241.50 1089.00 785.00 775.00 563.68 a 157.50 287.00 72.50 k 366.00 l 749.50 1211.50 1409.50 8269.18
1987 1432.95 b 560.50 n 984.00 626.50 450.00 272.50 226.00 331.00 378.00 767.50 1061.00 1387.00 7916.45
1988 1514.00 1110.00 982.50 639.50 506.00 165.50 116.50 162.50 448.50 565.00 1003.00 1400.00 8613.00
1989 1314.00 1617.50 0.00 z 716.50 557.50 278.00 68.50 k 224.00 417.50 720.50 947.00 1369.50 8162.00
1990 1181.50 1143.00 1003.50 674.50 611.50 356.50 115.50 139.50 242.50 762.00 925.50 1643.00 8798.50
1991 1493.00 893.00 1064.50 711.43 b 543.00 351.50 107.00 46.00 332.40 e 0.00 z 1177.00 1265.50 7984.33
1992 1259.00 928.00 802.00 654.50 0.00 z 220.50 244.00 229.00 0.00 z 683.50 1143.50 1519.50 7683.50
1993 1608.00 1431.00 953.50 792.50 399.00 397.50 367.50 261.50 479.50 762.50 1279.00 1236.00 9967.50
1994 1038.50 0.00 z 953.00 667.00 446.00 351.72 a 117.50 70.00 336.50 798.50 1167.50 1292.50 7238.72
1995 1328.00 937.50 1026.00 802.50 579.00 338.50 128.00 264.00 464.50 779.00 935.00 1285.00 8867.00
1996 1471.00 0.00 z 1077.50 678.50 606.00 302.00 132.00 173.50 482.00 797.50 1145.00 1420.50 8285.50
1997 1482.00 1141.50 1020.50 986.00 613.50 0.00 z 321.00 326.00 487.50 b 0.00 z 1041.50 1319.00 8738.50
1998 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 139.50 r 7.00 q 59.00 m 164.00 k 423.00 m 465.50 o 831.00 k 0.00
1999 692.00 l 649.50 j 0.00 z 0.00 z 80.50 z 203.00 k 103.50 l 35.00 k 268.00 i 361.00 l 467.00 l 684.00 m 0.00
2000 733.50 m 606.00 k 648.00 i 324.50 o 314.50 k 160.50 j 27.50 o 110.50 i 283.50 l 490.50 j 699.50 o 807.00 n 0.00
2001 690.00 p 763.50 l 523.50 n 443.00 m 194.00 q 177.00 n 67.50 p 38.50 l 114.50 o 273.50 q 354.50 r 674.00 p 0.00
2002 740.00 m 459.50 o 626.00 o 448.50 m 363.50 k 152.00 k 38.50 i 153.00 i 168.00 l 572.00 l 459.50 p 724.00 l 0.00
2003 571.50 p 723.00 l 621.50 j 427.00 i 302.50 l 151.50 j 14.00 i 32.00 f 169.50 l 377.00 j 729.00 l 749.50 l 0.00
2004 639.00 q 732.00 j 465.50 l 657.50 532.00 0.00 z 75.50 119.00 387.00 667.50 1003.00 1185.50 4627.00
2005 1336.21 b 1073.00 973.00 767.00 557.00 380.50 122.50 156.00 425.17 a 595.50 1051.50 1513.00 8950.38
2006 1046.00 1151.50 976.00 658.00 449.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4281.00
Period of Record Statistics
MEAN 1375.67 1097.18 1022.35 743.42 529.94 288.15 133.07 159.70 406.31 708.93 1055.64 1343.85 8861.79
S.D. 188.34 161.34 122.82 98.74 68.36 66.34 72.81 77.51 97.52 76.39 122.88 160.90 496.84
SKEW 0.47 0.96 0.37 0.97 -0.18 -0.57 1.42 0.29 0.19 -0.07 1.41 0.49 1.15
MAX 1895.00 1617.50 1337.00 1033.00 652.00 397.50 367.50 331.00 645.00 858.00 1505.69 1796.40 10346.19
MIN 1038.50 832.00 785.00 586.50 399.00 142.00 37.00 27.00 222.50 554.50 901.00 1055.50 8034.50
NO YRS 40 37 37 39 40 39 40 40 39 38 40 40 28