LOMA 1 WNW, MONTANA

Monthly Total Heating Degree Days

(245153)

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
1950 0.00 z 0.00 z 0.00 z 659.50 362.46 e 153.46 d 17.00 l 4.00 i 285.00 474.30 a 1075.00 1164.50 4174.22
1951 1602.00 1240.50 1406.50 663.62 a 297.94 d 269.50 41.50 64.00 347.59 a 697.50 975.50 1739.32 c 9345.47
1952 1672.45 a 1158.00 1241.60 b 427.78 c 214.00 f 69.00 19.38 c 24.28 a 95.50 h 524.42 a 984.11 b 1192.50 7313.51
1953 1118.07 a 713.00 g 879.88 a 759.31 a 423.84 b 121.67 c 0.57 d 16.05 c 112.80 e 415.50 780.00 d 1068.43 b 5696.13
1954 2010.98 d 759.00 1018.50 f 767.22 c 349.86 c 193.45 a 10.16 b 6.50 k 158.50 n 508.50 f 721.15 d 1106.04 c 5917.85
1955 1520.66 c 1296.08 b 524.00 r 243.00 r 465.55 c 160.56 c 64.14 b 3.44 d 362.88 d 533.20 a 1206.50 f 1606.26 d 6012.77
1956 1268.00 g 1328.50 618.00 h 664.29 b 310.53 b 45.60 e 13.50 45.97 b 204.60 e 446.50 g 658.50 f 721.50 l 2612.99
1957 1896.50 1398.92 b 264.00 v 0.00 z 210.00 f 75.50 f 4.43 c 24.00 i 194.00 f 522.00 k 986.90 a 752.50 h 4286.75
1958 1111.87 a 782.50 l 921.00 h 561.50 f 117.50 m 233.00 97.02 d 5.17 a 178.00 g 550.25 e 845.00 f 1409.39 c 3406.69
1959 1234.50 g 1619.13 e 652.50 h 626.25 b 527.60 e 118.00 48.50 99.50 h 280.00 g 408.00 j 935.50 g 689.50 j 2939.48
1960 1147.00 g 0.00 z 671.50 h 501.00 f 248.00 j 38.00 m 7.50 42.00 g 180.00 g 263.50 j 722.00 i 1087.00 f 7.50
1961 542.00 m 479.50 k 370.50 p 542.00 i 208.00 g 8.50 i 1.50 4.00 g 0.00 z 0.00 z 723.00 m 1626.47 a 1627.97
1962 0.00 z 0.00 z 784.00 g 429.50 299.50 74.50 15.00 38.75 a 228.00 449.50 778.00 1079.00 3391.75
1963 1706.50 893.00 768.50 595.50 277.50 82.50 20.50 19.50 77.50 361.50 957.00 1424.50 7184.00
1964 1199.00 908.00 1110.50 624.50 294.50 84.00 1.50 92.50 329.00 515.00 1090.18 b 1910.50 8159.18
1965 1637.00 1228.50 1396.50 661.50 415.00 161.00 19.50 61.50 506.50 378.50 1047.50 1246.50 8759.50
1966 1783.00 1225.50 883.50 688.50 255.00 137.00 2.00 54.00 101.50 541.00 1184.50 1345.50 8201.00
1967 1281.00 909.50 1127.00 840.00 393.00 154.50 4.50 4.50 146.00 498.00 958.50 1407.50 7724.00
1968 1505.50 1069.00 782.00 669.00 373.00 140.50 13.50 51.00 245.50 586.50 878.50 1628.50 7942.50
1969 2202.50 1464.50 1227.50 432.50 253.50 153.00 22.50 15.00 151.50 759.50 827.50 1247.00 8756.50
1970 1662.00 1015.50 1112.00 731.00 301.50 53.50 6.00 9.50 304.00 676.50 1131.50 1528.50 8531.50
1971 1644.50 1082.50 1002.50 600.00 292.43 a 117.50 20.00 3.00 284.50 595.50 888.00 1599.60 a 8130.03
1972 1762.50 1406.00 809.50 611.00 288.50 44.50 66.00 6.50 320.00 666.50 905.00 1544.00 8430.00
1973 1240.50 1085.50 822.50 693.00 283.00 112.50 9.50 13.50 232.00 502.00 1202.00 1142.50 7338.50
1974 1493.50 947.50 939.00 482.50 418.00 57.50 2.21 c 95.00 293.00 488.50 843.00 1092.50 7152.21
1975 1329.00 1455.50 1126.50 924.00 401.50 137.00 8.00 54.50 239.50 601.50 999.50 1160.00 8436.50
1976 1260.15 a 947.00 951.00 476.50 196.50 134.00 5.50 18.50 164.00 588.00 934.50 1048.00 6723.65
1977 1527.00 749.00 866.00 442.00 247.50 21.50 19.12 a 124.50 242.07 a 537.50 1071.00 1539.00 7386.19
1978 1892.50 1465.50 1012.00 517.50 323.95 a 72.86 b 28.00 57.00 201.00 523.38 a 1237.76 a 1470.50 8801.95
1979 1968.00 1454.00 912.50 667.00 364.00 71.50 16.07 d 12.00 90.00 445.50 971.38 a 1047.00 8018.95
1980 1581.50 1170.50 1026.50 355.00 182.00 75.50 13.00 83.00 199.00 486.00 822.00 1341.78 a 7335.78
1981 1063.50 960.00 776.00 473.00 269.50 142.50 9.00 6.00 165.00 526.00 743.50 1313.00 6447.00
1982 1914.50 1296.00 1014.50 715.00 426.80 c 85.50 21.50 22.50 249.50 569.00 1085.50 1204.00 8604.30
1983 1126.00 825.00 843.00 636.00 345.00 91.50 31.00 1.50 273.00 479.50 924.00 2056.00 7631.50
1984 1159.50 798.50 906.50 531.00 306.50 120.00 5.50 14.50 383.00 714.50 915.00 1622.50 7477.00
1985 1495.50 1249.50 898.50 456.00 188.50 87.00 2.00 86.50 431.90 a 604.00 1569.00 1300.50 8368.90
1986 952.50 1378.00 628.00 610.00 325.50 26.00 38.00 19.00 413.00 531.00 1112.00 1085.00 7118.00
1987 1109.50 887.00 872.50 406.50 221.50 50.00 39.50 99.50 176.00 595.00 820.00 1176.50 6453.50
1988 1365.00 1091.00 817.50 482.50 177.50 32.50 7.00 21.00 267.50 508.50 928.00 1243.00 6941.00
1989 1234.00 1563.00 1220.50 599.00 336.50 76.50 2.50 53.00 248.00 569.00 857.50 1326.00 8085.50
1990 1092.50 1064.00 888.50 600.50 379.50 161.50 12.50 15.50 117.50 602.00 884.00 1511.00 7329.00
1991 1538.50 751.50 917.50 577.00 325.50 101.50 3.00 0.00 196.50 715.50 1078.00 1072.00 7276.50
1992 973.50 935.00 763.50 505.50 266.00 93.50 65.50 123.50 275.50 536.00 922.00 1505.00 6964.50
1993 1763.00 1368.50 830.00 562.00 210.50 151.50 139.50 94.50 322.50 566.00 1101.50 1067.50 8177.00
1994 1421.50 1469.00 786.00 553.00 250.00 96.50 18.00 21.00 100.00 624.00 1030.00 1238.50 7607.50
1995 1326.50 1016.00 1052.50 679.00 331.00 127.50 24.00 38.50 239.00 619.50 971.50 1454.00 7879.00
1996 1737.03 a 1150.00 1217.00 536.50 447.50 84.50 21.00 18.50 270.00 632.50 1322.00 1555.50 8992.03
1997 1585.00 919.50 926.50 743.00 315.50 66.00 25.50 28.50 117.50 546.50 986.50 1114.50 7374.50
1998 1476.00 868.50 980.50 473.50 232.50 166.00 0.00 1.50 115.50 549.00 867.50 1275.00 7005.50
1999 1217.50 818.00 775.50 650.00 351.50 108.50 65.50 6.00 273.50 514.00 737.50 914.50 6432.00
2000 1342.50 1159.50 816.00 510.50 315.00 132.50 7.00 19.00 235.50 611.00 1129.50 1554.13 a 7832.13
2001 1226.00 1406.50 862.00 596.00 232.50 104.00 7.00 1.50 123.50 615.50 816.00 1255.00 7245.50
2002 1227.50 967.50 1474.50 716.00 398.00 136.00 13.00 115.50 227.00 797.00 806.00 1138.50 8016.50
2003 1184.50 1186.50 1043.50 462.50 398.50 113.00 5.00 17.50 263.50 451.00 1166.50 1116.00 7408.00
2004 1567.50 1145.50 737.00 490.50 422.00 183.50 14.50 46.50 267.00 665.50 868.00 1111.50 7519.00
2005 1457.50 953.00 882.50 562.50 368.50 118.00 12.50 68.00 219.00 510.00 832.50 1378.50 7362.50
2006 903.00 1060.50 994.00 483.00 281.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3722.00
Period of Record Statistics
MEAN 1452.31 1128.70 964.41 588.82 321.55 111.41 21.64 38.23 237.50 560.94 974.47 1332.75 7725.12
S.D. 301.78 234.76 187.02 118.34 78.35 50.04 25.94 35.72 94.16 90.98 163.78 239.57 709.46
SKEW 0.29 0.21 0.92 0.37 0.22 0.63 2.48 0.96 0.45 0.32 1.07 0.75 0.17
MAX 2202.50 1619.13 1474.50 924.00 527.60 269.50 139.50 124.50 506.50 797.00 1569.00 2056.00 9345.47
MIN 903.00 749.00 628.00 355.00 177.50 21.50 0.00 0.00 77.50 361.50 721.15 914.50 6432.00
NO YRS 51 51 47 52 52 53 55 50 49 50 50 52 44