GARDINER, MONTANA

Monthly Total Heating Degree Days

(243378)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1956 0.00 z 0.00 z 0.00 z 392.00 k 352.50 108.50 49.50 119.50 204.50 550.50 1098.50 1238.00 3721.50
1957 1670.50 1014.00 1012.50 749.00 368.00 199.50 13.78 d 52.00 206.00 f 611.22 a 1093.45 a 1113.13 d 7897.07
1958 1193.50 852.00 1027.50 713.00 215.50 155.00 87.00 21.00 240.50 501.50 990.50 1105.00 7102.00
1959 1246.50 1219.00 1006.00 713.00 559.50 112.00 45.00 45.50 314.00 424.50 i 1008.50 1154.00 7423.00
1960 1259.00 1324.50 0.00 z 0.00 z 0.00 z 41.50 q 4.50 97.00 181.00 430.50 h 945.00 1199.00 5010.00
1961 1176.50 306.00 q 0.00 z 547.00 g 363.00 44.50 15.50 16.00 447.50 645.00 970.50 1312.00 4990.50
1962 1592.00 1096.50 1046.50 567.50 410.50 176.50 45.50 90.50 229.00 404.55 a 809.00 1083.45 a 7551.50
1963 1632.00 847.50 882.98 a 706.15 d 360.00 197.00 20.15 a 24.69 d 64.00 l 408.96 e 703.50 f 1286.50 6365.93
1964 1328.98 d 1252.58 c 1210.50 698.00 397.46 c 247.00 2.50 119.00 274.14 a 456.00 966.00 1232.50 8184.66
1965 1163.50 1087.00 1308.50 626.50 494.00 190.50 20.00 96.50 538.00 469.13 a 833.50 1152.50 7979.63
1966 1264.80 a 1120.52 a 932.50 745.86 a 311.00 222.50 0.00 66.00 152.00 620.50 934.66 a 1280.50 7650.84
1967 1187.00 1056.22 a 1034.37 a 813.00 480.00 229.00 9.00 9.50 150.00 579.04 c 939.50 1517.93 b 8004.56
1968 1402.50 1037.02 b 826.00 783.50 506.50 211.00 27.00 128.50 257.00 533.00 1015.20 e 1302.50 8029.72
1969 1274.50 1035.00 1057.50 519.23 d 309.00 258.00 31.00 18.50 139.50 794.24 b 913.93 b 1201.80 c 7552.20
1970 1237.50 889.00 1079.83 a 867.93 a 377.50 155.00 15.50 2.00 383.00 695.84 c 953.89 c 1278.48 b 7935.48
1971 1288.57 a 1012.31 b 1048.46 c 688.50 417.98 a 163.00 40.00 1.50 389.44 c 650.50 953.00 1321.67 e 7974.94
1972 1347.39 c 760.00 g 755.48 d 518.50 f 428.63 e 95.50 g 90.50 36.00 356.25 b 484.00 f 976.07 b 1535.07 d 5525.40
1973 1077.00 f 977.57 e 925.41 d 765.56 c 432.85 d 93.00 g 0.00 z 12.00 289.50 522.50 962.00 1161.00 6048.38
1974 1323.00 994.50 1003.62 c 599.00 495.00 118.50 10.00 75.00 246.00 506.00 896.00 1283.00 7549.62
1975 1348.00 1076.00 1073.00 942.50 543.50 265.50 12.50 92.50 264.00 606.00 1066.50 1162.50 a 8452.50
1976 1247.50 1136.22 d 738.50 k 438.00 j 180.00 l 153.00 g 0.00 a 47.53 a 230.56 c 659.61 d 932.68 b 1294.50 5548.60
1977 1509.00 1002.50 1065.00 568.00 475.00 78.00 41.33 a 70.00 256.50 317.50 i 949.66 a 1250.69 b 7265.68
1978 1295.50 1136.07 a 841.43 c 628.50 465.00 158.50 21.50 81.00 0.00 z 438.98 c 1192.22 c 1545.50 7804.21
1979 1719.43 b 1099.54 b 755.50 f 676.03 a 424.38 b 140.89 b 8.00 42.76 b 105.00 a 275.50 l 1134.60 e 1081.38 a 6432.02
1980 804.50 m 468.00 n 551.50 o 368.00 l 372.57 d 0.00 z 19.63 a 100.00 227.22 c 365.00 h 730.50 f 1054.50 1773.93
1981 978.57 a 985.00 825.00 616.55 a 382.52 c 176.00 f 30.00 9.00 163.00 680.81 e 812.50 1195.50 6678.44
1982 1438.00 1142.08 b 989.50 822.50 463.28 d 272.50 61.48 a 8.00 320.50 664.50 1108.93 b 1301.47 b 8592.73
1983 1089.50 824.32 c 808.14 b 742.00 513.71 c 172.76 a 65.62 a 1.50 313.97 a 489.00 942.50 1074.00 h 5963.01
1984 1297.72 b 999.43 b 913.43 b 711.00 361.84 b 0.00 z 19.00 3.00 346.03 a 0.00 z 0.00 z 0.00 z 4651.46
1985 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 0.00 z 0.00 z 0.00
1986 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 0.00 z 1237.50 1237.50
1987 1289.50 926.50 826.00 387.50 239.22 a 82.50 56.00 77.00 0.00 z 484.50 0.00 z 1216.50 5585.22
1988 1369.00 1024.00 931.50 492.50 273.00 43.00 4.00 6.00 217.00 391.50 986.50 1304.58 a 7042.58
1989 1302.00 a 1410.50 922.00 576.50 374.50 130.00 2.00 50.00 190.50 564.50 906.00 1307.00 7735.50
1990 1189.00 1092.00 857.50 516.50 428.00 176.00 9.00 5.00 76.50 571.00 854.50 1579.89 c 7354.89
1991 0.00 z 0.00 z 939.50 711.00 453.50 140.50 3.50 0.00 223.50 642.00 1106.50 1205.00 5425.00
1992 1181.00 868.00 679.00 487.00 235.50 119.00 76.50 78.00 188.79 a 455.00 1043.50 1401.00 6812.29
1993 1351.00 1178.50 816.00 640.00 261.00 253.50 174.00 88.50 232.00 543.50 1120.50 1191.50 7850.00
1994 1096.00 1139.00 784.00 574.00 226.00 138.00 40.50 13.00 92.00 600.50 1102.00 1131.50 6936.50
1995 1171.00 909.50 965.00 707.00 426.00 187.00 10.50 n 9.50 232.00 673.00 808.50 1149.00 7237.50
1996 1353.00 1102.50 1068.00 613.00 507.00 110.00 1.50 22.00 247.00 571.00 983.00 1240.00 a 7818.00
1997 1334.55 a 1052.00 888.50 767.59 a 318.00 70.50 38.00 29.50 149.00 577.00 873.50 1251.50 7349.64
1998 1159.00 936.50 874.50 589.00 312.00 298.50 0.50 1.50 130.00 532.00 833.00 1246.72 a 6913.22
1999 1154.50 956.00 855.00 692.50 433.50 182.22 c 26.50 6.00 257.50 448.00 639.50 1195.05 a 6846.27
2000 1183.50 0.00 z 857.31 b 499.00 356.50 b 113.00 2.14 b 1.60 b 235.00 548.00 1185.50 1274.50 6256.05
2001 1266.35 a 1102.00 846.00 610.34 a 287.02 b 119.48 a 0.00 0.00 96.72 a 536.82 a 744.50 1261.70 a 6870.94
2002 1258.00 1062.50 1132.00 691.50 419.50 145.50 1.50 32.00 171.50 735.50 980.00 1067.00 7696.50
2003 1028.00 1113.50 863.50 587.50 368.00 151.00 0.00 12.00 242.50 401.00 1092.00 1095.50 6954.50
2004 1216.50 1031.50 699.00 535.50 416.50 172.00 13.00 73.50 232.50 543.50 888.00 1072.50 6894.00
2005 1215.50 972.50 865.50 605.00 393.50 0.00 z 16.00 49.00 189.00 457.50 926.50 1314.50 7004.50
2006 1087.00 1099.50 927.50 537.00 300.50 56.50 0.00 21.50 214.50 619.50 899.00 1194.00 6956.50
2007 1407.50 959.50 701.00 211.00 v 174.50 o 74.00 0.00 12.50 190.00 0.00 z 0.00 z 1293.50 4638.00
2008 1397.50 0.00 z 1034.50 0.00 z 0.00 z 194.50 2.50 17.50 220.50 523.50 781.50 1393.50 5565.50
2009 1241.00 944.50 954.50 0.00 z 360.50 218.50 39.50 49.00 95.50 820.50 896.50 0.00 z 5620.00
2010 1156.50 996.00 809.00 666.00 549.50 182.50 37.00 47.50 146.50 410.00 1077.00 1187.50 7265.00
2011 1244.00 1240.81 a 878.50 739.00 531.50 204.00 0.00 1.00 92.50 494.50 983.50 1253.00 7662.31
2012 1127.50 1106.00 768.50 502.00 405.67 b 120.50 0.00 4.65 a 103.00 601.00 998.50 1191.50 6928.82
2013 1303.50 1050.00 907.50 20.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 52.00 z 3261.00
Period of Record Statistics
MEAN 1280.63 1050.81 926.48 651.95 395.23 160.81 25.46 39.89 225.17 558.13 962.17 1243.39 7498.32
S.D. 150.32 119.40 128.80 112.30 88.08 62.16 31.50 37.32 94.08 101.75 114.86 118.81 511.07
SKEW 0.92 0.54 0.48 0.14 -0.15 0.10 2.38 0.73 0.90 0.44 -0.22 0.94 0.27
MAX 1719.43 1410.50 1308.50 942.50 559.50 298.50 174.00 128.50 538.00 820.50 1192.22 1579.89 8592.73
MIN 978.57 824.32 679.00 387.50 215.50 43.00 0.00 0.00 76.50 391.50 639.50 1054.50 6812.29
NO YRS 52 49 50 46 51 47 53 55 51 47 50 53 31