BRIDGER, MONTANA

Monthly Total Heating Degree Days

(241102)

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
1900 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 58.50 v 0.00 z 0.00 z 0.00 z 0.00
1901 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
1902 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
1903 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
1904 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
1905 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
1906 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
1907 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
1908 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 770.50 1184.20 a 1954.70
1909 1323.70 a 1081.50 859.98 b 752.07 a 386.97 b 115.00 8.50 11.37 a 152.14 b 505.82 a 786.50 1627.00 7610.54
1910 1323.18 a 1296.50 542.50 c 405.00 b 311.60 b 69.44 c 16.00 102.96 c 283.45 a 472.75 a 885.50 1131.50 a 6840.39
1911 1314.00 1176.50 779.13 a 676.50 343.58 a 61.03 a 42.50 113.67 a 244.66 a 723.00 1175.69 a 1431.34 b 8081.61
1912 1477.00 1095.50 1363.48 a 597.78 c 395.50 131.50 68.95 b 78.00 446.50 690.27 a 813.89 c 1189.37 a 8347.73
1913 1461.28 b 1373.00 1181.88 c 518.89 c 391.63 a 59.00 51.50 23.25 a 251.50 733.50 815.56 c 1277.20 a 8138.18
1914 1140.50 1178.00 915.00 593.04 b 311.55 a 146.50 6.00 61.47 b 244.50 547.00 809.46 b 1560.00 7513.02
1915 1411.50 945.26 a 897.85 d 325.50 384.50 261.50 92.48 a 13.43 a 350.00 435.55 a 856.07 b 1094.00 7067.65
1916 1846.50 1120.12 a 594.00 g 0.00 z 0.00 z 220.50 4.00 33.00 262.50 708.50 1023.00 1545.87 a 6763.99
1917 1456.48 a 1271.93 a 1244.00 739.00 470.00 187.24 a 7.00 43.50 188.00 664.00 667.50 1253.43 a 8192.08
1918 0.00 z 1137.77 b 684.50 679.50 382.00 44.00 j 21.46 e 45.50 249.50 429.50 920.00 1032.50 5582.23
1919 1033.50 1199.50 959.00 516.00 291.50 49.00 2.50 20.50 185.00 889.00 1104.50 1481.28 a 7731.28
1920 1257.00 1090.00 876.50 f 770.50 351.00 138.62 a 23.00 51.00 163.50 519.50 901.00 1081.00 6346.12
1921 800.50 f 897.50 865.50 592.50 353.50 69.00 38.48 b 18.00 317.00 448.00 889.50 1175.33 b 5664.31
1922 1465.50 1350.50 923.00 659.00 343.50 50.00 34.50 0.00 111.50 453.12 a 1059.50 1352.12 a 7802.23
1923 1029.00 1259.50 965.00 640.34 a 0.00 z 86.90 a 0.00 a 42.00 140.50 722.50 727.00 1158.00 6770.74
1924 1535.03 b 899.50 1082.50 654.00 376.00 183.50 13.43 a 0.00 z 146.00 714.00 999.50 0.00 z 6603.47
1925 1301.50 965.50 916.64 b 531.00 328.50 157.00 0.00 b 13.90 b 156.21 a 987.50 929.00 1046.00 7332.74
1926 1161.47 a 804.00 895.00 547.24 a 262.47 a 98.50 6.72 a 30.50 401.50 475.00 924.00 1230.00 6836.39
1927 1316.50 985.50 974.50 745.50 549.22 a 77.59 a 9.00 37.00 291.50 473.78 a 945.00 1519.50 7924.59
1928 1283.00 1051.77 a 372.00 n 681.00 242.00 224.50 20.50 19.00 198.50 646.50 0.00 z 1235.87 a 5602.63
1929 1694.50 0.00 z 873.50 684.50 435.55 a 112.50 3.00 0.00 271.00 407.00 1071.00 1280.50 6833.05
1930 1776.50 769.50 996.00 403.50 390.00 65.00 1.03 a 0.00 z 0.00 z 466.50 n 941.00 1065.00 6407.53
1931 1052.50 812.00 874.50 68.00 w 476.50 25.50 8.00 11.50 223.50 376.50 925.38 d 1253.00 6038.88
1932 1327.50 1022.00 1206.50 519.00 348.50 122.50 36.17 a 62.00 248.50 548.70 a 733.00 1605.50 7779.87
1933 1171.00 1251.00 830.00 628.50 416.50 23.00 0.00 36.50 202.00 471.00 803.00 1007.50 6840.00
1934 688.00 977.00 832.00 466.50 126.07 a 56.50 9.96 c 28.33 b 213.00 g 400.50 866.90 a 1147.00 a 5598.76
1935 1260.50 906.50 1027.98 c 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 3194.98
1936 804.50 j 1681.00 891.80 c 535.00 f 151.26 b 63.75 b 0.00 b 18.50 g 160.18 b 466.00 891.50 1138.00 5443.49
1937 523.50 w 1191.56 a 887.00 519.50 217.00 141.00 34.00 18.00 131.50 417.50 877.50 1151.77 e 5586.33
1938 1030.00 1038.00 790.50 a 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 2858.50
1939 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 410.00 n 872.13 a 872.13
1940 1487.48 a 998.43 a 724.88 a 561.50 154.50 58.00 9.00 8.78 a 70.00 398.00 1067.07 a 1038.50 6576.15
1941 1106.00 955.00 860.50 596.00 218.11 c 124.50 4.13 a 25.66 b 350.00 629.00 787.50 1111.00 6767.40
1942 1345.50 1215.50 926.50 453.10 a 424.00 181.55 a 0.50 41.00 238.50 480.50 907.50 1109.00 7323.16
1943 1558.00 950.50 1217.50 390.50 415.50 176.50 5.68 a 1.50 167.50 355.00 0.00 z 1050.90 a 6289.08
1944 1120.50 1116.50 1003.50 477.00 209.50 181.50 19.00 17.50 148.00 356.50 344.00 q 1157.50 5807.00
1945 1134.50 990.00 808.00 691.03 a 349.00 197.00 8.50 19.50 264.00 380.50 833.00 1263.00 6938.03
1946 1064.50 972.00 667.00 341.50 370.00 85.50 4.00 38.00 227.50 687.50 937.00 1085.50 6480.00
1947 1226.00 1104.44 a 1045.50 574.00 290.00 187.00 0.00 9.00 197.50 359.50 1050.00 1133.00 7175.94
1948 1205.50 1214.50 1034.50 448.50 225.35 e 97.50 14.00 4.00 153.50 485.00 911.00 1335.00 7128.35
1949 1721.00 1234.50 949.00 359.50 193.00 94.50 9.00 9.50 237.00 695.00 582.50 1254.00 7338.50
1950 1655.00 856.00 962.00 253.50 s 423.00 151.50 31.00 32.00 284.00 410.50 961.00 1051.50 6817.50
1951 1380.00 961.00 1238.00 674.50 219.50 239.00 56.50 30.00 298.00 605.00 904.50 1385.50 7991.50
1952 1366.00 991.50 994.50 259.00 h 273.66 b 65.00 26.00 23.50 114.00 445.50 965.00 292.00 v 5264.66
1953 898.00 948.00 768.50 694.00 420.00 123.00 0.00 a 5.00 105.50 390.00 635.00 1008.00 5995.00
1954 1373.00 652.00 1057.50 569.00 315.50 156.00 4.00 24.50 190.00 524.00 614.00 1006.50 6486.00
1955 1208.50 1152.00 1104.00 529.50 248.00 118.00 28.50 10.00 232.50 342.00 1179.50 1243.00 7395.50
1956 1148.00 1066.00 876.00 568.50 231.50 20.00 19.50 54.00 148.00 423.00 839.50 1051.50 6445.50
1957 1660.00 948.50 796.50 619.50 250.50 113.50 3.50 12.50 206.50 578.00 924.00 890.50 7003.50
1958 1001.50 909.50 917.00 577.00 134.50 147.50 64.30 d 16.50 210.00 446.00 857.50 1140.50 6421.80
1959 1245.50 1192.00 815.50 648.00 446.50 60.50 18.50 10.50 294.50 560.00 1068.00 1058.00 7417.50
1960 1300.00 1142.50 923.00 618.50 307.00 75.00 2.50 46.00 160.00 440.50 823.00 1132.00 6970.00
1961 1070.00 754.00 754.50 654.00 291.50 8.50 0.00 6.00 398.00 562.00 965.50 1248.50 6712.50
1962 1496.50 1103.50 1005.50 469.00 328.50 105.50 15.50 62.00 237.50 438.50 787.00 1053.00 7102.00
1963 1660.00 849.00 835.50 651.50 319.00 128.00 9.00 14.50 78.00 387.00 812.00 1381.00 7124.50
1964 1218.00 1123.50 1061.50 598.00 307.00 156.50 0.00 82.00 274.50 443.50 985.00 1366.50 7616.00
1965 1109.50 1091.00 1312.50 562.50 415.00 144.50 8.00 61.00 563.50 378.50 750.00 1035.50 7431.50
1966 1399.50 1040.50 814.50 676.00 251.00 154.50 0.00 54.50 117.00 475.00 884.00 1133.50 7000.00
1967 1106.50 903.50 993.50 664.00 362.00 148.00 0.00 8.50 122.00 460.50 908.00 1329.00 7005.50
1968 1407.50 954.50 732.00 665.00 414.50 163.50 21.00 72.50 194.50 474.00 871.50 1382.00 7352.50
1969 1700.50 1076.00 1016.50 441.00 273.50 179.50 20.00 6.50 140.00 727.50 785.00 1035.50 7401.50
1970 1324.50 824.50 1040.00 769.50 305.00 91.00 7.00 0.00 293.50 629.50 937.00 1188.00 7409.50
1971 1415.50 1054.50 905.50 627.50 280.50 83.50 29.50 0.00 282.50 599.50 842.00 1341.00 7461.50
1972 1540.50 1043.00 704.50 603.50 336.00 51.00 62.50 15.50 281.00 585.00 910.00 1448.50 7581.00
1973 1303.50 962.00 841.50 689.00 349.50 111.00 5.00 3.50 225.50 426.50 0.00 z 1034.00 5951.00
1974 1303.00 813.00 839.50 473.00 437.00 93.50 2.50 53.50 240.50 408.00 820.00 1049.50 6533.00
1975 1286.50 1261.50 971.00 826.00 415.50 138.50 0.00 z 30.00 205.50 496.00 951.50 1116.00 7698.00
1976 1229.50 925.00 1002.50 537.50 240.50 148.50 1.50 12.00 148.00 566.50 898.00 1091.00 6800.50
1977 1448.00 871.50 916.50 512.50 330.50 70.50 5.50 52.50 234.00 462.00 963.00 1311.00 7177.50
1978 1574.00 1285.00 905.00 554.00 386.00 112.50 36.68 a 43.00 185.50 476.50 1217.50 1543.50 8319.18
1979 1841.00 1260.50 900.50 619.00 363.00 99.00 0.50 8.50 90.00 0.00 z 1012.50 998.00 7192.50
1980 1436.00 1019.00 976.50 a 462.50 246.50 86.50 0.50 52.00 164.50 513.00 819.83 a 1053.00 6829.83
1981 939.50 947.50 730.50 471.50 340.50 114.50 13.50 7.50 131.00 553.50 754.00 1109.50 6113.00
1982 1540.00 1083.00 908.00 684.50 402.50 168.00 15.00 2.50 261.50 506.00 968.00 1165.50 7704.50
1983 981.00 797.50 796.00 648.00 404.50 117.00 20.50 0.00 245.00 448.50 861.50 1744.50 7064.00
1984 1205.50 886.50 816.00 622.00 325.00 148.50 10.00 1.00 360.50 674.50 853.50 1391.00 7294.00
1985 1472.50 1203.00 933.00 476.00 182.50 108.50 5.50 52.00 330.00 518.00 1432.00 1322.00 8035.00
1986 979.50 1115.00 590.55 a 573.50 354.00 23.00 20.50 4.00 325.50 522.50 1003.50 1115.00 6626.55
1987 1167.50 880.00 818.50 366.00 195.50 50.00 36.50 58.00 144.50 505.00 789.50 1114.00 6125.00
1988 1329.50 1048.50 808.00 466.00 228.00 20.00 3.50 11.00 239.00 375.50 862.00 1178.50 6569.50
1989 1247.00 1479.00 987.00 588.00 312.50 106.50 0.00 36.00 175.50 542.00 820.50 1339.00 7633.00
1990 1079.50 1035.50 824.50 531.50 362.50 123.50 6.00 1.50 78.50 502.50 764.00 1507.50 6817.00
1991 1412.50 719.50 852.00 643.00 314.50 63.50 6.00 0.00 153.50 589.50 1019.00 1043.00 6816.00
1992 1044.00 784.50 655.50 480.00 236.50 70.50 48.50 107.00 203.50 489.00 939.00 1420.00 6478.00
1993 1460.00 1252.00 774.50 563.00 205.00 169.50 129.00 72.50 290.00 650.00 620.00 l 639.00 n 5565.50
1994 767.50 j 0.00 z 850.00 389.00 l 146.00 i 71.50 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 850.00
1995 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
1996 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
1997 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 39.50 25.50 35.00 164.00 589.00 900.50 995.50 2749.00
1998 1244.50 758.59 a 899.50 441.50 230.50 310.00 25.50 0.00 106.00 543.50 247.00 u 1260.00 5819.59
1999 1098.00 725.50 791.57 b 624.81 d 318.86 c 0.00 z 18.82 c 0.00 z 0.00 z 0.00 z 695.50 1066.00 5339.06
2000 1262.50 1086.46 a 784.00 561.00 262.00 116.00 1.00 19.00 0.00 z 558.00 1264.00 1374.33 a 7288.30
2001 1186.50 1216.96 a 836.00 611.00 284.50 150.00 0.00 8.50 159.50 587.00 725.00 1231.00 6995.96
2002 1204.50 1004.00 1232.50 726.00 439.00 144.50 0.00 63.00 191.00 754.00 901.00 1088.50 7748.00
2003 1086.50 0.00 z 974.50 467.00 378.00 148.00 0.00 17.00 258.00 434.00 1090.00 1075.50 5928.50
2004 1303.00 994.00 713.50 514.00 380.00 169.00 21.00 65.00 255.50 544.50 821.00 1054.00 6834.50
2005 1351.00 946.00 843.00 616.50 424.00 166.50 22.00 80.50 261.50 529.00 855.50 1297.50 7393.00
2006 936.50 1082.50 967.50 504.00 324.00 55.50 0.00 19.00 250.50 668.50 899.00 1108.00 6815.00
2007 1361.50 1089.00 692.00 647.00 311.00 116.50 3.00 18.00 223.50 558.00 874.00 1262.50 7156.00
2008 1345.00 1038.00 916.50 740.50 404.50 184.00 16.00 27.50 295.00 557.50 724.00 1479.00 7727.50
2009 1199.50 949.50 999.50 663.00 349.00 211.00 33.00 48.00 130.00 826.00 821.00 1543.00 7772.50
2010 1245.00 1140.00 747.00 622.50 479.00 126.50 28.00 46.00 246.00 428.50 1066.50 1278.00 7453.00
2011 1292.50 1330.52 a 624.00 k 695.50 483.00 182.50 3.50 6.41 b 152.50 498.00 961.50 1221.00 6826.93
2012 1139.00 1061.50 654.00 490.00 406.50 92.00 3.50 47.50 152.00 607.50 783.00 1232.00 6668.50
2013 1320.00 1020.50 904.50 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 3245.00
Period of Record Statistics
MEAN 1298.39 1043.75 904.92 579.67 327.84 118.93 16.77 30.26 218.89 530.37 898.13 1214.26 7191.40
S.D. 216.41 174.60 152.27 105.94 86.50 57.27 21.24 26.35 84.49 123.48 137.75 175.69 545.50
SKEW 0.25 0.46 0.56 -0.24 -0.17 0.45 2.47 1.01 0.96 1.03 0.80 0.71 0.07
MAX 1846.50 1681.00 1363.48 826.00 549.22 310.00 129.00 113.67 563.50 987.50 1432.00 1744.50 8347.73
MIN 688.00 652.00 542.50 325.50 126.07 8.50 0.00 0.00 70.00 342.00 582.50 872.13 5995.00
NO YRS 96 98 97 92 95 96 97 94 94 95 93 97 71