WISDOM, MONTANA

Monthly Total Heating Degree Days

(249067)

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
1923 1660.22 d 1479.50 1441.00 0.00 z 712.00 376.50 150.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5819.72
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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 1770.10 a 1770.10
1932 1955.00 0.00 z 1428.50 0.00 z 0.00 z 314.50 123.00 281.58 a 537.86 b 853.57 b 1041.21 a 1729.00 8264.22
1933 1556.41 b 1534.50 1217.00 892.50 706.50 198.00 88.00 252.50 522.50 695.00 944.00 1145.81 e 9752.72
1934 1292.00 1126.50 905.50 645.00 424.00 323.50 138.50 158.50 529.00 669.00 928.00 1405.00 8544.50
1935 1559.00 1379.50 1227.50 932.00 678.50 341.00 145.00 220.00 428.50 752.50 1347.50 1594.50 10605.50
1936 1563.50 1464.00 1323.00 766.00 418.50 224.00 48.50 166.00 504.00 754.50 1228.50 1417.50 9878.00
1937 2088.50 1401.00 1283.00 959.00 467.50 348.00 70.50 268.50 357.60 e 707.50 1092.00 1402.00 10445.10
1938 1564.00 1294.50 1233.00 795.50 641.50 275.00 152.00 230.00 336.50 818.50 1340.50 1417.50 10098.50
1939 1378.00 1403.00 1201.50 766.50 500.50 419.00 150.00 230.50 481.50 795.50 1070.00 1164.50 9560.50
1940 1675.00 1261.50 1077.50 768.50 477.00 237.50 85.00 178.50 377.50 687.00 1302.50 1540.50 9668.00
1941 1661.50 1433.00 1108.00 792.50 515.50 288.00 110.00 188.50 643.50 832.00 1034.00 1499.50 10106.00
1942 1777.50 1478.00 1316.39 c 787.50 624.13 a 386.50 110.50 208.00 468.50 797.50 1263.00 1427.00 10644.53
1943 1654.37 a 1357.50 1354.00 710.00 689.50 401.00 143.00 253.00 484.50 661.50 i 1091.00 1616.50 9754.37
1944 1723.00 1381.50 1335.00 831.50 607.50 392.50 217.50 313.50 402.00 677.00 1247.50 1676.50 10805.00
1945 1475.50 1209.00 1201.00 944.50 620.50 482.00 150.50 198.50 553.00 730.50 1263.50 1526.50 10355.00
1946 1543.50 1290.50 1145.00 763.50 679.00 334.00 157.00 247.50 540.00 954.50 1127.68 b 1336.50 10118.68
1947 1659.50 1265.50 1190.00 0.00 z 0.00 z 0.00 z 0.00 z 30.00 s 379.66 a 582.00 1225.86 a 1463.50 7766.02
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 319.00 310.00 557.68 b 851.98 a 1239.00 0.00 z 3277.66
1949 0.00 z 0.00 z 0.00 z 237.50 p 0.00 z 327.00 f 218.60 b 11.00 w 401.00 g 995.00 973.50 1528.00 3715.10
1950 1673.00 1274.00 1280.50 927.50 766.50 406.00 265.50 323.00 593.50 739.50 1231.50 1356.00 10836.50
1951 1746.00 1381.00 1412.05 a 910.34 a 618.00 537.50 207.50 341.00 560.00 910.37 a 1322.00 1651.50 11597.26
1952 1648.00 1557.50 1556.50 889.14 a 554.00 356.50 251.50 275.00 492.00 806.00 1389.50 1599.00 11374.64
1953 1181.50 1323.50 1270.50 999.50 768.00 412.50 145.50 251.50 476.90 a 800.00 1069.00 1426.00 10124.40
1954 1475.08 a 1221.50 1444.00 853.00 588.00 477.00 126.50 349.50 536.50 910.50 997.00 1709.00 10687.58
1955 1677.50 1512.00 1505.00 1045.50 702.50 430.50 242.83 a 217.50 538.97 a 761.64 b 1358.50 1601.00 11593.44
1956 1631.00 1484.00 1310.50 904.50 555.50 380.00 205.00 357.00 542.00 911.00 1292.00 1428.50 11001.00
1957 1959.00 1263.50 1273.50 963.00 594.00 454.00 273.00 381.50 595.00 875.75 a 1254.50 1400.00 11286.75
1958 1662.00 1190.50 1385.00 993.50 473.00 420.50 334.50 288.00 636.00 896.50 1210.00 1265.00 10754.50
1959 1455.50 1395.00 1281.00 894.50 784.50 341.00 247.50 343.50 601.00 847.00 1215.00 1430.00 10835.50
1960 1726.50 1559.50 1316.00 865.50 716.50 388.00 145.00 396.50 537.50 894.50 1198.00 1535.00 11278.50
1961 1478.50 1041.50 1186.50 987.50 691.00 257.50 174.50 172.00 709.00 905.50 1290.50 1564.00 10458.00
1962 1775.00 1367.50 1432.50 868.00 659.50 396.00 291.50 346.00 552.50 755.00 1162.00 1347.50 10953.00
1963 1706.00 1041.00 1148.50 968.00 613.50 440.50 273.50 282.50 405.50 717.50 1143.00 1506.00 10245.50
1964 1596.00 1412.50 1444.00 971.50 677.00 451.00 165.50 327.80 d 609.00 824.50 1234.50 1541.00 11254.30
1965 1474.50 1245.50 1614.50 901.03 a 772.00 428.50 253.00 320.50 736.00 746.00 1090.00 1482.00 11063.54
1966 1500.00 1397.00 1399.00 960.50 612.77 a 461.50 206.00 310.50 444.50 882.50 1105.50 1531.50 10811.27
1967 1383.50 1248.00 1289.50 1097.50 699.50 390.00 176.50 218.50 404.50 844.50 1144.50 1629.50 10526.00
1968 1650.50 1403.00 1193.50 1024.50 768.00 432.00 225.50 370.00 562.00 859.00 1248.50 1691.00 11427.50
1969 1551.00 1578.50 1511.50 820.50 553.00 431.00 253.00 248.00 518.00 1029.50 1090.50 1423.00 11007.50
1970 1507.00 1242.50 1383.50 1088.50 657.72 a 328.50 166.50 224.00 624.50 984.50 1172.50 1564.50 10944.22
1971 1430.00 1240.50 1303.50 920.00 634.50 447.50 264.50 159.00 668.50 915.00 1170.00 1628.50 10781.50
1972 1574.50 1337.50 1088.50 959.50 674.00 338.00 290.00 241.00 629.00 876.00 1206.00 1687.00 10901.00
1973 1674.00 1429.50 1222.50 954.00 684.50 406.00 206.00 260.50 558.50 813.48 b 1192.50 1377.50 10778.98
1974 1625.00 1207.00 1256.00 866.50 770.00 278.00 201.50 351.00 540.00 829.50 1096.50 1459.00 10480.00
1975 1558.00 1401.00 1331.00 1172.50 775.00 480.50 110.50 354.00 546.50 870.50 1259.00 1366.07 a 11224.57
1976 1429.00 1354.00 1430.50 979.50 572.50 460.00 206.00 350.00 482.00 838.50 1080.00 1342.00 10524.00
1977 1615.00 1158.50 1264.00 813.00 706.00 277.00 273.50 308.00 542.00 820.50 1233.00 1445.50 10456.00
1978 1484.50 1254.30 a 1146.50 827.59 a 721.50 427.50 249.00 347.50 508.00 797.50 1367.59 a 1800.58 a 10932.05
1979 2131.50 1290.59 a 1233.00 961.50 646.50 362.50 212.50 259.00 426.00 766.50 1390.50 1280.00 10960.09
1980 1754.50 1276.50 1219.00 827.50 579.00 401.50 237.50 367.00 486.00 828.00 1135.00 1193.00 10304.50
1981 1319.00 1149.50 1010.50 815.50 642.50 409.00 245.00 195.50 531.00 878.50 1123.50 1464.50 9784.00
1982 556.00 t 1502.00 1190.50 1094.00 702.50 368.50 252.00 232.00 566.50 883.50 1333.00 1597.50 9722.00
1983 1524.00 1349.50 1199.00 999.00 697.00 411.50 261.00 184.50 561.00 773.50 1180.00 1933.00 11073.00
1984 1453.50 1334.50 1168.50 957.50 653.00 448.00 199.50 211.50 631.00 998.50 1267.50 1754.50 11077.50
1985 1816.50 1517.50 1499.00 839.50 578.00 362.50 127.00 349.00 629.00 898.48 a 1487.00 1614.50 11717.98
1986 1477.50 1212.50 1034.50 842.50 627.50 278.00 323.50 233.50 629.50 851.50 1176.72 a 1618.50 10305.72
1987 1627.00 1334.00 1062.00 719.00 554.50 336.50 279.00 391.50 490.50 865.50 1194.50 1554.00 10408.00
1988 1644.00 1324.00 1287.00 786.50 613.50 225.50 193.00 314.50 554.50 692.50 1242.00 1624.00 10501.00
1989 1512.50 1699.50 1198.00 851.00 666.00 361.00 135.50 311.00 549.50 822.00 1054.50 1393.00 10553.50
1990 1394.50 1327.50 1144.00 749.00 724.50 396.00 197.50 273.00 384.00 898.00 1110.50 1779.50 10378.00
1991 1565.00 1056.50 1166.00 921.00 717.50 453.00 214.50 201.00 462.50 913.00 1282.00 1579.00 10531.00
1992 1556.00 1334.00 982.50 784.50 540.00 295.50 309.00 289.50 546.50 777.00 1307.50 1703.50 10425.50
1993 1833.00 1619.00 1107.50 866.50 489.00 445.50 441.00 380.50 539.00 812.00 1312.00 1457.00 11302.00
1994 1316.00 1320.50 1030.50 785.00 548.00 366.50 238.50 239.50 438.00 863.50 1361.00 1531.50 10038.50
1995 1645.00 1091.50 1089.00 858.00 621.50 405.50 212.50 283.50 488.50 885.00 1017.50 1440.00 10037.50
1996 1531.00 1399.50 1192.50 837.00 732.00 334.50 191.50 299.50 583.50 872.00 1135.00 1454.50 10562.50
1997 1588.50 1411.50 1173.00 1011.50 575.50 335.69 a 251.00 255.00 461.00 872.50 1176.00 1707.50 10818.69
1998 1508.00 1432.00 1218.00 864.50 588.00 475.00 102.50 232.00 367.24 a 879.50 1068.00 1539.00 10273.74
1999 1400.17 a 1323.50 1388.00 1004.50 707.00 426.72 a 289.50 208.22 a 567.00 762.00 1008.10 a 1474.00 10558.71
2000 1533.43 b 1293.09 a 1257.05 a 758.79 a 633.00 381.21 a 226.50 281.00 564.83 a 853.03 b 1557.60 e 1606.50 10946.03
2001 1638.72 b 1496.50 1240.53 b 919.14 a 579.50 336.00 g 214.42 a 197.37 a 406.55 a 819.43 a 1065.58 d 1688.47 a 10266.21
2002 1476.50 1458.00 1383.00 911.50 679.50 351.50 132.50 386.50 491.00 1027.00 1205.00 1403.86 c 10905.86
2003 1355.00 1444.50 1103.50 848.00 643.50 368.50 102.50 142.50 486.50 768.00 1390.50 1509.46 e 10162.46
2004 1622.00 1525.50 795.50 g 781.00 645.63 e 382.00 156.50 f 290.50 537.50 820.50 1157.50 1327.04 e 9089.17
2005 1408.50 1235.04 e 1040.50 833.00 634.00 446.00 172.00 258.50 506.50 729.00 1142.50 f 1696.50 8959.54
2006 1409.00 1487.50 1331.40 b 812.50 580.50 298.50 97.00 287.50 517.00 840.50 864.50 h 1539.50 9200.90
2007 1691.50 1187.00 983.50 808.50 594.00 297.00 40.00 249.00 525.50 812.50 1146.50 1498.52 c 9833.52
2008 1669.00 1298.04 d 1351.17 b 1103.50 662.00 430.00 173.00 260.50 562.00 856.00 603.00 k 1562.18 c 9927.39
2009 1268.00 f 1377.70 a 1382.48 e 959.00 622.50 421.50 195.00 g 281.00 369.60 e 980.50 707.50 l 1755.00 8149.28
2010 1175.00 h 1026.00 g 1194.10 e 936.00 e 681.00 f 414.00 185.00 f 314.50 459.00 724.50 1258.50 1739.21 b 7039.80
2011 1095.50 i 1425.85 b 1030.00 f 1011.00 e 691.09 b 450.56 c 225.86 c 235.37 d 437.78 c 522.50 i 1045.50 f 1560.50 6037.99
2012 1145.00 f 1490.60 d 1124.61 d 614.00 f 671.48 c 408.75 b 76.50 j 241.69 d 502.78 c 739.00 f 730.50 k 1520.50 5960.41
2013 1303.00 f 1310.81 a 853.50 j 26.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 61.00 z 1310.81
Period of Record Statistics
MEAN 1587.13 1349.57 1251.93 892.60 635.90 379.79 198.76 272.87 518.89 831.28 1196.34 1525.27 10608.79
S.D. 168.27 133.82 143.70 103.45 83.65 68.83 73.26 63.43 81.69 86.19 123.84 150.84 554.92
SKEW 0.69 -0.09 0.09 0.27 -0.47 -0.53 0.25 0.07 -0.03 -0.09 0.22 -0.06 -0.68
MAX 2131.50 1699.50 1614.50 1172.50 784.50 537.50 441.00 396.50 736.00 1029.50 1557.60 1933.00 11717.98
MIN 1181.50 1041.00 905.50 645.00 418.50 198.00 40.00 142.50 336.50 582.00 928.00 1145.81 8544.50
NO YRS 75 79 78 76 77 78 77 79 80 78 75 81 66