LEECH LAKE DAM, MINNESOTA

Monthly Total Heating Degree Days

(214652)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1893 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
1894 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
1895 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
1896 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
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 157.00 555.00 1275.50 1809.00 3796.50
1898 1610.00 1518.00 1203.00 721.50 395.50 101.00 47.00 63.00 239.50 781.00 1222.00 1859.00 9760.50
1899 2012.50 1912.50 1709.00 752.50 409.50 65.00 14.50 25.12 b 329.50 613.50 846.00 1593.50 10283.12
1900 1663.50 1865.50 1426.50 266.00 s 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 245.00 z 4955.50
1901 0.00 z 1669.00 1329.50 664.50 298.00 73.50 t 20.50 46.50 308.00 572.50 1229.50 1667.00 7805.00
1902 1666.50 1433.50 1058.50 817.00 349.00 168.50 18.00 126.00 367.00 686.50 1017.41 a 1717.50 9425.41
1903 1875.50 1637.00 1276.50 763.00 350.00 159.50 80.50 178.50 432.50 649.00 1298.00 1898.50 10598.50
1904 2044.00 1981.50 1388.50 870.00 417.50 150.50 94.00 116.50 381.50 622.58 a 931.50 1670.00 10668.08
1905 2009.32 a 1674.50 1137.50 839.00 506.00 211.50 58.50 47.00 207.00 755.50 1095.50 1493.50 10034.82
1906 1657.00 1605.50 1517.50 607.50 444.00 110.00 c 69.00 120.50 220.86 a 691.62 b 1200.50 1684.33 a 9928.32
1907 2095.00 1613.00 1367.74 b 1123.00 786.50 143.50 27.00 110.00 388.50 687.50 1091.50 1483.50 10916.74
1908 1652.50 1470.00 1326.00 710.50 476.50 162.50 50.50 137.50 193.00 619.00 1022.00 1617.68 a 9437.68
1909 1873.50 1584.00 1350.00 1065.50 493.50 120.50 21.50 39.00 270.50 708.00 1029.00 1771.50 10326.50
1910 1713.00 1701.00 848.88 a 590.00 520.50 148.00 48.57 a 128.50 288.50 534.75 a 1311.00 1813.00 9645.70
1911 2042.00 1508.50 1143.50 751.50 303.00 52.00 74.50 143.00 363.00 741.50 1423.50 1527.00 10073.00
1912 2359.00 1754.50 1545.50 671.00 380.50 74.50 k 52.00 150.00 332.50 589.50 996.00 1481.50 10312.00
1913 1968.00 1703.00 1544.00 619.50 461.50 104.50 54.00 47.50 304.00 755.00 928.00 1276.50 9765.50
1914 1607.00 1862.00 1313.50 839.00 283.50 125.50 15.00 115.00 234.50 443.00 1019.00 1782.00 9639.00
1915 1872.50 1272.50 1218.30 a 447.00 490.50 237.50 94.00 128.50 277.00 570.00 1089.00 1488.50 9185.30
1916 2029.00 1742.00 1420.50 852.00 479.50 192.00 2.50 86.50 316.00 719.00 1065.00 1817.00 10721.00
1917 1994.50 1847.00 1301.00 838.50 522.00 241.00 41.00 112.50 286.00 965.00 960.00 1955.50 11064.00
1918 2120.00 1573.00 1018.00 739.00 374.50 127.50 56.50 35.50 462.00 621.00 981.00 1463.50 9571.50
1919 1591.00 1579.00 1358.50 723.50 380.50 58.93 b 16.05 c 64.50 231.00 846.00 1335.50 1862.67 b 10047.16
1920 1952.48 a 1631.50 1240.00 983.50 381.50 119.00 43.29 b 57.50 162.50 425.00 1110.50 1501.00 9607.78
1921 1605.00 1352.00 1253.00 618.50 349.50 96.00 3.00 73.00 222.00 573.50 1324.50 1599.00 9069.00
1922 1822.00 1701.00 1202.00 744.00 214.00 82.00 56.00 70.50 216.00 556.50 933.50 1770.50 9368.00
1923 1723.50 1773.50 1668.00 839.50 365.00 56.50 10.00 141.50 225.50 645.50 900.00 1344.00 9692.50
1924 2028.50 1431.50 1236.00 790.00 585.00 191.00 68.00 130.50 373.00 411.50 1149.50 1942.50 10337.00
1925 1806.50 1444.50 1187.50 586.50 452.50 169.50 82.50 54.00 245.50 1001.50 1139.00 1650.00 9819.50
1926 1643.00 1374.50 1416.00 794.50 279.52 a 209.50 30.00 75.50 371.00 721.50 1316.50 1764.50 9996.02
1927 1798.00 1415.00 1109.50 689.00 494.50 173.50 67.50 141.00 258.00 550.50 1275.00 1979.50 9951.00
1928 1757.00 1467.50 1300.00 901.50 289.00 201.50 29.50 89.00 357.50 637.00 981.50 1373.00 9384.00
1929 2225.50 1718.50 1131.50 703.50 500.00 199.04 d 40.50 86.80 a 381.00 593.50 1239.64 b 1701.50 10520.98
1930 2079.50 1283.33 d 1279.78 a 658.50 372.50 83.50 30.50 36.00 288.50 704.00 1024.50 1464.50 9305.12
1931 1450.69 d 1142.00 1193.00 644.00 393.50 87.50 35.00 103.50 162.00 459.00 919.50 1296.50 7886.19
1932 1598.00 1587.00 1510.50 724.50 334.00 24.50 51.50 53.00 297.50 752.50 1245.50 1728.50 9907.00
1933 1618.00 1709.50 1309.50 791.00 341.50 37.50 6.50 84.50 179.50 744.60 e 1253.50 1811.00 9886.60
1934 1583.50 1574.50 1386.00 769.50 223.50 89.50 51.50 142.00 376.50 483.82 c 956.38 a 1742.50 9379.20
1935 1991.00 1255.50 1224.50 810.00 472.00 192.00 0.00 87.50 324.50 648.50 1329.50 1638.50 9973.50
1936 2135.00 2098.50 1263.00 970.00 233.50 158.65 d 13.50 68.50 238.00 808.00 1241.50 1599.50 10827.65
1937 2128.00 1608.00 1401.00 840.00 338.00 150.50 28.00 20.50 292.50 761.50 1153.00 1696.50 10417.50
1938 1825.50 1406.00 1012.50 791.00 484.00 148.00 32.00 25.00 246.50 490.50 1221.50 1618.50 9301.00
1939 1708.50 1797.00 1389.50 853.00 280.00 122.50 33.00 45.00 274.00 736.50 974.00 1266.50 9479.50
1940 1918.50 1459.50 1458.50 847.50 455.00 171.00 54.00 128.50 213.50 542.50 1259.50 1526.50 10034.50
1941 1733.00 1544.50 1340.00 563.50 245.50 133.50 38.00 88.50 246.50 620.50 1044.50 1421.00 9019.00
1942 1534.50 1441.50 1063.00 530.00 455.00 146.50 51.00 50.50 350.00 584.50 1122.50 1730.50 9059.50
1943 1964.50 1451.00 1491.00 738.50 416.50 106.50 4.50 43.50 299.50 559.00 1165.50 1468.92 e 9708.92
1944 1344.00 1480.00 1336.50 782.00 315.50 89.00 17.00 73.00 239.50 539.00 937.00 1527.00 8679.50
1945 1720.00 1422.00 941.50 792.00 521.50 231.50 47.00 50.50 331.50 670.00 1151.00 1690.00 9568.50
1946 1730.00 1574.50 887.00 606.50 425.00 127.50 21.50 89.50 292.50 644.00 1106.50 1645.00 9149.50
1947 1596.50 1570.50 1315.00 833.00 509.00 190.50 21.00 29.00 319.00 345.50 1266.50 1647.50 9643.00
1948 1915.50 1658.00 1312.00 654.50 354.00 108.00 33.07 a 39.00 182.50 569.50 1070.00 1639.50 9535.57
1949 1714.50 1647.50 1373.50 638.50 325.00 66.50 17.50 42.50 302.50 595.00 995.50 1648.50 9367.00
1950 2090.00 1525.50 1431.00 1036.50 492.00 111.00 36.50 141.50 220.50 560.50 1244.50 1800.00 10689.50
1951 1896.50 1463.00 1424.50 830.00 240.50 145.50 35.00 114.00 355.50 673.50 1303.00 1704.50 10185.50
1952 1821.50 1285.00 1343.50 602.50 353.50 68.50 33.50 83.50 213.50 749.50 1013.00 1368.00 8935.50
1953 1663.00 1449.50 1180.00 826.00 381.00 100.50 39.50 25.00 276.50 421.50 930.00 1583.00 8875.50
1954 1990.50 1104.50 1363.50 803.00 524.00 104.50 41.00 60.00 280.50 655.50 945.00 1362.93 b 9234.93
1955 1736.50 1592.00 1509.50 509.50 244.50 80.00 8.00 16.00 286.50 567.50 1321.00 1840.00 9711.00
1956 1733.93 a 1658.50 1402.50 878.00 423.50 46.50 55.50 49.50 375.00 415.00 1016.00 1541.50 9595.43
1957 2011.00 1514.00 1309.00 751.00 354.50 111.50 0.50 56.50 313.00 602.50 1039.00 1428.58 a 9491.08
1958 1477.67 a 1459.50 1102.50 628.00 331.00 239.50 62.00 84.00 240.50 566.27 a 1002.50 1757.18 a 8950.62
1959 1931.82 a 1555.04 a 1164.05 a 706.50 319.82 a 86.50 31.00 16.00 239.00 742.00 1376.00 1286.00 9453.72
1960 1684.85 a 1481.00 1460.00 728.50 358.00 129.00 33.50 22.50 251.00 555.02 e 1010.00 1644.00 9357.37
1961 1774.50 1224.50 971.50 861.50 408.00 67.50 24.50 16.00 294.00 538.00 1052.00 1609.00 8841.00
1962 1882.22 a 1545.50 1173.50 786.00 312.50 109.00 44.50 29.50 287.59 a 478.50 920.00 1521.50 9090.30
1963 1963.50 1543.92 c 1027.50 635.00 409.00 67.50 13.00 45.00 146.50 264.00 908.00 1760.50 8783.42
1964 1532.00 1416.00 1360.50 666.50 224.00 133.00 9.50 136.50 314.00 573.00 1021.00 1796.50 9182.50
1965 1916.50 1608.50 1555.00 739.50 313.50 107.50 32.50 82.50 477.00 542.50 1092.00 1345.00 9812.00
1966 2151.00 1528.50 1048.83 a 844.50 473.00 105.52 a 3.50 96.50 234.50 597.50 1191.00 1589.50 9863.85
1967 1713.00 1699.00 1227.00 762.00 526.50 118.00 53.00 87.50 224.00 657.00 1107.00 1536.00 9710.00
1968 1744.00 1606.50 1000.50 678.50 446.00 128.00 58.50 75.00 238.00 529.50 1025.50 1690.00 9220.00
1969 1894.50 1404.00 1353.50 636.00 371.50 265.50 45.50 18.50 243.00 778.00 1050.50 1459.50 9520.00
1970 1920.00 1485.50 1415.00 796.50 442.00 66.50 16.00 50.50 270.00 606.00 1127.00 1727.00 9922.00
1971 2041.50 1449.00 1287.00 693.50 421.00 47.00 69.50 86.50 246.00 509.00 1115.00 1602.50 9567.50
1972 1997.50 1712.00 1312.00 820.00 260.50 99.00 47.50 73.50 326.00 690.00 1115.00 1796.00 10249.00
1973 1613.00 1375.50 896.00 734.00 374.50 69.50 33.00 30.00 307.50 449.50 1084.00 1609.00 8575.50
1974 1834.50 1433.50 1322.00 723.00 475.50 96.50 5.00 88.50 377.00 580.00 1037.00 1369.50 9342.00
1975 1691.50 1473.00 1384.00 908.00 259.00 118.00 14.50 49.50 331.00 516.50 996.50 1629.00 9370.50
1976 1847.00 1239.50 1260.50 538.50 335.50 47.50 18.50 58.50 254.50 775.00 1267.50 0.00 z 7642.50
1977 2065.00 1337.50 985.00 528.00 109.00 68.00 12.00 145.00 297.50 617.00 1139.50 1726.00 9029.50
1978 1935.50 356.50 w 309.50 z 0.00 z 126.50 l 109.00 33.50 49.00 214.00 572.50 1162.00 1743.00 5818.50
1979 2094.00 1689.50 1251.50 861.50 518.00 130.50 16.50 92.50 202.00 697.00 1102.00 1358.50 10013.50
1980 1773.50 1546.50 1367.50 607.00 233.50 99.50 15.50 a 44.00 318.50 728.50 1018.00 1661.50 9413.50
1981 1622.00 1270.89 a 1001.00 631.00 336.00 85.50 31.00 b 30.50 264.50 664.50 880.00 1579.50 8396.39
1982 2156.00 1495.00 1308.00 814.50 245.00 193.50 13.50 85.50 268.50 568.50 1148.00 1355.00 9651.00
1983 1570.50 1207.00 1061.50 725.00 437.00 107.50 8.50 1.00 243.50 593.50 1035.50 1994.50 8985.00
1984 1756.50 1132.50 1334.00 625.00 369.00 59.50 21.50 14.50 365.00 525.50 1054.50 1633.00 8890.50
1985 1786.50 1511.00 1023.50 583.00 219.50 181.50 18.50 114.50 316.55 a 623.00 1368.21 b 1964.88 a 9710.65
1986 1672.50 1527.50 1169.50 623.50 345.50 95.50 26.50 122.00 305.00 639.50 1254.00 1445.00 9226.00
1987 1570.00 1060.00 978.00 454.50 251.50 44.00 16.00 57.50 189.00 696.50 936.50 1379.50 7633.00
1988 1879.00 1657.00 1183.50 659.50 150.50 30.00 10.00 47.53 a 224.50 711.50 1081.00 1584.50 9218.53
1989 536.50 v 0.00 z 1300.50 731.50 332.00 123.50 3.50 26.50 249.50 611.00 1214.50 1843.50 6436.00
1990 1375.50 1361.50 1035.00 697.50 374.50 83.00 22.50 55.00 231.50 719.00 1016.00 1707.50 8678.50
1991 1921.50 1334.50 1171.00 616.00 275.50 33.00 30.00 28.00 317.50 736.00 1311.00 1548.50 9322.50
1992 1538.00 1278.00 1148.00 835.50 284.00 170.00 134.00 124.50 297.00 674.00 1154.00 1647.00 9284.00
1993 1842.00 1481.00 1157.50 754.50 376.00 180.00 49.50 47.50 401.00 746.00 1269.00 1599.50 9903.50
1994 2200.00 1711.00 1135.00 741.50 308.00 76.50 34.00 84.50 188.50 531.50 963.50 1400.00 9374.00
1995 1726.50 1595.50 1165.50 886.00 343.50 55.00 37.00 11.00 292.50 679.00 1404.00 1739.00 9934.50
1996 2116.50 1637.00 1476.00 911.00 419.50 104.50 44.00 22.00 297.50 663.00 1351.50 1766.00 10808.50
1997 1952.50 1465.00 1291.00 788.00 501.00 39.00 52.00 86.00 194.00 641.50 1204.00 1274.00 9488.00
1998 1635.00 1023.00 1183.00 575.50 188.00 146.50 15.50 12.00 159.00 583.50 1038.62 a 1480.00 8039.62
1999 1848.00 1244.00 1103.00 655.50 271.80 c 118.45 a 16.50 38.00 292.78 c 686.00 869.48 a 1381.50 8525.01
2000 1755.12 a 1257.50 964.62 a 0.00 z 293.00 159.31 a 26.87 a 32.55 a 309.00 388.00 i 1051.61 b 0.00 z 5849.57
2001 1513.83 a 1663.00 1255.00 730.34 a 274.35 a 112.76 a 27.26 b 16.02 a 287.00 673.73 a 786.00 1356.50 8695.79
2002 1549.50 1226.00 1519.00 818.50 525.00 69.50 13.50 33.50 208.50 876.50 1190.00 1387.00 9416.50
2003 1769.50 1604.50 1274.50 697.50 336.00 98.50 25.50 9.50 253.00 617.50 1224.50 1443.50 9354.00
2004 2004.50 1475.50 1154.50 720.00 484.00 167.50 68.00 195.00 164.50 598.00 963.00 1621.00 9615.50
2005 1937.00 1351.00 1295.00 533.00 419.00 50.00 57.00 53.00 176.00 586.00 1033.50 1485.00 8975.50
2006 1292.50 1551.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 752.50 1044.00 1326.50 5966.50
2007 1636.50 1663.50 1165.27 c 762.00 256.00 0.00 z 16.50 67.50 271.00 539.00 1068.50 1700.00 9145.77
2008 1833.00 1699.00 1371.50 821.50 470.00 130.00 21.50 36.00 238.50 633.50 1064.50 1906.50 10225.50
2009 2062.50 1469.50 1278.00 739.00 407.00 170.50 0.00 z 102.50 98.00 814.50 871.00 1659.00 9671.50
2010 1772.50 1480.50 909.50 508.50 353.50 110.50 6.00 33.00 349.50 508.50 1062.50 1680.00 8774.50
2011 1941.50 1485.50 1335.00 720.50 371.00 130.50 9.50 11.50 279.50 499.00 1000.00 1369.00 9152.50
2012 1519.50 1316.50 826.00 661.50 269.00 55.00 1.00 37.50 292.00 704.00 1079.00 1577.50 8338.50
2013 1748.00 1544.00 1422.50 45.00 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 4714.50
Period of Record Statistics
MEAN 1816.06 1515.00 1253.65 735.43 374.53 119.07 33.66 69.90 276.63 626.35 1103.44 1609.24 9529.23
S.D. 206.15 189.84 176.52 123.16 103.70 52.69 23.39 42.25 68.42 116.42 139.39 176.95 641.62
SKEW -0.01 0.00 -0.20 0.24 0.38 0.49 1.12 0.60 0.25 0.13 0.26 -0.01 -0.10
MAX 2359.00 2098.50 1709.00 1123.00 786.50 265.50 134.00 195.00 477.00 1001.50 1423.50 1994.50 11064.00
MIN 1292.50 1023.00 826.00 447.00 109.00 24.50 0.00 1.00 98.00 264.00 786.00 1266.50 7633.00
NO YRS 114 114 114 111 112 110 112 113 114 114 115 113 105