TWO HARBORS, MINNESOTA

Monthly Total Heating Degree Days

(218419)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1894 0.00 z 350.00 u 1088.00 715.00 508.00 136.00 55.50 94.50 225.00 538.50 1146.72 a 1167.00 5674.22
1895 1745.00 1413.00 1255.00 664.00 454.50 232.50 113.50 52.50 221.50 706.50 984.50 1280.00 9122.50
1896 1505.50 1378.50 1325.00 787.50 402.50 197.00 102.00 107.50 361.50 701.00 1229.00 1295.00 9392.00
1897 1665.00 1280.00 1261.50 753.50 561.50 333.50 69.50 96.50 164.00 524.50 1125.50 1538.50 9373.50
1898 0.00 z 1259.00 1075.00 771.50 483.00 307.50 99.00 97.00 264.00 689.00 1053.00 1553.50 7651.50
1899 1719.50 1603.00 1557.50 802.00 592.50 291.00 126.00 97.50 330.50 552.50 712.00 1373.50 9757.50
1900 1448.50 1603.00 1390.50 775.50 638.50 181.50 132.50 34.00 281.00 460.50 1212.00 1421.00 9578.50
1901 1648.17 a 1545.50 1313.00 762.93 a 526.50 298.00 124.50 69.23 a 337.00 641.50 1160.50 1623.50 10050.33
1902 1584.00 1383.41 a 1132.00 848.50 555.00 360.50 101.50 205.00 448.50 678.56 d 966.50 1546.50 9809.96
1903 1673.00 1528.50 1157.13 e 820.50 587.00 301.00 136.00 215.00 388.97 a 616.50 1138.50 1699.32 a 10261.42
1904 1802.50 1829.50 1368.50 893.50 518.00 306.00 136.40 a 127.50 369.00 631.50 881.00 1528.82 a 10392.22
1905 1751.00 1510.50 1138.50 729.50 431.00 140.00 21.00 19.00 119.00 635.00 923.50 1323.50 8741.50
1906 1410.00 1425.00 1355.50 669.00 603.00 280.50 57.00 48.00 128.50 652.50 949.50 1432.00 9010.50
1907 1805.00 1393.50 1184.00 972.50 752.00 256.00 68.50 157.00 331.00 660.50 985.50 1338.00 9903.50
1908 1463.00 1357.50 1217.00 723.50 506.00 254.50 120.50 89.50 175.00 571.00 939.00 1414.50 8831.00
1909 1589.00 1402.00 1162.00 915.50 588.00 255.00 107.00 60.50 263.00 647.50 870.00 1471.50 9331.00
1910 1503.50 1463.50 834.00 698.00 570.50 188.00 39.00 69.50 248.00 518.50 1123.50 1500.00 8756.00
1911 1719.00 1228.00 1038.50 818.50 458.00 197.00 91.50 105.50 315.00 652.00 1211.00 1272.50 9106.50
1912 2111.00 1529.50 1342.50 761.50 556.00 241.50 122.50 182.00 254.50 568.50 926.00 1332.00 9927.50
1913 1658.00 1486.00 1336.00 729.00 585.00 243.50 145.00 63.00 282.50 659.50 804.50 1096.00 9088.00
1914 1397.00 1625.50 1156.00 883.00 413.50 278.50 93.00 92.00 241.03 a 490.00 995.00 1613.00 9277.54
1915 1608.50 1177.50 1143.00 587.00 573.50 364.50 180.50 135.50 257.50 599.50 957.50 1290.50 8875.00
1916 1664.50 1557.50 1324.50 718.00 513.50 344.50 76.00 38.50 289.00 616.50 983.00 1613.00 9738.50
1917 1751.00 1648.50 1206.00 880.50 615.00 362.00 115.50 167.00 318.50 817.50 820.50 1716.50 10418.50
1918 1832.00 1473.00 958.50 809.00 467.00 226.00 37.50 39.50 342.00 512.00 829.00 1172.50 8698.00
1919 1342.00 1272.50 1166.00 736.50 466.00 245.00 19.00 22.50 188.50 666.00 1139.50 1701.50 8965.00
1920 1792.00 1402.00 1135.00 899.00 443.50 227.00 85.50 44.00 130.50 379.50 991.00 1284.50 8813.50
1921 1374.50 1176.00 1130.50 633.00 448.00 152.00 0.00 59.00 182.50 567.50 1138.00 1436.50 8297.50
1922 1620.50 1481.00 1123.00 777.00 429.00 239.50 114.00 72.50 209.50 555.50 838.00 1524.50 8984.00
1923 1496.50 1557.00 1448.50 805.50 486.00 186.00 95.07 a 97.50 193.50 554.00 799.00 1150.50 8869.07
1924 1810.50 1252.00 1146.00 801.50 564.50 254.50 123.50 130.50 299.50 428.00 1034.00 1774.50 9619.00
1925 1589.00 1326.50 1167.00 691.50 528.00 215.50 80.00 27.50 228.00 869.50 1064.00 1578.00 9364.50
1926 1594.50 1321.00 1365.00 868.00 547.50 281.50 123.00 90.00 408.50 706.50 1178.00 1559.00 10042.50
1927 1671.00 1319.50 1062.00 819.50 645.00 415.50 174.00 171.00 221.50 581.50 1058.50 1673.50 9812.50
1928 1538.00 1374.00 1181.50 925.50 439.50 349.00 127.50 81.50 354.50 575.00 873.00 1242.50 9061.50
1929 1939.50 1516.50 1087.50 762.50 572.50 286.50 59.00 44.50 303.00 493.00 1117.50 1514.00 9696.00
1930 1815.00 1231.50 1158.50 740.00 499.00 154.00 72.50 29.00 261.50 701.00 939.00 1334.00 8935.00
1931 1298.00 1020.50 1104.50 690.00 478.00 250.00 31.50 83.00 180.50 403.50 796.00 1075.50 7411.00
1932 1351.00 1339.00 1369.50 777.50 471.00 212.00 48.50 17.00 235.50 641.00 1083.50 1503.50 9049.00
1933 1366.50 1502.00 653.00 l 773.00 481.00 171.50 70.50 21.50 151.00 688.50 1127.00 1565.50 7918.00
1934 1372.00 1457.00 1261.00 729.00 350.50 223.00 48.50 132.50 308.50 495.00 837.50 1505.00 8719.50
1935 1702.00 1147.00 1168.50 853.50 571.50 287.50 74.50 27.00 y 291.00 636.50 1142.00 1391.50 9265.50
1936 1746.00 1825.50 1202.00 904.00 461.50 255.50 70.50 52.50 210.00 720.50 1119.00 1347.00 9914.00
1937 1789.50 1396.00 1243.50 803.50 470.50 237.50 93.00 22.00 248.50 665.00 1051.00 1479.50 9499.50
1938 1661.50 1284.00 1004.50 803.50 543.00 235.50 117.50 22.00 206.50 448.00 1030.00 1397.50 8753.50
1939 1419.50 1533.00 1273.50 868.00 492.50 301.50 99.00 31.00 244.00 644.50 871.00 1097.00 8874.50
1940 1654.50 1252.50 1322.50 836.00 570.00 252.50 125.50 77.50 169.50 441.00 1031.00 1349.50 9082.00
1941 1474.50 1316.50 1190.50 677.50 427.50 271.50 55.00 52.50 216.50 549.00 924.50 1211.50 8367.00
1942 1395.00 1306.50 1024.50 632.00 534.00 307.50 63.00 82.50 321.00 567.50 1004.50 1525.00 8763.00
1943 1749.50 1333.50 1406.50 765.50 512.00 266.00 53.00 59.50 368.00 556.00 1093.00 1361.50 9524.00
1944 1248.00 1364.50 1248.00 833.00 486.00 286.50 109.50 75.50 255.50 506.50 843.00 1443.50 8699.50
1945 1616.50 1334.50 935.00 833.00 600.00 365.50 119.00 64.00 295.00 650.00 1068.00 1532.50 9413.00
1946 1556.50 1471.00 925.00 691.50 557.00 280.00 76.50 84.50 286.00 585.00 210.00 u 0.00 z 6513.00
1947 0.00 z 0.00 z 405.50 s 870.50 597.50 396.00 140.00 78.00 324.50 410.50 1117.50 1395.00 5329.50
1948 1680.00 1478.00 1229.50 753.00 469.00 249.50 91.00 65.00 167.50 528.50 912.00 1387.50 9010.50
1949 1457.00 1437.50 1232.00 697.50 482.64 b 242.00 55.50 38.00 322.00 576.08 a 914.50 1437.00 8891.72
1950 1793.50 1354.00 1389.00 974.50 621.50 263.00 245.50 239.00 249.50 509.50 1098.00 1546.50 10283.50
1951 1640.00 1363.50 1290.63 a 746.50 365.50 314.00 101.78 a 129.50 347.00 618.93 b 1143.00 1495.00 9555.35
1952 1601.84 b 1212.42 c 1225.00 633.10 a 444.50 234.31 a 112.00 81.00 254.50 670.50 941.90 a 1194.50 8605.58
1953 1457.52 a 1299.50 1118.00 811.03 a 285.00 n 242.50 80.08 a 47.00 279.00 483.37 d 830.00 1378.50 8026.50
1954 1175.50 i 1073.50 1188.85 a 768.00 572.98 a 198.00 76.50 70.35 e 268.00 618.50 863.00 1260.50 6958.18
1955 1533.47 a 1441.48 a 1429.32 c 635.00 424.00 194.50 28.50 5.17 a 239.50 550.25 a 1096.15 d 455.00 u 7577.34
1956 1437.37 a 1407.00 1269.50 818.50 506.50 242.50 139.50 a 98.50 344.48 a 429.87 a 985.34 a 1382.71 b 9061.77
1957 1820.06 e 1338.00 1195.50 766.03 a 482.57 a 265.86 a 53.50 46.50 291.21 a 554.00 981.00 1333.53 b 9127.76
1958 1371.50 1435.54 b 714.50 k 676.11 c 436.58 a 284.00 95.00 80.00 210.50 548.50 937.76 a 1702.93 a 7778.42
1959 1808.00 1438.89 a 1098.50 716.79 b 436.77 c 158.50 38.00 30.00 231.50 692.50 1235.00 1151.00 9035.44
1960 1556.00 1341.77 a 1328.50 735.00 a 511.00 229.00 89.00 49.50 239.00 560.00 693.00 h 1505.50 8144.27
1961 1631.00 1179.11 a 1016.00 833.00 461.00 175.00 67.00 7.00 269.00 536.50 966.50 1448.00 8589.11
1962 1746.00 1448.22 a 1157.00 841.00 525.00 310.50 116.77 a 90.00 286.00 532.00 886.00 1461.50 9399.99
1963 1884.00 1540.52 a 1148.50 771.72 a 249.00 p 230.00 33.50 72.50 190.50 287.00 844.00 1604.00 8606.24
1964 1354.00 1281.00 1247.00 815.50 367.00 299.50 57.50 192.00 340.00 0.00 z 996.50 1576.50 8526.50
1965 1735.50 1562.00 1392.00 796.50 476.50 286.00 133.50 126.50 0.00 z 599.16 b 1037.00 1251.50 9396.16
1966 1863.00 1425.00 1098.00 839.50 521.83 a 191.50 18.71 b 113.00 234.00 632.40 a 1115.69 a 1494.20 a 9546.83
1967 1568.00 1589.00 1178.00 844.50 612.00 297.00 97.00 114.50 250.00 620.00 b 1035.00 1388.50 9593.50
1968 1604.00 1431.50 992.50 726.50 614.50 342.50 151.00 164.00 223.50 556.00 934.50 1425.00 9165.50
1969 1604.50 1268.00 1249.00 760.50 484.50 405.00 147.50 30.50 226.50 680.45 a 988.50 1275.00 9119.95
1970 1730.00 1382.50 1248.00 827.50 623.00 294.50 42.00 29.50 258.00 620.00 975.00 1432.00 9462.00
1971 1770.50 1359.50 1230.50 780.50 567.00 301.50 165.69 b 157.00 225.00 449.50 960.00 1417.50 9384.19
1972 1774.50 1540.00 1346.50 891.50 558.50 310.00 195.00 144.50 364.00 681.00 1016.50 1558.00 10380.00
1973 1420.00 1258.50 963.00 771.50 569.00 315.00 77.00 47.00 266.50 493.00 964.00 1417.00 8561.50
1974 1620.50 1384.50 1239.50 813.00 616.00 263.00 91.00 112.50 414.50 0.00 z 934.00 1192.00 8680.50
1975 1571.50 1512.00 1094.00 i 1025.50 449.50 300.56 c 53.50 78.00 325.00 521.00 852.32 b 1453.50 8142.38
1976 1664.50 1116.50 1136.50 704.50 522.50 232.00 44.50 70.50 298.50 785.50 1135.00 1717.40 a 9427.90
1977 1857.00 1235.23 b 1010.00 733.50 479.50 301.00 109.50 179.28 a 158.00 s 567.50 993.50 1485.50 8951.51
1978 1656.50 1410.50 1152.00 828.62 a 523.00 299.00 145.50 94.50 224.00 506.50 1011.50 1490.50 9342.12
1979 1853.00 1610.50 1237.00 892.50 642.50 315.00 182.00 129.00 247.50 651.50 994.50 1229.00 9984.00
1980 1560.00 1403.50 1280.00 663.50 422.00 258.50 38.50 47.00 286.00 662.00 706.00 f 985.00 k 6621.00
1981 1456.50 1223.00 942.50 662.50 471.50 216.00 64.50 11.50 170.00 668.00 819.50 1401.00 8106.50
1982 1923.00 1383.41 a 1172.00 809.50 501.00 312.50 109.00 125.50 267.00 539.50 1026.00 1217.50 9385.91
1983 1365.66 c 1097.50 1098.50 801.00 655.00 351.00 54.50 4.50 263.50 564.50 902.00 1722.50 8880.16
1984 1616.13 a 1091.50 1260.50 685.00 484.00 190.00 80.50 40.50 320.50 545.50 951.50 1398.00 8663.63
1985 1624.00 1408.00 945.50 666.50 471.50 297.50 73.00 138.98 a 291.96 b 606.50 1138.50 1683.82 a 9345.76
1986 1435.50 1302.50 1041.50 648.62 a 488.25 a 245.00 114.00 71.50 299.00 589.00 1069.50 1288.50 8592.87
1987 1372.00 1030.00 991.00 617.07 a 479.50 105.00 36.50 52.00 177.78 c 678.50 854.00 1190.00 7583.35
1988 1632.67 a 1515.00 1118.00 727.76 a 453.00 200.50 25.50 58.00 226.50 695.50 955.00 1417.00 9024.43
1989 1387.50 1540.00 1348.00 819.50 522.50 346.00 64.50 42.00 275.50 639.50 1091.50 1681.50 9758.00
1990 1311.50 1296.00 1086.50 749.00 569.00 228.50 50.50 75.50 175.50 603.50 877.50 1434.00 8457.00
1991 1627.00 1140.50 1133.50 722.00 521.32 a 286.50 145.00 39.00 271.00 687.00 1173.50 1360.00 9106.32
1992 1387.00 1168.00 1106.00 811.00 488.50 361.00 161.50 126.00 313.00 646.00 991.50 1353.00 8912.50
1993 1490.00 1288.50 1137.50 816.00 523.50 350.00 154.50 51.50 421.50 722.50 1073.00 1356.50 9385.00
1994 1882.00 1517.50 1038.50 717.50 452.50 244.00 91.00 105.00 194.00 494.50 856.50 1226.00 8819.00
1995 1455.00 1365.50 1118.50 891.50 474.00 278.00 88.50 23.50 282.50 587.00 1204.00 1507.50 9275.50
1996 1762.50 1429.00 1344.00 887.00 591.50 320.00 215.00 57.50 233.00 551.50 1156.50 1449.00 9996.50
1997 1648.50 1273.50 1193.50 858.50 617.00 229.50 141.50 111.50 171.00 626.50 1051.00 1114.50 9036.50
1998 1351.50 942.00 1075.00 654.00 387.50 235.50 36.00 2.50 122.50 479.50 842.00 1288.50 7416.50
1999 1592.50 1091.50 1052.50 731.00 445.50 235.50 65.50 49.00 254.50 593.00 792.00 1238.50 8141.00
2000 1519.50 1147.50 939.50 762.50 435.50 298.50 66.65 a 16.50 259.00 547.00 939.83 a 1659.00 8590.98
2001 1313.50 1418.00 1127.00 726.50 438.50 271.00 64.50 35.50 227.00 561.50 686.00 1174.50 8043.50
2002 1264.00 1097.00 1288.50 785.50 603.50 243.50 19.50 89.00 199.50 760.50 1043.50 1242.00 8636.00
2003 1571.50 1434.50 1200.00 802.50 516.50 329.50 84.50 18.50 212.00 587.50 1002.00 1217.00 8976.00
2004 1708.00 1238.00 1065.50 736.50 590.00 293.00 93.00 155.00 160.50 545.50 829.50 1417.00 8831.50
2005 1619.50 1153.50 1177.00 694.00 542.00 226.00 59.50 61.50 141.00 509.50 903.00 1306.00 8392.50
2006 1141.00 1291.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 686.00 891.50 1158.50 5168.50
2007 1408.50 1469.50 1070.50 753.00 495.50 243.50 85.50 59.50 219.50 472.00 946.50 1454.00 8677.50
2008 1542.00 1417.00 1195.00 766.00 541.50 225.50 62.50 52.00 216.50 540.50 969.50 1611.50 9139.50
2009 1749.50 1265.00 1184.50 751.50 443.00 284.00 111.50 127.50 112.00 673.00 738.00 1443.00 8882.50
2010 1471.00 1203.00 0.00 z 555.00 443.00 193.00 7.50 56.50 320.00 488.00 941.50 1432.50 7111.00
2011 1634.00 1292.50 1172.83 a 766.00 577.00 316.00 38.50 32.07 b 290.40 e 507.76 b 873.00 1180.07 a 8680.13
2012 1324.00 1098.50 814.50 696.50 400.00 162.50 0.00 22.00 242.50 681.00 944.00 1282.00 7667.50
2013 1480.77 a 1311.50 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 0.00 z 2792.27
Period of Record Statistics
MEAN 1592.49 1361.97 1176.30 773.32 513.29 263.93 89.62 78.44 258.19 588.25 985.73 1410.02 9110.13
S.D. 176.80 159.01 133.92 83.42 71.43 59.50 45.84 49.69 68.35 92.91 120.42 161.54 617.33
SKEW 0.02 0.03 -0.06 0.16 0.30 -0.01 0.55 0.87 0.22 -0.08 -0.01 0.07 -0.26
MAX 2111.00 1829.50 1557.50 1025.50 752.00 415.50 245.50 239.00 448.50 869.50 1235.00 1774.50 10418.50
MIN 1141.00 942.00 814.50 555.00 350.50 105.00 0.00 2.50 112.00 287.00 686.00 1075.50 7411.00
NO YRS 116 118 113 118 116 118 118 117 116 117 116 116 99