GRAND MARAIS, MINNESOTA

Monthly Total Heating Degree Days

(213282)

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
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 0.00 z 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 0.00 z 0.00 z 0.00
1909 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
1910 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
1911 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
1912 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
1913 0.00 z 0.00 z 0.00 z 0.00 z 297.50 m 326.50 199.00 130.00 328.50 0.00 z 0.00 z 694.50 j 984.00
1914 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 68.00 l 0.00 z 282.50 k 0.00 z 661.00 q 0.00
1915 1575.50 944.00 0.00 z 344.00 0.00 z 0.00 z 0.00 z 88.50 v 0.00 z 0.00 z 0.00 z 0.00 z 2863.50
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 210.00 f 0.00 z 905.00 1506.82 c 2411.82
1917 1548.97 a 1537.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 388.50 869.50 910.50 1789.65 e 7044.12
1918 0.00 z 1494.37 a 1098.43 a 805.50 537.50 375.52 a 166.37 a 118.00 431.00 582.28 a 897.00 1272.00 7777.97
1919 1449.00 1325.00 1289.50 819.50 591.00 318.00 80.50 60.50 286.50 764.00 1068.62 a 1686.50 9738.62
1920 0.00 z 0.00 z 1168.18 a 997.76 a 583.00 367.00 242.50 117.50 203.89 c 511.00 1049.00 1215.00 6454.83
1921 1460.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 111.00 241.00 626.50 1139.00 1426.50 5004.00
1922 1626.47 a 1497.00 1175.50 859.50 530.50 417.00 275.50 141.00 268.50 0.00 z 0.00 z 0.00 z 6790.97
1923 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 647.50 808.00 1136.50 2592.00
1924 1831.30 d 1292.05 a 1173.00 842.50 641.50 421.00 292.00 248.00 402.50 507.50 1032.00 1692.60 a 10375.95
1925 1493.17 a 1369.50 1206.00 735.00 662.00 329.50 160.00 60.00 223.00 823.00 1046.00 1470.00 9577.17
1926 1435.54 e 1297.33 a 1369.50 864.00 616.38 a 355.71 b 266.50 114.50 430.00 746.07 a 1167.00 1459.38 e 10121.92
1927 1653.00 1301.50 645.00 n 851.00 696.00 440.50 302.00 246.50 248.04 b 589.00 1114.50 1517.34 c 8959.38
1928 1398.88 c 1357.50 1233.28 a 998.50 577.00 444.00 272.50 135.50 434.46 b 659.50 923.79 a 1255.50 9690.42
1929 1842.36 b 1517.19 a 1143.50 842.00 693.00 450.50 163.00 143.50 367.50 594.00 1127.00 1494.50 10378.05
1930 1799.50 1288.00 1208.00 845.19 d 596.00 305.17 a 177.50 56.50 315.58 d 723.50 970.18 b 1329.00 9614.12
1931 1353.50 1080.50 1130.00 811.00 577.50 381.72 a 100.50 118.50 213.00 469.00 796.50 1120.00 8151.72
1932 1318.00 1379.00 1382.50 835.50 546.00 346.50 121.50 49.50 339.50 737.00 1101.50 1478.50 9635.00
1933 1361.00 1482.50 1253.00 841.00 579.50 327.50 194.50 84.50 208.00 734.00 1184.50 1621.50 9871.50
1934 1420.00 1542.50 1271.52 a 860.50 488.50 341.50 166.50 204.00 371.50 576.50 895.50 1465.00 9603.52
1935 1716.50 1182.74 a 1191.50 872.00 622.50 394.50 157.50 108.00 383.50 672.00 1120.50 1364.00 9785.24
1936 1710.00 1797.50 1188.50 925.50 564.00 340.00 117.50 80.00 246.00 771.00 1160.50 1293.00 10193.50
1937 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 746.00 1058.00 886.50 l 1804.00
1938 1163.00 h 1297.50 1111.00 901.50 701.50 437.50 332.00 136.00 334.29 b 559.50 1074.50 806.50 j 6885.29
1939 1047.00 j 1595.50 1404.00 979.00 632.50 416.50 268.50 117.50 356.50 733.00 920.00 1163.00 8586.00
1940 1616.50 1257.00 1351.00 896.00 656.50 371.00 246.50 141.00 261.50 593.50 1090.50 1376.00 9857.00
1941 1497.00 1314.00 1261.50 788.00 569.50 413.00 151.00 153.00 344.50 662.00 982.50 1279.00 9415.00
1942 1471.00 976.00 h 1066.50 753.50 620.00 415.00 181.50 155.00 384.50 618.50 1059.00 1539.00 8263.50
1943 1740.00 1358.50 1460.50 863.00 661.16 b 438.10 a 261.71 e 170.00 457.50 613.00 1032.50 1347.98 a 10403.95
1944 1202.50 1382.00 1320.00 869.00 571.50 379.00 242.00 157.00 303.50 644.50 882.50 1452.50 9406.00
1945 1667.50 1314.00 982.50 903.50 683.50 441.00 179.00 105.00 353.50 713.00 1070.00 1530.00 9942.50
1946 1580.50 1495.00 1006.00 806.50 631.00 414.00 192.00 136.50 329.00 555.50 996.00 1443.50 9585.50
1947 1522.00 1483.00 1226.50 974.00 734.50 539.50 360.00 215.00 356.00 530.50 1032.00 1358.00 10331.00
1948 1640.00 1419.00 1165.00 748.00 531.50 360.50 204.50 144.00 186.00 560.00 874.04 d 1244.13 a 9076.67
1949 1451.00 1397.41 a 1284.95 a 794.46 b 570.00 372.50 191.50 97.13 a 441.00 653.50 981.50 1395.00 9629.96
1950 1719.00 1307.00 1376.00 971.50 664.00 270.00 l 444.00 283.50 332.31 d 659.50 1155.56 c 1166.00 g 8912.36
1951 1239.50 h 1400.61 e 1036.00 g 804.00 518.73 a 350.50 f 146.00 k 184.45 a 399.00 e 698.00 822.50 j 1501.20 d 5506.00
1952 1105.50 j 876.00 h 750.50 l 398.00 q 607.27 c 0.00 z 0.00 z 69.00 k 314.00 788.36 b 954.11 b 926.00 f 2663.74
1953 1172.50 f 1321.70 a 1143.00 808.00 618.28 d 322.00 137.50 86.00 357.78 c 532.17 a 859.82 b 1123.50 f 6186.25
1954 1700.50 1098.00 1239.00 827.68 b 674.50 267.00 e 125.66 c 101.00 g 227.50 h 534.00 g 899.42 d 1010.00 f 6831.76
1955 1123.50 i 1037.00 g 942.50 j 429.00 i 503.23 a 222.32 b 45.97 b 17.00 f 284.46 b 588.43 d 827.00 g 1512.28 a 3156.69
1956 1025.00 i 1365.23 c 938.50 h 676.00 g 622.00 254.48 a 198.06 d 110.50 i 430.34 a 502.31 d 639.50 k 1383.38 c 4755.80
1957 1808.73 e 1368.35 e 1220.48 d 802.50 431.50 g 288.00 f 134.00 125.00 370.50 625.50 1041.50 1384.50 8881.06
1958 1449.50 1466.00 1091.00 714.50 531.50 357.50 134.50 137.00 297.50 571.00 986.00 1711.00 9447.00
1959 1848.00 1492.50 1185.00 818.00 481.50 230.50 72.50 74.00 286.50 723.00 1278.00 1191.00 9680.50
1960 1569.00 1366.50 1360.00 804.50 503.00 287.00 135.50 79.00 288.00 630.50 955.00 1594.00 9572.00
1961 1698.50 1223.50 1083.00 824.50 528.50 267.00 97.50 55.50 318.00 610.50 987.50 1468.50 9162.50
1962 1788.50 1498.00 1136.84 b 862.00 463.00 309.00 156.11 c 127.50 341.50 565.00 920.50 1490.00 9657.95
1963 1905.00 1589.50 1229.50 780.00 598.62 b 275.00 101.04 d 122.00 277.00 334.50 852.50 1620.50 9685.16
1964 1374.00 1323.00 1333.50 813.00 382.50 331.00 73.50 194.00 396.50 692.50 998.00 1583.00 9494.50
1965 1708.00 1557.50 1356.50 823.50 458.00 275.50 180.00 171.00 477.50 613.00 1059.00 1258.50 9938.00
1966 1800.50 1400.00 1134.50 857.50 593.50 261.00 44.84 c 162.50 275.50 719.00 1138.00 1489.00 9875.84
1967 1598.50 1648.50 1243.00 852.50 639.50 301.00 161.50 179.05 b 305.00 688.00 1104.00 1391.50 10112.05
1968 1627.50 1522.00 1067.00 751.00 545.00 319.82 b 167.50 212.00 282.00 580.00 997.50 1445.50 9516.82
1969 1580.50 1304.50 1291.50 733.50 523.00 451.50 148.50 52.00 311.50 746.00 1045.00 1328.00 9515.50
1970 1777.50 1497.00 1312.00 832.00 587.50 235.00 29.00 62.50 334.00 634.50 1025.00 1403.00 9729.00
1971 1830.50 1388.00 1260.50 804.50 580.50 249.50 159.00 162.50 273.00 512.00 1030.50 1434.00 9684.50
1972 1878.50 1583.50 1377.50 907.50 438.50 281.50 191.00 146.50 413.00 720.00 1031.50 1582.00 10551.00
1973 1425.00 1333.50 986.50 826.50 604.50 407.00 198.00 83.00 348.00 555.00 959.50 1418.50 9145.00
1974 1620.50 1423.00 1251.37 a 851.00 664.00 384.00 167.50 170.00 459.50 667.00 960.00 1184.50 9802.37
1975 1494.00 1306.00 1281.50 905.00 519.50 374.00 139.00 134.00 368.00 549.50 909.00 1431.50 9411.00
1976 1625.43 a 1185.00 1223.00 770.50 560.50 336.50 92.00 82.50 351.00 754.50 1159.00 1708.00 9847.93
1977 1835.50 1260.00 983.50 763.50 535.00 383.50 198.00 261.00 371.50 576.00 964.50 1424.00 9556.00
1978 1628.50 1383.50 1180.50 855.50 547.50 401.50 216.50 150.35 a 256.50 582.80 a 1046.50 1549.50 9799.15
1979 1821.00 1640.00 1256.00 901.50 673.00 370.00 251.00 185.50 290.00 673.00 1008.00 1215.50 10284.50
1980 1527.00 1443.00 1296.00 658.50 521.00 361.00 96.50 77.50 349.00 721.00 961.50 1519.00 9531.00
1981 1540.50 1281.00 1083.50 777.00 610.50 388.00 136.50 40.50 257.50 732.00 863.00 1345.00 9055.00
1982 1864.50 1376.50 1234.00 896.00 547.50 389.00 237.00 220.00 345.50 585.00 1055.50 1270.00 10020.50
1983 1389.50 1130.50 1134.50 863.50 676.00 422.50 141.50 15.50 b 325.86 a 644.50 939.50 1740.00 9423.36
1984 1647.00 1132.00 1312.00 709.00 589.00 368.00 179.00 63.00 373.50 592.00 999.50 1453.00 9417.00
1985 1660.50 1439.50 1013.00 765.00 541.50 373.50 207.00 207.00 329.46 b 669.50 1164.00 1687.50 10057.46
1986 1494.00 1311.50 1113.00 694.00 530.62 a 341.90 a 203.00 136.50 342.00 658.00 1097.50 1241.50 9163.51
1987 1363.50 1039.50 1041.50 669.83 a 527.50 244.00 60.50 85.00 215.69 a 705.50 892.00 1189.50 8034.02
1988 1630.00 1526.64 a 1147.00 772.00 536.50 288.50 54.00 63.00 241.50 724.50 948.50 1431.00 9363.14
1989 1370.50 1518.00 1349.00 858.00 587.00 454.00 166.50 100.50 312.50 663.50 1124.50 1697.50 10201.50
1990 1328.50 1331.50 1129.00 836.50 655.00 339.00 145.50 100.50 239.50 660.50 913.50 1458.00 9137.00
1991 1665.00 1206.50 1156.50 736.50 584.00 358.00 223.00 51.50 317.00 710.00 1137.50 1375.50 9521.00
1992 1395.50 1211.00 1179.50 844.00 569.88 a 423.00 300.50 160.00 335.00 645.00 1031.50 1368.50 9463.38
1993 1495.50 1308.00 1189.50 853.00 600.00 394.00 220.00 64.00 457.50 761.00 1075.00 1341.00 9758.50
1994 1856.00 1519.50 1109.50 814.50 540.00 323.00 166.50 149.00 221.50 518.22 a 876.00 1175.50 9269.22
1995 1425.50 1363.50 1141.00 893.00 502.00 344.00 153.00 35.50 307.50 602.50 1204.50 1473.50 9445.50
1996 1746.00 1460.00 1346.43 a 915.00 659.50 380.50 237.50 85.00 226.00 598.00 1140.00 1437.00 10230.93
1997 1589.78 a 1299.00 1217.50 869.00 674.00 347.00 199.50 157.50 227.07 a 721.55 b 1028.00 1128.00 9457.90
1998 1341.50 964.50 1083.50 709.66 a 454.15 a 268.00 52.24 d 23.00 151.07 b 542.50 b 873.00 1312.00 7775.12
1999 1608.38 a 1110.67 a 1105.00 769.14 a 476.37 a 326.90 a 103.50 89.90 a 302.14 b 643.52 b 816.00 1245.34 b 8596.86
2000 1535.50 1180.50 969.78 a 836.00 482.88 e 397.50 b 138.43 b 33.58 a 293.33 c 482.50 f 917.68 b 1663.87 e 8449.06
2001 1313.00 1396.77 b 1183.96 e 767.14 b 541.97 b 347.59 a 168.20 d 57.98 d 234.00 e 616.68 c 759.44 c 1184.72 a 8571.45
2002 1319.00 1103.50 1357.50 887.50 662.00 315.50 40.50 176.00 239.50 760.00 1050.50 1220.00 9131.50
2003 1540.00 1429.00 1207.50 824.50 519.50 404.50 183.50 55.00 226.50 498.00 h 982.00 1191.00 8563.00
2004 1726.50 1214.50 1092.50 796.20 e 603.00 364.00 117.50 196.00 235.50 571.00 880.50 1423.42 a 9220.62
2005 1597.50 1150.00 1215.00 725.00 634.00 285.50 64.00 81.50 155.50 502.00 939.50 1291.50 8641.00
2006 1139.50 1280.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 735.00 952.50 1232.00 5339.00
2007 1489.55 a 1534.00 1103.71 b 764.00 370.00 173.50 76.50 100.00 273.50 520.00 1041.50 1489.50 8935.76
2008 1563.43 a 1475.50 1312.50 776.50 575.50 250.50 82.50 86.50 280.50 619.50 1017.50 1697.50 9737.93
2009 1788.00 1335.50 1255.00 796.50 515.00 0.00 z 159.00 177.00 224.00 746.00 808.00 1500.00 9304.00
2010 1529.50 1256.50 904.00 621.00 417.00 242.50 28.50 73.00 422.50 586.00 966.00 1479.73 a 8526.23
2011 1703.00 1369.00 1248.00 819.50 519.25 a 236.50 42.00 63.50 311.50 576.00 0.00 z 0.00 z 6888.25
2012 0.00 z 0.00 z 0.00 z 0.00 z 433.50 187.24 a 11.00 63.00 332.00 742.50 1048.00 1383.00 4200.24
2013 1629.50 1502.15 a 863.00 j 35.50 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 3131.65
Period of Record Statistics
MEAN 1584.95 1360.55 1199.46 818.28 572.08 346.81 165.10 121.62 315.62 640.76 1003.24 1416.50 9542.80
S.D. 171.11 154.78 114.05 88.58 74.47 68.82 79.21 57.96 72.42 89.61 104.08 159.99 547.20
SKEW -0.15 -0.22 -0.16 -1.67 -0.29 -0.20 0.54 0.49 0.09 -0.22 0.01 0.19 -0.92
MAX 1905.00 1797.50 1460.50 998.50 734.50 539.50 444.00 283.50 477.50 869.50 1278.00 1789.65 10551.00
MIN 1139.50 944.00 904.00 344.00 370.00 173.50 11.00 15.50 151.07 334.50 759.44 1120.00 7775.12
NO YRS 86 90 85 88 90 87 90 89 93 92 92 89 71