INTL FALLS INTL AP, MINNESOTA

Monthly Total Heating Degree Days

(214026)

Base Temperature = 65 F

File last updated on Apr 6, 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
1906 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 38.50 111.50 188.50 531.50 f 0.00 z 0.00 z 338.50
1907 2305.50 1739.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 179.00 404.48 a 0.00 z 0.00 z 0.00 z 4628.48
1908 1733.86 b 1537.00 0.00 z 0.00 z 0.00 z 247.50 135.88 a 260.00 348.10 a 727.50 0.00 z 1851.73 a 6841.58
1909 2198.00 1888.50 1493.50 1108.27 d 542.50 127.00 34.00 58.00 293.50 682.00 c 1081.00 0.00 z 9506.27
1910 0.00 z 1762.50 0.00 z 587.00 494.50 118.50 25.50 140.50 283.45 a 582.80 a 1274.00 1736.50 7005.25
1911 2081.00 1403.50 1133.50 761.00 301.00 46.50 95.00 144.00 357.50 680.45 a 1394.50 1481.00 9878.95
1912 2319.32 a 1676.50 1492.00 718.00 391.50 208.00 73.00 166.00 309.11 b 576.00 1009.00 1521.14 b 10459.56
1913 1993.50 1704.00 1535.50 592.50 465.00 88.50 74.06 d 51.00 298.00 809.50 944.00 1307.50 9863.06
1914 1649.00 1868.00 1286.50 875.50 301.00 94.50 17.00 112.63 a 252.50 438.50 1095.00 1806.00 9796.13
1915 1875.50 1257.50 1242.00 468.50 415.00 257.00 103.50 102.50 315.50 580.00 1070.50 1539.00 9226.50
1916 2001.50 1716.00 1445.12 a 793.50 501.50 192.00 0.00 d 78.50 261.43 b 0.00 z 0.00 z 0.00 z 6989.55
1917 1609.50 h 1915.50 1288.00 895.50 492.50 61.00 t 37.00 t 91.50 o 303.62 a 999.00 977.00 2011.50 8882.62
1918 2075.00 1600.00 998.00 692.50 440.64 c 0.00 z 47.00 g 44.00 452.59 a 628.50 955.00 1507.50 9393.73
1919 1561.00 1520.50 1336.50 692.50 307.50 84.50 k 8.50 55.00 304.50 949.50 1447.24 a 1959.50 10142.24
1920 2067.50 1608.50 1280.00 1065.00 423.00 147.93 a 26.00 37.00 111.00 403.00 1063.97 a 1466.50 9699.40
1921 1574.50 1286.00 1248.00 612.50 294.50 d 90.50 3.00 77.00 213.50 518.50 1349.50 1608.50 8876.00
1922 1798.50 1539.00 1288.50 569.00 i 179.50 109.00 79.00 79.50 182.50 622.50 1016.00 1808.00 8702.00
1923 1793.00 1670.15 a 1603.22 a 872.50 342.00 24.00 h 0.50 0.00 z 0.00 z 720.50 978.10 a 1367.00 9346.97
1924 2217.50 1559.87 c 1343.00 884.50 683.00 0.00 z 0.00 z 0.00 z 18.50 z 0.00 z 228.00 z 2150.00 8837.87
1925 1921.00 1588.00 1320.08 a 639.50 471.50 f 0.00 z 0.50 z 0.00 z 0.00 z 980.00 1168.45 a 1713.00 9330.03
1926 1757.70 a 1431.11 a 1402.23 a 962.88 d 474.50 263.00 79.10 b 188.00 545.89 b 882.00 1475.00 0.00 z 9461.43
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 0.00 z 0.00
1932 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
1933 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
1934 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
1935 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
1936 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
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 0.00 z 0.00 z 0.00 z 0.00
1938 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
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 0.00 z 0.00 z 0.00
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 48.57 a 53.96 d 220.50 627.00 1098.00 1698.00 3746.03
1949 1879.50 1797.00 1492.50 698.50 434.50 132.50 58.00 66.50 422.50 717.00 1087.50 1798.00 10584.00
1950 2264.00 1620.50 1565.00 1065.50 545.50 162.00 g 157.00 239.00 314.50 625.00 1378.50 1929.50 11704.00
1951 2023.50 1549.00 1524.00 880.50 325.50 197.50 87.50 175.00 433.00 767.50 1388.00 1849.50 11200.50
1952 1992.00 1409.00 1401.00 610.00 427.50 119.00 66.00 129.00 330.50 870.50 1126.50 1481.50 9962.50
1953 1886.50 1583.00 1280.00 885.50 483.00 172.50 81.50 45.50 399.00 512.00 982.00 1698.50 10009.00
1954 2157.50 1248.50 1495.50 925.50 623.50 136.50 53.50 136.50 412.50 751.50 1063.00 1507.00 10511.00
1955 1930.50 1695.50 1679.50 560.00 351.00 115.50 26.00 46.50 a 389.50 660.00 1426.00 1925.00 10805.00
1956 1759.00 1726.00 1533.00 980.00 585.00 80.50 119.50 118.00 487.50 540.50 1146.00 1724.00 10799.00
1957 2179.50 1648.00 1394.00 819.00 431.50 248.50 22.50 136.50 427.50 670.00 1186.00 1614.50 10777.50
1958 1637.50 1626.00 1136.00 695.00 471.50 305.00 93.00 167.50 332.00 630.50 1183.00 2020.00 10297.00
1959 2187.50 1724.50 1312.00 856.50 415.00 125.00 51.50 69.00 365.50 819.00 1501.00 1444.50 10871.00
1960 1847.50 1572.00 1553.50 845.50 395.50 223.50 76.50 59.00 371.00 669.50 1116.00 1856.50 10586.00
1961 1962.50 1340.00 1129.50 907.00 454.50 106.00 32.00 53.98 b 402.00 657.50 1155.00 1711.50 9911.48
1962 2107.00 1723.50 1218.00 919.50 398.50 129.00 80.00 91.00 394.00 627.50 1007.50 1696.50 10392.00
1963 2192.73 a 1757.50 1208.50 736.00 479.50 126.50 36.00 99.50 243.00 358.50 1011.00 1918.50 10167.23
1964 1673.50 1553.00 1543.00 778.50 332.00 209.50 21.50 211.00 420.50 682.50 1150.00 1946.50 10521.50
1965 2075.50 1758.50 1613.00 805.50 400.50 176.00 92.50 146.50 557.00 650.50 1202.00 1486.00 10963.50
1966 2336.50 1727.50 1222.00 917.00 567.00 149.50 10.50 117.00 341.00 731.50 1377.00 1802.50 11299.00
1967 1915.00 1892.50 1391.00 874.00 613.50 157.00 81.00 133.00 268.50 745.50 1266.00 1742.50 11079.50
1968 1899.50 1729.00 1150.50 790.50 520.00 171.00 73.00 151.00 280.00 638.00 1160.00 1785.00 10347.50
1969 1988.50 1528.00 1435.50 654.50 495.50 359.00 78.00 34.50 315.50 851.50 1208.00 1569.50 10518.00
1970 2106.00 1694.50 1473.50 835.50 573.50 86.50 21.50 74.00 319.00 660.50 1232.00 1909.50 10986.00
1971 2234.00 1550.50 1359.00 768.50 459.00 72.50 115.50 110.00 322.00 617.50 1209.00 1752.50 10570.00
1972 2191.00 1849.50 1418.50 843.50 239.00 114.00 74.00 78.00 418.00 778.50 1185.00 1896.50 11085.50
1973 1723.00 1564.00 1002.00 806.00 400.50 64.50 28.00 23.00 371.00 538.00 1194.50 1754.00 9468.50
1974 2027.00 1645.00 1500.50 814.00 548.00 150.00 14.00 137.50 492.50 676.50 1114.50 1494.00 10613.50
1975 1820.00 1631.50 1547.00 960.00 327.50 166.00 42.50 123.50 433.50 628.00 1090.50 1802.00 10572.00
1976 2024.50 1463.50 1479.50 667.50 429.50 87.00 42.00 99.50 368.00 890.50 1364.00 2108.00 11023.50
1977 2193.50 1467.50 1097.50 663.50 188.00 120.00 38.50 251.50 374.50 674.50 1273.00 1905.00 10247.00
1978 2123.00 1748.00 1443.00 840.00 318.50 201.00 99.50 124.00 303.00 669.00 1335.50 1994.50 11199.00
1979 2284.00 1836.00 1405.50 929.50 590.50 184.50 40.00 166.50 370.50 870.50 1285.00 1547.50 11510.00
1980 1951.50 1651.50 1495.50 624.00 261.00 130.00 20.00 61.00 372.00 811.00 1167.50 1874.00 10419.00
1981 1822.00 1415.00 1129.00 723.00 366.50 113.50 34.50 20.00 332.00 773.00 902.00 1689.50 9320.00
1982 2340.50 1637.50 1435.50 889.50 285.50 264.00 24.00 165.50 363.00 620.50 1303.00 1506.00 10834.50
1983 1668.50 1357.00 1153.00 804.50 497.00 158.00 28.00 25.00 326.00 723.00 1121.00 2149.50 10010.50
1984 1993.00 1285.00 1472.00 630.50 502.00 118.50 54.00 53.00 481.00 634.50 1182.50 1910.50 10316.50
1985 2016.50 1690.50 1189.00 698.50 331.50 315.50 79.00 171.00 416.50 709.00 1523.00 2010.50 11150.50
1986 1777.50 1557.50 1159.00 653.50 319.00 166.00 38.50 150.50 378.00 731.50 1352.50 1523.00 9806.50
1987 1675.50 1163.00 1091.50 521.00 305.00 105.50 33.00 132.00 264.50 820.50 1022.50 1440.50 8574.50
1988 2009.50 1830.00 1343.00 765.00 241.50 55.50 31.50 87.00 338.00 842.50 1168.50 1743.00 10455.00
1989 1768.50 1867.50 1495.50 870.50 371.50 175.00 13.00 76.50 312.50 676.50 1321.00 2060.50 11008.50
1990 1601.50 1552.50 1180.50 801.50 473.00 92.00 44.00 63.00 292.00 757.00 1106.50 1833.50 9797.00
1991 2016.50 1389.00 1230.00 608.50 266.00 38.50 45.00 45.00 403.00 834.00 1344.00 1612.50 9832.00
1992 1634.50 1408.00 1275.50 882.00 344.00 238.50 178.50 160.50 363.00 762.50 1189.50 1750.00 10186.50
1993 1870.50 1564.50 1227.00 792.00 443.00 216.50 62.00 77.00 496.00 857.00 1264.50 1609.50 10479.50
1994 2258.00 1667.00 1111.50 790.00 347.00 85.00 61.00 140.00 227.50 544.00 1023.50 1424.00 9678.50
1995 1718.50 1642.00 1179.50 933.00 397.50 83.00 52.50 38.00 364.00 726.00 1489.00 1813.00 10436.00
1996 2181.50 1673.50 1544.00 991.00 469.00 114.50 55.00 41.50 315.50 697.50 1425.50 1827.00 11335.50
1997 1950.50 1537.00 1443.50 874.00 588.50 93.50 107.50 170.00 268.50 685.50 1261.50 1384.50 10364.50
1998 1643.00 1060.50 1213.50 631.00 299.00 173.50 73.00 43.00 266.50 645.00 1136.00 1685.50 8869.50
1999 1821.25 c 1275.00 1181.00 689.50 347.00 158.00 59.00 116.00 394.00 775.00 945.50 1475.08 a 9236.33
2000 1871.50 1359.38 a 1017.00 773.00 359.00 228.00 51.00 75.50 391.50 641.50 1087.00 2056.00 9910.38
2001 1581.00 1730.00 1301.00 730.00 343.50 153.00 57.35 a 74.50 346.00 764.00 843.50 1432.20 a 9356.05
2002 1646.00 1295.50 1539.00 828.00 596.00 124.00 27.50 73.50 292.00 986.00 1261.00 1478.00 10146.50
2003 1864.00 1706.00 1369.50 765.00 365.00 153.00 69.00 55.00 338.00 705.50 1280.00 1502.00 10172.00
2004 2142.50 1473.00 1268.00 831.00 617.50 272.50 116.00 278.50 228.00 663.50 1030.50 1733.50 10654.50
2005 1987.50 1433.00 1410.50 625.00 471.00 118.50 74.00 156.50 303.00 683.50 1129.50 1549.00 9941.00
2006 1433.50 1700.00 1214.00 564.00 346.50 116.50 25.50 81.50 370.50 845.00 1088.00 1450.00 9235.00
2007 1721.50 1749.00 1201.00 835.50 323.00 128.00 77.50 140.50 349.00 638.50 1170.50 1750.50 10084.50
2008 1857.50 1769.50 1432.50 873.00 606.00 217.50 105.50 124.00 360.00 690.50 1150.50 2023.00 11209.50
2009 2111.00 1595.00 1342.00 792.00 578.00 235.50 193.00 182.00 169.50 846.00 920.50 1775.00 10739.50
2010 1805.00 1581.50 947.50 583.50 380.00 190.00 27.50 84.50 454.00 594.00 1083.00 1772.50 9503.00
2011 2046.50 1562.00 1349.00 765.50 437.50 202.00 43.00 71.00 371.00 583.00 1080.00 1435.50 9946.00
2012 1581.00 1316.50 836.00 754.50 378.50 98.50 6.00 124.50 409.00 803.00 1166.00 1660.50 9134.00
2013 1840.50 1582.00 a 1529.33 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 4951.83
Period of Record Statistics
MEAN 1936.77 1588.31 1329.80 783.29 421.35 155.35 58.26 108.64 345.54 703.12 1177.02 1717.80 10268.85
S.D. 217.87 179.45 173.18 131.36 110.43 66.32 38.96 57.60 82.36 123.85 153.45 206.93 661.45
SKEW -0.06 -0.55 -0.37 -0.02 0.16 0.74 1.08 0.74 -0.06 0.04 0.28 0.10 -0.39
MAX 2340.50 1915.50 1679.50 1108.27 683.00 359.00 193.00 278.50 557.00 999.00 1523.00 2150.00 11510.00
MIN 1433.50 1060.50 836.00 468.50 179.50 38.50 0.00 20.00 111.00 358.50 843.50 1307.50 8574.50
NO YRS 83 85 82 81 81 76 81 82 83 82 81 81 70