CROOKSTON NW EXP STN, MINNESOTA

Monthly Total Heating Degree Days

(211891)

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
1890 2027.00 1733.50 1466.00 582.00 507.50 34.50 13.00 90.00 290.00 609.00 960.50 1411.50 9724.50
1891 1576.00 1723.50 1555.50 533.00 326.50 94.50 52.00 82.00 140.50 614.00 1321.00 1484.38 a 9502.88
1892 2014.00 1569.50 1226.50 794.50 528.50 88.50 7.00 38.00 149.00 492.00 1333.00 1907.50 10148.00
1893 2161.00 0.00 z 1645.00 968.04 b 406.50 39.60 e 12.40 a 79.00 331.00 802.00 1308.60 e 2035.00 9788.14
1894 2062.50 1619.85 a 1195.50 648.00 279.00 a 32.50 9.00 40.50 284.00 343.00 p 1253.79 a 1447.38 b 8872.02
1895 2124.00 1695.50 1342.50 468.50 298.50 129.00 60.00 65.50 257.00 744.50 1281.00 1574.50 10040.50
1896 1940.50 1514.00 1544.50 724.50 201.50 56.50 28.00 90.42 a 356.50 749.50 1631.00 1623.50 10460.42
1897 2038.00 1670.00 1591.50 682.00 305.00 183.50 15.50 73.50 141.72 a 549.50 1321.50 1725.67 a 10297.39
1898 1571.50 1478.00 1247.50 653.50 336.50 135.00 56.00 68.50 250.50 804.00 1241.50 1727.50 9570.00
1899 1909.00 1796.50 1683.50 734.50 386.00 100.00 25.00 51.00 322.50 626.00 874.00 1596.50 10104.50
1900 1589.50 1758.50 1140.00 h 414.00 223.50 93.50 23.00 4.50 272.50 445.37 a 1343.28 a 1578.50 7746.14
1901 1828.50 1650.50 1242.07 a 620.00 248.00 129.00 3.50 36.50 307.50 551.50 1158.00 1668.50 9443.57
1902 1643.00 1439.00 1046.50 739.00 273.00 165.50 10.00 69.00 340.50 655.00 1093.50 1711.50 9185.50
1903 1811.50 1717.50 868.50 j 688.00 339.50 108.50 53.50 115.00 411.00 603.50 1299.00 1841.00 8988.00
1904 2008.00 2032.50 1512.50 864.50 328.50 97.50 46.00 112.00 351.50 595.50 948.50 1675.03 a 10572.03
1905 2064.50 1654.59 a 1136.50 787.50 410.75 a 154.50 45.50 26.00 155.50 754.50 1062.00 1581.50 9833.34
1906 1695.50 1729.50 1476.50 572.50 436.00 82.00 33.00 75.00 127.00 669.00 1129.50 1789.73 a 9815.23
1907 2166.00 1592.89 a 1383.12 a 1011.50 687.50 102.00 10.50 95.00 409.50 715.00 1108.00 1455.00 10736.01
1908 1639.00 1530.50 1487.00 680.50 401.50 110.50 26.50 85.50 193.50 639.00 1043.00 1623.50 9460.00
1909 1928.20 a 1618.50 1306.50 953.50 392.50 77.50 4.00 30.50 215.50 675.00 1090.00 1829.52 a 10121.22
1910 1729.00 1735.50 855.00 620.69 a 461.50 99.00 5.00 91.00 270.00 516.00 1255.50 1698.50 9336.69
1911 2139.50 1662.00 1188.50 706.50 269.00 29.50 52.50 102.00 327.00 670.50 1456.00 1577.50 10180.50
1912 2348.50 1652.00 1490.50 640.00 289.50 130.00 47.50 72.00 370.50 634.47 a 994.00 1507.12 a 10176.08
1913 2038.00 1707.50 1579.45 a 543.50 448.50 84.00 31.50 14.00 264.50 801.50 936.00 1358.50 9806.95
1914 1633.50 1981.78 a 1294.50 792.93 a 284.00 70.00 7.50 105.50 194.00 462.00 1081.00 1807.62 b 9714.33
1915 1950.00 1350.00 1266.00 476.50 403.00 218.50 76.50 80.50 310.50 593.00 1123.50 1561.50 9409.50
1916 2165.00 1883.50 1489.00 814.00 414.37 a 162.50 0.50 80.00 312.00 824.60 a 1100.00 1952.50 11197.97
1917 2154.50 a 1903.50 1350.00 803.50 396.00 169.50 27.38 a 75.00 277.00 1013.00 922.50 2038.00 11129.88
1918 2041.41 d 1585.11 a 960.50 712.76 a 395.50 97.00 35.00 20.50 450.50 615.00 998.50 890.50 l 7911.78
1919 1573.50 1638.00 a 1453.00 766.50 288.82 a 73.00 2.00 48.00 220.50 899.00 1469.00 1839.50 10270.82
1920 2042.50 1654.00 1348.00 958.50 281.50 70.00 25.00 38.00 134.50 413.50 1029.00 1464.00 9458.50
1921 1562.50 1363.00 1365.00 0.00 z 275.50 67.00 2.00 23.77 a 191.00 517.50 1235.17 a 1551.55 a 8153.99
1922 1784.00 1702.50 1183.50 598.00 131.50 33.50 40.00 15.00 181.50 560.00 897.00 1739.50 8866.00
1923 1815.16 c 1715.54 b 1530.37 a 794.50 308.50 23.89 c 4.00 108.00 175.34 a 628.02 b 879.00 1388.80 a 9371.12
1924 2036.00 1439.96 c 1193.50 a 737.50 563.00 133.00 38.00 79.05 a 276.72 a 406.62 a 1154.50 1992.86 c 10050.71
1925 1826.50 1498.00 c 1160.95 a 484.00 405.50 116.90 a 53.50 11.00 204.31 a 937.50 1110.00 1623.37 a 9431.52
1926 1626.35 d 1305.23 b 1285.00 658.50 210.00 163.00 29.00 55.00 338.50 687.50 1345.34 a 1832.00 9535.43
1927 1792.50 1490.50 1063.00 650.69 a 455.00 129.00 31.00 96.10 a 283.45 a 551.28 a 1274.00 1985.07 b 9801.59
1928 1640.93 a 1384.50 1232.00 815.00 245.00 158.00 5.50 65.00 317.50 621.50 1009.82 b 1356.50 8851.25
1929 2276.00 1765.00 1083.00 633.10 a 478.00 121.00 18.50 38.00 359.50 573.00 1250.00 1724.50 10319.60
1930 2094.50 1305.00 1246.50 579.00 355.50 51.21 a 15.50 18.00 241.50 674.00 1053.50 1474.57 a 9108.77
1931 1486.50 1104.50 1165.00 613.00 389.57 a 64.50 21.50 64.00 140.00 480.00 987.41 a 1420.50 7936.48
1932 1655.50 1574.50 1456.50 648.00 277.45 a 6.50 33.58 a 20.00 228.00 766.50 1254.00 1718.00 9638.53
1933 1711.00 1664.00 1193.00 736.50 266.00 20.50 3.00 27.38 a 144.50 762.50 1250.00 1879.50 9657.88
1934 1662.50 1522.00 1258.50 675.50 172.50 73.00 36.50 101.50 357.00 505.00 955.86 a 1720.00 9039.86
1935 2069.50 1208.00 1186.50 773.50 422.50 156.00 0.00 a 85.77 a 281.50 622.58 a 1474.00 1711.00 9990.85
1936 2298.13 a 2289.00 1362.50 955.50 169.50 106.50 4.00 43.50 211.00 746.50 1249.14 a 1601.50 11036.77
1937 2295.50 1676.89 a 1401.72 a 752.00 260.50 89.48 a 18.00 15.50 246.50 690.00 1168.97 a 1730.00 10345.05
1938 1898.50 1587.50 962.00 675.50 399.50 114.00 12.00 21.00 158.50 428.00 1267.50 1584.00 9108.00
1939 1763.38 a 1914.50 1400.00 745.00 155.00 a 95.00 8.00 22.50 237.50 726.36 b 910.50 1256.57 b 9234.31
1940 1907.50 1486.00 1429.50 805.00 351.00 125.50 15.50 74.50 154.14 a 435.50 1239.50 1506.50 9530.14
1941 1736.50 1637.50 1348.50 587.00 224.00 104.00 14.00 52.18 a 286.00 595.50 1044.50 1429.50 9059.18
1942 1525.00 1485.50 1031.55 b 565.00 441.00 136.00 44.00 53.50 396.50 539.00 1134.00 1811.00 9162.05
1943 2082.00 1512.50 1484.00 670.50 448.00 141.50 1.50 37.50 341.50 519.00 1098.00 1422.50 9758.50
1944 1416.50 1553.50 1416.50 786.43 b 288.50 106.00 34.00 75.00 266.50 552.50 980.50 1550.50 9026.43
1945 1720.50 1449.00 944.50 774.50 547.50 204.50 54.00 33.50 383.50 672.50 1169.50 1815.57 a 9769.07
1946 1829.50 1655.50 977.00 559.00 425.73 a 114.00 14.00 68.00 304.50 715.00 1151.00 1698.50 9511.73
1947 1629.00 1636.50 1326.00 803.00 487.50 149.50 28.50 32.50 354.50 395.00 1325.00 1725.50 9892.50
1948 1961.00 1756.00 1495.00 747.41 a 342.00 110.50 17.00 22.00 138.00 544.50 1093.45 a 1715.85 a 9942.71
1949 1913.00 1786.00 1387.50 626.38 a 321.00 104.00 21.00 28.50 330.00 623.10 a 959.50 1736.00 9835.98
1950 2308.50 1680.00 1459.50 1041.72 a 497.00 140.50 46.50 114.50 204.50 580.00 1292.00 1821.50 11186.22
1951 1959.50 1464.50 1446.00 784.14 a 216.50 163.00 43.50 69.00 341.50 672.50 1372.00 1806.00 10338.14
1952 1986.50 1359.89 a 1302.50 555.50 309.50 65.50 33.00 56.50 229.00 724.50 1016.00 1423.50 9061.89
1953 1688.50 1403.50 1174.50 807.00 359.50 132.50 41.50 13.00 292.50 431.50 963.00 1597.50 8904.50
1954 2156.00 1165.00 1297.50 823.50 511.00 112.50 27.12 c 50.50 291.50 642.50 965.50 1439.43 a 9482.06
1955 1819.00 1697.50 1635.00 520.50 259.88 a 87.93 a 12.00 14.00 284.00 550.50 1392.50 1884.50 10157.31
1956 1843.00 1796.00 1483.00 907.00 344.62 a 26.00 26.50 30.00 328.00 444.00 1034.50 1579.00 9841.62
1957 1998.50 1536.00 1210.00 688.00 280.00 98.50 2.00 38.23 a 305.00 606.50 1103.50 1406.37 a 9272.60
1958 1499.00 1488.00 1072.00 580.00 236.50 168.62 a 41.00 68.50 197.50 513.00 1101.00 1775.78 a 8740.90
1959 2015.00 1663.50 1136.50 690.00 345.50 65.00 20.50 16.00 248.00 768.50 1381.00 1299.50 9649.00
1960 1773.50 1555.00 1505.50 714.00 308.00 89.50 29.00 11.50 213.00 555.50 1080.50 1741.50 9576.50
1961 1825.50 1366.50 993.50 839.00 383.50 52.00 17.50 10.00 285.00 557.00 1064.50 1741.00 9135.00
1962 1966.00 1703.50 1359.00 781.50 318.00 70.00 21.00 22.00 263.00 475.00 973.00 1530.00 9482.00
1963 1983.50 1527.50 1031.55 b 619.50 382.00 48.50 4.50 21.00 114.50 266.00 957.50 1838.50 8794.55
1964 1617.50 1420.50 1441.50 a 653.00 245.50 132.00 9.00 98.17 a 298.50 609.84 b 1073.00 1915.50 9514.01
1965 2071.00 1646.08 b 1551.00 693.50 325.00 63.50 22.50 63.50 483.50 538.00 1188.50 1438.50 10084.58
1966 2293.50 1730.50 1164.57 a 842.78 c 447.00 98.50 2.00 72.00 211.50 593.00 1279.00 1729.50 10463.84
1967 1803.00 1787.50 1262.50 802.00 460.00 99.50 47.00 67.50 132.00 626.50 1068.00 1545.00 9700.50
1968 1850.00 1692.00 1017.00 651.50 391.00 94.00 37.00 52.00 181.00 554.50 997.50 1703.00 9220.50
1969 2069.00 1502.00 1594.50 614.00 314.50 208.50 17.50 7.50 202.50 754.50 1052.50 1519.50 9856.50
1970 2014.50 1576.50 1607.50 807.00 376.50 33.50 7.50 18.00 239.00 563.50 1131.00 1781.00 10155.50
1971 2136.50 1502.50 1233.00 629.50 315.50 24.00 55.50 33.50 221.00 518.00 1098.50 1664.00 9431.50
1972 2018.00 1807.50 1319.00 740.00 221.50 61.50 34.00 38.50 263.00 654.00 1137.00 1881.00 10175.00
1973 1688.00 1380.50 871.50 650.50 284.00 61.50 19.63 a 3.50 247.00 417.00 1187.50 1716.50 8527.13
1974 2038.50 1558.50 1367.00 717.00 412.00 64.50 1.50 74.50 300.00 541.50 1065.00 1415.50 9555.50
1975 1720.00 1577.50 1485.50 863.00 269.00 93.50 19.50 41.50 273.50 486.50 1010.50 1595.47 a 9435.47
1976 1827.50 1311.50 1376.00 539.00 264.50 49.00 7.00 15.00 208.00 750.50 1221.00 1846.05 a 9415.05
1977 2114.50 1378.00 1058.50 476.00 82.84 b 44.00 9.00 99.00 230.00 531.00 1205.00 0.00 z 7227.84
1978 0.00 z 1733.00 1349.00 691.50 192.50 95.50 26.00 40.50 184.50 539.50 1338.00 1858.40 b 8048.40
1979 2254.00 1835.50 1417.50 923.50 518.50 88.00 14.00 66.00 165.50 639.50 1200.00 1358.50 10480.50
1980 1832.00 1652.50 1415.00 482.50 210.50 51.50 5.50 43.00 270.00 675.00 985.50 1636.50 9259.50
1981 1595.00 1266.00 985.00 567.00 288.50 87.00 15.50 9.00 232.00 624.00 845.50 1678.00 8192.50
1982 2252.00 1561.00 1291.00 718.50 271.50 225.00 7.50 103.00 306.50 648.50 1286.00 1448.00 10118.50
1983 1606.50 1306.50 1159.50 758.50 463.00 107.50 23.00 2.50 306.00 696.50 1055.00 2081.50 9566.00
1984 1811.00 1264.00 1360.00 608.00 407.00 73.00 17.50 23.00 411.00 588.48 a 1170.00 1802.50 9535.48
1985 1920.00 1629.50 1045.50 574.00 205.50 209.50 39.50 117.50 383.79 a 697.00 1564.50 2035.00 10421.29
1986 1707.50 1591.85 a 1106.50 691.50 272.00 67.00 1.00 105.00 298.00 677.00 1358.00 1503.00 9378.35
1987 1563.50 1125.50 1153.20 a 468.10 a 181.02 c 57.50 20.00 92.50 229.14 a 767.00 998.89 c 1420.32 a 8076.67
1988 1931.50 1687.00 1178.52 a 647.14 b 177.98 b 9.00 10.50 39.00 274.50 779.00 1180.00 1658.00 9572.14
1989 1819.00 1862.00 1502.00 767.00 251.50 94.50 0.00 38.00 253.00 651.50 1293.50 1957.00 10489.00
1990 1480.00 1450.00 1140.00 719.50 368.50 82.00 23.50 40.50 215.00 712.50 1071.00 1770.00 9072.50
1991 1977.00 1340.50 1138.00 587.50 251.50 12.50 17.50 10.50 286.00 785.50 1329.50 1545.50 9281.50
1992 1568.50 1347.50 1105.50 818.00 260.50 157.50 131.00 114.50 349.00 693.00 1177.00 1747.00 9469.00
1993 1943.00 1644.00 1339.00 715.00 334.50 194.00 76.00 54.50 395.00 776.00 1279.00 1614.50 10364.50
1994 2228.50 1814.50 1155.00 736.50 288.00 41.50 33.50 84.00 207.50 515.00 1014.50 1447.00 9565.50
1995 1777.50 1569.00 1205.50 858.50 388.00 57.00 40.50 11.00 288.00 700.00 1394.00 1764.50 10053.50
1996 2175.00 1676.50 1575.00 926.00 396.00 94.00 30.00 21.50 260.50 661.00 1484.50 1880.50 11180.50
1997 2033.50 1549.50 1499.50 889.00 474.50 21.00 45.50 53.50 165.00 648.50 1250.00 1287.50 9917.00
1998 1756.00 1088.00 1219.00 530.00 185.00 139.00 15.00 5.50 155.50 598.50 1117.50 1592.00 8401.00
1999 1894.50 1280.00 1169.00 638.50 274.50 99.00 14.00 36.00 325.50 736.00 880.00 1372.00 8719.00
2000 1761.00 1264.00 926.50 735.50 291.50 146.00 29.50 29.50 294.00 573.50 1157.50 2000.50 9209.00
2001 1620.50 1731.00 1293.00 707.00 250.00 99.50 28.00 27.00 228.50 696.50 808.50 1420.00 8909.50
2002 1568.50 1219.00 1467.00 782.50 541.50 44.50 10.50 39.50 206.50 896.50 1161.50 1430.00 9367.50
2003 1791.50 1678.00 1330.50 644.50 305.00 72.00 16.50 24.50 266.50 548.00 1287.00 1430.00 9394.00
2004 1993.50 1553.50 1207.00 695.50 471.00 154.50 66.50 152.50 180.00 618.50 960.00 1571.50 9624.00
2005 1990.00 1443.50 1292.50 533.50 398.00 32.00 45.00 54.50 172.00 545.50 1005.00 1498.00 9009.50
2006 1325.50 1620.50 1252.50 505.00 304.50 43.00 10.00 21.50 270.00 746.00 1087.50 1346.50 8532.50
2007 1686.50 1723.50 1148.00 726.00 246.00 46.50 14.00 53.00 254.00 554.50 1086.00 1779.50 9317.50
2008 1856.50 1812.50 1405.50 774.00 446.00 110.00 24.50 26.50 0.00 z 604.00 1055.50 1915.50 10030.50
2009 2119.50 1559.50 0.00 z 0.00 z 435.50 142.50 0.00 z 0.00 z 0.00 z 787.50 856.50 1747.00 7648.00
2010 1804.00 1627.50 1030.50 461.00 299.50 74.50 n 3.50 19.00 i 315.00 513.50 1117.00 1737.50 8909.00
2011 1991.50 1561.00 1381.50 719.50 366.50 105.50 0.00 z 19.50 238.50 512.00 1009.50 1347.50 9252.50
2012 1540.00 1375.50 825.00 561.00 244.00 45.00 0.50 38.50 290.00 724.00 1138.00 1606.50 8388.00
2013 1760.50 1577.50 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 3338.00
Period of Record Statistics
MEAN 1875.17 1577.59 1287.12 699.13 337.27 96.60 24.55 51.71 262.23 625.14 1142.26 1650.54 9626.41
S.D. 224.03 196.67 190.76 127.71 103.77 48.49 20.01 32.68 75.86 121.33 161.57 190.78 648.66
SKEW -0.01 0.01 -0.20 0.20 0.37 0.43 1.67 0.53 0.24 0.21 0.41 0.09 0.09
MAX 2348.50 2289.00 1683.50 1041.72 687.50 225.00 131.00 152.50 483.50 1013.00 1631.00 2081.50 11197.97
MIN 1325.50 1088.00 825.00 414.00 82.84 6.50 0.00 2.50 114.50 266.00 808.50 1256.57 7936.48
NO YRS 123 123 120 121 123 122 121 121 121 122 123 121 111