COOPERSTOWN, NORTH DAKOTA

Monthly Total Heating Degree Days

(321766)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201208
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
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 649.00 535.50 n 685.00 q 649.00
1904 1829.50 1985.00 0.00 z 462.50 m 363.73 a 160.50 f 112.50 168.00 362.00 573.50 d 591.00 h 1610.00 7004.23
1905 2060.98 a 1589.00 1060.00 783.10 a 513.50 203.50 74.00 42.50 172.00 0.00 z 0.00 z 0.00 z 6498.59
1906 0.00 z 0.00 z 0.00 z 341.50 h 390.60 a 109.14 a 51.50 h 64.00 133.20 e 436.50 h 0.00 z 0.00 z 696.94
1907 0.00 z 1627.11 a 1355.14 c 1022.00 628.30 c 52.00 k 26.50 87.83 a 0.00 z 0.00 z 0.00 z 0.00 z 4746.89
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 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
1914 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
1915 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
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1917 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
1918 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
1919 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
1920 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
1921 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
1922 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
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 0.00 z 0.00 z 0.00 z 0.00
1924 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
1925 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
1926 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
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 1728.00 1728.00
1935 2054.50 1189.00 1288.00 846.50 499.00 147.50 0.00 98.50 271.00 640.50 1502.50 1770.50 10307.50
1936 2373.50 2279.09 a 1263.50 861.50 183.50 89.50 7.00 48.00 238.50 777.50 1197.00 1648.50 10967.09
1937 2350.83 a 1783.00 1417.00 827.50 323.50 149.00 32.00 14.00 305.50 742.00 1294.14 a 1763.50 11001.97
1938 1822.80 a 1588.00 918.00 598.50 463.00 170.17 a 31.50 38.00 240.00 533.00 1332.00 1660.57 a 9395.54
1939 1818.15 a 2085.50 1472.00 771.50 201.50 168.00 4.00 42.00 269.00 735.00 945.50 1240.00 9752.15
1940 1982.50 1515.00 1477.00 869.50 353.00 127.50 7.50 76.50 145.00 504.78 a 1308.50 1529.50 9896.28
1941 1827.50 1669.50 1472.50 614.50 253.50 129.00 43.40 a 47.50 291.00 639.00 1108.50 1418.50 9514.40
1942 1551.00 1545.50 1140.00 630.50 459.00 159.00 45.00 69.50 427.00 624.00 964.00 1784.00 9398.50
1943 2059.50 1398.50 1408.00 572.00 412.00 141.50 0.00 27.50 270.52 a 504.50 1074.31 a 1383.50 9251.83
1944 1337.65 a 1529.00 1427.00 738.00 249.50 90.52 a 19.00 52.00 228.00 532.00 1041.00 1541.00 8784.67
1945 1687.00 1427.00 925.50 757.00 530.00 217.50 52.00 32.50 338.50 602.50 1235.50 1894.00 9699.00
1946 1856.50 1664.50 933.50 559.00 452.50 127.50 19.00 67.00 316.00 740.00 1201.00 1633.18 a 9569.68
1947 1549.50 1597.00 1283.00 763.00 492.00 168.00 47.00 28.00 304.00 406.00 1309.00 1681.00 9627.50
1948 1869.50 1736.00 1524.50 771.50 335.00 101.50 18.00 26.50 113.00 583.00 1096.00 1709.50 9884.00
1949 1959.72 a 1757.00 1370.50 529.66 a 291.00 86.00 22.50 13.50 z 308.00 637.50 916.00 1753.00 9630.87
1950 2349.00 1641.00 1425.50 995.50 477.50 86.50 45.00 140.00 0.00 z 465.50 j 1459.00 1947.66 b 10566.66
1951 2137.50 1677.76 c 1567.00 765.00 a 242.50 193.00 h 31.50 f 102.00 356.50 705.00 1306.61 b 1832.50 10692.37
1952 1956.00 1391.00 1377.00 530.00 309.50 61.50 21.00 44.50 179.46 b 705.25 c 1015.50 1496.50 9087.21
1953 1174.00 i 1308.50 1202.50 833.50 357.00 107.07 a 31.00 7.50 243.50 390.71 b 911.00 1484.50 6876.78
1954 2061.00 989.00 1274.62 a 730.86 a 469.50 119.50 27.00 42.37 a 288.00 634.50 951.72 a 1383.00 8971.07
1955 1729.00 1636.50 1487.50 454.50 261.78 d 108.62 a 5.50 9.50 264.31 a 533.72 a 1442.00 1877.50 9810.43
1956 1831.00 1694.00 1460.62 a 919.50 355.00 20.50 33.50 39.50 338.79 a 486.50 1069.50 854.00 l 8248.41
1957 1944.50 1515.00 1209.00 a 715.34 a 321.00 129.50 3.00 61.50 322.00 635.00 1065.00 e 1384.00 9304.84
1958 1497.09 b 1501.50 1124.00 677.31 d 278.50 225.00 a 67.00 58.00 190.34 a 535.78 a 1139.48 a 1721.50 9015.50
1959 1934.83 b 1644.50 1064.33 a 679.44 c 397.00 71.38 a 19.00 11.50 269.48 a 827.00 1371.00 1292.50 9581.97
1960 1797.00 1618.09 b 1522.62 a 723.50 302.25 a 115.86 a 23.50 17.50 206.50 560.00 1089.00 1698.00 9673.82
1961 1753.50 1352.00 1013.50 867.32 b 391.50 38.00 23.50 9.00 315.00 559.00 1064.00 1773.95 b 9160.27
1962 1901.85 a 1676.37 a 1360.00 746.00 292.50 f 90.00 c 21.00 16.02 a 287.00 490.00 945.00 1455.93 b 8989.17
1963 1944.00 1525.50 954.00 638.50 355.00 47.00 6.00 21.50 123.00 271.00 951.50 1770.50 8607.50
1964 1543.50 1332.00 1404.00 640.50 240.25 a 128.50 4.50 101.00 311.00 573.50 1111.00 1907.50 9297.25
1965 1996.50 1561.00 1509.00 718.00 327.50 63.50 18.08 a 72.00 523.50 514.50 1125.50 1381.50 9810.58
1966 2147.50 1583.50 1064.00 812.00 410.00 97.50 0.50 79.50 217.50 579.50 1280.50 1667.50 9939.50
1967 1612.53 b 1662.00 1196.00 807.50 448.00 95.00 37.00 50.00 139.50 637.57 a 1076.50 1557.50 9319.10
1968 1803.00 1586.50 955.50 634.00 413.50 107.00 41.50 72.50 244.50 597.00 1032.00 1744.50 9231.50
1969 2088.50 1461.50 1497.50 617.50 311.00 217.50 21.50 12.50 231.50 788.50 1044.50 1534.50 9826.50
1970 2011.50 1520.30 a 991.50 i 593.50 f 410.50 44.00 7.00 19.00 248.00 620.50 1177.50 1735.50 7793.80
1971 2083.50 1493.50 1248.00 624.50 346.50 27.50 53.50 35.50 263.50 555.50 1157.50 1684.50 9573.50
1972 1931.00 1728.00 1275.50 789.00 248.50 73.50 38.50 43.00 267.50 679.00 1154.00 1853.50 10081.00
1973 1573.00 1304.00 917.00 683.00 280.00 61.50 8.00 3.00 289.00 474.50 1267.50 1746.00 8606.50
1974 1986.77 c 1543.50 1397.50 716.00 420.00 80.50 3.50 82.00 310.50 537.50 1083.50 1370.64 c 9531.91
1975 1678.00 1538.00 1347.50 870.00 d 275.50 80.00 14.00 38.50 281.00 532.00 1024.50 1565.50 9244.50
1976 1755.00 1281.50 1288.50 565.00 243.50 63.00 7.50 10.00 195.00 738.50 1225.00 1761.83 a 9134.33
1977 2127.50 1283.50 1015.50 445.00 78.00 28.00 14.00 125.50 274.50 529.50 1187.50 1832.00 8940.50
1978 2141.50 1708.00 1240.00 695.50 193.00 76.00 15.00 33.50 169.50 559.50 1293.50 1821.00 9946.00
1979 2215.50 1878.50 1378.98 a 956.00 506.50 86.00 7.50 55.00 147.00 652.00 1220.00 1359.00 10461.98
1980 1858.00 1592.50 1350.00 488.00 214.50 67.50 7.00 54.52 b 300.00 698.50 968.50 1646.62 a 9245.63
1981 1623.50 1245.48 a 963.00 564.50 331.50 126.00 14.50 10.50 262.00 642.50 897.22 c 1707.50 8388.20
1982 2272.00 1552.50 1308.00 745.00 283.50 165.00 3.50 78.00 273.50 595.00 1273.00 1397.00 9946.00
1983 1478.50 1229.00 1165.00 759.00 425.00 95.00 13.50 0.00 282.00 627.00 1055.50 2032.50 9162.00
1984 1686.00 1159.50 1316.00 623.00 353.00 64.00 17.50 19.50 340.50 602.00 1103.00 1756.00 9040.00
1985 1829.50 1488.50 975.00 524.50 174.50 173.00 11.50 81.00 347.00 679.50 1509.50 1843.00 9636.50
1986 1586.50 1538.50 953.00 667.00 290.50 47.00 0.50 78.50 326.00 616.50 1345.00 1424.00 8873.00
1987 1490.00 1123.00 1190.00 428.00 181.50 34.00 15.00 74.50 173.50 686.00 939.50 1412.00 7747.00
1988 1869.50 1621.50 1126.00 604.00 153.00 17.50 3.50 44.50 233.50 698.00 1169.00 1593.50 9133.50
1989 1675.00 1753.50 1438.00 696.50 253.00 106.00 0.50 35.00 216.50 586.00 1215.50 1831.50 9807.00
1990 1338.00 1340.00 1045.50 679.00 348.50 78.50 17.50 19.50 177.50 630.00 1058.50 1725.00 8457.50
1991 1810.50 1186.00 1105.50 551.00 247.50 20.00 13.00 12.00 250.00 749.00 1328.50 1467.50 8740.50
1992 1522.50 1244.00 993.00 734.00 238.50 144.50 106.50 115.00 278.00 665.00 1218.50 1795.00 9054.50
1993 1838.50 1576.50 1252.00 689.50 309.00 178.00 68.00 48.50 327.50 676.50 1235.50 1572.00 9771.50
1994 0.00 z 0.00 z 0.00 z 0.00 z 244.00 47.50 42.50 80.50 191.50 552.00 1062.00 1492.50 3712.50
1995 1769.00 1507.50 1287.00 848.00 373.00 65.00 28.50 3.00 275.00 695.50 1355.50 1718.00 9925.00
1996 2099.00 1578.50 1524.50 894.50 407.50 84.50 17.50 12.00 263.00 687.00 1493.50 1893.50 10955.00
1997 2019.50 1437.50 1405.00 907.00 419.50 11.50 44.00 73.00 196.00 641.50 1261.00 1329.00 9744.50
1998 1766.50 1122.50 1290.50 551.00 230.50 179.00 36.00 9.50 194.00 625.50 1181.50 1604.00 8790.50
1999 1921.50 1312.00 1174.00 678.50 316.00 121.55 a 28.50 50.50 351.00 705.00 910.00 1336.50 8905.05
2000 1776.82 a 1294.12 a 970.50 0.00 z 0.00 z 180.00 a 49.00 60.93 b 316.00 603.50 1247.07 a 2038.50 8536.44
2001 1595.47 a 0.00 z 1301.48 a 673.50 292.00 147.50 36.50 44.50 280.50 767.50 855.50 1507.12 a 7501.57
2002 1548.50 1193.00 1492.50 818.50 537.00 84.00 20.50 77.50 253.00 966.50 1151.50 1461.50 9604.00
2003 1782.50 1662.00 1362.50 663.00 392.00 132.00 36.00 28.00 319.50 607.50 1325.50 1473.50 9784.00
2004 1996.29 b 1536.50 1194.50 700.00 476.50 182.50 91.50 181.00 224.00 642.50 1001.25 b 1482.83 a 9709.38
2005 1897.00 1396.37 a 1211.00 554.50 419.00 59.00 39.50 82.50 207.00 600.00 1072.50 1495.00 9033.37
2006 1309.50 1591.50 1253.50 534.00 326.00 74.00 11.50 36.50 319.50 798.00 1120.50 1356.50 8731.00
2007 1742.00 0.00 z 1134.00 745.50 285.50 73.00 15.50 96.00 286.50 583.00 1099.50 1747.00 7807.50
2008 1916.00 1760.50 1337.00 784.50 440.00 161.00 23.50 52.50 277.00 650.50 1103.50 1977.00 10483.00
2009 2054.30 c 1615.00 1440.00 771.00 430.50 100.00 f 86.50 105.50 126.00 839.00 897.00 1817.50 10182.30
2010 1803.50 1627.50 1018.50 516.00 377.00 115.00 18.00 42.00 352.00 572.00 1148.00 0.00 z 7589.50
2011 1983.50 1609.00 1519.00 766.67 c 386.97 b 94.82 b 11.37 a 24.91 c 294.50 525.40 b 1031.00 1340.75 a 9587.88
2012 1509.50 1324.87 b 834.50 616.07 b 337.26 b 71.54 d 2.00 k 80.17 b 0.00 z 0.00 z 0.00 z 0.00 z 4773.91
Period of Record Statistics
MEAN 1844.74 1523.33 1249.25 703.12 344.48 104.28 26.67 52.52 262.56 622.30 1148.04 1631.98 9460.36
S.D. 237.35 219.43 190.77 130.12 102.62 51.27 23.96 36.99 71.51 106.13 156.23 193.49 613.11
SKEW -0.06 0.32 -0.32 0.10 0.10 0.37 1.59 1.06 0.28 0.03 0.33 -0.02 0.22
MAX 2373.50 2279.09 1567.00 1022.00 628.30 225.00 112.50 181.00 523.50 966.50 1509.50 2038.50 11001.97
MIN 1309.50 989.00 834.50 428.00 78.00 11.50 0.00 0.00 113.00 271.00 855.50 1240.00 7747.00
NO YRS 78 78 78 77 80 78 79 81 79 78 77 77 64