IPSWICH, SOUTH DAKOTA

Monthly Total Heating Degree Days

(394206)

Base Temperature = 65 F

File last updated on Apr 4, 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
1894 0.00 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
1895 0.00 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
1896 0.00 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
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.00 q 67.50 523.50 1183.00 1532.50 3306.50
1898 1119.50 f 1277.50 1181.00 600.50 354.00 75.50 15.50 21.00 257.00 765.50 1252.24 a 212.50 z 5799.74
1899 521.50 w 1652.52 a 1667.50 683.50 362.00 64.00 14.50 8.00 t 275.50 634.98 a 816.50 1529.50 7700.50
1900 1421.00 1600.50 1253.50 472.50 159.50 69.50 0.50 0.00 248.50 465.50 1178.50 1300.93 b 8170.43
1901 1531.50 1468.00 1087.00 539.50 187.00 75.00 0.00 1.00 241.50 496.00 1081.07 b 1503.50 8211.07
1902 1509.50 1420.00 1086.50 620.50 173.00 117.78 c 16.50 40.00 328.50 583.50 1014.00 1691.00 8600.78
1903 1603.00 1643.50 1199.70 a 630.00 289.00 30.50 n 34.50 62.00 320.50 518.50 1135.00 1601.50 9037.20
1904 1867.00 1892.85 e 1224.50 739.50 303.50 76.00 o 46.50 63.50 250.50 493.00 851.00 1499.00 9230.85
1905 1845.00 1533.50 876.50 688.50 445.50 116.50 30.50 8.50 132.00 770.50 917.00 1521.50 8885.50
1906 1565.50 1455.50 1398.00 504.00 327.50 86.67 c 21.00 46.00 128.50 600.50 1094.50 1215.50 h 7227.67
1907 2063.50 1406.50 1100.00 867.00 571.00 75.00 4.50 22.98 b 207.00 q 575.50 997.76 a 1292.00 8975.74
1908 1057.00 f 691.50 n 1129.43 a 549.31 a 369.86 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2048.61
1909 1143.50 m 1462.74 a 1137.50 807.00 341.52 a 72.50 16.00 25.32 a 149.50 627.50 1056.50 1786.00 7482.07
1910 1701.90 a 1672.50 668.00 510.52 a 433.00 120.50 5.00 1.00 u 181.00 h 408.00 0.00 z 1492.00 7011.42
1911 1824.87 a 1446.00 940.73 e 631.50 248.00 10.50 n 31.50 82.67 a 227.00 667.00 1356.00 e 1503.50 b 8958.76
1912 2044.50 1025.50 i 1431.00 489.50 306.00 144.50 21.70 a 16.50 374.00 537.00 877.00 1345.92 a 7587.62
1913 1695.00 1403.00 1280.82 a 516.50 386.43 b 51.00 16.02 a 2.14 b 212.50 0.00 z 851.67 c 1220.00 7635.07
1914 1447.18 a 1656.00 1082.00 578.50 275.50 49.50 0.50 67.68 a 137.00 426.00 816.67 c 1732.00 8268.53
1915 1732.00 1279.00 1369.50 394.14 a 425.00 191.50 83.50 71.82 a 266.79 b 492.26 b 922.50 1354.00 8582.00
1916 2019.00 1535.00 1098.50 657.00 343.58 a 173.00 0.00 67.00 0.00 z 664.00 990.50 1779.50 9327.08
1917 1775.00 1688.50 1259.00 775.50 423.00 157.00 23.00 53.00 217.50 817.50 774.50 1809.00 9772.50
1918 1903.00 1392.00 884.00 680.00 277.00 65.89 b 29.50 23.00 340.00 501.00 1023.50 1357.69 d 8476.58
1919 1303.50 1479.50 1306.50 633.50 318.00 108.50 3.21 b 21.18 a 187.50 b 942.73 c 1303.50 1612.50 9220.12
1920 1661.50 1323.00 1151.00 883.45 a 293.50 111.50 8.00 0.00 z 0.00 z 392.50 f 1049.00 1375.00 7855.95
1921 1350.50 1106.00 1005.50 549.50 307.50 34.00 12.50 24.00 197.50 484.00 1235.50 1364.00 7670.50
1922 1686.00 1698.00 1075.00 606.00 226.30 a 48.50 32.00 9.00 143.50 493.50 937.00 1600.00 8554.80
1923 1509.50 1529.50 1216.00 670.50 275.00 72.50 1.00 53.50 115.50 573.50 770.50 1174.38 a 7961.38
1924 1728.00 1194.50 1176.50 647.00 474.50 154.00 29.00 36.00 236.50 375.62 a 959.50 1771.50 8782.62
1925 1689.00 1217.46 b 921.00 415.50 370.50 106.00 23.50 2.67 b 140.00 910.00 974.50 1408.36 b 8178.50
1926 1429.00 1078.00 1098.50 578.00 155.50 92.50 1.00 19.50 281.90 a 524.00 1164.50 1555.00 7977.40
1927 1516.50 1266.50 934.00 626.50 437.50 141.00 29.00 54.50 272.00 468.00 1218.00 1979.98 d 8943.48
1928 0.00 z 242.00 w 924.00 786.00 176.70 a 131.50 5.17 a 46.50 262.50 557.50 895.50 1216.50 5001.87
1929 1955.21 c 1616.74 a 958.50 612.50 400.42 a 99.50 3.10 a 0.50 327.00 520.00 1174.50 1508.67 a 9176.64
1930 1959.00 1052.07 a 1125.50 98.50 y 0.00 z 0.00 z 0.00 z 0.00 z 185.50 g 604.00 854.00 0.00 z 5594.57
1931 1179.00 903.50 1054.50 523.50 335.00 25.50 5.50 23.50 91.50 398.00 954.50 1313.37 a 6807.37
1932 1609.70 d 1402.20 b 1297.02 c 495.00 216.50 6.21 a 9.50 25.00 n 154.66 a 632.92 a 1011.50 1543.28 a 8378.49
1933 1413.60 a 1404.50 990.97 a 574.66 a 0.00 z 0.00 u 0.00 16.50 78.50 564.50 931.50 1502.50 7477.22
1934 1333.00 b 1079.75 d 1067.00 524.50 92.50 12.00 10.85 a 28.50 271.00 399.50 838.00 1459.50 7116.10
1935 1647.00 997.00 995.00 743.00 427.00 97.24 a 0.00 59.00 144.50 645.00 1212.00 1498.00 8464.74
1936 2080.50 2130.50 1024.50 758.50 147.25 c 44.44 c 0.00 f 6.00 148.50 621.00 1134.50 1419.00 9514.69
1937 2226.32 a 1542.50 1141.50 716.50 201.00 83.33 c 3.50 2.00 157.50 554.00 1045.00 1492.00 9165.15
1938 1612.53 b 1459.63 a 880.50 543.00 317.50 38.28 a 0.00 6.50 92.50 331.00 1070.17 a 1250.50 7602.11
1939 1389.50 1636.00 1030.00 623.50 97.50 60.50 0.00 16.50 153.50 551.00 819.00 1077.50 7454.50
1940 1864.50 1351.00 1188.50 679.00 269.50 43.00 0.00 20.31 b 102.00 298.00 1114.50 1330.00 8260.31
1941 1615.00 1366.00 1149.00 514.50 126.00 86.00 14.00 m 11.37 a 182.50 521.50 917.22 c 1244.13 a 7733.22
1942 1299.42 a 1334.00 916.71 c 392.50 359.50 66.50 7.00 7.00 261.50 482.00 912.00 1535.00 7573.13
1943 1903.50 1257.00 1252.00 414.00 314.50 86.50 0.00 4.50 164.00 437.00 1076.38 a 1272.00 8181.38
1944 1232.00 1418.50 0.00 z 671.50 155.50 47.07 a 10.00 23.00 117.69 d 0.00 z 0.00 z 1396.72 d 5071.98
1945 1441.50 1309.50 784.50 637.50 376.59 d 63.50 j 0.00 z 3.50 0.00 z 0.00 z 214.50 x 1619.00 6172.09
1946 1504.57 b 0.00 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 1504.57
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1949 0.00 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
1950 0.00 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
1951 0.00 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
1952 0.00 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
1953 0.00 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
1954 0.00 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
1955 0.00 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
1956 0.00 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
1957 0.00 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
1958 0.00 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
1959 0.00 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
1960 0.00 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
1961 0.00 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
1962 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 70.50 23.50 15.50 228.00 431.50 841.00 1337.50 2947.50
1963 1834.50 1270.00 838.50 571.50 303.50 24.00 0.00 26.00 98.00 260.00 893.50 1646.00 7765.50
1964 1406.00 1152.00 1283.00 546.50 224.00 62.50 3.00 69.00 261.00 545.50 1088.50 1752.50 8393.50
1965 1881.00 1384.00 1419.00 634.50 250.50 42.50 1.50 28.50 479.50 424.50 992.50 1206.50 8744.50
1966 1969.00 1496.50 937.23 a 787.00 342.50 75.50 0.00 69.50 218.50 536.00 1165.50 1419.00 9016.23
1967 1499.00 1459.00 989.00 653.50 405.00 72.00 44.00 27.00 138.50 566.00 975.50 1487.50 8316.00
1968 1656.50 1397.00 868.50 605.50 402.50 58.00 22.50 38.50 179.50 524.50 986.50 1630.00 8369.50
1969 1924.00 1311.85 a 1442.00 522.50 232.00 151.50 4.50 1.50 123.50 675.00 944.50 1432.50 8765.35
1970 1900.00 1293.50 1293.50 663.00 229.00 24.00 6.00 4.00 191.50 545.00 1052.31 d 781.00 q 7201.81
1971 1832.00 1380.50 1102.71 c 537.00 340.00 21.00 35.50 18.50 210.00 521.00 1025.50 1657.00 8680.71
1972 1840.00 1623.00 1164.00 658.50 225.50 67.50 22.00 27.00 171.50 604.00 1059.50 1682.00 9144.50
1973 1465.50 1163.50 835.00 601.50 246.50 39.00 3.00 0.00 222.50 406.00 1077.00 1562.00 7621.50
1974 1685.50 1213.50 1017.00 557.50 321.00 67.50 1.00 41.50 231.00 460.50 979.50 1282.00 7857.50
1975 1463.50 1450.50 1228.24 b 794.00 220.50 60.50 6.50 13.00 232.00 499.50 965.50 1432.20 a 8365.94
1976 1667.50 1115.50 1143.50 384.00 h 291.50 43.50 5.50 9.00 192.00 723.50 1204.50 1584.62 a 7980.62
1977 1970.50 1122.00 964.32 c 415.50 100.50 26.00 11.00 44.50 171.50 592.00 1185.00 1702.00 8304.82
1978 2102.00 1673.00 1240.50 652.00 249.50 70.50 14.50 31.50 145.00 562.50 1208.00 1661.08 a 9610.08
1979 2082.00 1792.50 1228.00 743.00 415.50 77.14 b 10.00 43.00 120.00 572.00 1104.00 1225.57 b 9412.71
1980 1634.98 b 1494.50 1234.00 464.50 213.00 33.00 3.50 18.50 162.50 598.00 859.14 a 1407.63 d 8123.25
1981 1385.00 1156.81 a 904.50 437.59 a 285.00 42.00 4.50 3.50 159.00 570.00 875.00 1669.35 a 7492.25
1982 2128.50 1487.00 1207.00 680.00 283.00 165.50 0.00 42.50 260.00 647.00 1234.00 1331.97 a 9466.47
1983 1367.00 1113.50 1109.00 750.00 c 373.50 105.50 1.00 0.00 247.00 625.17 a 1114.00 2091.00 8896.67
1984 1558.50 0.00 z 0.00 z 631.00 373.50 45.00 6.50 11.00 370.50 603.50 1071.00 1704.00 6374.50
1985 1711.00 1423.50 1031.50 496.50 210.80 a 208.00 0.00 51.50 327.00 606.00 1491.00 1737.50 9294.30
1986 1447.00 1454.00 863.87 a 654.00 270.00 39.50 0.00 51.00 266.00 527.50 1138.39 b 1203.50 7914.76
1987 1282.00 956.50 1033.50 367.50 118.50 14.50 9.00 51.00 161.00 637.50 887.50 1269.00 6787.50
1988 1685.00 1444.50 998.50 580.50 133.00 5.00 1.00 28.50 200.00 605.00 1043.00 1373.50 8097.50
1989 1476.50 1640.50 1261.50 596.00 240.00 94.00 0.00 12.50 220.00 522.00 1053.00 1737.50 8853.50
1990 1207.00 1195.50 912.00 638.50 316.00 65.00 15.50 23.50 157.00 619.50 923.50 1629.50 7702.50
1991 1651.50 1054.50 979.50 534.50 238.00 7.00 17.50 12.50 221.00 612.50 1197.00 1234.00 7759.50
1992 1311.50 1055.50 899.00 662.00 240.00 93.50 81.00 99.00 218.00 575.00 1120.50 1583.50 7938.50
1993 1705.00 1497.50 1065.50 670.50 298.00 133.50 45.00 44.50 313.00 598.00 1157.50 1484.50 9012.50
1994 2009.83 a 1611.50 989.50 596.50 197.00 35.00 24.50 63.50 165.50 488.00 968.50 1458.00 8607.33
1995 1635.00 1319.50 1172.00 799.50 347.50 74.00 9.50 3.00 248.50 589.50 1147.50 1485.50 8831.00
1996 1866.00 1351.00 1358.00 753.00 388.50 73.00 17.50 11.00 264.50 647.00 1430.00 1803.34 b 9962.84
1997 1864.00 1410.50 1304.00 797.00 363.50 17.00 24.50 38.00 134.00 529.07 a 1190.50 1176.50 8848.57
1998 1580.47 b 991.00 1256.00 519.00 188.50 134.00 6.00 3.50 115.00 560.50 973.50 1314.50 7641.97
1999 1700.00 1010.50 940.00 612.50 264.00 81.50 5.50 10.00 293.00 602.50 761.50 1222.50 7503.50
2000 1543.00 1132.50 879.00 641.00 239.00 86.00 33.00 24.50 0.00 z 495.00 1239.50 1905.00 8217.50
2001 1523.00 1668.00 1246.50 602.00 217.50 88.00 15.00 14.00 193.50 0.00 z 747.50 1408.50 7723.50
2002 1366.00 1067.50 1369.00 675.00 452.00 46.50 4.50 35.00 204.00 872.50 1000.50 1271.00 8363.50
2003 1556.00 1460.50 1162.00 571.00 321.00 85.50 1.00 16.00 236.00 468.00 1227.00 1283.00 8387.00
2004 1720.00 1334.00 928.50 576.00 354.50 132.00 47.50 90.00 171.00 569.00 912.50 1346.50 8181.50
2005 1642.50 1160.00 1032.50 509.50 353.50 28.50 12.50 19.50 119.00 546.50 936.50 1431.50 7792.00
2006 1156.00 1245.00 1059.00 459.50 262.50 32.00 0.00 1.00 276.00 711.50 1002.00 1222.50 7427.00
2007 1604.50 1591.50 922.00 717.50 176.50 40.00 2.50 37.50 203.00 511.50 1002.00 1616.65 a 8425.15
2008 1733.50 1486.50 1130.50 714.50 367.50 69.50 6.00 17.00 189.50 582.00 1006.50 1721.00 9024.00
2009 1743.50 1381.00 1245.00 677.50 303.50 137.00 28.00 57.50 113.00 804.00 795.00 1697.00 8982.00
2010 1758.50 1547.50 946.50 462.00 338.50 40.00 2.00 4.50 219.50 490.00 1032.00 1616.50 8457.50
2011 1790.50 1512.00 1350.50 694.50 355.00 74.50 1.50 4.00 228.00 477.00 981.00 1285.50 8754.00
2012 1325.00 1239.00 642.00 499.50 248.00 29.50 0.00 29.50 204.83 a 665.00 1078.50 1525.00 7485.83
2013 1617.00 1359.50 1419.50 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 4396.00
Period of Record Statistics
MEAN 1654.22 1380.93 1101.69 611.85 291.69 75.10 13.23 28.02 205.78 562.34 1032.36 1487.54 8372.39
S.D. 240.70 220.64 181.70 110.26 94.23 43.72 16.12 23.25 74.21 117.15 149.54 199.62 677.06
SKEW 0.11 0.23 0.16 0.06 0.04 0.77 2.05 0.87 0.69 0.62 0.40 0.39 -0.04
MAX 2226.32 2130.50 1667.50 883.45 571.00 208.00 83.50 99.00 479.50 942.73 1491.00 2091.00 9962.84
MIN 1156.00 903.50 642.00 367.50 92.50 5.00 0.00 0.00 67.50 260.00 747.50 1077.50 6787.50
NO YRS 95 95 97 96 96 92 94 93 92 94 96 95 71