ACADEMY 2NE, SOUTH DAKOTA

Monthly Total Heating Degree Days

(390043)

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
1898 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 125.00 602.00 1040.00 1325.00 3092.00
1899 1384.00 1583.50 1432.72 a 560.00 283.00 20.50 3.50 8.50 152.00 469.00 675.00 1371.50 7943.22
1900 1165.50 1368.00 1005.50 374.00 109.53 a 16.55 a 7.00 1.50 160.34 a 307.00 991.00 1110.00 6615.93
1901 1225.00 1281.00 936.50 482.50 163.50 40.50 0.00 5.00 193.50 342.00 832.00 1335.50 6837.00
1902 1274.00 1262.50 919.50 564.50 151.00 100.00 1.55 a 15.50 165.00 a 410.50 845.50 1526.50 7236.05
1903 1383.00 1412.00 1001.50 487.00 194.50 71.00 12.00 28.93 a 218.00 335.00 936.00 1333.00 7411.93
1904 1527.02 b 1459.00 969.00 637.76 a 194.78 a 49.00 12.50 5.68 a 119.46 b 322.00 664.66 a 1240.50 7201.36
1905 1618.20 a 1439.41 a 724.00 560.00 348.50 64.00 10.50 0.00 a 61.00 583.00 748.00 1111.00 7267.61
1906 1291.67 a 1134.50 1327.00 413.00 227.50 57.00 12.00 15.50 116.50 442.78 a 915.52 a 1245.50 7198.47
1907 1703.00 1113.50 573.00 f 720.00 405.50 59.00 0.00 11.50 172.00 387.50 a 804.50 1082.50 6459.00
1908 1164.05 a 1171.00 889.50 379.50 j 305.35 a 85.50 11.00 32.00 92.00 486.50 818.50 1265.50 6320.90
1909 1459.00 1171.50 1013.00 691.50 267.00 52.00 6.50 2.50 103.39 b 450.53 a 862.00 1671.00 7749.93
1910 1510.50 1358.00 440.41 b 357.00 313.74 b 78.62 a 0.00 18.00 127.50 284.68 a 934.00 1328.50 6750.96
1911 1391.50 1210.50 691.50 532.50 206.00 3.50 7.00 50.50 103.50 565.50 1127.00 1258.00 7147.00
1912 1754.50 1223.50 1203.00 415.50 181.50 98.50 9.00 10.50 305.50 379.50 715.50 1068.50 7365.00
1913 1340.00 1297.50 1144.00 433.00 307.00 36.50 0.00 0.00 137.00 516.00 654.00 1085.00 6950.00
1914 1100.00 1444.00 1002.50 531.21 a 196.00 5.00 0.00 a 28.00 68.00 350.50 689.50 1523.50 6938.21
1915 1477.00 1141.00 1349.53 a 316.00 346.50 78.50 36.00 48.50 166.00 308.00 756.50 1169.00 7192.53
1916 1755.00 1273.00 881.00 556.50 250.07 a 98.00 0.00 11.50 154.50 513.05 a 837.00 1560.50 7890.12
1917 1457.50 1449.50 1090.50 659.00 340.50 86.50 2.00 17.50 124.50 651.52 a 631.50 1554.50 8065.02
1918 1774.00 1195.50 664.50 604.50 182.00 19.00 8.02 b 0.00 217.00 385.00 877.76 a 1153.50 7080.78
1919 1143.50 1324.30 a 997.50 562.00 237.00 80.00 0.00 2.50 107.00 655.50 1122.50 1441.50 7673.30
1920 1361.50 1158.00 995.00 794.00 219.50 68.00 4.00 16.50 113.00 337.00 998.00 1252.50 7317.00
1921 1138.00 873.00 753.50 457.50 224.00 24.50 2.50 21.00 108.00 396.50 1004.50 1178.00 6181.00
1922 1499.50 1454.50 922.50 495.50 178.50 21.50 17.50 2.50 61.00 384.50 782.50 1383.50 7203.50
1923 1195.00 1250.50 1032.50 545.50 266.00 56.00 0.00 19.50 87.00 487.50 696.21 a 1027.00 6662.71
1924 1615.50 1106.50 1116.00 516.00 408.00 102.50 15.50 8.50 167.00 261.00 801.50 1508.50 7626.50
1925 1485.00 976.50 822.00 403.50 408.00 61.50 20.00 0.50 74.50 706.50 798.50 1184.50 6941.00
1926 1264.00 863.00 932.00 475.50 95.50 39.50 0.00 0.00 153.50 383.50 957.50 1278.75 a 6442.75
1927 1244.00 922.00 845.02 b 505.50 292.50 91.50 6.50 26.00 173.50 276.50 985.50 1698.50 7067.02
1928 1228.50 1043.50 832.50 631.50 139.00 67.76 a 0.00 14.50 139.00 425.50 859.00 1093.00 6473.76
1929 1760.50 1446.00 765.50 472.50 281.50 69.11 b 0.52 a 4.00 242.50 420.50 1026.50 1253.00 7742.12
1930 1696.50 785.04 a 934.00 400.00 301.00 49.50 2.50 3.50 95.00 531.50 782.50 981.00 6562.04
1931 887.00 819.50 955.50 479.00 325.00 16.50 1.00 13.50 73.00 325.00 856.00 1184.50 5935.50
1932 1470.00 1048.50 861.00 f 0.00 z 152.93 a 8.00 1.55 a 0.00 88.50 566.78 a 779.50 1386.00 5501.77
1933 1016.50 1243.50 844.00 493.50 276.50 1.07 b 0.00 1.00 38.50 380.00 745.00 1208.00 6247.57
1934 1066.83 b 1005.00 889.50 436.50 54.00 6.50 4.50 23.00 218.00 333.00 730.00 1210.00 5976.83
1935 1357.50 867.00 816.00 642.00 387.00 81.50 0.00 50.00 86.50 582.36 c 1024.50 1260.50 7154.86
1936 1873.50 2002.50 941.00 624.00 113.50 35.69 a 0.00 0.00 92.00 447.84 c 0.00 z 1116.00 c 7246.03
1937 1960.50 1266.50 1008.00 621.00 168.50 73.50 0.00 0.00 117.00 408.50 934.00 1316.50 7874.00
1938 1334.50 1263.50 811.00 541.03 a 278.00 33.00 0.00 0.00 56.50 244.79 b 509.00 p 1136.00 5698.33
1939 1081.90 a 1304.00 881.50 569.50 115.73 a 67.50 0.00 8.02 b 95.50 431.50 588.50 1013.50 6157.15
1940 1820.00 1187.00 1059.00 594.00 251.00 26.00 0.00 2.50 44.50 222.00 1056.50 1143.00 7405.50
1941 1375.50 1182.50 1033.00 422.50 128.00 67.50 13.00 7.00 137.00 483.50 837.41 a 1026.10 a 6713.01
1942 1239.50 1174.00 946.00 419.50 372.50 51.00 3.00 0.00 276.00 539.00 619.00 i 1306.50 6327.00
1943 1656.00 1028.50 1146.00 484.66 a 328.50 96.00 0.00 0.00 f 149.50 411.00 887.50 1149.50 7337.16
1944 1090.50 1294.00 1212.00 673.00 181.00 77.50 3.00 8.00 128.50 382.00 851.00 952.50 h 5900.50
1945 1159.50 1050.00 665.50 610.50 359.00 180.00 17.00 8.00 215.00 372.00 832.50 1463.00 6932.00
1946 1222.50 1092.00 648.50 367.50 369.00 80.00 2.50 21.00 165.50 540.00 933.60 e 1157.50 6599.60
1947 1150.00 1291.00 1058.00 620.00 305.50 71.50 9.00 0.00 140.00 258.00 0.00 z 1238.00 6141.00
1948 1450.00 1317.50 991.47 b 367.00 239.00 55.50 0.00 16.00 47.50 481.50 646.50 g 1370.50 6335.97
1949 1706.00 1322.00 986.00 434.50 168.50 22.78 c 1.00 13.00 178.00 439.50 595.71 b 1279.04 d 7146.03
1950 1763.00 1222.50 1234.00 691.11 c 329.00 73.20 e 4.28 b 20.00 129.00 316.50 741.50 f 992.50 g 5782.59
1951 1401.50 1003.00 1277.20 a 643.97 a 219.58 a 99.60 e 38.50 21.50 178.00 f 510.00 988.93 b 1625.90 b 7829.67
1952 1529.50 1082.50 1207.45 a 475.50 168.00 f 4.50 j 2.14 b 1.15 d 88.50 500.50 888.21 b 1233.28 a 7008.73
1953 1219.33 a 1127.78 a 822.05 c 668.00 270.00 32.07 a 6.00 1.60 b 81.00 285.20 a 728.28 a 1183.34 b 6424.66
1954 1501.95 a 694.81 a 1089.00 452.31 d 373.19 e 64.66 a 0.00 d 0.00 92.14 b 532.88 b 652.24 a 1180.07 a 6633.25
1955 1292.00 1344.50 1009.00 261.21 a 98.88 b 79.00 0.00 a 0.00 g 0.00 z 295.50 n 1160.17 a 1577.00 6821.76
1956 1528.00 1346.50 1029.00 689.50 219.67 b 10.00 0.00 19.78 b 117.00 235.50 873.50 1059.50 7127.95
1957 1637.83 a 1068.50 1024.55 a 599.00 313.62 a 50.00 0.00 3.74 b 151.00 455.04 c 880.50 990.00 7173.78
1958 1181.50 1334.67 a 1166.00 534.00 133.62 b 78.50 4.65 a 4.50 84.00 354.95 a 810.50 1329.00 7015.89
1959 1549.00 1329.00 788.43 a 513.50 234.50 23.50 2.50 0.00 165.50 581.50 1090.00 1011.00 7288.43
1960 1422.50 1415.00 1358.00 523.00 235.00 33.50 0.50 1.50 127.00 353.50 801.50 1307.00 7578.00
1961 1433.00 1004.37 a 811.50 705.00 c 290.88 a 13.93 b 0.00 a 0.00 232.50 357.53 a 859.50 1381.00 7089.22
1962 1457.00 1269.50 1278.00 499.00 119.50 56.00 1.50 m 0.00 z 153.00 176.00 q 386.50 m 1318.00 6150.00
1963 0.00 z 1038.50 771.00 423.62 a 0.00 z 1.00 m 0.00 0.52 a 37.50 167.00 767.50 1442.00 4647.64
1964 1177.50 1032.50 1114.00 444.31 a 126.50 28.45 a 0.00 37.00 116.50 375.50 905.50 1448.50 6806.26
1965 1471.50 1142.00 1278.00 459.00 142.00 11.00 0.00 11.50 371.00 311.50 846.50 1053.00 7097.00
1966 1702.50 1289.00 770.50 630.00 236.50 31.00 0.00 23.00 130.00 377.50 903.00 1247.50 7340.50
1967 1252.50 1188.50 854.64 b 455.00 358.50 33.00 22.50 10.00 79.00 426.00 855.50 1284.00 6819.14
1968 1412.00 1206.00 685.00 492.00 317.00 31.00 9.00 8.50 102.00 362.00 855.00 1459.00 6938.50
1969 1664.00 1158.00 1246.50 369.50 157.00 102.00 0.00 3.00 45.50 633.00 795.00 1214.50 7388.00
1970 1638.87 a 980.00 1106.38 b 548.00 132.00 25.00 4.50 0.00 129.50 374.00 g 931.03 a 1458.72 d 6954.00
1971 1573.00 1180.00 990.00 448.00 233.50 9.50 15.00 0.00 153.50 387.00 834.50 1280.00 7104.00
1972 1530.00 1269.50 881.00 528.00 207.50 27.00 17.00 12.00 110.50 516.00 976.50 1422.00 7497.00
1973 1304.50 1034.00 726.00 511.00 224.00 16.50 0.00 0.00 143.28 a 316.50 940.50 1356.25 a 6572.53
1974 1343.00 999.50 803.50 447.50 225.00 65.00 0.00 22.50 171.00 349.78 a 824.50 1139.00 6390.28
1975 1300.50 1267.50 1093.00 631.50 171.00 41.50 2.00 1.50 135.50 387.50 917.00 1190.00 7138.50
1976 1371.50 855.00 896.00 373.00 190.00 21.00 0.00 b 0.00 97.00 545.00 1026.50 1273.00 6648.00
1977 1652.00 931.50 845.00 313.00 61.00 4.50 0.00 a 9.00 113.50 458.00 897.50 1356.77 a 6641.77
1978 1853.00 1484.00 a 947.00 552.00 210.50 41.50 3.00 11.76 b 67.00 394.50 964.00 1409.00 7937.26
1979 1793.00 1495.00 933.21 b 559.00 292.50 42.00 7.00 19.50 52.00 419.57 b 961.00 981.00 7554.78
1980 1384.15 a 1230.35 b 979.00 414.00 163.50 9.50 0.00 9.00 65.50 462.50 708.00 1179.00 6604.50
1981 1116.00 b 975.00 742.00 289.50 228.50 15.50 15.00 0.50 63.50 422.12 a 694.00 1344.50 5906.12
1982 1768.00 1135.50 950.00 600.50 162.50 74.00 0.00 5.50 156.50 479.50 977.00 1134.00 7443.00
1983 1115.00 874.50 929.00 667.00 289.00 60.00 0.00 0.00 127.50 437.00 953.50 1836.50 7289.00
1984 1273.00 925.00 1045.50 554.00 251.50 18.50 1.00 0.00 238.00 437.50 819.50 1347.00 6910.50
1985 1467.00 1197.00 819.50 361.50 105.50 104.00 9.00 54.00 244.50 447.00 1317.50 1527.50 7654.00
1986 1147.00 1190.00 665.50 522.00 166.50 15.00 1.00 47.00 203.00 485.50 1027.50 1114.50 6584.50
1987 1226.50 889.50 949.00 418.50 122.50 23.50 9.50 69.00 140.50 610.00 809.50 1189.50 6457.50
1988 1667.50 1367.00 907.50 585.00 177.00 1.00 15.50 20.50 143.50 564.50 857.50 1221.50 7528.00
1989 1182.50 1504.00 1139.50 524.50 256.00 95.50 4.50 9.50 177.00 476.00 958.00 1623.00 7950.00
1990 1069.50 1073.00 870.50 601.50 308.50 39.50 22.50 10.50 127.50 530.50 805.00 1506.00 6964.50
1991 1525.50 944.50 887.00 479.00 234.00 6.50 0.50 4.50 179.00 588.00 1138.00 1146.00 7132.50
1992 1101.00 947.50 838.50 670.50 231.50 67.00 59.50 88.50 168.50 505.50 1037.50 1388.50 7104.00
1993 1538.00 1375.50 980.50 636.00 271.50 109.00 15.50 30.00 304.00 557.00 1071.00 1198.00 8086.00
1994 1662.00 1416.00 840.00 600.50 193.00 36.50 25.00 24.50 146.00 432.50 870.50 1260.50 7507.00
1995 1421.00 1027.50 1026.50 774.00 376.50 65.00 14.00 10.50 221.00 557.50 1060.00 1263.00 7816.50
1996 1623.50 1175.00 1227.00 676.50 356.50 35.50 8.00 0.00 222.50 508.00 1226.00 1598.50 8657.00
1997 1636.00 1132.50 927.00 707.50 358.00 19.00 20.50 16.50 113.50 463.50 986.00 1097.50 7477.50
1998 1400.50 885.00 1176.00 549.00 178.50 123.00 4.00 0.00 53.00 458.50 802.00 1148.00 6777.50
1999 1418.00 866.50 880.50 575.00 248.50 61.00 5.00 4.50 212.50 498.50 632.50 1085.50 6488.00
2000 1285.00 972.00 760.50 561.50 214.50 88.50 9.50 5.00 147.50 417.00 1211.00 1666.00 7338.00
2001 1333.50 1422.00 1139.50 549.00 201.00 63.50 12.00 8.50 143.00 499.50 643.50 1186.50 7201.50
2002 1223.00 948.50 1304.00 544.50 377.50 21.50 4.50 19.00 151.00 725.50 919.00 1135.00 7373.00
2003 0.00 z 1246.00 989.00 493.50 297.50 81.00 0.00 10.00 167.50 372.50 1020.50 1129.00 5806.50
2004 1487.50 1229.00 792.50 497.00 256.50 98.00 20.00 55.00 118.00 464.00 805.50 1176.50 6999.50
2005 1499.00 945.00 944.00 482.50 319.00 33.00 6.50 5.50 62.00 454.00 820.50 1400.00 6971.00
2006 921.00 1129.50 989.00 410.00 215.50 21.50 0.50 6.50 238.00 596.50 874.50 1162.00 6564.50
2007 1360.50 1372.00 735.50 627.00 142.50 33.00 1.50 6.50 135.00 429.50 826.00 1351.50 7020.50
2008 1451.50 1329.50 993.50 683.50 357.00 45.50 8.00 2.50 146.00 519.50 902.50 1531.00 7970.00
2009 1431.00 1068.50 1002.50 668.50 273.00 0.00 z 0.00 z 28.00 115.00 743.50 737.50 1538.50 7606.00
2010 1557.00 1410.50 854.50 439.50 329.00 27.00 0.00 0.50 145.50 f 415.50 924.50 1414.00 7372.00
2011 1617.50 1304.00 1124.00 610.50 332.50 61.00 0.00 2.00 190.00 419.00 856.50 1141.00 7658.00
2012 1225.00 1101.50 520.50 412.50 203.50 36.50 0.00 19.00 133.50 553.87 a 875.50 1351.00 6432.37
2013 1362.50 1174.00 577.00 n 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2536.50
Period of Record Statistics
MEAN 1413.76 1178.48 959.72 528.39 240.33 50.76 6.20 12.77 138.20 443.27 878.92 1284.62 7095.18
S.D. 223.86 201.09 182.36 108.36 84.35 32.56 9.20 15.81 60.68 109.69 139.66 176.59 528.80
SKEW 0.11 0.38 0.13 -0.01 0.04 0.70 2.71 2.13 0.92 0.23 0.39 0.60 0.09
MAX 1960.50 2002.50 1432.72 794.00 408.00 180.00 59.50 88.50 371.00 743.50 1317.50 1836.50 8657.00
MIN 887.00 694.81 440.41 261.21 54.00 1.00 0.00 0.00 37.50 167.00 588.50 981.00 5906.12
NO YRS 113 115 112 112 112 111 112 111 112 112 108 113 94