LA DELLE 7 NE, SOUTH DAKOTA

Monthly Total Heating Degree Days

(394661)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197410
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
1897 1721.00 1516.50 1416.50 608.50 306.00 142.50 6.00 56.50 69.50 499.50 1163.00 1580.50 9086.00
1898 1421.50 1238.00 1106.00 601.00 342.00 61.50 3.00 f 0.00 z 0.00 z 488.00 k 1146.00 1520.00 7436.00
1899 1569.50 1683.00 1533.50 634.50 292.95 a 64.00 9.50 11.50 250.50 528.50 765.50 1554.50 8897.45
1900 1404.50 1526.00 1193.00 396.50 143.50 55.00 14.00 5.50 241.03 a 369.50 1138.97 a 1252.00 7739.50
1901 1470.43 a 1431.11 a 1036.00 546.21 a 234.57 a 71.38 a 4.50 5.00 240.56 c 425.00 519.00 m 1489.00 6953.75
1902 1475.50 1361.50 985.50 651.50 193.00 119.50 15.00 39.00 262.50 515.63 a 984.00 1667.50 8270.13
1903 1592.50 1615.50 1093.50 576.50 233.00 86.50 28.50 36.00 245.17 a 455.00 785.00 h 1052.00 k 5962.17
1904 1821.00 1715.66 a 1159.50 764.50 265.50 100.86 a 29.81 e 32.00 165.52 a 402.48 a 852.50 1463.95 b 8773.28
1905 1861.50 1562.00 880.92 a 648.00 398.87 a 72.00 33.00 1.50 81.00 673.00 925.00 1404.09 b 8540.87
1906 1454.00 1293.50 1352.00 469.00 283.50 83.50 10.50 42.00 118.50 556.93 b 1064.00 1485.00 8212.43
1907 1885.12 b 1315.00 967.00 835.00 408.00 i 82.50 4.65 a 40.50 244.50 558.00 967.50 1233.50 8133.27
1908 1336.58 e 1355.00 1063.00 506.00 298.00 71.50 12.06 d 32.50 45.00 410.00 f 941.00 1439.95 a 7100.58
1909 1651.50 1362.08 d 1090.50 773.50 299.50 43.00 11.50 20.00 39.50 r 552.50 982.22 c 1752.50 8538.80
1910 1715.50 1633.00 578.00 414.50 356.00 0.00 z 8.00 26.35 a 126.43 b 122.00 j 0.00 z 1461.81 b 6319.59
1911 1775.50 1438.64 c 840.10 a 609.83 a 184.50 6.00 14.47 a 23.00 h 241.00 671.00 1307.78 c 1407.29 b 8496.11
1912 2061.50 1413.50 1314.40 a 458.00 243.57 c 134.00 14.00 28.00 321.00 e 0.00 z 0.00 z 1337.98 c 7325.95
1913 1577.12 c 1439.31 b 952.50 f 491.00 335.83 a 36.00 15.00 2.00 200.00 687.00 794.50 1179.00 6756.77
1914 1403.61 d 1611.00 1032.00 599.00 265.50 20.69 a 2.00 36.50 f 98.00 235.50 g 202.50 s 1743.00 6774.80
1915 1682.00 1156.50 1361.50 331.00 420.00 112.50 59.00 59.50 147.00 517.50 73.50 w 1388.50 7235.00
1916 2003.50 1552.00 1056.00 629.00 301.00 89.50 0.00 z 56.12 b 184.00 h 758.90 e 1093.39 b 1767.52 a 9306.93
1917 1810.18 c 1642.67 a 1184.50 716.50 387.50 a 133.97 a 23.52 b 61.50 107.00 h 0.00 z 715.50 1730.32 a 8406.14
1918 1457.00 f 1307.38 b 780.50 687.50 201.00 g 61.00 17.05 a 11.00 299.46 b 0.00 z 901.67 c 1238.50 5304.07
1919 859.00 h 1371.48 a 1126.50 492.50 f 124.50 i 5.00 h 0.00 f 12.00 132.78 c 761.80 d 1227.22 c 1653.00 6284.78
1920 0.00 z 1298.50 1122.64 c 859.00 239.50 108.62 a 14.50 32.15 d 0.00 z 367.72 b 1070.50 1022.50 h 5113.14
1921 1357.00 1142.50 950.00 517.50 307.50 41.00 i 0.00 z 22.00 239.00 467.00 f 0.00 z 980.00 g 4535.50
1922 1693.00 1766.59 a 1137.50 643.00 279.00 72.00 40.76 d 1.00 i 0.00 z 445.50 906.50 1548.50 8532.35
1923 1421.35 a 1481.93 a 948.00 g 588.00 262.95 c 51.72 a 4.00 5.00 v 38.50 o 563.00 797.00 886.00 h 5169.95
1924 1838.00 1193.50 1135.50 566.50 299.50 m 139.00 56.50 29.50 202.50 265.71 c 1018.00 1756.50 8201.21
1925 1700.00 1198.30 a 878.91 d 345.50 383.50 65.50 43.00 50.78 b 93.46 d 745.50 f 556.50 j 1442.50 6201.44
1926 1588.50 1090.50 1104.50 151.00 q 144.67 a 110.50 5.50 5.00 198.46 d 522.50 1116.50 1544.00 7430.63
1927 1489.50 1158.00 933.50 577.00 285.50 h 133.00 21.00 26.50 196.50 406.00 0.00 z 1916.00 6857.00
1928 1478.50 1235.50 891.00 764.46 b 188.00 83.00 1.50 3.00 j 211.50 523.00 783.50 f 1197.12 a 6573.58
1929 2043.33 b 1625.56 a 930.00 564.00 370.00 63.62 a 0.00 c 6.50 252.50 f 362.50 j 1115.00 1460.50 8178.50
1930 1884.44 e 934.23 b 972.37 a 461.00 326.00 72.00 6.72 a 0.00 l 176.00 570.00 919.00 1239.47 b 7561.22
1931 1198.00 908.50 998.72 a 492.00 391.12 a 27.00 6.50 9.62 b 98.50 397.50 911.50 1326.00 6764.95
1932 1625.00 1345.00 0.00 z 485.00 189.00 4.00 10.00 7.00 128.50 613.50 1011.50 1591.50 7010.00
1933 1288.00 1411.00 970.50 562.50 241.50 11.00 1.00 11.88 a 85.00 0.00 z 377.50 r 1464.75 a 6047.13
1934 1365.15 d 1159.41 a 1069.00 567.00 80.60 a 12.50 5.68 a 50.50 260.69 a 368.90 a 818.00 1444.50 7201.93
1935 1629.50 1002.00 893.50 705.00 a 391.24 b 133.00 0.00 66.81 b 140.89 b 587.50 1165.50 1455.50 8170.44
1936 2071.00 2154.50 1038.50 730.86 a 151.50 60.54 b 0.00 3.00 132.00 596.00 1134.50 1398.50 9470.90
1937 2055.00 1475.00 1113.00 672.50 196.50 105.00 7.50 1.50 171.00 598.30 a 1064.00 1574.50 9033.80
1938 1672.00 1384.00 923.00 529.50 303.50 61.50 0.00 1.55 a 87.00 309.50 1107.32 b 1319.00 7697.87
1939 1339.00 1625.00 1019.50 618.00 105.00 56.38 a 0.00 26.35 a 172.50 533.50 852.50 1138.00 7485.73
1940 1908.00 1357.00 1175.00 636.50 309.50 58.89 c 2.50 31.00 a 110.00 299.15 a 1134.00 1306.50 8328.04
1941 1521.50 1361.50 1083.50 449.50 151.00 82.00 14.50 37.72 a 191.90 a 496.00 905.50 1179.50 7474.11
1942 1379.00 1229.50 963.50 427.50 367.35 a 81.00 20.00 10.50 292.00 532.00 972.50 1567.50 7842.35
1943 1890.50 1239.50 1246.00 532.00 389.00 107.59 a 1.50 20.50 262.24 a 438.00 1021.00 1303.00 8450.83
1944 1253.50 1394.50 1283.50 717.50 192.00 93.50 13.50 46.00 203.50 473.50 931.03 a 1407.50 8009.53
1945 1546.00 1249.50 815.00 657.41 a 406.00 196.50 43.50 17.00 246.00 515.00 1048.00 1674.50 8414.41
1946 1563.00 1325.00 764.50 395.00 368.00 84.31 a 3.00 69.00 197.00 603.50 1077.50 1352.50 7802.31
1947 1368.98 c 1420.50 1138.50 717.50 411.00 97.00 18.00 9.50 195.00 324.00 1229.48 a 1565.50 8494.96
1948 1710.34 b 1521.38 c 1277.95 b 418.00 261.29 c 69.00 8.55 b 31.00 90.00 527.00 960.00 b 1455.50 8330.02
1949 1759.00 1438.00 1081.50 514.00 176.00 45.50 15.00 31.52 a 239.00 509.50 765.00 a 1455.00 8029.02
1950 1967.95 c 1321.60 c 1251.50 831.50 372.00 75.50 29.50 57.00 149.50 419.00 1114.00 1566.05 c 9155.10
1951 1684.50 1171.00 1386.00 706.55 a 222.00 156.43 b 28.50 25.00 248.33 c 571.50 1110.50 1681.00 8991.31
1952 1720.00 1273.50 1274.50 511.00 267.00 20.00 11.50 16.65 d 125.56 c 613.80 a 965.17 a 1337.00 8135.68
1953 1488.50 1250.00 1018.50 734.50 305.00 57.50 18.00 7.00 167.00 333.00 866.00 1424.50 7669.50
1954 1813.50 857.50 1161.00 553.00 412.00 89.50 1.50 1.03 a 151.50 583.50 816.35 d 1321.00 7761.38
1955 1517.00 1477.50 1126.00 322.24 a 127.00 84.00 0.00 9.50 200.69 a 467.07 a 1295.00 1742.50 8368.50
1956 1741.50 1590.50 1202.50 742.24 a 237.00 16.00 9.50 35.50 209.00 324.50 1000.50 1224.00 8332.74
1957 1781.00 1272.00 1052.50 615.00 300.00 64.50 0.00 f 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5085.00
1958 1291.67 a 1356.00 1078.50 562.50 169.00 140.50 22.50 29.00 130.00 448.50 917.07 a 1538.12 a 7683.35
1959 1699.50 1512.56 c 895.50 578.28 a 255.00 38.79 a 7.50 1.55 a 178.50 671.00 1235.56 c 1131.50 8205.23
1960 1671.93 a 1510.50 1532.00 630.54 b 260.40 a 81.00 7.50 10.52 c 196.50 327.50 o 908.50 1547.79 c 8357.17
1961 1711.20 a 1232.00 869.00 546.50 g 325.50 d 53.50 0.00 z 0.00 j 208.50 l 484.08 e 952.78 c 1254.50 g 5628.06
1962 1737.66 c 0.00 z 0.00 z 602.50 112.50 i 29.50 f 24.59 b 0.00 z 0.00 z 0.00 z 0.00 z 720.00 p 2364.75
1963 1900.09 b 1326.50 791.00 514.00 205.50 20.50 0.00 12.50 66.00 214.50 913.50 1704.50 7668.59
1964 1394.50 1124.50 1226.00 502.00 172.50 63.00 2.50 59.62 e 223.45 a 512.03 b 1013.50 1188.50 i 6293.60
1965 1780.00 1439.50 1402.50 613.00 239.00 42.50 0.50 27.50 471.00 0.00 z 961.00 1145.00 8121.50
1966 1914.00 0.00 z 882.50 746.00 327.50 89.00 0.00 79.00 215.50 511.00 1054.82 b 1402.00 7221.32
1967 1497.50 1438.00 930.00 538.50 397.50 24.50 49.50 18.00 0.00 z 0.00 z 0.00 z 1156.00 g 4893.50
1968 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1969 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.50 q 6.56 e 96.35 d 471.50 i 712.00 g 1386.50 1489.40
1970 0.00 z 0.00 z 0.00 z 265.50 n 213.26 b 30.54 b 6.00 g 1.50 l 108.50 i 0.00 z 0.00 z 0.00 z 243.79
1971 0.00 z 0.00 z 0.00 z 200.50 s 225.50 j 20.56 c 39.00 j 4.02 d 117.00 m 338.50 j 550.50 m 1238.00 g 24.57
1972 1890.47 b 1166.00 h 901.50 f 651.00 228.88 a 58.00 g 35.59 d 45.35 d 0.00 z 459.50 g 841.50 g 0.00 z 2851.29
1973 0.00 z 0.00 z 0.00 z 0.00 z 146.50 l 6.00 n 6.50 p 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1974 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 243.50 p 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1645.39 1374.19 1076.72 588.62 274.66 73.92 14.32 26.22 182.97 499.48 1002.55 1460.07 8190.95
S.D. 219.95 212.44 187.22 121.74 86.03 39.85 14.38 20.24 75.44 119.19 137.57 180.79 597.47
SKEW 0.04 0.38 0.21 -0.02 -0.12 0.48 1.34 0.66 0.78 -0.12 0.13 0.18 0.01
MAX 2071.00 2154.50 1533.50 859.00 420.00 196.50 59.00 79.00 471.00 761.80 1307.78 1916.00 9470.90
MIN 1198.00 857.50 578.00 322.24 80.60 4.00 0.00 1.03 45.00 214.50 715.50 1131.50 6764.95
NO YRS 69 69 67 69 67 69 66 64 60 55 57 63 34