CASTLEWOOD, SOUTH DAKOTA

Monthly Total Heating Degree Days

(391519)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201111
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
1893 1938.00 1668.00 1410.00 860.17 a 384.00 53.50 25.00 77.50 259.50 202.50 x 1162.50 1710.50 9548.67
1894 1909.00 1532.00 1055.03 a 478.00 k 162.00 m 36.50 8.27 a 26.00 j 0.00 z 429.00 j 1182.00 1288.50 7011.30
1895 1955.00 1615.00 1185.20 c 376.00 253.34 b 88.00 29.50 51.00 231.00 726.36 b 1191.72 a 1500.50 9202.63
1896 1616.50 1322.09 a 1397.00 611.00 27.50 z 86.00 47.05 c 62.52 a 159.00 p 691.19 d 1576.15 d 1419.00 8828.50
1897 1877.05 a 1505.50 1435.00 641.00 319.82 a 165.50 16.00 91.81 e 84.64 b 561.74 b 533.00 q 1580.50 8278.56
1898 1423.50 688.00 m 1078.11 d 666.67 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3168.28
1899 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
1900 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
1901 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
1902 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
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 0.00 z 0.00 z 0.00 z 0.00
1904 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
1905 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 881.25 b 1351.50 2232.75
1906 1400.50 1306.00 1373.50 514.50 327.00 138.00 52.00 40.50 134.00 606.50 1090.50 1451.50 8434.50
1907 1917.50 1359.56 a 1049.00 914.00 585.00 150.50 31.00 63.00 305.50 599.50 976.50 1344.00 9295.06
1908 1407.00 1412.00 1127.50 581.00 369.00 138.00 42.50 88.50 124.50 605.50 918.00 1422.50 8236.00
1909 1661.00 1343.00 1146.50 854.50 353.00 83.50 33.00 25.50 206.00 634.00 978.00 1752.50 9070.50
1910 1649.00 1577.00 630.00 504.50 442.00 140.50 13.50 66.50 220.50 403.50 0.00 z 1454.50 7101.50
1911 1782.50 1327.50 899.50 682.00 236.00 31.00 60.50 88.00 214.50 677.50 1324.00 1416.00 8739.00
1912 2065.50 1443.00 1349.50 554.00 278.00 187.50 35.50 52.50 357.50 526.00 893.50 1318.00 9060.50
1913 1584.50 1463.50 1282.50 573.50 410.00 75.00 18.00 10.00 246.00 703.50 809.50 1224.50 8400.50
1914 1436.50 1620.00 1121.50 647.00 284.50 51.00 7.50 76.00 162.50 407.00 908.00 1729.00 8450.50
1915 1679.50 1169.00 1261.50 365.50 449.50 182.50 105.50 111.50 233.50 502.50 928.50 1432.50 8421.50
1916 1957.00 1628.00 1149.00 693.00 350.50 180.00 0.00 75.00 256.00 661.50 1008.50 1753.00 9711.50
1917 1756.00 1625.50 1191.00 767.00 438.50 170.50 39.50 74.00 228.50 846.50 774.00 1763.00 9674.00
1918 1903.50 1349.00 825.50 743.00 242.50 79.00 30.50 29.00 359.50 478.50 927.00 1268.00 8235.00
1919 1294.00 1386.00 1115.00 658.50 332.50 87.00 0.00 37.00 174.50 761.00 1235.50 1631.50 8712.50
1920 1665.50 1368.50 1090.50 879.00 310.50 105.50 16.50 66.00 160.00 391.00 1061.00 1391.50 8505.50
1921 1346.00 1097.00 971.00 549.00 303.00 33.50 9.00 45.50 187.50 494.00 1213.50 1352.50 7601.50
1922 1640.50 1652.50 1104.00 602.50 218.50 33.00 40.00 16.50 132.50 461.50 890.00 1537.50 8329.00
1923 1460.50 1491.00 1291.00 662.00 306.00 79.00 3.50 56.50 134.50 632.00 843.50 1186.50 8146.00
1924 1777.00 1264.50 1205.50 642.00 524.50 145.00 48.00 51.50 273.00 352.50 1007.00 1756.50 9047.00
1925 1707.50 1238.00 933.50 382.00 416.00 107.50 49.50 18.50 128.00 934.00 1005.00 1478.00 8397.50
1926 1565.00 1129.50 1169.00 662.00 178.00 150.00 15.00 17.50 291.00 567.00 1182.50 1582.50 8509.00
1927 1526.00 1206.59 a 975.00 621.50 407.00 151.50 28.50 93.00 229.50 437.50 1152.50 1893.50 8722.09
1928 1542.50 1265.00 985.50 834.00 215.50 143.00 10.50 45.50 268.00 580.00 948.00 1238.50 8076.00
1929 1977.50 1657.00 985.50 607.50 416.00 117.50 4.00 19.50 330.50 545.00 1146.00 1493.00 9299.00
1930 1918.50 1000.50 1055.00 530.00 329.50 91.50 17.00 13.00 208.50 618.00 943.50 1284.00 8009.00
1931 1223.00 950.00 1029.00 551.50 390.00 33.50 11.50 38.50 111.50 433.00 915.50 1275.00 6962.00
1932 1609.50 1341.00 1336.00 570.50 242.50 13.00 28.00 22.00 207.00 657.50 1074.00 1575.50 8676.50
1933 1301.00 1420.00 1044.00 646.00 306.00 22.00 5.00 22.50 93.50 589.00 981.50 1488.00 7918.50
1934 1364.50 1231.50 1126.50 614.50 101.50 28.50 7.50 69.00 305.00 396.00 861.00 1503.50 7609.00
1935 1690.00 1048.00 949.50 728.00 424.00 129.00 0.00 68.50 156.50 616.00 1181.90 a 1478.50 8469.90
1936 2071.50 2092.00 1078.50 761.00 160.50 73.50 0.00 6.20 a 141.00 655.00 1124.50 1414.50 9578.20
1937 2042.50 1519.00 1192.00 735.00 223.00 109.50 5.00 4.00 198.62 a 625.50 1115.50 1577.50 9347.12
1938 1703.50 1401.50 971.00 555.50 335.50 72.41 a 0.00 4.50 140.50 318.27 a 1117.00 1358.50 7978.18
1939 1441.50 1628.00 1086.00 657.00 135.50 61.50 0.00 37.50 189.50 575.50 896.00 1141.00 7849.00
1940 1903.00 1393.00 1227.00 691.50 328.00 75.50 12.00 66.00 134.00 345.50 1180.50 1316.00 8672.00
1941 1540.00 1407.00 1106.50 477.00 164.50 103.50 33.00 25.00 163.50 511.00 933.50 1213.00 7677.50
1942 1403.50 1255.00 984.00 465.00 417.50 100.50 38.00 27.50 326.50 571.50 973.50 1594.00 8156.50
1943 1885.00 1273.50 1284.50 586.50 423.00 111.50 4.00 27.50 293.00 532.00 1063.00 1313.00 8796.50
1944 1224.50 1367.00 1283.00 754.00 235.50 87.00 34.00 70.00 217.50 525.50 931.00 1415.00 8144.00
1945 1552.00 1255.00 832.50 712.00 427.50 216.50 43.50 34.00 271.00 536.00 1073.00 1711.00 8664.00
1946 1584.50 1349.00 788.50 412.00 180.50 k 99.00 5.00 70.50 221.50 580.00 1067.50 1399.00 7576.50
1947 1392.50 1473.50 1170.50 726.50 404.00 122.59 a 26.19 b 9.50 0.00 z 349.00 1240.00 1563.71 e 8477.99
1948 1365.00 g 1208.50 g 1287.03 b 505.18 b 0.00 z 129.60 e 7.75 c 8.50 h 109.44 c 499.44 d 563.00 l 1452.35 a 3990.80
1949 1725.67 d 1513.17 d 1099.43 b 553.27 d 170.00 f 51.67 c 6.50 p 29.81 e 281.67 c 375.50 h 794.42 d 1457.52 a 7506.61
1950 317.50 z 1314.25 d 949.00 g 0.00 z 344.88 c 86.50 30.00 70.50 150.50 450.00 1183.00 1586.00 5215.62
1951 1766.00 1237.50 1420.50 716.50 261.84 c 151.50 34.44 d 42.07 c 214.00 j 595.56 e 1148.89 c 1653.50 9028.30
1952 1735.47 b 1308.62 a 1321.78 b 547.78 c 313.44 d 28.39 b 9.00 f 20.00 179.48 a 658.50 967.24 a 1390.02 c 8470.72
1953 1574.59 b 979.50 f 1034.62 c 773.57 b 330.50 56.00 27.26 b 5.00 200.56 c 385.36 b 893.00 1490.67 b 6771.13
1954 1808.33 a 917.28 c 1212.88 c 591.00 427.00 75.52 a 6.00 h 10.16 b 187.78 c 630.50 803.04 b 1320.08 a 7983.56
1955 1536.05 a 1463.58 d 1150.88 c 384.11 b 141.80 d 93.62 a 1.11 c 12.18 c 208.93 b 442.86 c 1313.00 1746.00 8494.10
1956 1711.41 b 1601.69 c 1261.50 785.50 276.50 19.00 13.20 d 38.23 a 243.89 c 365.11 d 1081.07 b 1298.00 8695.12
1957 1855.87 a 1273.44 c 1111.19 b 661.00 353.83 b 72.86 b 0.00 b 31.55 c 256.00 578.67 a 1007.50 1246.95 b 8448.85
1958 1384.67 a 1406.74 a 1104.00 630.52 a 185.48 a 176.67 c 35.43 c 26.23 e 159.64 b 489.91 c 1043.50 1589.27 a 8232.05
1959 1765.00 1515.63 a 972.62 c 598.50 293.50 51.00 14.50 0.00 c 200.89 b 731.50 1295.50 1221.50 8660.15
1960 1668.32 a 1505.50 1556.00 659.00 304.63 e 82.00 16.05 c 12.40 a 218.79 a 496.00 a 962.00 1537.60 a 9018.30
1961 1675.00 1238.50 961.52 a 762.50 370.97 a 77.59 a 14.50 6.50 292.50 d 520.00 1077.50 1608.68 c 8605.75
1962 1757.50 1454.50 1265.83 a 663.75 b 216.45 c 67.00 23.25 a 16.03 b 255.56 c 468.00 861.50 1412.10 b 8461.47
1963 1903.50 1338.00 901.14 b 527.00 289.33 a 30.00 a 1.07 b 27.12 c 123.00 260.92 a 917.07 a 1699.50 8017.65
1964 1403.00 1213.00 1259.00 559.14 a 199.43 a 69.64 b 4.00 66.81 b 241.55 a 537.33 a 1067.50 1664.00 8284.41
1965 1794.00 1462.50 1453.50 650.50 222.17 a 38.00 6.41 b 35.13 a 479.44 c 455.50 1005.50 1205.50 8808.16
1966 1887.00 1429.50 920.70 a 777.50 356.50 a 82.00 0.00 a 72.69 b 221.90 a 561.00 1093.00 1468.76 b 8870.54
1967 1551.60 b 1496.44 a 954.36 c 600.00 416.00 60.54 b 48.57 a 40.82 a 138.10 a 567.00 1033.45 a 1429.50 8336.38
1968 1588.00 1438.50 794.24 b 583.93 b 376.13 a 65.17 a 0.00 z 40.09 b 188.04 b 523.50 993.21 b 1554.65 a 8145.46
1969 1858.97 a 1307.70 a 1433.75 a 574.66 a 241.80 a 160.96 d 8.02 b 4.65 a 133.50 682.00 b 963.50 1380.03 b 8749.54
1970 1875.50 1315.00 1220.22 b 663.10 a 236.50 42.00 8.50 6.95 b 211.00 575.50 1055.89 b 1548.50 8758.67
1971 1823.00 1362.00 1070.50 548.57 b 306.26 b 24.64 b 42.00 22.98 b 223.33 c 484.50 1016.90 a 1536.00 8460.69
1972 1785.17 b 1562.89 a 1108.77 a 683.79 a 234.05 a 62.50 27.00 48.00 207.41 a 618.45 a 1050.50 1655.50 9044.04
1973 1517.97 a 1188.44 a 839.77 c 633.50 280.50 40.50 4.00 0.50 217.24 a 379.00 994.66 a 1557.00 7653.08
1974 1715.50 1291.00 1040.50 542.50 341.00 b 72.00 1.50 37.72 a 227.59 a 445.50 989.00 1382.60 a 8086.40
1975 1567.50 1428.00 b 1293.50 782.59 a 203.50 60.00 a 14.00 13.95 a 256.03 a 456.00 952.50 1469.00 8496.57
1976 1651.00 1095.79 a 1024.00 445.50 268.15 a 29.50 3.00 2.67 b 164.00 678.50 1186.50 1587.50 8136.11
1977 1997.90 b 1152.67 a 936.50 388.00 57.00 18.62 a 2.00 38.00 156.72 a 561.50 1139.50 1645.50 8093.91
1978 2011.79 b 1590.30 a 1120.81 b 624.83 a 237.50 52.50 11.88 a 25.32 a 129.83 a 536.50 1121.50 1554.81 b 9017.57
1979 2013.40 b 1660.00 1228.50 717.93 a 393.00 55.50 5.00 55.28 a 130.00 575.22 d 1047.50 1207.50 9088.83
1980 1573.77 a 1414.27 a 1172.83 a 495.58 d 192.64 c 26.00 10.00 8.27 a 166.03 a 539.29 b 870.60 e 1380.57 b 7849.85
1981 1411.50 1155.54 b 830.05 b 421.55 a 276.79 c 40.86 a 15.50 c 18.71 b 148.97 a 567.62 b 870.00 b 1536.71 c 7293.80
1982 1999.00 1354.50 1112.50 662.00 183.50 123.50 2.50 30.00 204.00 555.50 1110.50 1279.50 8617.00
1983 1408.00 1090.50 1010.50 705.00 338.50 76.50 5.00 0.00 189.00 529.00 983.00 1994.00 8329.00
1984 1539.00 1077.00 1256.00 599.00 312.50 35.50 10.00 10.00 295.50 498.50 926.50 1538.00 8097.50
1985 1700.00 1369.50 913.50 433.00 135.50 121.50 2.00 49.00 266.00 568.50 1355.00 1783.00 8696.50
1986 1441.50 1437.50 971.00 551.50 212.50 29.50 0.00 53.00 192.00 0.00 z 851.00 j 1281.00 6169.50
1987 1388.50 952.00 981.00 421.50 163.50 43.50 13.00 88.00 188.00 732.50 879.00 1322.50 7173.00
1988 1894.50 1610.50 1032.50 665.50 140.50 12.00 10.50 40.00 214.00 727.00 1034.00 1435.00 8816.00
1989 1421.00 1700.50 1284.50 623.50 320.50 112.00 2.00 21.50 259.50 584.00 1142.00 1771.00 9242.00
1990 1274.50 1273.50 996.00 669.00 368.50 76.00 38.00 37.50 175.50 670.50 939.50 1634.00 8152.50
1991 1716.00 1109.00 1030.50 563.50 260.50 24.50 30.00 18.50 254.00 679.00 1264.50 1329.00 8279.00
1992 1387.00 1115.50 975.00 794.00 270.00 123.00 123.50 133.00 272.50 625.50 1155.00 1613.00 8587.00
1993 1783.50 1558.50 1296.00 752.00 349.50 172.50 31.00 49.50 392.00 677.00 1185.50 1521.50 9768.50
1994 2033.50 1685.50 1076.50 665.00 247.00 57.00 38.50 84.50 194.50 555.50 962.00 1389.00 8988.50
1995 1596.00 978.50 j 1114.00 837.50 406.50 87.50 28.00 13.00 315.50 0.00 z 1224.00 1478.50 7100.50
1996 1880.50 1071.00 j 1380.00 801.50 450.00 78.50 33.50 17.00 284.50 616.50 1390.00 1803.50 8735.50
1997 1924.50 1403.50 1294.50 801.00 453.50 16.50 36.00 42.50 173.50 549.50 1181.50 1305.00 9181.50
1998 1590.50 1046.50 1239.00 604.00 170.50 144.00 8.50 3.00 114.50 519.50 383.00 p 902.00 i 5440.00
1999 1721.02 a 1081.00 994.00 601.00 283.43 c 66.43 b 5.00 11.00 265.00 598.00 712.50 d 1283.50 7621.87
2000 1495.75 e 1118.00 815.76 d 662.50 245.00 106.00 34.50 26.00 217.00 500.59 d 1216.00 849.00 q 6437.10
2001 1568.08 a 1627.00 1346.84 c 688.39 b 250.00 70.86 a 4.50 0.00 z 207.50 635.50 733.97 a 1355.50 8488.14
2002 1451.00 1124.50 1456.00 701.50 454.00 34.00 7.50 30.50 192.00 0.00 z 1052.50 1335.50 7839.00
2003 1566.50 1514.00 1160.00 574.50 343.50 84.50 7.00 20.50 305.00 539.00 1149.50 1391.50 8655.50
2004 1709.00 1402.50 955.00 618.50 379.50 136.00 37.00 127.00 160.50 583.00 904.00 1360.00 8372.00
2005 1705.00 1188.00 1120.50 549.00 364.50 40.00 20.00 38.50 154.00 582.00 976.50 1553.50 8291.50
2006 1289.00 1355.50 1091.50 541.50 317.50 63.50 10.50 24.00 345.00 720.00 1050.00 1292.50 8100.50
2007 1578.00 1610.00 1026.50 759.00 234.50 62.50 18.50 45.50 229.00 525.50 1062.50 1679.00 8830.50
2008 1836.00 1621.50 1286.50 836.00 417.50 136.00 9.50 29.50 172.00 j 739.50 1133.00 1887.50 9932.50
2009 1908.57 a 1453.00 1258.00 759.50 394.45 b 186.50 84.98 b 100.50 173.50 895.00 961.00 1732.38 a 9907.38
2010 1837.50 1193.50 g 822.00 h 476.50 352.50 52.00 3.00 17.50 258.00 552.00 1026.50 1674.00 6249.50
2011 1865.50 1491.50 1356.50 742.50 358.05 a 100.00 0.00 11.48 d 225.00 498.00 26.50 z 0.00 z 6648.53
Period of Record Statistics
MEAN 1669.76 1372.15 1122.99 632.12 306.84 85.24 20.31 39.11 214.50 561.84 1041.47 1484.75 8513.41
S.D. 214.25 199.29 174.10 120.19 96.35 47.53 21.09 29.00 68.65 116.73 147.10 176.81 571.11
SKEW -0.08 0.14 0.00 -0.11 -0.02 0.57 2.08 0.93 0.76 0.27 0.50 0.40 -0.01
MAX 2071.50 2092.00 1556.00 914.00 585.00 216.50 123.50 133.00 479.44 934.00 1576.15 1994.00 9907.38
MIN 1223.00 917.28 630.00 365.50 57.00 12.00 0.00 0.00 84.64 260.92 712.50 1141.00 6962.00
NO YRS 110 106 110 110 106 111 107 108 106 105 106 109 86