FORESTBURG 4 NNE, SOUTH DAKOTA

Monthly Total Heating Degree Days

(393029)

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
1893 1785.00 1516.00 1268.00 705.00 325.00 23.00 2.00 43.00 174.00 569.00 1071.00 1539.00 9020.00
1894 1833.00 1498.00 911.00 501.50 212.00 24.00 0.00 6.00 201.00 525.00 1012.00 1198.00 7921.50
1895 1815.00 1420.50 1060.00 291.00 230.00 70.00 8.00 19.00 187.00 635.00 1091.79 b 1339.00 8166.29
1896 1478.00 1189.00 1277.00 490.00 144.00 46.00 7.00 21.00 224.00 621.00 1472.00 1317.00 8286.00
1897 1721.50 0.00 z 1355.00 566.00 215.97 a 128.00 3.00 39.27 a 65.00 455.00 1091.50 1493.00 7133.23
1898 1313.00 1213.00 1057.00 579.64 b 328.60 a 48.00 4.00 20.00 179.00 781.20 a 1210.50 1543.00 8276.94
1899 1608.00 1682.00 1474.00 630.00 292.43 a 105.00 32.00 6.00 245.00 505.00 722.00 1466.00 8767.43
1900 1337.00 1478.50 1154.50 458.00 158.00 47.00 6.00 0.00 184.00 311.50 1080.00 1248.00 7462.50
1901 1401.00 1439.41 a 1002.50 474.00 181.00 43.00 0.00 2.00 229.00 380.00 970.00 1502.50 7624.41
1902 1425.50 1385.50 939.62 b 600.00 160.50 128.00 9.00 24.00 212.00 481.00 928.00 1696.00 7989.12
1903 1632.00 1589.00 1051.50 547.00 212.50 66.00 13.00 32.50 220.00 392.00 1038.00 1593.00 8386.50
1904 1770.50 1680.50 1065.50 707.00 221.00 71.00 21.00 30.00 143.00 389.00 822.00 1416.00 8336.50
1905 1811.43 a 1553.50 832.50 591.50 326.50 65.00 12.00 0.00 a 66.00 637.05 a 860.00 1304.50 8059.98
1906 1437.50 1231.00 1408.00 473.00 257.50 90.00 30.50 31.00 146.50 558.50 1039.50 1416.50 8119.50
1907 1901.50 1277.00 922.00 825.00 514.50 119.00 6.00 41.00 276.00 533.00 949.00 1255.00 8619.00
1908 1318.00 1305.50 1006.00 464.00 0.00 z 90.00 9.00 40.00 88.50 502.00 841.00 1356.50 7020.50
1909 1584.50 1289.50 1089.50 728.00 250.00 54.83 a 7.00 6.00 110.50 520.50 981.72 a 1712.00 8334.05
1910 1619.50 1575.00 541.47 a 411.00 332.22 a 83.00 0.00 a 28.62 e 149.00 318.00 995.00 1435.82 a 7488.62
1911 917.00 p 1321.00 798.00 552.00 175.00 3.00 12.00 38.50 140.00 575.00 1184.50 1354.50 6153.50
1912 1949.00 1351.00 1271.00 455.50 165.00 109.50 14.50 14.50 306.00 432.45 a 663.50 f 1228.00 7296.45
1913 1446.00 1405.50 1181.00 487.00 285.00 13.50 1.50 0.50 179.00 606.50 849.00 1315.50 7770.00
1914 1406.00 1601.00 1106.38 b 599.00 276.50 10.00 0.00 32.00 128.50 382.00 780.00 1632.50 7953.88
1915 1582.50 1112.00 1353.50 300.00 a 356.50 96.50 38.50 68.72 a 152.50 384.00 793.00 1325.50 7563.22
1916 1983.50 1578.00 1029.50 636.00 303.00 120.50 0.00 28.00 197.50 614.00 999.00 1663.50 9152.50
1917 1702.00 1629.50 1141.50 688.50 398.50 111.00 15.50 18.50 151.00 747.50 760.86 a 1702.50 9066.86
1918 1849.00 1325.33 a 765.00 668.50 211.00 64.00 3.00 w 7.00 289.00 454.00 908.00 1222.00 7762.83
1919 1235.00 1361.50 1078.50 642.50 235.50 76.50 0.00 13.50 123.50 685.50 1229.50 1615.00 8296.50
1920 1501.50 1256.32 a 1042.00 842.00 253.50 71.00 4.50 31.00 128.50 317.00 1011.50 1353.50 7812.32
1921 1258.50 1016.00 814.00 457.50 249.00 24.00 5.50 30.00 135.50 453.50 1078.00 1305.00 6826.50
1922 1544.00 1615.00 1058.00 511.50 204.00 39.50 22.00 8.50 87.41 a 443.50 815.50 1497.50 7846.41
1923 1311.50 1363.50 1075.00 578.79 a 219.50 56.50 2.00 27.50 115.50 495.00 778.00 1142.00 7164.79
1924 1712.50 1219.00 1085.50 513.50 347.50 109.50 17.00 17.50 167.50 299.00 849.50 1673.00 8011.00
1925 1662.00 1189.00 837.50 316.00 368.50 15.50 11.50 2.50 114.00 772.50 959.00 1426.50 7674.50
1926 1500.00 1028.22 a 988.00 539.00 121.93 a 80.17 a 3.50 4.00 208.45 a 443.50 1081.00 1452.00 7449.78
1927 1440.50 1104.96 a 914.00 556.50 312.50 99.50 10.50 37.00 198.50 380.50 1099.50 1889.50 8043.46
1928 1453.00 1159.00 872.13 a 730.00 164.50 92.50 1.50 19.50 201.50 499.00 926.00 1182.00 7300.63
1929 1933.00 1596.00 883.00 600.00 319.50 59.50 0.00 b 6.50 259.00 462.00 1071.50 1385.00 8575.00
1930 1884.00 914.00 998.00 430.00 312.00 55.50 6.00 0.00 137.50 563.00 882.50 1217.00 7399.50
1931 1175.42 a 901.50 998.00 469.00 321.00 17.00 5.50 6.00 86.00 371.00 916.03 a 1291.50 6557.95
1932 1648.00 1331.00 1209.00 a 459.00 158.00 1.50 8.27 a 0.00 132.50 567.50 928.45 a 1473.53 a 7916.75
1933 1159.00 1316.00 930.00 519.50 252.50 6.50 0.00 5.00 51.72 a 490.00 845.50 1359.50 6935.22
1934 1244.00 1096.50 958.00 492.50 46.00 5.50 0.00 29.50 225.50 316.00 772.50 1337.00 6523.00
1935 1510.00 944.50 874.00 696.50 461.00 165.00 0.00 57.50 107.00 527.00 1068.50 1373.50 7784.50
1936 1940.50 2043.50 984.50 680.00 119.00 51.00 0.00 1.50 101.50 545.50 1002.00 1311.50 8780.50
1937 1996.50 1406.50 1064.00 650.00 169.50 102.50 6.50 0.00 160.34 a 542.00 999.50 1455.00 8552.34
1938 1555.68 a 1294.50 826.00 497.00 280.00 38.79 a 0.00 0.00 77.50 265.50 1020.50 1242.00 7097.48
1939 1242.50 1499.04 a 956.50 573.50 83.00 41.50 0.00 5.50 118.50 472.50 797.50 1068.00 6858.04
1940 1855.50 1301.00 1151.50 587.00 264.50 37.50 1.50 18.50 85.34 a 288.50 1075.50 1224.00 7890.34
1941 1462.50 1307.00 1038.50 457.00 107.98 a 65.50 9.50 8.00 149.50 469.50 852.50 1131.50 7058.98
1942 1305.50 1215.00 951.50 388.50 351.00 56.00 9.50 10.50 288.00 485.00 902.00 1426.50 7389.00
1943 1751.50 1104.00 1173.50 470.00 338.42 a 86.00 0.00 14.98 a 178.45 a 431.00 957.50 1233.00 7738.35
1944 1205.00 1359.50 1231.00 673.50 157.00 82.50 9.30 a 41.00 146.50 418.00 915.50 1335.50 7574.30
1945 1404.50 1137.50 807.00 644.00 412.00 185.50 37.50 13.00 218.28 a 454.15 a 1013.50 1611.50 7938.43
1946 1448.00 1198.00 767.00 351.21 a 354.00 97.50 3.00 48.00 192.50 558.00 1031.00 1292.00 7340.21
1947 1284.50 1300.00 1108.50 683.00 359.00 93.50 12.00 2.50 179.00 289.00 1158.50 1463.50 7933.00
1948 1598.50 1427.00 1116.50 406.00 275.00 70.50 3.62 a 17.50 90.00 497.00 960.00 1407.00 7868.62
1949 1697.00 1415.50 864.50 f 465.00 154.50 35.50 4.50 11.37 a 217.00 459.50 706.55 a 1367.00 6533.42
1950 1856.00 1284.50 1225.50 763.50 349.50 71.50 18.50 40.00 160.00 420.00 1049.48 a 1437.62 c 8676.11
1951 1568.50 1098.50 1361.00 687.00 211.50 132.00 24.00 25.00 252.00 533.50 1074.50 1627.00 8594.50
1952 1675.50 1186.50 1253.50 484.00 217.00 7.76 a 1.50 0.00 108.50 577.12 a 912.50 1262.00 7685.88
1953 1368.50 1173.00 985.50 706.50 290.00 44.48 a 7.00 3.50 122.00 298.50 812.00 1366.00 7176.98
1954 1715.50 784.00 1130.50 495.00 382.00 66.50 0.50 0.00 114.50 560.50 735.50 1311.00 7295.50
1955 1401.72 a 1422.50 1070.00 297.93 a 96.50 74.00 0.00 3.00 143.50 402.50 1202.00 1674.50 7788.15
1956 1688.00 1514.73 a 1147.00 725.00 212.00 13.00 1.00 24.00 172.50 297.50 948.50 1180.00 7923.23
1957 1691.50 1164.00 1023.00 586.50 297.00 47.00 0.00 14.50 181.00 486.00 933.10 a 1083.50 7507.10
1958 1225.00 1353.33 a 1101.53 a 546.50 159.50 112.00 9.50 14.00 98.50 396.50 860.36 b 1415.50 7292.22
1959 1647.50 1449.00 872.50 551.90 a 229.00 20.50 4.00 0.00 a 178.50 634.00 1164.50 1079.50 7830.90
1960 1554.50 1451.04 a 1470.43 a 559.00 223.72 a 54.50 1.00 1.66 c 178.00 434.50 893.50 1445.00 8266.85
1961 1604.50 1164.00 863.50 690.00 326.00 44.00 1.50 1.00 252.00 409.50 933.50 1521.00 7810.50
1962 1541.22 a 1334.50 1290.00 553.50 141.00 63.00 23.00 6.50 187.00 390.50 777.50 1283.50 7591.22
1963 1768.00 1169.26 a 783.00 500.00 230.50 12.50 0.00 17.50 72.50 207.50 823.00 1610.50 7194.26
1964 1313.00 1092.50 1188.50 482.00 155.00 37.00 0.00 56.50 173.00 436.50 965.50 1564.00 7463.50
1965 1661.00 1325.00 1330.50 540.00 170.00 20.50 0.50 20.50 378.50 353.00 911.00 1104.50 7815.00
1966 1812.00 1341.00 829.00 684.50 297.50 44.00 0.00 40.50 154.00 433.00 1016.50 1349.00 8001.00
1967 1385.50 1321.00 867.50 519.50 369.00 39.00 19.24 b 22.50 106.00 479.00 912.00 1319.00 7359.24
1968 1505.50 1289.00 749.50 530.50 367.50 46.50 12.00 18.50 143.50 456.50 902.50 1488.00 7509.50
1969 1760.50 1239.50 1343.00 455.50 198.00 130.50 1.00 4.00 79.00 650.50 871.50 1310.50 8043.50
1970 1802.50 1152.00 1127.00 587.00 182.00 32.50 5.50 2.00 163.00 520.00 965.50 1512.00 8051.00
1971 1711.50 1283.50 1051.50 480.00 272.50 12.50 26.00 5.50 168.00 402.50 900.00 1454.00 7767.50
1972 1717.50 1479.00 1003.50 583.00 231.50 47.00 20.00 27.50 154.00 565.50 969.50 1511.00 8309.00
1973 1424.50 1148.52 a 767.50 559.50 249.50 17.50 2.00 0.00 170.50 321.50 953.00 1463.00 7077.02
1974 1566.50 1114.50 914.00 470.50 292.00 67.00 0.00 34.50 189.00 389.50 903.50 1260.50 7201.50
1975 1437.00 1337.50 1195.50 695.00 171.00 52.00 4.00 0.50 194.50 391.50 918.00 1331.00 7727.50
1976 1487.00 957.00 923.00 390.50 222.00 10.00 1.00 0.00 127.00 607.00 1069.50 1406.50 7200.50
1977 1780.50 1027.50 902.00 336.50 45.50 7.50 0.00 a 19.00 136.00 513.00 1019.50 1489.00 7276.00
1978 2000.00 1593.50 1075.00 579.50 233.50 53.28 a 3.50 17.00 79.00 462.00 1018.50 1525.00 8639.78
1979 1960.50 1604.00 1078.00 601.50 325.50 45.00 2.00 27.00 77.00 502.00 1018.00 1121.50 8362.00
1980 1476.00 1358.00 1063.00 462.00 194.00 12.50 0.00 7.00 97.00 529.00 793.00 1317.00 7308.50
1981 1279.50 1087.00 797.50 318.50 242.50 3.50 9.50 0.50 87.50 479.00 757.00 1459.00 6521.00
1982 1920.50 1301.50 1020.50 622.00 159.50 82.50 0.00 28.00 181.00 490.50 1031.50 1209.50 8047.00
1983 1250.00 1007.50 961.50 684.50 290.00 71.00 2.00 0.00 152.00 451.00 924.50 1968.50 7762.50
1984 1487.00 1047.00 1182.00 554.00 280.50 30.00 3.50 8.50 280.00 496.00 874.00 1466.00 7708.50
1985 1597.50 1274.50 863.00 403.50 128.00 106.00 5.50 33.50 261.00 519.50 1341.00 1727.00 8260.00
1986 1413.50 1362.50 886.50 528.50 172.50 11.50 0.00 41.00 164.00 481.50 1067.50 1170.50 7299.50
1987 1288.00 883.50 873.00 353.00 84.50 11.00 0.00 48.00 110.50 604.00 806.50 1245.00 6307.00
1988 1758.50 1483.50 878.00 489.50 104.50 1.00 4.00 20.50 107.50 580.50 906.50 1281.00 7615.00
1989 1248.50 1545.50 1107.00 474.00 218.50 56.00 0.00 3.50 163.00 466.50 1000.00 1663.00 7945.50
1990 1181.50 1122.00 870.50 569.50 236.00 28.50 6.50 9.00 89.50 486.00 823.00 1526.50 6948.50
1991 1645.00 1050.50 903.00 455.50 199.50 3.00 1.50 0.00 157.50 531.50 1144.50 1267.00 7358.50
1992 1263.00 1085.50 877.50 619.50 199.00 37.50 37.00 66.50 150.50 496.50 1026.50 1436.00 7295.00
1993 1570.00 1395.50 1024.00 583.00 224.50 73.00 8.00 20.00 238.00 510.00 1053.00 1332.50 8031.50
1994 1833.50 1504.50 861.50 528.50 160.50 13.50 14.50 23.50 121.50 407.50 845.50 1353.00 7667.50
1995 1478.50 1122.50 977.50 690.50 283.50 52.00 5.00 5.50 193.50 555.50 1058.00 1319.00 7741.00
1996 1668.00 1221.00 1188.50 598.50 319.50 27.00 1.50 0.50 200.50 480.50 1244.00 1714.50 8664.00
1997 1738.50 1289.50 1031.50 651.00 298.50 2.50 8.50 15.00 94.00 433.00 1077.00 1133.00 7772.00
1998 1415.50 866.50 1129.00 501.00 129.00 93.50 0.00 0.00 46.50 424.50 861.50 1205.00 6672.00
1999 1508.00 897.50 863.00 494.00 184.00 52.00 1.00 1.50 199.50 500.00 676.50 1154.00 6531.00
2000 1384.50 940.00 710.50 504.00 147.77 a 61.50 13.00 5.50 128.00 371.50 1220.17 a 1740.50 7226.94
2001 1413.00 1522.00 1212.00 512.00 146.50 51.00 0.00 2.00 126.43 b 482.00 657.50 1288.05 a 7412.48
2002 1241.50 918.00 1299.50 485.00 315.00 19.50 0.00 20.00 124.50 709.50 915.00 1166.50 7214.00
2003 1416.50 1272.50 953.00 485.00 268.00 69.50 0.00 7.50 162.50 410.00 1022.50 1167.50 7234.50
2004 1524.00 1250.00 765.50 462.50 214.00 77.00 18.00 66.50 98.50 432.00 822.50 1178.50 6909.00
2005 1517.50 1012.50 900.50 398.50 249.50 7.00 6.00 5.50 45.50 452.50 826.00 967.50 h 5421.00
2006 1014.00 1126.50 909.00 353.00 200.00 16.50 0.00 2.00 231.50 591.50 944.00 1166.50 6554.50
2007 1482.00 1431.00 771.90 a 597.50 103.00 15.50 1.00 4.00 124.50 396.50 883.00 1468.50 7278.40
2008 1507.00 1343.00 1014.00 601.50 253.50 21.50 4.50 3.50 109.50 482.50 926.50 1583.58 a 7850.58
2009 1565.50 1168.50 991.00 574.00 197.50 73.50 15.00 30.50 65.00 686.50 717.00 1567.00 7651.00
2010 1628.50 1384.00 828.00 322.00 257.50 13.85 d 0.00 0.50 124.00 380.50 36.00 z 0.00 z 4938.85
2011 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 76.00 w 400.33 b 737.00 f 978.00 f 400.33
2012 1281.85 a 1147.05 a 552.32 a 413.08 d 176.38 b 29.00 f 0.00 f 24.28 a 86.50 i 623.21 b 922.00 1392.42 a 6532.58
2013 1463.95 b 1270.64 c 1025.00 f 0.00 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 2734.59
Period of Record Statistics
MEAN 1552.28 1282.45 1017.28 539.81 238.03 54.80 6.84 17.10 156.54 478.68 955.17 1393.05 7706.60
S.D. 219.56 209.99 180.53 114.57 86.33 38.08 8.74 16.58 60.71 106.81 138.97 179.14 591.35
SKEW 0.09 0.21 0.21 0.05 0.29 0.72 1.79 1.05 0.67 0.31 0.57 0.53 0.05
MAX 2000.00 2043.50 1474.00 842.00 514.50 185.50 38.50 68.72 378.50 781.20 1472.00 1968.50 9152.50
MIN 1014.00 784.00 541.47 291.00 45.50 1.00 0.00 0.00 45.50 207.50 657.50 1068.00 6307.00
NO YRS 119 119 118 119 118 118 117 119 118 120 117 117 110