BROOKINGS 2 NE, SOUTH DAKOTA

Monthly Total Heating Degree Days

(391076)

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 1628.53 a 1365.50 0.00 z 0.00 z 398.50 28.50 2.00 49.08 a 190.50 570.50 1054.00 1579.00 6866.12
1894 1768.55 a 1436.50 953.50 650.00 290.00 38.00 13.50 44.00 260.00 682.50 1142.50 1221.00 8500.05
1895 1878.50 1523.50 1106.50 351.50 285.00 72.00 25.50 33.50 199.66 a 639.00 1064.00 1397.50 8576.16
1896 1511.50 1168.00 1343.50 584.50 204.00 76.50 23.00 95.21 c 300.50 j 808.07 a 1431.50 1331.00 8576.78
1897 1807.00 1420.00 1342.30 a 628.50 296.00 160.50 12.73 c 100.50 90.50 470.17 a 1118.28 a 1545.50 8991.97
1898 1355.50 1263.00 1005.00 581.50 337.00 57.00 13.50 18.50 191.90 a 726.00 1165.00 1553.50 8267.40
1899 1556.72 a 1680.50 1525.00 639.00 314.50 50.00 23.00 30.00 289.50 519.00 771.00 1501.00 8899.22
1900 1428.07 a 1597.50 1208.00 444.00 205.12 a 69.00 25.00 3.00 23.50 q 354.50 1178.00 1349.00 7861.18
1901 1495.50 1434.50 1103.50 548.00 278.50 91.55 a 0.00 9.00 254.50 502.50 1044.00 1544.50 8306.05
1902 1481.50 1370.50 979.50 686.50 235.50 179.50 14.50 62.00 329.00 541.50 961.50 1689.50 a 8531.00
1903 1585.00 1521.00 1065.50 595.50 265.57 a 117.00 44.00 80.00 288.10 a 504.00 1101.00 1627.50 8794.17
1904 1797.50 1677.50 1106.50 726.50 315.00 116.50 50.00 90.50 201.50 491.50 856.50 1465.50 8895.00
1905 1839.50 1578.37 a 884.00 681.00 430.50 91.00 45.98 a 4.50 110.50 675.00 898.00 1312.50 8550.85
1906 1371.50 1278.50 1358.00 510.00 317.00 122.00 45.00 36.00 145.00 569.00 1064.00 1390.50 8206.50
1907 1865.00 1285.00 958.00 867.93 a 535.00 98.00 7.50 34.50 237.00 549.50 932.50 1299.50 8669.43
1908 1399.00 1388.00 1088.00 518.50 322.50 100.00 23.00 51.00 109.50 552.50 876.50 1358.50 7787.00
1909 1622.50 1317.50 1108.00 802.00 314.50 70.50 27.38 a 12.50 184.00 596.00 936.50 1686.06 d 8677.44
1910 532.00 u 1598.33 d 586.50 454.00 379.00 115.00 8.50 45.50 179.00 382.50 1063.50 1434.00 6245.83
1911 1714.50 1292.00 845.50 648.00 191.50 16.50 34.00 71.00 169.50 639.50 1307.59 a 1373.00 8302.59
1912 2030.50 1399.00 1313.00 534.00 276.00 164.50 25.50 30.50 327.50 508.92 a 854.50 1284.50 8748.42
1913 1537.00 1427.50 1218.09 b 560.50 363.00 42.00 13.43 a 3.50 227.07 a 0.00 z 785.50 1189.50 7367.09
1914 1406.50 1589.00 1105.00 626.90 a 256.55 b 26.50 3.50 72.00 141.50 396.80 a 881.00 1699.00 8204.25
1915 1625.50 1147.00 1220.88 a 333.50 416.50 148.00 74.50 83.50 206.25 b 440.00 872.00 1378.50 7946.13
1916 1894.50 1586.00 1107.00 650.00 321.00 144.50 0.00 47.50 214.00 598.50 982.50 1690.00 9235.50
1917 1714.50 1589.00 1161.00 709.00 424.70 a 136.50 23.50 67.00 208.45 a 818.50 740.50 1759.00 9351.65
1918 1878.00 1296.30 a 777.00 693.50 212.50 54.50 19.50 15.50 a 313.97 a 434.00 875.00 1222.50 7792.26
1919 1266.00 1347.63 a 1058.00 610.50 293.00 76.50 0.00 20.50 130.34 a 700.00 1167.50 1606.50 8276.47
1920 1625.50 1325.50 1050.50 829.50 272.50 93.50 5.00 43.50 137.50 348.50 1025.69 a 1383.00 8140.19
1921 1321.50 1074.50 895.00 504.00 280.50 30.00 7.00 33.58 a 145.00 458.80 a 1175.50 1326.50 7251.88
1922 1593.50 1607.00 1073.78 b 550.00 195.00 15.50 31.00 13.50 115.00 442.50 852.50 1511.50 8000.78
1923 1410.00 1454.00 1248.00 622.24 a 256.00 57.50 1.00 48.71 c 134.44 c 604.00 817.50 1139.00 7792.40
1924 1716.88 a 1239.50 1165.00 587.59 a 475.00 113.50 28.50 35.50 237.00 307.93 a 965.50 1722.00 8593.90
1925 1684.00 1205.00 878.00 347.50 360.50 88.00 35.50 3.00 o 102.00 898.50 953.00 1458.50 8010.50
1926 1530.00 1096.50 1121.50 604.66 a 132.50 120.50 10.85 a 7.75 a 242.00 536.50 1151.50 1535.00 8089.26
1927 1470.00 1159.00 940.50 577.50 b 364.50 126.50 14.47 a 75.50 218.50 391.00 1111.00 1833.00 8281.47
1928 1492.50 1232.50 940.50 769.00 176.70 a 112.00 7.00 29.00 219.00 536.00 925.50 1183.00 7622.70
1929 1934.92 a 1618.00 940.00 575.50 358.00 87.00 2.00 13.00 291.00 504.50 1118.50 1441.50 8883.92
1930 1872.50 964.00 1010.50 475.00 279.00 65.50 11.88 a 4.65 a 173.00 590.50 897.00 1276.00 7619.53
1931 1178.50 904.00 1005.50 517.76 a 333.50 29.50 7.50 22.50 91.00 396.50 858.00 1205.50 6549.76
1932 1538.63 a 1302.00 1303.00 537.50 203.00 7.50 12.50 12.40 a 153.50 602.00 1056.00 1524.50 8252.53
1933 1244.50 1424.89 a 1019.00 585.00 291.00 16.03 a 0.00 a 14.50 68.50 556.00 959.00 1443.00 7621.42
1934 1350.50 1197.50 1067.50 556.00 75.00 14.00 4.00 55.50 258.00 354.50 837.50 1482.32 a 7252.32
1935 1645.00 1039.00 903.50 688.00 397.50 111.50 0.00 63.00 135.00 573.00 1153.00 1437.00 8145.50
1936 2011.50 2041.50 1065.00 719.50 142.50 62.00 0.00 5.00 109.00 588.00 1070.50 1374.50 9189.00
1937 1987.50 1449.50 1141.00 686.00 194.00 95.00 1.50 1.50 165.50 578.00 1047.00 1558.00 8904.50
1938 1661.00 1356.00 916.00 531.50 308.00 49.00 0.00 2.50 96.00 269.00 1054.00 1329.50 7572.50
1939 1375.00 1565.00 1047.00 608.50 98.00 34.50 0.00 14.00 156.96 b 519.77 a 834.00 1086.00 7338.73
1940 1871.50 1378.02 a 1201.50 652.00 277.00 41.00 7.50 27.50 114.50 300.50 1159.00 1309.50 8339.52
1941 1518.00 1396.00 1116.50 473.00 135.50 81.50 24.00 19.50 150.00 476.50 892.00 1181.00 7463.50
1942 1384.50 1225.50 939.50 419.50 362.50 79.50 16.00 22.22 a 298.00 524.50 950.50 1547.00 7769.22
1943 1828.00 1198.50 1223.50 533.50 370.00 82.50 3.50 13.50 245.00 492.50 1024.50 1263.00 8278.00
1944 1171.50 1310.50 1256.00 710.50 193.00 61.50 7.50 45.50 147.00 464.00 929.00 1367.50 7663.50
1945 1499.50 1199.50 797.50 662.00 404.00 175.00 25.50 18.50 261.00 488.00 1038.00 1688.00 8256.50
1946 1533.00 1293.00 766.00 400.86 a 353.00 96.50 4.00 52.00 192.50 514.50 1031.00 1330.50 7566.86
1947 1311.00 1423.00 1144.00 703.50 377.68 a 85.00 16.50 1.00 181.50 287.00 1156.50 1501.50 8188.18
1948 1654.00 1479.50 1108.50 410.00 279.50 53.50 4.50 27.00 97.22 c 486.50 952.50 1408.95 a 7961.67
1949 1676.00 1411.50 1072.50 526.00 161.00 25.86 a 5.00 13.50 224.50 463.40 b 755.50 1390.00 7724.76
1950 1866.50 1284.00 1229.00 842.59 a 375.00 72.50 27.50 79.00 116.38 a 367.00 1067.50 1510.00 8836.96
1951 1679.50 1156.50 1356.77 a 746.00 203.00 143.50 35.00 47.53 a 354.00 605.57 b 1124.50 1611.50 9063.37
1952 1666.50 1253.50 1295.00 544.50 283.00 30.50 17.00 28.00 186.00 674.00 1019.00 1399.00 8396.00
1953 1586.50 1278.31 b 1098.00 781.50 311.00 56.50 12.50 4.00 207.50 368.50 880.00 1455.93 b 8040.24
1954 1775.50 924.00 1207.40 b 567.93 a 440.50 72.50 0.50 10.00 186.00 630.50 824.50 1343.00 7982.33
1955 1533.50 1502.50 1157.00 360.00 a 159.50 115.00 0.00 b 15.00 199.14 a 499.21 b 1267.00 1713.02 b 8520.86
1956 1694.00 1573.50 1203.83 a 752.50 253.50 16.50 16.50 42.50 236.00 322.00 1029.50 1283.00 8423.33
1957 1802.50 1288.00 a 1118.07 a 654.00 344.50 91.50 0.00 39.50 253.00 559.50 973.50 1199.00 8323.07
1958 1352.12 a 1388.00 1110.00 592.24 a 187.50 159.00 24.50 33.00 156.43 b 433.00 958.00 1557.00 7950.79
1959 1731.50 1493.00 953.50 583.00 266.00 53.50 13.50 1.00 197.14 b 700.00 1256.00 1198.84 b 8446.99
1960 1644.00 1482.00 1551.03 a 583.33 c 302.00 75.00 c 22.50 13.50 219.50 469.81 b 932.40 e 1480.50 8775.58
1961 1653.50 1245.00 932.00 745.00 370.00 71.50 8.50 12.00 280.71 b 502.50 1034.00 1605.00 8459.71
1962 1691.00 1398.88 c 1266.41 d 671.50 192.50 73.27 d 33.00 25.50 261.50 457.00 833.00 1350.00 8253.56
1963 1871.00 1339.00 885.50 500.00 281.50 25.50 1.50 36.00 126.00 278.00 880.00 1671.93 a 7895.93
1964 1371.00 1183.50 1262.45 b 559.00 224.50 67.50 4.50 83.00 273.62 a 590.00 1033.50 1705.00 8357.57
1965 1869.50 1579.50 1502.39 c 696.00 259.00 56.00 15.50 58.50 453.50 490.50 1063.50 1244.00 9287.89
1966 1943.00 1492.00 901.21 c 781.00 406.00 87.50 1.00 78.00 228.00 594.50 1132.50 1528.50 9173.21
1967 1551.50 1588.50 1041.08 a 658.00 474.50 78.50 66.00 68.00 218.00 630.50 1059.50 1423.50 8857.58
1968 1664.00 1468.50 908.50 628.00 431.50 92.50 38.50 67.50 249.50 584.50 1001.50 1558.27 a 8692.77
1969 1847.82 c 1409.15 b 1538.50 640.50 293.50 208.50 16.00 20.50 183.50 712.00 1004.50 1426.00 9300.47
1970 1972.00 1389.00 1263.50 702.00 289.00 70.00 24.00 31.50 273.62 a 631.00 1093.00 1607.00 9345.62
1971 1838.50 1415.00 1159.50 602.00 380.50 36.00 63.50 56.00 276.00 505.50 1039.00 1579.50 8951.00
1972 1858.00 1642.00 1166.50 764.50 273.00 78.50 46.00 80.00 266.50 699.50 1056.00 1645.00 9575.50
1973 1540.50 1258.50 872.50 675.50 371.00 66.50 16.50 6.50 260.50 433.00 995.00 1592.00 8088.00
1974 1785.00 1359.00 1090.50 614.00 416.95 a 126.21 a 5.17 a 70.00 333.62 a 556.00 1012.50 1400.50 8769.44
1975 1573.85 e 1512.00 1401.31 d 837.50 235.50 108.00 20.50 22.73 a 331.50 514.00 980.77 d 1520.00 9057.66
1976 1687.00 1139.50 1101.50 511.00 339.00 52.50 7.75 a 22.73 a 251.50 753.30 a 1179.50 1617.00 8662.28
1977 2012.50 1215.00 1029.20 a 464.48 a 72.69 b 36.00 11.00 95.00 205.50 643.50 1108.33 c 1605.28 a 8498.49
1978 2058.00 1676.50 1238.50 684.50 302.77 a 108.62 a 26.00 38.00 169.00 615.50 1094.50 1636.00 9647.89
1979 2084.00 1775.00 1291.15 a 766.50 457.00 95.00 11.50 78.00 166.00 634.50 1072.00 1243.00 9673.65
1980 1572.22 a 1476.50 1222.43 a 581.90 a 286.50 60.00 16.00 38.00 198.00 655.00 883.45 a 1424.50 8414.50
1981 1450.00 1182.00 914.00 479.48 a 368.90 a 56.50 24.00 38.00 196.11 c 608.50 866.50 1571.50 7755.49
1982 2010.50 1429.00 1127.50 734.50 231.50 155.50 8.00 54.50 237.50 567.00 1139.50 1287.50 8982.50
1983 1470.00 1160.50 1072.50 777.00 395.00 121.00 1.50 0.00 243.50 580.50 989.50 2045.50 8856.50
1984 1623.00 1122.50 1330.00 652.00 383.00 56.00 18.00 27.00 351.50 548.00 985.50 1514.50 8611.00
1985 1801.50 1447.50 935.00 505.50 200.00 169.00 17.00 101.50 292.50 635.00 1374.50 1819.00 9298.00
1986 1491.50 1478.00 984.50 578.00 285.50 53.00 9.50 96.00 244.00 564.50 1183.00 1289.50 8257.00
1987 1393.00 968.50 994.50 469.50 176.00 42.50 15.00 94.00 204.50 729.50 867.50 1331.50 7286.00
1988 1890.50 1602.00 1011.50 661.50 157.00 13.50 7.50 50.50 213.00 739.00 1019.50 1413.00 8778.50
1989 1387.00 1678.00 1237.50 640.00 331.50 127.50 5.00 34.00 262.00 587.50 1120.00 1749.50 9159.50
1990 1268.00 1259.00 990.00 676.00 372.50 78.50 44.00 37.00 185.50 656.50 950.00 1626.00 8143.00
1991 1700.00 1105.50 992.50 541.50 260.50 21.00 26.50 24.00 253.00 669.00 1283.50 1322.50 8199.50
1992 1312.50 1127.00 949.00 775.00 243.35 a 105.00 111.50 117.50 251.50 602.00 1142.00 1555.50 8291.85
1993 1720.50 1549.50 1276.50 739.00 332.00 140.50 12.50 30.50 365.50 670.50 1142.00 1486.00 9465.00
1994 1980.50 1635.50 1022.50 663.50 240.00 39.50 38.00 73.00 180.50 517.00 932.50 1414.00 8736.50
1995 1601.00 1297.00 1095.00 826.00 399.00 86.00 26.50 16.00 271.50 631.00 1201.00 1426.50 8876.50
1996 1831.00 1403.50 1297.00 755.00 424.00 63.50 21.50 19.50 274.00 586.00 1341.00 1752.50 9768.50
1997 1870.00 1384.50 1231.00 773.50 439.00 23.00 35.50 52.00 165.50 529.00 1163.50 1266.50 8933.00
1998 1536.50 1001.00 1213.00 588.50 155.50 131.50 7.50 1.50 123.00 520.00 954.00 1290.00 7522.00
1999 1709.50 1077.00 1037.00 612.00 242.50 86.50 12.00 16.00 261.00 620.00 760.50 1294.00 7728.00
2000 1553.00 1114.00 829.00 653.50 242.00 98.00 33.50 23.00 226.00 495.00 1206.00 1838.00 8311.00
2001 1527.00 1618.50 1323.00 624.50 238.50 82.50 8.50 0.00 z 206.00 616.50 682.00 1326.50 8253.50
2002 1420.50 1078.50 1467.00 663.50 432.50 41.50 11.50 40.00 199.00 808.50 1029.50 1291.00 8483.00
2003 1567.50 1460.00 1141.50 573.50 348.00 93.50 7.00 20.50 0.00 z 536.50 1144.00 1316.50 8208.50
2004 1666.50 1412.00 928.00 579.50 357.50 131.00 36.00 120.00 139.50 548.50 894.50 1326.00 8139.00
2005 1652.50 1144.00 1096.50 496.50 339.50 18.00 12.50 34.00 112.00 528.00 916.00 1536.00 7885.50
2006 1206.50 1302.50 1052.00 497.50 277.50 40.00 6.50 15.50 306.50 676.50 983.50 1244.50 7609.00
2007 1494.50 1554.00 956.00 725.00 174.00 43.00 11.50 27.50 209.50 462.00 988.50 1602.00 8247.50
2008 1746.50 1554.50 1213.50 763.00 362.50 55.00 8.50 14.00 184.50 582.00 986.00 1723.00 9193.00
2009 1796.00 1323.00 1135.00 690.00 312.00 128.50 39.50 58.50 114.00 791.50 771.50 1615.00 8774.50
2010 1754.00 1495.50 948.00 416.00 332.50 43.00 0.50 6.00 210.00 477.00 982.00 1617.00 8281.50
2011 1799.00 1479.00 1254.98 a 687.00 332.22 a 80.50 0.00 19.00 254.00 471.00 948.50 1234.50 8559.70
2012 1381.00 1208.00 668.00 495.50 198.50 43.00 0.00 60.97 a 229.66 a 680.00 962.50 1453.00 7380.12
2013 1581.52 a 1374.00 376.00 u 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 2955.52
Period of Record Statistics
MEAN 1637.64 1366.59 1100.51 616.81 297.08 79.36 17.58 38.71 210.61 550.97 1013.94 1461.96 8402.30
S.D. 212.07 194.50 176.99 115.55 91.17 42.39 17.40 28.73 69.30 120.81 139.57 176.63 608.46
SKEW -0.04 0.08 0.11 -0.20 -0.11 0.54 2.07 0.78 0.38 0.01 0.28 0.37 -0.10
MAX 2084.00 2041.50 1551.03 867.93 535.00 208.50 111.50 120.00 453.50 898.50 1431.50 2045.50 9768.50
MIN 1171.50 904.00 586.50 333.50 72.69 7.50 0.00 0.00 68.50 269.00 682.00 1086.00 6549.76
NO YRS 120 121 119 119 120 120 120 118 117 119 120 120 112