HURON RGNL AP, SOUTH DAKOTA

Monthly Total Heating Degree Days

(394127)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 251.10 a 63.50 1.00 19.50 79.00 500.50 949.00 1429.00 3292.60
1949 1777.50 1491.00 1075.70 a 489.00 172.00 23.50 3.00 12.50 214.50 501.50 731.50 1409.00 7900.70
1950 1931.50 1367.00 1267.00 814.50 355.50 64.50 17.00 43.00 156.50 415.50 1125.00 1513.00 9070.00
1951 1669.00 1173.50 1419.50 687.50 220.50 139.00 20.00 28.50 267.00 585.50 1106.00 1674.00 8990.00
1952 1725.00 1236.50 1325.50 498.50 247.00 13.50 5.00 9.00 120.50 608.00 941.50 1288.00 8018.00
1953 1436.50 1228.50 1017.50 736.00 305.00 43.00 6.72 a 3.00 136.50 319.00 833.50 1399.50 7464.72
1954 1774.50 823.50 1164.00 554.50 385.95 a 60.50 1.50 0.00 117.00 566.50 772.00 1330.42 a 7550.37
1955 1457.00 1494.00 1134.50 317.50 120.00 64.14 a 0.00 3.50 174.50 455.00 1276.00 1731.50 8227.64
1956 1734.50 1621.00 1192.00 763.00 238.50 10.50 1.50 20.50 191.50 353.00 975.50 1235.50 8337.00
1957 1767.50 1247.50 1052.50 619.00 309.00 45.50 0.00 19.12 a 195.00 506.00 961.00 1124.00 7846.12
1958 1303.50 1383.50 1119.00 571.00 168.00 119.50 15.50 19.50 119.00 431.50 904.50 1506.00 7660.50
1959 1739.00 1532.00 897.50 549.50 263.50 22.76 a 3.50 0.00 190.00 666.50 1210.00 1102.00 8176.26
1960 1638.50 1551.00 1551.50 587.50 267.50 59.00 5.50 2.00 226.00 511.50 988.00 1531.00 8919.00
1961 1728.00 1276.50 890.00 765.00 348.00 56.00 0.50 2.50 280.00 460.00 976.50 1596.00 8379.00
1962 1676.50 1485.00 1373.50 608.00 181.00 63.00 22.50 14.50 231.50 450.50 843.50 1355.00 8304.50
1963 1858.00 1258.00 788.00 515.50 263.50 13.00 0.00 18.50 59.50 211.00 859.00 1662.00 7506.00
1964 1369.00 1124.50 1215.00 469.50 197.50 55.00 1.00 58.50 183.50 470.50 1072.50 1702.50 7919.00
1965 1847.50 1419.00 1360.50 584.00 234.00 42.50 0.50 29.50 438.50 442.00 979.00 1137.00 8514.00
1966 1877.00 1400.00 901.50 712.00 314.00 55.50 0.00 64.50 213.00 545.00 1091.50 1369.00 8543.00
1967 1411.00 1408.00 891.50 562.50 400.50 42.00 40.00 26.50 123.00 525.00 936.50 1368.50 7735.00
1968 1539.00 1325.50 819.00 585.00 400.50 59.50 14.50 36.50 196.00 517.50 934.50 1519.00 7946.50
1969 1772.50 1245.00 1375.50 480.50 285.00 168.00 0.50 7.50 121.50 692.00 906.50 1345.00 8399.50
1970 1816.00 1192.00 1167.50 642.50 231.50 42.50 8.00 2.50 186.00 528.50 961.00 1547.50 8325.50
1971 1778.50 1381.00 1132.50 587.50 334.50 17.50 34.50 8.50 217.00 484.00 952.50 1494.00 8422.00
1972 1718.50 1511.00 1039.50 606.00 216.00 59.50 28.50 40.50 178.50 629.00 1006.50 1536.50 8570.00
1973 1431.00 1150.50 783.50 586.50 277.50 34.50 5.50 0.00 233.00 388.00 1003.00 1503.50 7396.50
1974 1609.50 1137.50 954.00 514.00 354.50 77.00 1.50 38.00 224.00 421.00 960.50 1300.00 7591.50
1975 1497.50 1381.50 1245.00 761.00 202.50 70.00 4.50 3.50 243.50 453.50 972.50 1352.50 8187.50
1976 1566.00 1064.50 1052.50 508.50 313.00 42.50 6.50 4.00 178.50 713.00 1188.50 1517.50 8155.00
1977 1851.00 1109.00 963.50 379.50 65.50 13.50 0.00 29.00 135.00 514.00 1010.50 1537.00 7607.50
1978 2006.50 1623.00 1107.00 630.50 254.00 91.00 13.00 28.50 136.50 544.50 1078.50 1565.00 9078.00
1979 2006.00 1648.50 1137.50 677.50 381.00 38.50 0.00 34.50 126.00 582.50 1003.00 1125.00 8760.00
1980 1492.00 1350.50 1094.50 495.00 200.00 30.50 1.00 20.50 163.50 583.00 842.00 1332.00 7604.50
1981 1330.00 1103.50 889.50 381.50 250.00 13.50 5.00 1.00 110.00 488.00 760.50 1462.00 6794.50
1982 1906.50 1290.50 985.50 617.00 181.00 90.00 0.00 20.50 171.50 495.50 1008.50 1200.00 7966.50
1983 1222.00 978.00 931.00 679.00 336.00 86.50 2.00 0.00 170.00 481.50 931.00 1929.00 7746.00
1984 1433.50 985.00 1108.00 537.00 299.00 37.50 4.50 7.50 281.50 497.50 890.00 1454.00 7535.00
1985 1605.50 1255.50 862.50 410.00 145.50 124.50 8.00 49.00 271.00 558.50 1390.00 1750.50 8430.50
1986 1418.00 1411.00 861.00 591.50 251.00 24.50 0.00 57.00 198.00 503.50 1099.00 1183.00 7597.50
1987 1244.00 887.50 896.00 361.50 101.50 21.00 7.00 57.00 123.00 642.50 837.00 1257.50 6435.50
1988 1746.50 1453.00 931.50 565.50 122.50 1.50 3.50 27.00 155.50 612.00 952.00 1333.00 7903.50
1989 1293.00 1605.50 1189.50 537.00 268.50 86.50 0.00 12.00 187.00 500.00 1029.00 1675.50 8383.50
1990 1140.00 1144.00 857.00 617.00 264.50 40.50 7.00 9.50 127.00 550.50 862.50 1568.50 7188.00
1991 1618.50 988.00 905.00 485.00 205.50 0.50 5.00 0.00 194.00 588.50 1140.00 1201.00 7331.00
1992 1199.00 1022.50 861.50 624.00 222.50 67.00 46.50 83.00 182.50 551.50 1025.50 1469.00 7354.50
1993 1567.50 1424.50 1045.00 610.00 251.50 90.00 4.00 26.50 279.50 600.00 1063.00 1378.50 8340.00
1994 1883.00 1526.50 896.00 576.00 181.50 27.50 14.50 39.50 138.50 436.50 878.50 1393.50 7991.50
1995 1517.50 1177.00 1013.00 736.50 314.00 52.00 9.50 3.50 216.00 597.00 1098.00 1337.00 8071.00
1996 1744.00 1268.50 1240.00 658.00 344.00 42.00 8.00 0.00 205.50 541.50 1272.93 a 1713.00 9037.43
1997 1753.00 1305.50 1091.00 701.50 328.00 8.00 19.50 14.50 103.00 455.00 1078.50 1128.00 7985.50
1998 1451.00 920.00 1163.00 485.00 140.50 91.50 0.50 0.00 73.00 429.00 866.50 1221.00 6841.00
1999 1561.50 925.50 873.50 528.00 216.00 48.50 3.50 3.50 210.00 526.50 691.07 b 1187.82 a 6775.39
2000 1416.50 993.50 761.50 554.50 183.50 64.00 14.50 9.00 152.00 398.00 1237.76 a 1791.50 7576.26
2001 1469.50 1600.00 1293.50 567.00 177.00 50.50 6.00 7.50 142.50 511.00 707.07 a 1322.00 7853.57
2002 1271.00 972.50 1323.50 560.00 380.50 28.00 0.00 24.00 143.50 783.00 953.00 1192.50 7631.50
2003 1450.00 1353.00 1017.50 524.00 289.50 77.50 0.00 18.50 197.50 438.00 1089.00 1203.00 7657.50
2004 1574.00 1264.00 823.50 510.00 267.50 98.00 22.50 59.50 116.50 478.00 827.50 1211.50 7252.50
2005 1558.50 1059.00 948.50 467.50 292.50 15.50 4.50 10.50 64.00 472.00 872.00 1490.00 7254.50
2006 1055.00 1177.50 947.50 416.00 243.00 21.00 0.00 2.50 248.50 634.50 950.50 1172.00 6868.00
2007 1501.00 1480.50 826.50 641.00 133.00 27.00 0.00 5.50 159.00 434.00 925.00 1506.00 7638.50
2008 1579.50 1372.50 1056.50 652.50 311.50 39.50 8.00 3.50 138.50 531.50 945.00 1610.00 8248.50
2009 1638.50 1232.50 1054.00 627.50 243.50 114.00 23.00 40.00 81.50 734.00 738.50 1603.00 8130.00
2010 1666.00 1450.50 865.00 376.00 285.50 19.00 0.00 2.00 153.50 420.00 948.50 1507.00 7693.00
2011 1738.00 1414.50 1199.50 608.50 276.00 48.50 0.00 0.00 203.00 420.50 914.00 1179.00 8001.50
2012 1274.50 1139.00 536.50 424.50 167.00 22.00 0.00 23.00 156.00 589.50 940.00 1395.50 6667.50
2013 1502.50 1267.50 1250.33 a 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 4020.33
Period of Record Statistics
MEAN 1586.67 1278.27 1046.32 570.12 252.78 51.97 7.53 19.46 175.50 514.98 973.43 1417.88 7895.08
S.D. 218.04 203.78 191.44 106.82 76.65 34.35 10.13 19.38 63.20 97.94 139.11 190.97 601.69
SKEW -0.24 -0.19 0.23 -0.08 -0.12 1.01 1.94 1.14 1.04 0.09 0.49 0.30 -0.15
MAX 2006.50 1648.50 1551.50 814.50 400.50 168.00 46.50 83.00 438.50 783.00 1390.00 1929.00 9078.00
MIN 1055.00 823.50 536.50 317.50 65.50 0.50 0.00 0.00 59.50 211.00 691.07 1102.00 6435.50
NO YRS 65 65 65 64 65 65 65 65 65 65 65 65 64