SIOUX FALLS FOSS FLD, SOUTH DAKOTA

Monthly Total Heating Degree Days

(397667)

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 1610.00 1399.50 1128.00 408.50 255.00 51.50 3.50 16.00 77.00 482.00 974.00 1423.50 7828.50
1949 1694.00 1441.00 1078.00 520.00 153.00 22.00 4.50 14.00 234.00 476.50 752.50 1349.50 7739.00
1950 1834.50 1266.00 1238.50 815.50 338.00 84.50 24.50 46.00 118.00 383.00 1082.50 1485.00 8716.00
1951 1610.50 1141.50 1386.00 706.03 a 201.00 126.00 25.50 20.50 255.00 a 553.00 1124.00 1580.50 8729.54
1952 1631.00 1168.80 a 1224.00 492.00 256.50 13.50 6.50 4.00 128.00 606.00 934.00 1314.40 a 7778.70
1953 1453.00 1195.50 998.00 734.50 281.00 43.97 a 6.50 5.00 159.00 327.00 802.00 1379.50 7384.97
1954 1701.50 885.00 1159.00 506.00 391.50 53.00 0.00 1.00 121.00 556.00 753.00 1305.50 7432.50
1955 1425.00 1458.00 1104.00 315.00 116.50 77.50 0.00 3.50 168.00 425.00 1221.00 1643.00 7956.50
1956 1667.50 1492.50 1160.50 724.50 227.00 12.00 1.50 28.00 169.50 291.00 966.50 1250.00 7990.50
1957 1730.50 1165.00 1044.00 596.50 297.00 39.50 0.00 15.50 196.50 517.00 952.50 1106.00 7660.00
1958 1276.00 1347.00 1045.00 561.00 154.00 101.00 8.00 18.00 108.50 400.50 907.50 1468.50 7395.00
1959 1651.00 1436.00 926.50 546.00 243.50 29.00 3.50 0.00 197.50 629.50 1200.00 1108.00 7970.50
1960 1579.50 1475.50 1468.00 583.50 237.50 40.50 4.50 3.00 178.00 446.50 873.00 1365.50 8255.00
1961 1574.00 1161.00 911.50 695.50 328.50 46.00 0.00 5.50 238.50 429.50 950.00 1518.50 7858.50
1962 1620.50 1339.00 1252.50 600.00 120.00 43.00 18.50 6.50 137.50 k 397.50 792.00 1313.50 7503.00
1963 1809.50 1266.50 809.00 472.50 207.50 7.50 0.00 24.50 94.00 230.00 773.50 1606.50 7301.00
1964 1304.50 1107.00 1189.50 517.00 180.00 49.00 0.00 57.00 216.00 507.00 971.00 1534.50 7632.50
1965 1643.50 1456.00 1344.50 575.50 200.50 45.00 2.00 39.50 413.50 417.00 968.00 1135.00 8240.00
1966 1857.00 1334.50 846.50 716.00 349.50 51.50 0.00 43.50 195.50 517.00 1021.00 1415.00 8347.00
1967 1470.00 1393.00 866.00 570.00 405.00 40.00 37.00 35.00 145.50 556.50 970.50 1336.50 7825.00
1968 1494.50 1336.00 785.00 517.50 388.00 56.00 15.00 15.00 159.50 495.50 946.50 1515.50 7724.00
1969 1743.50 1290.00 1380.50 498.00 222.50 148.00 2.50 2.50 121.50 675.50 949.50 1410.50 8444.50
1970 1869.50 1278.00 1197.00 610.50 211.50 47.50 17.00 3.50 199.00 583.50 991.50 1531.00 8539.50
1971 1757.00 1293.00 1048.50 518.00 302.50 17.50 30.00 13.00 181.50 416.00 952.00 1477.00 8006.00
1972 1738.00 1554.00 1039.50 635.50 240.50 51.50 30.50 46.00 198.50 639.50 993.00 1559.00 8725.50
1973 1443.00 1172.50 784.00 559.00 265.50 21.00 1.00 0.00 184.00 384.00 909.50 1486.50 7210.00
1974 1619.50 1139.50 946.50 486.00 311.50 88.50 2.50 40.50 246.00 427.50 935.50 1284.50 7528.00
1975 1485.00 1359.00 1224.50 707.50 163.50 54.00 4.00 6.00 276.00 414.00 946.00 1384.50 8024.00
1976 1533.00 1029.50 938.00 422.00 269.50 24.50 1.00 0.50 145.00 650.00 1122.00 1500.00 7635.00
1977 1870.50 1103.00 901.00 347.50 41.50 5.00 0.00 23.00 132.00 537.50 1010.50 1510.00 7481.50
1978 1956.50 1579.50 1069.50 622.00 256.00 82.50 12.00 19.00 109.00 533.50 1012.00 1563.00 8814.50
1979 1959.00 1609.00 1142.00 629.50 328.00 43.50 0.00 31.00 106.00 522.00 1044.50 1175.00 8589.50
1980 1455.00 1359.50 1033.00 469.00 249.00 34.00 1.00 15.00 161.50 608.50 848.50 1360.00 7594.00
1981 1325.50 1093.50 824.00 359.00 234.00 6.50 6.50 7.50 119.50 504.50 764.50 1457.00 6702.00
1982 1899.00 1255.00 998.50 637.50 180.00 111.00 0.00 29.00 196.00 502.50 1042.50 1257.00 8108.00
1983 1393.00 1088.00 990.50 707.00 323.50 70.00 1.00 0.00 163.00 480.50 902.50 1950.00 8069.00
1984 1477.50 1080.00 1254.50 575.50 292.00 24.00 2.50 12.50 270.50 456.50 865.50 1382.00 7693.00
1985 1601.00 1264.00 844.00 384.50 127.00 106.00 6.50 48.50 274.50 570.00 1331.00 1722.00 8279.00
1986 1372.50 1346.00 872.50 505.50 211.50 19.00 0.00 57.00 184.50 509.50 1091.00 1233.50 7402.50
1987 1272.50 902.00 842.50 394.00 100.50 24.50 5.50 56.50 116.00 656.00 806.50 1260.50 6437.00
1988 1718.50 1451.00 887.00 560.00 88.50 1.50 0.00 22.50 132.00 634.50 925.00 1329.50 7750.00
1989 1225.50 1563.00 1092.00 522.00 242.00 64.50 0.50 6.00 198.00 489.50 1064.50 1659.50 8127.00
1990 1140.00 1124.50 878.50 590.00 276.50 41.00 13.00 8.00 112.00 534.00 883.00 1542.50 7143.00
1991 1592.00 984.50 870.00 460.50 195.00 8.00 6.50 3.00 186.00 590.50 1179.00 1209.00 7284.00
1992 1194.50 1016.00 877.00 643.50 192.50 39.00 38.50 66.50 164.50 509.00 1038.50 1422.00 7201.50
1993 1582.50 1400.00 1117.50 627.00 249.50 78.00 2.00 20.00 263.00 564.50 1053.50 1338.00 8295.50
1994 1824.00 1448.50 881.00 569.00 144.00 8.00 5.50 17.00 103.00 394.00 855.00 1341.00 7590.00
1995 1467.00 1162.50 937.50 696.50 290.00 55.50 3.00 0.50 203.00 529.50 1075.50 1281.00 7701.50
1996 1677.00 1230.50 1165.50 680.50 340.00 45.50 9.50 5.50 232.00 540.50 1245.00 1698.50 8870.00
1997 1748.00 1319.00 1067.00 733.50 421.00 9.50 20.50 27.50 136.00 504.50 1113.50 1207.00 8307.00
1998 1410.00 930.00 1146.50 555.00 153.00 122.50 5.50 2.50 80.50 446.50 887.00 1272.00 7011.00
1999 1582.00 984.50 969.00 579.00 215.00 74.50 0.50 6.00 204.50 514.00 720.54 b 1236.50 7086.04
2000 1470.95 a 1004.50 795.00 572.50 211.50 83.50 25.32 a 9.00 170.00 431.93 a 1200.50 1778.50 7753.20
2001 1432.20 a 1509.50 1189.50 521.50 210.00 47.00 7.00 8.00 168.50 525.45 a 644.50 1244.13 a 7507.28
2002 1247.00 993.50 1290.00 548.00 373.50 29.00 2.00 18.50 153.50 746.00 962.50 1190.50 7554.00
2003 1470.00 1292.50 993.00 522.50 299.00 66.00 1.00 12.50 209.00 450.00 993.00 1223.00 7531.50
2004 1554.00 1296.50 822.50 489.50 257.00 74.00 20.00 70.50 88.00 470.00 827.00 1219.50 7188.50
2005 1519.00 1020.50 979.50 391.50 289.50 3.00 8.00 16.00 68.50 469.50 846.50 1460.50 7072.00
2006 1051.00 1170.00 983.00 402.00 224.50 27.00 1.00 4.00 229.00 600.00 920.00 1142.50 6754.00
2007 1442.50 1439.00 805.50 605.00 137.00 26.00 0.50 1.50 143.50 382.00 898.50 1472.50 7353.50
2008 1590.00 1455.50 1109.00 650.50 281.00 6.00 2.00 2.00 127.50 0.00 z 913.00 1542.00 7678.50
2009 1573.00 1157.00 978.50 599.50 231.00 90.00 13.50 37.00 92.50 700.00 712.50 1548.00 7732.50
2010 1688.00 1410.00 854.00 386.50 305.50 18.00 0.00 1.50 157.00 426.50 933.00 1507.50 7687.50
2011 1695.50 1349.50 1090.00 633.50 285.50 48.50 0.00 1.00 206.00 402.00 862.50 1182.00 7756.00
2012 1273.00 1115.00 485.50 413.00 158.00 22.00 0.00 19.50 150.50 579.50 875.00 1346.00 6437.00
2013 1473.50 1218.00 1166.12 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 3857.62
Period of Record Statistics
MEAN 1561.34 1259.16 1026.12 556.81 242.01 47.66 7.23 18.43 170.85 502.31 955.10 1400.77 7741.92
S.D. 200.88 180.07 179.01 109.21 80.36 33.17 9.72 18.22 60.57 97.80 136.70 172.83 555.68
SKEW -0.21 -0.13 0.05 -0.09 -0.02 0.85 1.66 1.15 1.03 -0.03 0.34 0.55 -0.05
MAX 1959.00 1609.00 1468.00 815.50 421.00 148.00 38.50 70.50 413.50 746.00 1331.00 1950.00 8870.00
MIN 1051.00 885.00 485.50 315.00 41.50 1.50 0.00 0.00 68.50 230.00 644.50 1106.00 6437.00
NO YRS 66 66 66 65 65 65 65 65 64 64 65 65 63