MADISON SEWAGE PLT, MINNESOTA

Monthly Total Heating Degree Days

(214994)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1940 0.00 z 0.00 z 0.00 z 0.00 z 216.50 23.00 7.00 53.50 102.00 292.00 1158.50 1310.50 3163.00
1941 1519.00 1364.00 1078.50 455.00 125.50 75.00 11.00 19.50 154.50 472.00 926.50 1245.00 7445.50
1942 1373.00 1265.50 936.50 452.00 374.00 96.00 15.00 20.50 308.00 535.50 976.50 1614.00 7966.50
1943 0.00 z 0.00 z 0.00 z 0.00 z 57.50 t 61.00 2.00 0.00 z 201.50 468.00 1011.00 1240.00 2983.50
1944 1137.00 1312.50 1258.00 688.50 198.00 42.50 3.50 26.50 128.50 405.00 871.00 1373.00 7444.00
1945 1520.00 1267.50 776.00 668.00 375.50 145.50 20.50 12.50 236.50 491.50 1056.00 1676.50 8246.00
1946 1590.00 1373.50 793.00 401.50 330.00 81.00 0.00 37.50 193.50 519.50 1023.00 1398.00 7740.50
1947 1294.00 1423.50 1126.50 675.00 367.50 88.50 10.00 5.00 193.50 271.00 1151.00 1482.00 8087.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.00 87.50 442.00 936.50 1431.50 2912.50
1949 1701.00 1453.50 1089.50 508.00 149.00 21.00 2.00 17.50 205.50 440.00 788.50 1444.50 7820.00
1950 1918.50 1311.00 1221.00 859.50 356.00 41.00 8.00 50.00 96.50 401.97 a 1104.50 1598.50 8966.47
1951 1748.00 1247.50 1452.00 704.00 143.50 106.50 10.50 28.50 247.50 549.00 1139.50 1595.00 8971.50
1952 1653.00 1249.50 1325.50 521.00 240.00 26.50 2.00 16.00 129.23 d 594.50 915.00 1340.50 8012.73
1953 1526.50 1268.50 1039.00 714.00 269.00 49.00 6.00 3.50 143.00 293.50 809.50 1401.72 a 7523.22
1954 1808.50 915.50 1160.50 571.50 378.00 49.00 0.00 5.00 164.50 553.00 783.50 1282.50 7671.50
1955 1527.00 1479.50 1201.50 353.50 108.00 54.50 0.00 5.50 186.00 443.00 1251.00 1715.00 8324.50
1956 1710.50 1507.00 1226.50 744.50 236.50 13.50 5.00 25.00 204.50 277.50 993.75 b 1248.50 8192.75
1957 1742.50 1248.50 1066.00 589.50 284.50 37.00 0.00 20.50 192.00 524.42 a 946.00 1208.50 7859.42
1958 1333.50 1417.50 1068.50 540.50 142.50 118.00 19.00 16.50 112.00 402.50 917.50 1533.50 7621.50
1959 1713.50 1424.00 947.50 580.50 253.00 37.00 4.00 1.00 181.50 670.12 a 1209.31 a 1083.50 8104.93
1960 1570.00 1424.00 1443.00 599.00 229.00 35.50 6.00 10.00 167.50 427.50 869.46 b 1446.50 8227.46
1961 1515.50 1116.00 901.50 715.86 a 319.50 27.00 2.50 3.50 230.00 447.00 979.00 1591.00 7848.36
1962 1701.00 1425.00 1216.23 a 667.50 177.00 54.00 12.92 a 0.50 192.50 389.50 766.55 a 1330.00 7932.70
1963 1800.50 1327.00 889.50 492.00 258.50 24.50 2.00 14.50 87.50 191.00 810.50 1625.50 7523.00
1964 1339.50 1154.00 1280.50 513.00 150.00 54.00 0.00 67.50 215.50 453.00 847.50 b 0.00 z 6074.50
1965 1762.19 b 1434.50 1448.00 623.50 170.00 16.50 5.50 37.00 380.50 362.00 948.00 1162.50 8350.19
1966 1933.00 1408.00 895.00 732.50 333.00 45.50 0.00 60.00 189.50 470.50 1075.50 1434.50 8577.00
1967 1516.42 a 1511.50 958.00 562.00 377.50 37.50 33.00 40.00 143.00 547.84 b 921.00 1350.50 7998.26
1968 1540.00 1505.00 723.00 504.50 327.50 53.50 16.50 32.00 161.00 471.00 899.00 1543.00 7776.00
1969 1854.00 1319.00 1389.00 435.00 j 209.50 155.00 3.00 3.10 a 144.00 613.50 909.50 1418.00 8017.60
1970 1879.00 1358.00 1235.00 635.50 218.00 27.00 5.50 10.00 183.00 534.00 1029.50 1498.50 8613.00
1971 1772.00 1320.50 1040.50 552.00 302.50 22.50 36.00 33.00 186.50 441.00 1000.00 1538.00 8244.50
1972 1722.10 b 1557.50 1111.50 665.50 220.00 53.50 23.00 44.00 199.00 575.50 994.50 1665.50 8831.60
1973 1475.00 1172.50 795.00 599.00 244.00 17.00 3.50 2.00 187.00 308.50 915.50 1511.00 7230.00
1974 1696.00 1302.50 1131.50 531.00 318.00 41.50 0.50 48.50 151.50 j 423.50 960.00 1300.00 7753.00
1975 1579.00 1453.00 1268.50 810.00 208.00 68.00 8.00 8.50 232.50 415.50 924.50 1417.00 8392.50
1976 1629.50 1086.50 1005.50 408.50 204.50 12.50 0.00 a 2.50 159.00 669.50 1104.00 1605.05 b 7887.05
1977 1990.00 1121.08 b 919.50 364.50 53.50 18.89 c 0.50 21.50 108.00 509.50 1008.62 a 999.00 j 6115.59
1978 1899.00 1532.00 1129.50 625.50 183.00 47.50 3.50 5.50 112.50 422.50 1020.00 1523.00 8503.50
1979 1977.00 1668.00 1231.00 746.00 362.50 48.00 8.00 0.00 z 0.00 z 582.91 c 1058.50 1181.50 8863.41
1980 1522.00 1426.50 1193.00 0.00 z 195.00 31.00 8.00 25.50 174.00 547.00 837.00 1407.00 7366.00
1981 1426.50 1157.50 808.00 417.50 241.59 b 28.50 12.50 12.50 143.00 516.84 b 778.50 1553.50 7096.43
1982 2019.50 1384.50 1090.50 623.00 138.50 96.50 1.00 37.50 176.50 489.00 1084.00 1224.00 8364.50
1983 1408.00 1096.00 1026.50 669.50 318.00 65.00 2.00 0.00 173.50 516.50 960.00 1966.00 8201.00
1984 1536.50 1080.50 1265.00 529.50 251.50 15.50 2.50 10.50 257.00 437.50 891.50 1490.00 7767.50
1985 1694.00 1369.00 899.50 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 3962.50
1986 1436.00 1411.50 0.00 z 511.50 193.00 12.00 0.00 0.00 z 180.00 484.00 1100.00 1185.50 6513.50
1987 1300.00 897.50 890.00 318.00 91.50 4.00 2.50 36.00 0.00 z 0.00 z 0.00 z 1239.00 4778.50
1988 1646.00 1446.50 942.00 467.50 57.00 0.00 e 0.00 a 13.00 0.00 z 0.00 z 928.00 1281.00 6781.00
1989 1281.00 1506.30 a 1174.50 536.00 159.00 32.07 a 0.00 0.00 135.00 412.50 1034.00 1604.50 7874.87
1990 1091.50 1103.50 901.00 543.00 236.00 19.50 0.00 8.50 110.50 472.00 811.00 1471.50 6768.00
1991 1528.00 992.50 965.00 453.00 202.00 4.50 5.50 6.50 178.50 516.00 1172.00 1275.00 7298.50
1992 1267.50 1044.50 873.50 664.00 168.00 77.00 49.50 81.50 164.50 515.00 1086.00 1530.00 7521.00
1993 1695.50 1458.00 1131.50 633.50 229.00 83.00 3.50 22.50 260.50 526.50 1079.50 1424.50 8547.50
1994 1995.50 1574.50 939.00 541.50 159.00 15.50 4.50 37.50 110.50 397.00 831.50 1260.50 7866.50
1995 1466.50 1224.50 1004.50 727.00 250.50 11.50 2.50 2.00 162.50 504.00 1105.00 1404.50 7865.00
1996 1774.00 1312.00 1205.00 666.00 290.50 18.50 0.00 0.00 z 0.00 z 410.50 0.00 z 1630.00 7306.50
1997 1766.50 1239.50 1144.50 640.00 272.00 0.00 10.00 36.00 94.00 427.00 1113.00 1165.00 7907.50
1998 1518.00 988.00 1167.50 463.50 81.50 80.00 1.00 2.00 62.50 423.50 912.00 1223.00 6922.50
1999 1668.50 1020.50 934.50 512.00 184.00 50.50 2.50 7.50 220.50 537.00 731.00 1266.00 7134.50
2000 1663.50 1146.50 832.50 664.50 222.00 103.00 28.00 24.50 220.50 491.00 1159.00 1944.00 8499.00
2001 1565.50 1699.50 1368.00 661.00 218.50 72.50 6.50 19.50 206.00 599.50 679.50 1362.50 8458.50
2002 1403.50 1111.00 1502.00 0.00 z 392.50 31.50 0.00 z 0.00 z 172.50 862.00 1025.50 1269.50 7770.00
2003 1572.50 1486.00 1101.50 535.00 299.50 46.50 0.00 8.00 0.00 z 517.00 0.00 z 1331.50 6897.50
2004 1710.50 1349.00 908.30 a 505.50 328.00 0.00 z 22.50 108.50 114.50 505.50 849.50 1300.50 7702.30
2005 1654.50 1152.50 0.00 z 450.00 0.00 z 9.50 12.00 31.50 86.00 494.00 912.50 1478.00 6280.50
2006 1225.00 1389.50 1068.50 449.00 233.00 25.50 3.00 7.50 246.00 618.00 942.50 1189.50 7397.00
2007 1450.00 1506.00 945.50 673.50 124.50 16.50 4.50 29.50 174.00 410.00 937.50 1568.50 7840.00
2008 1685.50 1499.00 1199.50 713.00 293.00 44.00 4.00 5.50 150.00 524.50 937.50 1731.50 8787.00
2009 1813.50 1344.50 1144.00 645.00 260.50 105.00 28.00 42.50 83.00 718.50 742.00 1603.50 8530.00
2010 1738.00 1527.50 939.00 369.50 269.00 19.50 0.00 12.50 202.00 435.50 970.00 1651.00 8133.50
2011 1839.00 1449.54 b 1341.50 632.00 278.50 50.00 c 0.00 4.50 188.50 432.50 920.00 1208.00 8344.04
2012 1322.00 1159.00 682.50 468.00 161.50 24.50 0.00 32.00 204.00 635.50 929.00 1494.50 7112.50
2013 1583.50 1466.00 1418.77 a 40.50 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 4468.27
Period of Record Statistics
MEAN 1608.93 1320.32 1083.82 576.60 234.94 45.96 7.31 22.20 172.67 481.09 963.30 1429.95 7966.74
S.D. 209.89 177.86 192.24 116.75 83.05 33.69 9.79 20.79 56.32 107.05 123.34 182.38 516.98
SKEW -0.21 -0.38 0.16 -0.05 -0.03 1.14 2.14 1.64 0.68 0.36 0.05 0.53 -0.18
MAX 2019.50 1699.50 1502.00 859.50 392.50 155.00 49.50 108.50 380.50 862.00 1251.00 1966.00 8971.50
MIN 1091.50 897.50 682.50 318.00 53.50 0.00 0.00 0.00 62.50 191.00 679.50 1083.50 6768.00
NO YRS 71 71 69 66 69 70 70 67 66 70 69 70 55