LAKE PARK, IOWA

Monthly Total Heating Degree Days

(134561)

Base Temperature = 65 F

File last updated on Apr 6, 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
1912 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.50 a 251.50 453.50 815.00 1182.98 c 2718.48
1913 1466.09 b 1370.00 1133.05 a 552.32 b 311.00 59.50 2.58 a 7.00 171.96 b 596.00 735.00 1112.50 7517.01
1914 1279.50 1526.00 a 1029.00 576.50 198.50 16.50 0.00 a 23.52 b 109.50 279.00 b 765.52 a 1635.00 7438.53
1915 1543.59 b 1115.00 1145.45 a 290.50 352.50 91.00 34.50 68.50 137.00 366.50 815.69 a 1301.00 7261.23
1916 1713.55 b 1501.79 a 1028.50 624.50 226.00 96.50 0.00 a 18.27 c 174.83 a 532.00 921.00 1559.41 c 8396.34
1917 1670.26 b 1555.62 b 1134.08 a 627.00 305.87 a 82.24 a 17.80 d 16.53 a 156.50 760.00 754.00 1664.70 a 8744.59
1918 1801.62 a 1273.50 780.50 645.00 153.45 a 31.55 a 8.78 a 8.00 232.50 386.00 830.50 0.00 z 6151.40
1919 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 0.00 z 0.00 z 0.00 z 0.00
1920 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 0.00 z 0.00 z 0.00 z 0.00
1921 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 0.00 z 0.00 z 0.00 z 0.00
1922 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 0.00 z 0.00 z 0.00 z 0.00
1923 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 0.00 z 0.00 z 0.00 z 0.00
1924 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 0.00 z 0.00 z 0.00 z 0.00
1925 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 0.00 z 0.00 z 0.00 z 0.00
1926 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 0.00 z 0.00 z 0.00 z 0.00
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 127.00 10.50 48.16 c 231.92 d 378.50 1003.50 1751.50 b 3551.08
1928 1399.50 1204.50 950.00 787.50 144.50 111.50 2.00 6.50 h 192.69 d 345.50 i 900.00 1219.50 6911.69
1929 1898.00 1610.50 966.50 539.00 347.50 82.00 1.50 9.00 252.00 462.50 1130.00 1405.00 8703.50
1930 1868.00 973.00 996.00 501.50 266.00 55.00 10.50 0.00 z 155.00 560.00 853.00 1258.08 a 7496.08
1931 1194.50 906.00 1014.00 468.21 b 362.38 b 34.29 b 13.78 d 10.69 b 63.33 c 242.50 n 794.00 1119.00 5980.18
1932 1571.00 1302.41 a 1307.00 555.50 193.00 9.00 9.82 a 12.50 165.00 579.00 1068.10 a 1470.78 d 8243.11
1933 1214.34 b 1449.00 1071.50 592.00 266.00 6.21 a 0.00 16.02 a 62.59 a 536.50 950.00 1428.07 a 7592.22
1934 1357.59 b 1228.37 a 1051.50 566.50 88.35 a 13.50 6.00 62.50 254.00 333.50 814.66 a 1494.00 7270.46
1935 1597.50 1064.00 906.50 666.00 388.00 109.00 0.00 42.50 140.00 555.00 1106.50 1441.00 8016.00
1936 1951.00 2006.37 b 1033.50 701.00 115.00 67.50 0.00 0.00 102.93 a 544.50 984.50 1272.50 8778.80
1937 1859.50 1397.50 1114.00 629.00 197.00 86.50 3.00 0.50 158.50 562.00 1009.00 1479.00 8495.50
1938 1549.00 1269.50 836.00 532.00 320.33 a 40.00 0.00 2.00 105.50 259.00 977.50 1301.50 7192.33
1939 1294.50 1455.50 999.00 622.00 93.50 37.00 0.00 26.50 120.00 499.50 796.00 1058.50 7002.00
1940 1795.50 1295.50 1191.43 a 638.50 273.50 34.00 8.50 44.00 113.50 278.00 1100.50 1253.00 8025.93
1941 1420.00 1308.50 1081.50 445.00 113.50 65.50 13.00 16.00 135.00 405.00 847.00 1152.50 7002.50
1942 1395.00 1248.00 941.50 399.00 318.00 58.00 6.00 16.50 279.00 476.00 903.00 1506.50 7546.50
1943 1714.50 1175.50 1169.50 541.00 364.50 82.50 0.50 16.50 238.00 464.50 1035.00 1224.50 8026.50
1944 1110.50 1250.50 1213.00 700.50 168.50 62.50 4.00 46.00 137.50 411.50 843.50 1390.00 7338.00
1945 1449.50 1202.00 797.00 622.50 405.50 166.00 15.00 22.00 220.00 456.50 974.50 1591.00 7921.50
1946 1540.50 1226.50 711.00 413.00 353.50 88.00 4.50 58.00 201.50 446.00 972.00 1296.00 7310.50
1947 1333.50 1457.00 1154.50 712.00 373.00 125.50 9.00 2.00 187.50 259.00 1107.00 1423.00 8143.00
1948 0.00 z 0.00 z 0.00 z 434.00 270.00 51.00 1.00 24.59 b 75.00 g 456.50 921.00 1380.53 a 3538.62
1949 1622.00 1409.50 1070.50 543.50 175.50 16.50 3.10 a 11.92 e 245.00 c 363.39 d 740.00 1337.65 a 7538.56
1950 1771.00 1289.00 1202.00 849.64 b 312.00 59.50 0.00 z 58.00 n 139.50 362.50 1033.50 1523.50 8542.14
1951 1607.50 1181.00 1384.67 a 737.07 a 159.00 120.00 a 29.00 26.00 263.50 504.55 b 1134.50 1544.00 8690.79
1952 1590.00 1124.00 1205.00 528.00 272.00 23.50 13.00 30.00 143.50 611.00 867.00 1319.00 7726.00
1953 1494.00 1198.50 1015.00 730.50 268.00 52.50 f 0.00 z 7.48 b 154.50 292.50 794.50 1306.00 7260.98
1954 1632.50 861.00 1151.00 499.50 0.00 z 0.00 z 0.00 0.00 z 139.29 b 552.83 a 580.50 h 1284.00 6120.12
1955 1472.50 b 1454.96 a 1139.00 341.00 127.62 a 0.00 z 0.00 m 7.00 126.50 303.50 f 1164.00 1610.50 7443.08
1956 1626.00 1450.50 1155.50 680.50 222.00 12.00 5.00 23.00 149.00 250.50 976.73 d 1227.50 7778.23
1957 1669.00 1143.50 1061.23 a 555.50 260.00 42.50 0.00 a 17.50 191.00 526.50 956.50 1127.50 7550.73
1958 1294.50 1351.00 1036.50 532.00 133.50 89.50 6.50 21.00 92.00 363.50 863.50 1465.02 b 7248.52
1959 1653.00 1414.52 a 999.50 531.00 184.97 a 26.50 6.00 2.00 165.50 627.00 1199.00 1095.00 7903.99
1960 1523.50 1387.50 1442.00 545.00 205.00 35.50 2.50 1.00 169.50 432.00 831.00 1399.50 7974.00
1961 1563.50 1176.50 968.00 710.00 317.23 a 28.50 2.00 3.50 198.50 386.00 945.00 1512.50 7811.23
1962 1648.50 1326.50 1230.00 614.00 116.00 41.00 7.50 0.00 178.00 356.50 759.50 1312.50 7590.00
1963 1776.00 1290.00 835.50 430.00 204.00 7.00 0.00 13.50 58.50 178.00 742.50 1593.00 7128.00
1964 1269.50 1095.00 1144.50 517.50 125.00 29.00 0.00 52.50 194.50 466.00 853.50 1522.00 7269.00
1965 1592.88 a 1388.00 1378.00 610.50 142.00 9.50 4.00 34.00 338.00 399.00 929.50 1103.00 7928.38
1966 1792.00 1291.50 834.00 703.00 314.00 44.00 0.00 39.50 162.00 477.00 1015.00 1412.50 8084.50
1967 1491.62 a 1417.50 917.50 559.00 401.00 36.50 32.50 36.50 165.50 536.41 c 996.21 a 1346.00 7936.23
1968 1591.00 0.00 z 842.00 508.00 351.50 45.00 10.00 25.00 139.50 441.50 936.50 1494.50 6384.50
1969 1756.50 1269.00 1386.00 507.50 203.05 a 122.00 1.50 3.00 145.00 608.00 938.00 1407.00 8346.55
1970 1840.50 1308.00 1209.00 568.50 178.50 28.50 3.50 3.50 190.50 549.50 1022.00 1502.50 8404.50
1971 1772.50 1352.00 1152.50 412.50 h 301.39 d 25.96 d 30.50 28.33 b 227.40 e 424.70 a 921.96 b 1460.62 a 7697.86
1972 1733.86 b 1603.37 c 1126.33 a 0.00 z 194.04 d 58.45 a 32.11 c 68.09 c 224.50 665.47 a 989.00 0.00 z 6695.21
1973 1449.25 a 1231.50 825.50 600.00 336.00 32.50 2.50 7.00 206.00 369.00 927.50 1528.00 7514.75
1974 1675.00 1243.00 1038.50 558.50 341.50 77.00 0.00 37.50 229.00 512.00 939.00 1336.50 7987.50
1975 1551.00 1425.85 b 1351.50 804.00 195.50 68.00 7.50 2.50 261.00 461.00 881.00 1387.50 8396.35
1976 1581.00 1099.41 a 1035.50 416.00 278.50 27.50 1.50 15.00 198.00 680.00 1119.50 1576.00 8027.91
1977 1918.00 1160.00 905.50 386.50 66.00 6.50 2.00 34.50 g 111.50 571.00 981.50 1513.50 7622.00
1978 1908.50 1567.00 1140.00 644.50 246.50 59.00 11.00 17.50 93.00 516.50 1035.50 1579.00 8818.00
1979 2020.50 1701.00 1248.00 720.50 372.00 66.50 2.00 47.00 126.72 a 538.00 996.50 1209.50 9048.22
1980 1497.30 a 1450.00 1179.50 535.50 203.00 33.50 0.00 19.00 174.00 614.32 a 839.00 995.50 i 6545.12
1981 1404.82 a 1117.85 b 848.50 431.00 266.00 41.50 22.50 22.50 152.50 595.00 778.85 d 1471.50 7152.51
1982 1935.00 1396.50 1068.00 683.50 177.50 97.00 0.50 42.50 184.50 494.50 1061.00 1275.00 8415.50
1983 1436.50 1136.50 1078.00 760.00 370.50 69.00 0.00 0.50 183.50 515.50 952.24 a 1979.50 8481.74
1984 1561.00 1123.50 1315.50 624.00 310.00 14.50 0.50 15.00 264.00 469.00 955.00 1406.00 8058.00
1985 1707.50 1376.00 881.00 467.00 140.50 101.50 4.00 55.00 273.50 578.50 1269.50 1779.00 8633.00
1986 1430.00 1395.50 967.50 510.50 216.50 16.50 4.50 61.00 154.00 505.00 1133.00 1293.00 7687.00
1987 1363.00 931.50 924.00 429.50 121.50 21.00 6.00 62.50 131.50 673.00 821.50 1282.00 6767.00
1988 1792.00 1569.50 978.00 643.50 95.50 8.50 5.50 24.50 136.50 660.50 973.00 1439.00 8326.00
1989 1300.00 1562.00 1196.00 612.50 252.50 68.50 1.00 7.00 203.50 479.00 1101.00 1708.50 8491.50
1990 1208.00 1211.00 983.50 620.50 344.00 52.00 16.50 21.50 141.00 564.50 879.50 1550.00 7592.00
1991 1724.00 1122.00 1007.00 520.00 234.00 17.00 10.00 14.00 215.50 599.50 1259.50 1322.00 8044.50
1992 1302.00 1111.50 966.00 735.00 229.50 66.50 64.00 88.00 208.00 544.50 1073.00 1442.00 7830.00
1993 1658.00 1445.00 1247.50 711.00 296.50 97.50 5.00 26.00 308.50 593.00 1095.00 1417.00 8900.00
1994 1890.50 1557.50 976.00 605.00 214.00 14.00 9.50 23.00 114.00 424.00 870.50 1358.00 8056.00
1995 1546.50 1252.00 1052.50 763.00 338.00 62.00 11.50 10.50 234.50 563.00 1165.50 1362.50 8361.50
1996 1733.00 1330.50 1252.00 740.50 408.00 59.00 15.00 7.00 231.50 508.00 1257.50 1669.50 9211.50
1997 1758.00 1310.00 1097.50 737.00 426.00 1.00 22.50 37.50 119.50 470.00 1128.50 1204.50 8312.00
1998 1483.00 964.00 1167.00 494.50 86.00 95.50 0.00 1.50 67.50 426.00 842.50 1205.50 6833.00
1999 1697.50 1056.50 972.00 540.50 197.00 61.50 0.50 7.00 189.00 517.50 668.50 1247.00 7154.50
2000 1523.50 1096.50 777.50 576.00 174.50 66.00 19.50 9.00 191.50 445.50 1121.00 1812.00 7812.50
2001 1458.50 1512.00 1224.00 532.50 224.00 67.00 2.50 9.50 175.00 521.50 592.50 1162.00 7481.00
2002 1317.00 1158.00 1316.00 608.00 364.00 30.00 3.50 46.50 167.00 729.50 1015.00 1254.00 8008.50
2003 1532.50 1419.00 1100.00 577.00 320.00 70.00 2.00 12.00 210.50 466.00 1027.50 1305.00 8041.50
2004 1615.00 1405.00 906.50 548.00 306.50 83.50 27.00 94.50 103.50 495.00 836.50 1302.50 7723.50
2005 1582.50 1081.00 1089.00 465.00 312.00 13.00 9.00 20.50 88.00 476.50 863.00 1507.50 7507.00
2006 1145.00 1276.00 1056.50 400.50 210.00 22.50 0.00 0.50 205.50 570.00 870.50 1151.50 6908.50
2007 1472.50 1499.50 872.50 626.50 94.00 7.00 0.00 1.00 127.00 333.50 913.50 1549.50 7496.50
2008 1667.00 1566.54 b 1159.50 672.00 233.00 1.00 0.00 0.50 93.50 472.00 914.00 1608.50 8387.54
2009 1729.50 1216.50 1027.50 618.50 210.80 a 71.50 8.50 15.00 59.00 692.00 693.00 1545.50 7887.30
2010 1686.00 1432.00 864.90 a 352.50 234.00 7.00 0.00 0.00 107.00 340.00 906.50 1556.41 b 7486.31
2011 1712.00 1337.50 1120.50 598.50 242.50 23.50 0.00 0.00 139.44 c 361.00 845.50 1209.50 7589.94
2012 1295.00 1131.50 539.50 399.50 96.50 21.00 0.00 8.00 119.00 549.50 840.00 1320.00 6319.50
2013 1481.50 1250.50 45.00 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 0.00 z 2732.00
Period of Record Statistics
MEAN 1577.15 1304.25 1059.96 578.10 243.56 51.77 7.51 22.46 170.08 484.05 943.25 1401.13 7865.26
S.D. 201.65 189.22 164.33 113.83 91.56 35.18 10.46 21.01 58.43 113.72 137.56 178.62 580.60
SKEW -0.13 0.37 -0.18 -0.08 -0.01 0.68 2.58 1.27 0.31 -0.18 0.19 0.44 -0.02
MAX 2020.50 2006.37 1442.00 849.64 426.00 166.00 64.00 94.50 338.00 760.00 1269.50 1979.50 9211.50
MIN 1110.50 861.00 539.50 290.50 66.00 1.00 0.00 0.00 58.50 178.00 592.50 1058.50 6319.50
NO YRS 91 90 90 89 90 89 89 88 92 90 92 90 77