TRACY, MINNESOTA

Monthly Total Heating Degree Days

(218323)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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 490.50 123.50 123.00 5.00 0.00 z 193.50 0.00 z 0.00 z 0.00 z 935.50
1913 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 37.00 0.00 0.00 161.50 587.00 715.00 1075.00 2575.50
1914 1284.95 a 1549.50 1049.50 570.50 165.00 17.00 0.00 39.00 97.50 288.00 783.00 1650.00 7493.95
1915 1575.00 1135.00 1209.50 295.00 337.42 e 99.00 38.00 65.50 156.00 362.00 839.50 1340.50 7452.42
1916 1808.50 1534.00 1148.00 643.89 c 267.50 118.50 0.00 32.00 197.00 548.50 908.00 1619.50 8825.39
1917 1734.50 1579.50 1163.50 701.00 360.00 88.50 14.00 27.50 166.50 777.50 746.00 1708.00 9066.50
1918 1852.50 1263.50 781.50 636.50 181.50 57.50 5.50 6.50 244.50 405.00 855.00 1193.50 7483.00
1919 1242.50 1362.00 1031.27 a 608.50 274.50 62.00 0.00 9.00 90.00 680.50 1127.50 1636.05 b 8123.82
1920 1643.50 1359.00 1014.00 807.00 214.00 86.00 3.50 24.00 108.00 304.00 976.50 1351.00 7890.50
1921 1286.00 1058.00 889.50 459.00 244.00 28.00 2.00 18.00 103.50 382.50 1212.00 1291.50 6974.00
1922 1569.50 1497.00 1012.50 559.00 147.50 14.00 14.00 12.40 a 94.50 404.00 827.00 1473.50 7624.90
1923 1459.00 1448.50 1285.50 597.50 231.50 48.00 3.00 22.50 91.50 542.00 796.00 1058.00 7583.00
1924 1714.00 1200.50 1097.00 541.00 441.00 71.00 13.00 19.00 199.50 277.50 928.00 1710.50 8212.00
1925 1610.50 1207.50 878.50 337.50 318.50 63.50 13.00 2.50 97.50 863.50 936.00 1448.50 7777.00
1926 1435.62 b 1093.50 1138.50 595.50 114.00 94.00 7.00 5.00 235.00 520.50 1156.00 1525.50 7920.12
1927 1483.50 1156.50 959.00 568.00 352.00 120.50 15.00 45.00 205.00 370.00 1093.00 1773.00 8140.50
1928 1449.50 1271.00 968.00 772.00 158.00 94.50 1.50 38.50 206.50 497.00 884.00 1185.50 7526.00
1929 1928.50 1583.00 930.50 569.50 344.00 75.00 5.34 b 7.00 268.00 479.00 1111.50 1427.55 a 8728.89
1930 1842.00 964.00 1007.50 469.50 257.00 59.00 7.50 1.00 159.00 580.50 882.50 1244.00 7473.50
1931 1167.50 917.00 1024.50 475.00 322.00 26.00 2.00 21.50 80.50 382.50 832.00 1170.50 6421.00
1932 1531.00 1289.00 1314.00 559.00 197.50 10.00 12.50 9.50 131.50 570.50 1068.00 1502.50 8195.00
1933 1274.50 1430.50 1049.50 589.00 262.98 a 11.50 0.00 5.50 60.00 519.00 947.50 1471.50 7621.48
1934 1371.50 1216.50 1065.50 558.50 72.50 11.50 3.50 47.00 251.00 344.00 817.50 1546.12 c 7305.12
1935 1665.00 1055.50 933.00 670.50 361.00 114.00 0.00 43.50 122.00 534.50 1159.00 1474.50 8132.50
1936 2012.00 1993.50 1063.50 725.50 142.50 72.00 0.00 1.50 n 88.00 565.23 a 1048.97 a 1336.00 9047.20
1937 1948.72 b 1415.50 1175.00 701.50 202.00 83.50 1.50 3.00 150.00 573.50 1025.50 1529.00 8808.72
1938 1619.00 1331.00 886.50 548.00 318.50 41.50 0.00 0.00 89.50 250.50 1003.50 1309.50 7397.50
1939 1373.00 1545.50 1031.00 611.00 83.50 28.50 0.00 11.50 127.00 507.88 a 757.00 1090.00 7165.88
1940 1804.50 1322.50 1233.00 644.00 264.50 36.00 6.00 60.00 89.00 266.00 1143.00 1271.50 8140.00
1941 1464.50 1343.00 1109.50 446.50 112.50 77.00 18.50 16.50 149.50 417.50 867.00 1177.00 7199.00
1942 1359.00 1261.50 947.50 395.50 332.00 63.00 7.50 14.50 278.79 a 455.50 935.50 1554.50 7604.79
1943 1833.00 1188.50 1194.50 514.50 334.50 78.50 2.50 13.00 213.00 442.50 1027.76 a 1234.00 8076.26
1944 1106.50 1266.00 1236.00 698.00 180.00 49.50 5.00 39.50 116.50 376.50 862.00 436.50 t 5935.50
1945 0.00 z 780.00 i 759.00 613.50 373.00 159.00 15.00 12.50 222.50 446.50 1010.50 1615.00 5226.50
1946 1503.50 1266.50 718.00 365.50 61.50 s 89.00 0.00 37.00 166.00 447.00 1012.50 1303.00 6908.00
1947 1281.00 1436.00 1130.00 692.50 338.50 100.00 8.50 0.00 160.00 246.50 1102.00 1416.50 7911.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 b 12.00 78.00 429.00 958.97 a 1409.00 2886.97
1949 1662.00 1407.00 1079.83 a 545.50 140.02 a 16.03 a 1.50 9.30 a 177.50 414.00 729.00 1375.50 7557.18
1950 1839.50 1260.00 1225.50 844.50 317.00 39.81 d 9.50 61.00 104.50 366.00 1084.00 1571.50 8722.81
1951 1674.00 a 1222.50 1429.21 b 738.00 140.53 a 103.45 a 17.00 24.00 247.00 527.00 1119.50 1570.00 8812.19
1952 1618.00 1188.00 1283.92 a 519.00 257.00 19.50 4.00 11.62 c 140.00 546.50 858.00 1299.50 7745.04
1953 1480.00 1211.00 997.00 736.00 255.00 42.50 6.50 3.50 127.00 289.00 806.00 1390.00 7343.50
1954 1731.50 899.50 1166.50 521.50 389.57 a 54.00 0.00 2.50 146.38 a 582.00 795.00 1301.00 7589.45
1955 1135.00 g 1419.50 1126.00 303.50 88.00 52.00 0.00 2.00 127.50 373.00 1177.50 1630.00 6299.00
1956 1603.50 1447.00 1178.50 702.41 a 216.00 11.50 2.50 23.00 165.52 a 232.50 952.00 1227.50 7761.93
1957 1687.00 1187.00 1061.00 564.00 288.50 30.50 0.00 19.00 163.50 502.50 949.50 1159.50 7612.00
1958 1319.50 1377.00 1076.50 542.14 b 95.00 i 94.50 7.50 18.50 90.00 b 345.59 d 843.75 b 1471.00 7185.99
1959 1638.50 1365.50 905.50 524.00 198.92 a 23.50 4.00 1.50 149.50 636.50 1191.50 1088.50 7727.42
1960 1563.50 1421.00 1431.00 562.00 232.50 31.50 5.00 1.00 166.00 409.00 836.50 1385.00 8044.00
1961 1511.50 1106.50 909.50 713.00 315.50 27.00 0.00 3.00 185.00 396.50 953.50 1531.50 7652.50
1962 1633.50 1365.00 1242.50 646.11 c 182.00 66.50 33.50 15.50 232.00 413.50 852.50 1383.63 a 8066.24
1963 1892.00 1427.50 968.00 522.50 293.50 27.50 4.00 23.50 114.00 215.50 842.50 1674.52 a 8005.02
1964 1335.50 1224.21 a 1299.00 567.50 182.50 58.50 1.50 78.50 233.00 531.50 980.00 1663.00 8154.71
1965 1771.00 1540.00 1513.83 d 517.50 i 212.00 18.00 4.00 40.82 a 169.00 v 399.50 956.50 1113.00 7568.65
1966 1958.00 1455.50 929.50 748.50 376.00 41.00 0.50 55.50 193.00 550.00 1117.00 1479.00 8903.50
1967 1536.05 a 1547.50 1045.00 641.50 372.00 38.00 27.00 30.00 116.90 a 502.50 948.50 1335.50 8140.45
1968 1522.00 1423.50 735.50 468.00 343.50 54.00 23.77 a 49.00 201.96 b 530.50 955.00 1541.00 7847.73
1969 1868.50 1373.04 a 1441.50 572.50 253.68 a 164.00 11.50 6.50 152.50 665.50 971.38 a 1404.00 8884.60
1970 1891.50 1382.00 1271.00 667.00 267.00 46.00 16.50 24.00 208.50 567.50 1060.00 1550.00 8951.00
1971 1804.00 1349.00 1139.00 541.00 300.50 31.50 33.50 25.00 205.50 430.00 985.50 1529.00 8373.50
1972 1780.50 1566.00 1161.00 738.00 227.50 64.00 25.50 59.50 223.00 637.00 1007.00 1622.50 9111.50
1973 1480.50 1201.57 e 828.50 618.00 313.50 34.00 5.50 2.50 214.00 356.50 952.00 1573.00 7579.57
1974 1687.00 1336.50 1113.50 586.00 364.00 68.00 1.00 41.50 264.50 493.00 953.00 1312.50 8220.50
1975 1543.00 1462.50 1354.50 851.50 195.00 72.50 10.50 8.00 253.50 450.00 926.50 1453.50 8581.00
1976 1675.00 1129.00 1083.50 485.17 a 278.00 40.00 0.00 14.50 203.00 688.00 1140.50 1625.43 a 8362.11
1977 1977.50 1172.00 954.00 430.50 69.00 12.00 2.00 65.00 120.50 553.00 1020.50 1565.00 7941.00
1978 1937.00 1571.00 1131.50 649.50 241.00 57.50 22.50 13.00 u 0.00 z 0.00 z 659.00 p 1546.00 7156.00
1979 2005.00 1709.00 1247.00 761.00 365.00 68.00 7.00 47.00 136.00 550.50 1001.50 1213.00 9110.00
1980 1514.50 1439.00 1212.00 531.00 209.50 25.00 1.00 25.00 176.00 635.50 b 823.50 1432.00 8024.00
1981 1429.50 1172.50 858.50 438.00 245.93 a 18.00 20.00 29.00 162.50 574.50 813.00 1509.00 7270.43
1982 2022.50 1410.50 1111.00 719.00 185.00 108.50 0.00 a 33.00 205.50 524.00 1105.00 1272.50 8696.50
1983 1459.50 1164.00 1082.00 744.50 354.00 73.50 0.00 0.00 201.50 543.50 968.50 2007.50 8598.50
1984 1606.32 a 1100.96 a 1355.00 609.50 310.00 19.00 3.00 15.50 297.00 483.50 943.00 1460.50 8203.28
1985 1723.50 1420.00 924.50 472.00 141.50 122.50 9.00 67.00 288.50 598.00 1307.50 1733.42 a 8807.42
1986 1440.50 1445.50 980.50 541.00 245.50 34.50 9.00 74.00 202.50 513.50 1123.00 0.00 z 6609.50
1987 1308.09 c 923.00 933.00 395.00 112.50 21.50 8.78 a 56.50 132.00 679.00 837.50 1314.00 6720.87
1988 1786.50 1572.50 1019.00 625.50 93.50 7.50 3.50 33.00 155.00 665.50 1000.00 1398.00 8359.50
1989 1323.00 1608.00 1259.00 652.50 263.00 77.00 1.50 13.00 225.00 513.00 1119.00 1692.50 8746.50
1990 1187.50 1207.50 974.00 609.00 306.00 44.50 22.50 18.50 143.50 572.50 886.00 1552.00 7523.50
1991 1645.50 1055.00 1005.00 504.50 243.50 13.00 9.00 16.00 211.00 589.50 1233.50 1224.50 7750.00
1992 1274.50 1098.50 933.50 740.00 193.00 79.00 67.50 85.50 215.50 565.50 1086.50 1504.00 7843.00
1993 1641.50 1445.50 1184.50 703.00 290.50 108.50 4.50 25.50 312.50 610.00 1115.00 1429.50 8870.50
1994 1931.50 1546.50 985.00 649.00 221.50 21.00 20.00 46.00 132.00 456.50 875.50 1290.50 8175.00
1995 1520.50 1246.50 1053.00 767.50 332.50 43.00 7.00 8.50 229.00 595.00 1200.00 1437.50 8440.00
1996 1821.00 1370.00 0.00 z 753.50 395.50 51.00 13.00 6.00 241.00 510.00 1275.00 1704.50 8140.50
1997 1779.00 1294.50 1167.50 740.50 402.50 0.00 25.50 34.50 116.00 487.50 1145.00 1210.50 8403.00
1998 1517.00 974.00 1207.50 532.00 102.50 100.50 1.50 1.50 71.00 443.00 895.00 1234.50 7080.00
1999 1654.37 a 1043.50 984.00 550.50 203.00 52.00 2.50 6.50 193.50 543.50 673.50 1238.00 7144.87
2000 1546.00 1063.50 794.50 610.50 193.00 75.50 29.50 9.00 189.60 e 206.50 l 1131.21 a 1839.00 7481.31
2001 1440.43 b 1565.50 1253.00 575.50 195.00 48.10 a 2.50 12.92 a 148.50 539.92 a 572.50 1235.50 7589.37
2002 1335.00 1116.50 1397.50 629.00 354.50 25.50 4.50 12.50 142.50 855.00 1002.00 1205.50 8080.00
2003 1543.00 1432.50 1100.50 575.50 248.50 55.50 1.50 5.50 218.00 477.00 1048.00 1281.50 7987.00
2004 1638.50 887.50 j 915.00 546.50 303.00 91.55 a 17.00 94.55 a 99.50 467.50 812.50 1306.00 6291.60
2005 1596.00 1108.50 1086.50 438.00 305.50 5.50 9.50 21.50 84.00 467.00 867.50 1490.50 7480.00
2006 1181.00 1319.50 1087.50 436.50 241.00 30.00 1.50 9.50 248.00 614.50 883.00 1178.50 7230.50
2007 1458.00 1498.00 922.00 638.08 d 117.00 23.50 2.00 27.00 153.00 395.00 941.50 1516.00 7691.08
2008 1637.00 1515.00 1190.00 713.50 305.00 20.50 3.00 6.00 138.50 503.00 948.50 1668.32 a 8648.32
2009 1740.00 1288.00 a 1097.50 642.00 237.50 101.50 20.50 44.50 80.50 731.00 709.50 1583.50 8276.00
2010 1725.50 1445.00 935.50 356.50 262.50 25.50 0.00 5.00 173.00 393.00 925.00 1619.00 7865.50
2011 1753.50 1333.23 b 0.00 z 641.50 291.92 a 0.00 z 0.00 a 9.09 b 198.50 399.50 869.50 1187.82 a 6684.55
2012 1302.50 1119.50 607.00 465.54 b 144.00 26.00 0.00 b 24.50 153.50 601.00 898.97 a 1382.00 6724.50
2013 1507.63 a 1372.50 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 0.00 z 2880.13
Period of Record Statistics
MEAN 1596.39 1319.60 1076.84 590.67 248.99 55.17 8.29 24.11 168.14 493.31 963.18 1426.97 7968.28
S.D. 217.88 190.95 170.93 117.99 87.23 35.32 10.63 21.58 57.78 126.96 141.58 189.26 596.15
SKEW -0.05 0.16 0.05 -0.20 -0.16 0.75 2.44 1.14 0.24 0.22 0.06 0.21 -0.03
MAX 2022.50 1993.50 1513.83 851.50 441.00 164.00 67.50 94.55 312.50 863.50 1307.50 2007.50 9111.50
MIN 1106.50 899.50 607.00 295.00 69.00 0.00 0.00 0.00 60.00 215.50 572.50 1058.00 6421.00
NO YRS 97 97 96 98 97 99 101 98 99 98 99 98 85