ROCHESTER INTL AP, MINNESOTA

Monthly Total Heating Degree Days

(217004)

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
1893 766.50 r 0.00 z 1269.97 a 744.11 b 341.52 a 7.00 x 0.00 r 45.50 172.50 b 293.50 g 1059.60 e 0.00 z 3633.19
1894 1625.00 1055.00 f 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 1625.00
1895 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
1896 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
1897 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
1898 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
1899 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
1900 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
1901 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
1902 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
1903 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
1904 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
1905 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
1906 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
1907 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
1908 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 51.00 m 36.00 23.77 a 81.00 0.00 z 0.00 z 1043.00 1183.77
1909 0.00 z 1253.50 1118.00 791.50 360.08 e 80.00 c 20.00 20.00 249.00 648.93 a 810.00 1590.41 c 6941.42
1910 1634.50 1096.50 h 684.50 492.50 408.00 88.89 c 7.75 a 43.50 211.50 422.00 1115.00 1491.50 6599.64
1911 1680.50 1189.00 962.00 628.50 161.50 23.50 39.78 a 0.00 z 216.35 d 621.50 1236.00 1242.00 8000.63
1912 2126.00 1482.50 1346.50 487.76 a 212.00 123.50 27.50 51.50 243.00 514.00 861.50 1302.52 a 8778.28
1913 1540.00 1503.50 1244.00 569.00 358.50 72.50 13.00 8.50 224.50 572.50 739.50 1100.00 7945.50
1914 1308.00 1546.50 1089.00 625.00 252.00 56.00 3.50 39.50 166.00 335.00 885.00 1626.00 7931.50
1915 1640.42 a 1123.50 1174.00 337.50 395.25 a 157.50 b 50.50 117.00 175.50 437.50 921.50 1343.50 7873.67
1916 1574.50 1498.00 1140.00 647.00 318.50 142.50 0.00 37.00 231.00 515.63 a 960.00 1598.00 8662.13
1917 1773.50 1678.50 1159.50 690.50 409.50 132.50 31.00 68.50 201.50 839.00 838.50 1715.00 9537.50
1918 1943.18 a 1379.50 864.38 a 704.50 211.00 41.50 41.50 7.00 f 308.00 470.00 849.00 1106.81 d 7919.38
1919 1348.00 1273.00 1071.50 615.00 297.08 a 38.57 b 0.00 32.50 116.50 675.69 d 1060.86 a 1695.00 8223.70
1920 1779.00 1372.00 1004.92 a 756.50 288.00 85.00 18.50 65.50 107.50 275.00 h 962.00 0.00 z 6438.92
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1928 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 387.00 g 870.50 1249.00 2119.50
1929 1886.83 e 1568.00 a 962.50 276.50 n 377.50 94.00 11.07 c 47.50 242.00 525.97 a 1051.55 a 1449.25 c 8216.17
1930 1796.00 1013.50 993.50 544.00 251.50 52.00 22.00 22.00 191.00 570.00 833.50 1331.50 7620.50
1931 1263.54 d 924.00 1034.50 505.50 356.00 36.50 11.00 47.50 95.69 a 354.90 b 748.00 1064.50 6441.62
1932 1456.00 1293.61 a 1388.50 601.00 237.00 3.50 16.00 16.50 232.50 593.00 1048.45 a 1494.50 8380.56
1933 1219.00 1434.00 1074.67 a 644.00 284.50 32.50 4.50 58.00 107.00 596.50 1010.50 1426.00 7891.17
1934 1366.00 1279.00 1096.00 626.50 124.00 15.00 10.00 97.50 259.00 394.00 817.00 1589.00 7673.00
1935 1675.50 1178.50 952.50 653.00 406.00 139.00 0.00 64.00 175.50 558.50 1050.00 1461.50 8314.00
1936 1835.50 1871.00 1026.00 747.00 128.50 97.00 2.00 6.50 132.50 614.50 1049.00 1328.50 8838.00
1937 1908.57 a 1556.00 1273.50 699.00 320.50 125.00 20.50 9.50 247.50 679.00 1111.00 1530.50 9480.57
1938 1584.00 1243.00 903.50 638.00 328.00 84.50 2.00 23.50 172.50 402.00 999.50 1402.00 7782.50
1939 1400.50 1512.50 1148.00 711.00 174.50 44.00 6.50 31.00 153.00 532.50 905.00 1142.50 7761.00
1940 1861.00 1359.50 1255.00 639.00 299.00 31.00 1.00 65.50 142.00 392.50 1090.00 1336.00 8471.50
1941 1470.00 1412.50 1162.50 410.50 146.50 75.00 13.00 22.50 151.00 465.00 877.00 1189.00 7394.50
1942 1440.47 a 1307.50 958.00 439.00 349.50 78.00 18.50 33.50 279.50 531.50 962.50 1572.00 7969.97
1943 1754.50 1331.50 1272.50 642.50 353.00 72.50 0.50 25.50 278.50 559.50 1112.00 1327.00 8729.50
1944 1255.00 1298.00 1208.50 707.00 195.00 64.00 9.00 35.00 155.00 483.50 816.00 1470.50 7696.50
1945 1649.00 1357.50 807.50 645.50 435.50 167.00 28.00 26.00 253.50 548.50 1004.50 1628.00 8550.50
1946 1517.50 1293.00 699.00 467.00 338.50 95.00 0.50 51.00 220.50 427.00 957.00 1344.00 7410.00
1947 1402.00 1417.00 1136.50 702.50 401.50 108.00 21.50 4.50 213.50 246.00 1137.00 1481.00 8271.00
1948 1731.50 1418.00 1171.50 469.00 278.00 39.50 10.00 18.00 117.00 506.50 870.50 1416.50 8046.00
1949 1554.00 1403.50 1084.50 575.50 184.50 16.50 0.00 22.00 245.50 387.50 867.50 1368.00 7709.00
1950 1697.00 1418.50 1285.00 822.00 276.00 73.50 15.50 75.00 145.00 364.00 1131.00 1680.50 8983.00
1951 1790.00 1356.50 1356.50 731.50 162.00 85.34 a 13.50 41.50 249.50 514.50 1207.50 1517.50 9025.84
1952 1595.50 1186.50 1211.00 554.50 325.00 34.50 13.95 a 32.00 195.50 712.50 918.00 1318.00 8096.95
1953 1481.00 1294.00 1062.50 768.00 275.00 46.00 11.00 12.92 a 197.50 360.00 828.50 1320.50 7656.92
1954 1648.68 a 931.00 1147.50 536.50 421.00 57.50 0.00 20.50 184.50 568.00 847.00 1321.00 7683.18
1955 1561.00 1395.00 1179.00 398.50 179.50 72.00 0.00 9.50 181.00 477.92 a 1161.50 1618.50 8233.42
1956 1631.00 1505.50 1257.00 737.00 283.00 26.50 10.50 39.50 241.00 306.00 990.00 1300.00 8327.00
1957 1706.50 1195.00 1081.38 a 582.00 325.50 64.50 0.00 25.00 211.00 544.00 942.00 1244.00 7920.88
1958 1369.00 1423.50 1060.00 583.50 250.50 178.00 41.50 64.00 169.00 408.00 901.50 1578.50 8027.00
1959 1725.50 1457.50 1118.00 564.00 205.50 49.00 12.00 5.50 206.00 653.50 1208.50 1099.00 8304.00
1960 1425.50 1340.50 1428.00 583.00 259.50 102.50 29.00 14.50 209.50 492.00 894.31 a 1481.50 8259.81
1961 1548.00 1102.00 1074.00 812.50 355.00 65.50 5.50 11.50 248.50 445.50 999.50 1545.50 8213.00
1962 1735.50 1447.50 1273.50 714.00 193.00 66.50 33.50 21.50 267.50 438.28 b 865.00 1418.00 8473.78
1963 1891.50 1454.00 1010.50 564.50 327.00 50.50 6.00 56.50 152.00 231.50 788.50 1716.50 8249.00
1964 1354.50 1187.50 1223.00 596.00 187.50 71.50 5.50 95.50 258.50 574.50 935.50 1538.50 8028.00
1965 1715.00 1495.00 1454.00 694.00 228.00 44.50 10.50 68.00 311.50 471.50 940.00 1131.50 8563.50
1966 1916.50 1396.00 963.50 722.50 419.00 56.00 6.50 61.50 216.00 534.50 997.00 1413.50 8702.50
1967 1535.00 1525.50 1048.50 617.00 444.50 31.50 51.50 96.00 203.50 589.50 1057.50 1339.50 8539.50
1968 1563.50 1453.50 876.00 513.50 418.00 92.00 34.50 72.50 220.00 498.00 937.50 1482.00 8161.00
1969 1711.00 1300.00 1356.50 534.00 266.00 186.50 11.50 12.00 182.50 618.50 942.00 1437.00 8557.50
1970 1882.50 1397.50 1199.00 595.00 254.00 59.50 18.00 13.00 208.50 484.00 972.50 1456.50 8540.00
1971 1835.50 1361.00 1204.00 575.50 331.50 19.50 31.50 33.50 175.00 367.00 923.00 1394.00 8251.00
1972 1814.00 1525.50 1151.00 711.50 223.50 91.00 42.00 73.00 226.00 675.50 1012.50 1676.00 9221.50
1973 1526.50 1257.00 799.50 680.50 359.50 22.00 4.50 16.00 205.00 356.50 912.00 1555.00 7694.00
1974 1617.00 1378.00 1104.50 551.50 357.50 82.00 0.50 53.00 314.50 487.00 947.50 1323.00 8216.00
1975 1563.50 1388.50 1365.00 761.00 201.00 63.00 20.00 8.00 279.50 387.50 827.50 1319.00 8183.50
1976 1620.00 1067.00 1029.50 474.00 291.50 24.50 1.00 27.50 230.50 717.50 1202.50 1719.50 8405.00
1977 2069.50 1212.50 815.00 376.00 94.00 42.00 1.00 64.50 148.50 550.50 990.50 1572.00 7936.00
1978 1905.50 1588.00 1137.50 608.50 260.00 68.50 12.00 22.00 146.50 587.00 1077.50 1626.00 9039.00
1979 2061.50 1660.00 1188.50 686.50 327.00 33.50 0.50 49.00 130.00 548.50 980.00 1209.50 8874.50
1980 1537.00 1449.50 1192.50 550.50 211.50 56.50 0.50 11.50 187.50 665.00 888.00 1420.00 8170.00
1981 1433.00 1193.50 911.50 507.00 314.00 45.00 22.00 29.00 242.00 628.50 874.50 1508.50 7708.50
1982 1924.00 1368.00 1129.50 724.50 168.00 132.50 0.00 50.00 182.50 471.00 971.00 1206.00 8327.00
1983 1464.50 1152.00 1019.50 772.00 409.50 90.50 8.50 0.00 212.00 563.00 945.50 1925.00 8562.00
1984 1630.50 1148.50 1290.00 606.50 389.00 42.50 25.00 20.00 287.00 479.50 959.00 1423.50 8301.00
1985 1698.00 1406.50 905.00 464.00 171.00 134.50 7.00 60.00 273.00 589.50 1262.00 1819.00 8789.50
1986 1523.00 1392.00 1002.00 500.00 253.50 64.50 5.50 85.50 192.50 542.50 1161.00 1317.50 8039.50
1987 1419.00 1000.50 895.00 432.50 177.50 33.50 8.50 66.00 175.50 704.00 845.50 1294.50 7052.00
1988 1758.50 1529.00 1028.00 629.00 148.50 23.50 3.50 28.50 159.00 713.00 976.50 1421.00 8418.00
1989 1342.00 1558.50 1199.00 628.00 297.00 102.50 0.00 18.50 229.50 509.00 1139.00 1705.00 8728.00
1990 1214.50 1202.00 920.00 602.00 350.50 56.00 11.00 16.00 171.50 574.50 821.00 1539.00 7478.00
1991 1703.50 1161.50 959.50 514.50 224.50 13.00 16.00 25.50 278.50 604.00 1232.00 1347.00 8079.50
1992 1350.50 1111.50 1045.50 686.50 243.50 83.50 75.50 107.50 233.50 593.00 1027.00 1400.50 7958.00
1993 1623.00 1413.00 1219.50 700.00 299.50 90.50 8.00 32.00 348.00 611.50 1040.50 1349.00 8734.50
1994 1911.00 1512.00 989.00 619.00 240.00 36.50 28.00 77.00 121.50 452.50 857.00 1272.00 8115.50
1995 1510.00 1291.00 981.50 740.00 309.00 57.50 15.00 0.00 248.00 575.00 1179.00 1453.00 8359.00
1996 1717.50 1391.00 1238.00 726.50 382.00 76.50 26.50 21.00 222.00 535.00 1213.00 1588.50 9137.50
1997 1690.50 1292.50 1139.00 698.00 425.00 23.00 40.00 55.50 156.00 503.00 1124.00 1241.50 8388.00
1998 1405.50 996.00 1085.50 477.00 121.00 114.00 3.50 2.00 103.50 479.00 861.50 1239.50 6888.00
1999 1647.65 a 1076.50 998.00 549.00 229.00 85.50 5.00 22.00 244.00 560.50 765.00 a 1285.00 7467.15
2000 1568.50 1123.00 799.00 581.50 229.50 88.50 27.00 13.00 198.00 416.50 1049.50 1826.50 7920.50
2001 1476.00 1506.50 1272.00 522.50 254.50 95.00 13.00 33.50 226.50 570.00 587.00 1199.70 a 7756.20
2002 1262.50 1093.50 1225.50 624.00 370.00 46.00 1.50 24.50 149.50 718.50 1011.50 1261.00 7788.00
2003 1595.50 1402.50 1059.00 594.00 301.50 66.50 11.00 9.50 222.50 514.00 989.00 1261.00 8026.00
2004 1632.00 1304.00 901.00 502.00 265.50 91.00 19.00 106.00 95.50 508.50 862.00 1346.50 7633.00
2005 1571.50 1130.50 1096.00 451.50 314.50 1.00 9.00 25.00 94.50 450.50 875.50 1480.50 7500.00
2006 1143.00 1270.50 998.50 410.00 251.00 34.00 0.00 0.50 234.50 643.00 853.00 1115.50 6953.50
2007 1447.00 1526.00 907.00 614.50 139.50 15.50 4.50 14.50 117.00 365.00 938.00 1487.00 7575.50
2008 1593.00 1500.50 1131.50 626.50 280.50 11.50 1.00 13.00 119.50 484.00 912.00 1628.00 8301.00
2009 1751.00 1239.50 1000.00 570.00 241.00 89.00 42.00 56.00 100.50 696.50 665.50 1498.50 7949.50
2010 1673.00 1379.50 828.50 363.00 249.00 25.50 0.00 8.50 172.50 396.00 896.00 1558.00 7549.50
2011 1660.50 1316.00 1088.00 589.50 252.50 52.00 0.00 6.00 214.50 397.00 795.00 1206.50 7577.50
2012 1309.00 1081.50 508.00 478.50 119.50 17.50 0.00 25.50 150.00 503.50 797.50 1270.50 6261.00
2013 1471.00 1275.50 1284.43 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 4030.93
Period of Record Statistics
MEAN 1609.82 1336.08 1086.14 602.69 279.52 67.35 14.19 36.85 198.40 519.99 961.20 1419.59 8124.91
S.D. 202.93 172.08 169.43 108.33 85.61 39.63 14.60 27.27 56.57 111.78 132.63 182.44 585.10
SKEW 0.10 -0.09 -0.45 -0.23 -0.05 0.79 1.43 0.92 0.02 -0.02 0.17 0.22 -0.35
MAX 2126.00 1871.00 1454.00 822.00 444.50 186.50 75.50 117.00 348.00 839.00 1262.00 1925.00 9537.50
MIN 1143.00 924.00 508.00 337.50 94.00 1.00 0.00 0.00 81.00 231.50 587.00 1043.00 6261.00
NO YRS 97 96 98 96 97 96 97 96 98 95 98 97 90