AITKIN, MINNESOTA

Monthly Total Heating Degree Days

(210059)

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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 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
1949 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
1950 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
1951 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
1952 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
1953 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
1954 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
1955 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
1956 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
1957 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
1958 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 295.50 n 1008.50 1710.50 2719.00
1959 1876.57 b 1474.50 1108.50 676.50 309.00 81.00 28.00 29.00 g 243.10 a 752.78 a 1335.00 1272.50 9157.46
1960 1703.50 1506.00 1449.50 708.00 345.50 134.00 26.00 g 17.88 e 273.50 568.00 1023.00 1619.50 9348.38
1961 1780.50 1203.00 978.00 865.00 434.00 82.00 31.50 12.40 a 308.50 552.00 1085.50 1620.00 8952.40
1962 1890.47 b 1543.50 1174.00 787.50 303.50 114.00 44.00 32.00 l 284.00 g 540.95 a 977.59 a 1533.98 a 8909.49
1963 1371.00 h 1545.00 1037.98 a 662.50 385.50 68.28 a 12.00 k 57.50 179.00 296.00 914.50 1786.50 6932.76
1964 1515.50 1370.00 1330.50 666.00 268.00 139.50 f 0.00 z 32.50 z 259.00 j 582.00 960.52 a 1747.50 8440.02
1965 1857.00 1570.50 1502.00 730.00 313.00 121.50 35.28 b 69.50 476.50 521.50 1055.50 1314.00 9566.28
1966 2067.18 a 1468.00 1048.83 a 811.50 433.50 81.43 b 5.50 j 79.00 h 189.00 f 409.00 j 662.50 l 1542.52 b 7452.96
1967 1637.50 1651.50 1214.17 d 732.32 b 520.80 a 77.50 g 22.50 j 52.59 c 200.36 b 472.50 f 786.00 g 1056.50 h 6009.23
1968 1715.16 b 1581.54 a 693.50 g 577.22 c 280.50 i 61.50 i 53.50 j 64.50 g 169.50 g 479.39 c 0.00 z 0.00 z 4353.31
1969 0.00 z 763.50 k 1327.12 b 648.62 a 267.00 f 0.00 z 22.50 l 13.00 r 194.00 h 613.50 f 1066.73 d 1119.00 f 3042.47
1970 1963.73 e 1521.52 c 1385.24 d 756.00 436.14 b 76.55 a 19.38 c 23.00 l 229.00 g 296.00 m 1075.80 e 1220.00 h 7234.36
1971 1371.50 j 1472.80 c 1333.00 c 654.11 b 424.38 b 81.00 e 77.50 d 79.00 p 308.33 c 492.00 1071.00 1595.50 7509.62
1972 1873.71 e 1347.50 f 1311.41 c 816.00 259.50 127.00 58.50 79.50 311.00 704.00 1061.40 e 1736.00 8338.02
1973 1577.56 d 1326.50 891.77 a 694.80 e 386.00 62.00 29.50 28.00 290.00 425.00 1035.00 a 1569.00 8315.12
1974 1764.00 1411.00 1164.22 d 665.69 a 468.44 d 102.00 13.50 101.50 378.10 a 564.50 975.00 1336.50 8944.46
1975 1668.50 830.00 n 0.00 z 780.00 e 155.50 f 115.20 e 23.50 58.12 c 325.00 495.00 1010.50 1567.00 6042.83
1976 1799.00 1198.50 1193.00 529.50 234.50 f 45.00 19.78 b 65.00 255.00 832.72 b 1272.00 1848.24 b 9057.74
1977 1556.00 h 1301.00 988.79 b 502.24 a 103.85 a 55.34 a 9.82 a 134.00 250.00 591.50 634.50 i 550.50 s 3936.55
1978 1874.00 1554.50 1169.50 582.00 f 276.62 e 88.27 d 41.85 a 54.00 213.62 a 565.50 1134.50 1736.52 a 8708.87
1979 2054.00 1642.50 1227.17 b 820.00 446.73 c 127.50 24.69 d 82.84 b 77.50 q 0.00 z 0.00 z 0.00 z 6425.43
1980 0.00 z 0.00 z 0.00 z 120.50 t 240.50 109.50 16.50 44.20 d 306.00 726.43 a 957.22 c 1554.50 3954.86
1981 1123.50 k 1261.04 a 994.58 a 439.50 h 349.00 103.27 d 41.85 a 49.27 c 303.10 a 684.67 b 890.00 1567.22 d 6244.01
1982 2087.00 778.50 l 0.00 z 792.50 238.50 223.00 19.00 104.00 320.50 589.00 1207.00 949.50 i 5580.50
1983 1297.50 g 1286.78 e 832.50 h 763.97 a 487.65 e 148.00 f 9.00 l 0.00 i 186.50 k 565.50 637.00 j 2044.45 a 5148.35
1984 1072.50 l 807.00 i 912.00 j 635.00 269.50 j 35.00 j 20.50 j 34.00 392.00 520.50 1101.50 1644.00 4327.00
1985 1837.00 1559.50 1010.50 575.17 a 240.00 206.50 31.00 110.50 304.00 667.50 1345.00 1962.50 9849.17
1986 1637.00 1503.50 1128.50 590.50 310.00 97.50 25.00 106.00 285.00 617.50 1230.50 1459.50 8990.50
1987 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 962.50 1373.82 a 2336.32
1988 1870.33 a 1626.15 b 1190.50 686.50 169.00 75.50 24.50 72.85 a 265.34 a 769.83 a 1077.41 a 1584.50 9412.42
1989 1609.93 a 1738.24 c 1334.03 a 791.38 a 343.07 a 113.00 9.00 51.00 245.50 583.00 1219.50 1866.41 b 9904.07
1990 1373.00 1405.50 1076.00 703.00 445.00 65.50 39.50 65.50 0.00 z 719.50 1000.00 1623.00 8515.50
1991 1759.00 1248.00 1101.50 0.00 z 0.00 z 43.50 39.00 34.50 313.00 718.50 1284.50 1564.50 8106.00
1992 1462.50 1236.00 1136.00 758.00 298.00 112.50 153.00 112.50 291.50 699.50 1189.00 1573.50 9022.00
1993 1724.50 1468.00 1223.00 806.00 374.00 181.50 62.00 49.50 405.50 702.50 1233.00 1549.00 9778.50
1994 2129.00 1667.00 1112.50 735.00 296.50 81.50 53.50 139.50 256.00 540.50 957.50 1379.00 9347.50
1995 1695.00 1540.00 1176.00 876.50 407.00 72.50 56.00 22.50 334.00 662.00 1322.50 1648.00 9812.00
1996 2047.50 1586.50 1480.50 874.50 439.50 120.00 46.50 33.00 288.50 640.50 1331.50 1715.50 10604.00
1997 1889.00 1452.50 1260.50 803.50 561.50 39.50 86.00 135.50 195.00 602.00 1187.50 1283.00 9495.50
1998 1585.00 1020.50 1188.00 629.50 183.00 151.50 41.50 17.50 208.50 532.00 960.00 1421.00 7938.00
1999 1757.50 1214.00 1088.50 626.50 300.00 144.50 11.00 49.50 308.00 699.50 806.00 1334.00 8339.00
2000 1683.50 1242.50 0.00 z 705.00 319.50 179.50 0.00 z 54.00 331.00 500.00 1042.00 1915.00 7972.00
2001 1492.00 1636.00 1262.00 687.00 298.00 77.00 27.00 28.00 0.00 z 607.50 698.50 1273.00 8086.00
2002 1470.50 1202.00 1470.50 787.50 559.00 63.00 14.50 60.50 257.50 934.50 1082.00 1353.00 9254.50
2003 1683.00 1543.50 1284.00 704.50 365.50 141.00 35.00 0.00 z 282.00 603.50 1110.50 1324.00 9076.50
2004 1938.00 1383.00 1106.00 665.50 530.50 199.00 56.00 167.50 153.00 595.00 917.00 1510.50 9221.00
2005 1832.50 1275.00 0.00 z 546.50 445.50 38.50 41.50 69.50 186.50 573.50 985.00 1390.50 7384.50
2006 0.00 z 1484.50 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 1484.50
2007 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
2008 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 593.50 1016.50 1727.00 3337.00
2009 1915.00 1412.00 1297.00 722.50 454.50 200.00 9.50 z 154.00 114.00 759.00 781.00 1600.50 9409.50
2010 1698.00 1434.50 919.00 501.00 353.00 131.50 0.50 f 14.50 g 347.50 477.50 1009.00 1608.00 8479.00
2011 1897.00 1458.50 1285.00 751.50 420.50 55.50 q 0.00 z 10.16 b 296.00 455.00 978.10 a 1224.50 8776.26
2012 1457.00 1224.50 562.00 l 0.00 z 342.00 52.00 h 0.00 j 52.00 q 134.50 q 486.50 j 975.50 1459.50 5458.50
2013 381.50 x 1455.50 374.50 w 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 1455.50
Period of Record Statistics
MEAN 1765.42 1432.75 1194.12 706.71 361.02 107.91 38.49 68.10 282.08 606.72 1062.11 1566.71 9263.69
S.D. 186.49 158.81 151.86 95.81 103.38 47.69 26.88 41.07 70.35 115.16 146.58 194.75 647.87
SKEW -0.07 -0.37 0.13 -0.32 -0.13 0.71 2.32 0.74 0.10 0.24 0.10 0.30 -0.19
MAX 2129.00 1738.24 1502.00 876.50 561.50 223.00 153.00 167.50 476.50 934.50 1345.00 2044.45 10604.00
MIN 1373.00 1020.50 891.77 501.00 103.85 38.50 9.00 10.16 114.00 296.00 698.50 1224.50 7938.00
NO YRS 42 46 41 45 44 42 36 38 39 45 47 46 18