CAIRO 3 N, ILLINOIS

Monthly Total Cooling Degree Days

(111166)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 384.50 488.50 453.12 a 227.50 4.50 1.50 0.00 a 1559.62
1949 0.00 0.00 b 7.50 18.50 197.00 391.00 541.00 437.50 126.50 80.00 0.52 a 0.00 1799.52
1950 8.50 0.00 4.00 21.00 197.50 367.00 373.00 295.00 148.00 97.50 7.50 0.00 1519.00
1951 0.00 0.00 1.50 44.00 177.50 335.00 486.50 483.00 169.00 69.00 0.00 2.50 1768.00
1952 0.00 0.00 2.00 39.50 183.50 607.00 550.00 452.50 183.00 14.00 7.00 0.00 2038.50
1953 0.00 0.00 0.00 29.50 211.50 544.50 545.50 479.00 288.00 86.00 1.50 0.00 2185.50
1954 0.00 3.50 0.00 112.00 104.50 463.50 615.50 554.00 346.00 108.00 0.00 0.00 2307.00
1955 0.00 0.50 11.00 78.50 190.00 242.00 559.50 512.00 334.00 49.00 19.50 0.00 1996.00
1956 0.00 0.00 8.50 42.00 217.50 369.00 512.50 498.50 201.50 84.00 4.50 2.00 1940.00
1957 0.00 0.00 0.00 114.00 181.00 379.50 467.50 431.50 194.50 13.00 0.00 0.00 1781.00
1958 0.00 0.00 0.00 16.00 184.00 313.50 483.50 447.00 234.50 44.50 13.50 0.00 1736.50
1959 0.00 0.00 0.50 40.00 255.00 357.00 435.50 490.50 267.00 67.50 0.00 0.00 1913.00
1960 0.00 0.00 3.00 73.00 152.50 345.50 437.50 484.00 315.00 56.00 0.00 0.00 1866.50
1961 0.00 0.00 2.50 31.00 67.50 311.50 441.00 386.50 273.00 51.00 8.00 0.00 1572.00
1962 0.00 0.00 0.00 43.50 378.50 350.50 491.00 421.00 166.00 99.50 0.00 0.00 1950.00
1963 0.00 0.00 19.00 71.50 172.50 411.50 469.00 418.00 221.00 159.50 2.50 0.00 1944.50
1964 0.00 0.00 0.00 68.50 226.50 435.50 497.00 427.00 232.00 8.00 8.50 0.00 1903.00
1965 0.00 0.00 0.00 66.00 264.50 353.00 463.00 418.50 235.50 30.50 0.50 0.00 1831.50
1966 0.00 0.00 12.00 13.50 115.50 351.00 557.00 336.50 147.50 16.00 7.00 1.50 1557.50
1967 2.00 0.00 36.00 81.50 110.50 363.00 357.50 273.50 146.50 64.50 0.00 0.00 1435.00
1968 0.00 0.00 7.00 17.00 108.50 408.00 473.50 448.00 178.50 65.00 3.00 0.00 1708.50
1969 0.00 0.00 0.00 15.00 171.50 366.00 540.00 412.00 205.00 76.50 0.00 0.00 1786.00
1970 0.00 0.00 0.00 58.50 230.00 309.50 448.00 452.00 330.00 31.50 0.00 0.00 1859.50
1971 0.00 0.00 0.00 46.00 74.50 452.00 391.00 367.50 289.00 101.50 8.00 0.00 1729.50
1972 0.00 0.00 0.50 45.00 168.00 342.00 411.50 391.00 272.00 29.50 8.00 0.00 1667.50
1973 0.00 0.00 3.00 18.50 67.50 394.50 497.00 416.50 272.00 87.50 3.00 0.00 1759.50
1974 0.00 0.00 11.00 37.50 164.00 234.00 498.50 356.50 93.50 29.50 10.50 0.00 1435.00
1975 0.00 0.00 0.00 52.00 245.50 436.50 479.00 415.50 155.00 84.50 6.00 0.00 1874.00
1976 0.00 0.00 11.00 63.00 69.50 290.00 461.50 351.00 174.50 25.50 0.00 0.00 1446.00
1977 0.00 0.00 8.00 101.00 319.00 430.50 567.50 430.50 284.50 12.50 4.50 0.00 2158.00
1978 0.00 0.00 3.00 50.50 200.00 408.50 547.50 400.50 305.50 18.50 2.00 0.00 1936.00
1979 0.00 0.00 0.00 13.50 126.00 394.50 477.00 436.00 214.50 63.00 2.00 0.00 1726.50
1980 0.00 0.00 0.00 28.00 167.00 384.00 643.00 561.50 301.00 51.00 3.00 0.00 2138.50
1981 0.00 0.00 10.50 108.00 88.00 422.00 512.00 407.50 173.00 17.00 3.50 0.00 1741.50
1982 0.00 0.00 25.00 15.50 270.00 256.00 498.50 373.00 180.00 69.50 7.00 13.00 1707.50
1983 0.00 0.00 6.00 17.50 115.50 383.00 597.50 621.00 298.00 36.50 0.50 0.00 2075.50
1984 0.00 0.00 0.00 30.50 106.00 496.50 446.00 416.00 189.50 75.00 0.00 0.00 1759.50
1985 0.00 1.00 14.00 107.50 187.50 348.00 488.00 321.50 200.00 59.00 4.50 0.00 1731.00
1986 0.00 0.00 14.50 71.50 229.00 424.00 534.50 305.50 302.50 40.50 0.00 0.00 1922.00
1987 0.00 0.00 2.50 58.00 342.50 448.50 508.00 521.00 228.00 0.00 z 0.00 z 0.00 z 2108.50
1988 0.00 z 0.00 z 0.00 z 0.00 z 82.50 319.50 424.50 469.00 152.00 18.00 0.00 0.00 1465.50
1989 0.00 0.00 9.50 67.50 81.50 0.00 z 411.00 363.50 143.50 22.73 a 2.00 0.00 1101.23
1990 0.00 z 0.00 13.50 40.50 53.50 327.50 410.50 310.50 236.50 13.50 0.00 0.00 1406.00
1991 0.00 0.00 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
1992 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 224.50 424.50 270.50 145.00 0.00 0.00 0.00 1064.50
1993 0.00 0.00 1.50 10.00 121.50 313.50 551.00 454.50 152.50 26.00 3.00 0.00 1633.50
1994 0.00 0.00 3.00 35.50 60.50 i 376.00 398.50 281.50 110.00 27.00 3.50 0.00 1235.00
1995 0.00 0.00 1.50 37.50 126.50 279.00 429.00 502.50 189.00 100.50 0.00 d 0.00 d 1665.50
1996 0.00 d 4.83 e 0.00 15.50 204.50 318.00 389.50 398.00 0.00 z 9.00 1.00 0.00 1340.33
1997 0.00 0.00 0.00 0.00 62.57 d 262.00 464.50 359.00 185.00 79.50 0.00 0.00 1412.57
1998 0.00 c 0.00 29.00 11.00 236.00 374.00 460.00 403.00 327.50 52.00 0.00 0.50 1893.00
1999 0.00 0.00 0.00 35.50 98.50 322.50 516.00 377.00 194.00 25.00 2.00 0.00 1570.50
2000 0.00 1.50 5.00 5.50 141.00 291.00 397.50 441.50 206.50 65.00 0.00 0.00 1554.50
2001 0.00 0.00 0.00 90.50 142.50 259.00 437.50 429.00 162.50 17.00 1.50 0.00 1539.50
2002 0.00 0.00 0.00 73.50 118.50 399.00 505.00 448.00 261.00 53.00 2.00 0.00 1860.00
2003 0.00 0.00 0.00 46.50 93.00 213.50 425.00 426.00 116.50 14.00 8.00 0.00 1342.50
2004 0.00 0.00 14.00 35.00 223.00 283.00 375.00 251.62 a 170.00 36.00 6.00 0.00 1393.62
2005 0.00 0.00 0.00 23.00 104.50 322.50 412.50 463.50 266.00 52.50 9.50 0.00 1654.00
2006 0.00 0.00 9.50 69.50 106.50 318.00 418.50 440.50 102.00 27.00 0.00 0.00 1491.50
2007 0.00 0.00 31.00 30.00 197.00 324.50 356.00 545.50 272.50 111.50 0.00 0.00 1868.00
2008 0.00 0.00 a 0.00 16.50 68.50 370.00 424.50 331.00 202.50 40.00 0.00 0.00 1453.00
2009 0.00 e 0.00 f 1.50 47.00 109.00 378.50 326.00 313.00 221.50 1.50 0.00 0.00 1398.00
2010 0.00 0.00 0.00 59.00 l 13.50 z 0.00 z 192.50 u 531.50 208.50 40.00 0.00 0.00 780.00
2011 0.00 0.00 b 0.00 a 30.52 a 135.37 a 394.20 e 378.00 j 501.17 a 171.50 24.50 8.04 b 0.00 c 1265.29
2012 0.00 c 0.00 b 49.50 91.80 e 281.58 a 299.00 591.21 c 389.50 163.00 7.50 l 0.00 z 0.00 z 1865.60
Period of Record Statistics
MEAN 0.17 0.19 6.43 46.16 163.73 359.22 473.21 418.80 213.67 48.88 3.13 0.31 1760.33
S.D. 1.11 0.79 9.98 29.36 73.53 73.42 67.52 76.53 63.69 33.40 4.01 1.70 222.30
SKEW 7.09 4.83 2.28 0.67 0.69 0.60 0.22 -0.02 0.28 0.76 1.64 6.96 0.17
MAX 8.50 4.83 49.50 114.00 378.50 607.00 643.00 621.00 346.00 159.50 19.50 13.00 2307.00
MIN 0.00 0.00 0.00 0.00 53.50 213.50 326.00 251.62 93.50 0.00 0.00 0.00 1342.50
NO YRS 61 61 61 60 60 62 62 64 63 62 62 62 52