ROCK RAPIDS, IOWA

Monthly Total Cooling Degree Days

(137147)

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
1893 0.00 z 0.00 z 0.00 z 0.00 w 5.00 196.50 305.35 a 160.00 101.50 0.00 0.00 0.00 768.35
1894 0.00 0.00 0.00 a 7.50 39.50 249.50 377.00 251.00 92.00 5.00 0.00 0.00 1021.50
1895 0.00 a 0.00 0.00 5.00 65.00 58.50 208.50 167.50 158.00 0.00 0.00 a 0.00 662.50
1896 0.00 0.00 0.00 a 2.50 j 27.50 127.50 d 199.00 199.95 a 2.00 0.00 0.00 b 0.00 555.95
1897 0.00 0.00 0.00 0.00 a 6.20 a 147.50 241.00 71.00 191.50 24.80 a 0.00 i 0.00 682.00
1898 0.00 0.00 z 0.00 b 0.00 19.00 0.00 z 153.97 a 0.00 z 0.00 z 0.00 0.00 z 0.00 172.97
1899 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
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 0.00 0.00 0.00 21.50 93.50 148.50 106.00 24.00 1.00 0.00 0.00 394.50
1905 0.00 0.00 0.00 a 0.00 1.00 118.50 169.50 296.00 126.00 28.00 0.00 0.00 739.00
1906 0.00 0.00 0.00 0.00 0.00 z 82.00 180.00 236.00 110.00 0.00 0.00 0.00 608.00
1907 0.00 0.00 0.00 0.00 10.00 76.00 193.00 173.00 51.50 0.00 0.00 0.00 503.50
1908 0.00 0.00 0.00 0.00 18.50 83.00 291.00 164.00 215.00 0.00 z 0.00 z 0.00 z 771.50
1909 0.00 0.00 0.00 0.00 5.00 138.50 275.00 387.50 48.00 15.50 0.00 0.00 869.50
1910 0.00 0.00 2.50 20.17 a 0.00 z 253.50 j 314.50 231.98 a 37.50 5.17 a 0.00 0.00 611.82
1911 0.00 0.00 0.00 2.00 118.50 327.50 257.00 150.00 55.00 0.00 0.00 0.00 910.00
1912 0.00 0.00 a 0.00 0.00 33.00 102.00 249.50 104.00 78.50 0.00 0.00 0.00 567.00
1913 0.00 z 0.00 0.00 3.50 19.00 0.00 z 0.00 z 292.84 c 164.00 0.00 0.00 0.00 479.34
1914 0.00 0.00 a 0.00 z 3.00 64.50 160.00 366.50 216.00 31.00 3.50 0.00 0.00 844.50
1915 0.00 0.00 z 0.00 7.50 20.50 58.50 125.03 a 67.00 19.50 0.00 0.00 0.00 298.03
1916 0.00 0.00 0.00 0.00 34.00 52.50 427.50 246.50 75.00 5.50 0.00 0.00 841.00
1917 0.00 0.00 0.00 0.00 26.00 67.50 240.50 143.00 29.00 0.00 0.00 0.00 506.00
1918 0.00 0.00 0.00 0.00 64.50 159.00 217.50 224.50 2.59 a 2.00 0.00 0.00 670.09
1919 0.00 0.00 0.00 0.00 40.00 223.00 333.50 154.00 56.50 1.50 0.00 0.00 a 808.50
1920 0.00 0.00 0.00 0.00 19.50 191.00 207.50 86.00 79.00 8.50 0.00 0.00 591.50
1921 0.00 0.00 0.00 6.00 81.50 290.50 339.00 191.00 49.00 0.00 0.00 0.00 957.00
1922 0.00 0.00 0.00 a 0.00 35.50 199.50 160.00 238.50 111.50 21.00 0.00 0.00 766.00
1923 0.00 0.00 0.00 0.50 30.50 198.50 328.50 123.50 43.00 0.00 0.00 0.00 724.50
1924 0.00 0.00 0.00 7.00 8.50 90.00 164.50 175.50 6.00 7.50 0.00 0.00 459.00
1925 0.00 0.00 0.00 13.50 71.50 145.50 250.00 266.00 146.50 0.00 0.00 a 0.00 893.00
1926 0.00 0.00 0.00 3.50 114.50 111.50 322.00 214.50 58.50 0.00 a 0.00 0.00 824.50
1927 0.00 0.00 0.00 0.00 15.50 124.50 143.50 91.50 165.50 0.00 0.00 0.00 540.50
1928 0.00 0.00 0.00 0.00 30.00 22.00 228.50 205.00 21.50 21.00 0.00 0.00 528.00
1929 0.00 0.00 0.00 0.00 32.50 82.00 257.00 201.00 44.50 0.00 0.00 0.00 617.00
1930 0.00 0.00 0.00 0.50 29.50 115.50 354.50 273.00 45.00 16.00 0.00 0.00 834.00
1931 0.00 0.00 0.00 3.00 55.50 335.50 320.50 238.50 205.50 10.00 0.00 0.00 1168.50
1932 0.00 0.00 0.00 0.00 48.00 172.50 310.52 a 214.50 14.50 0.00 0.00 0.00 760.02
1933 0.00 0.00 0.00 0.00 31.00 348.50 319.00 123.00 114.50 0.00 0.00 a 0.00 936.00
1934 0.00 0.00 0.00 14.00 222.50 217.00 321.50 209.50 25.00 3.50 0.00 a 0.00 1013.00
1935 0.00 0.00 0.00 0.00 0.00 86.50 455.00 296.50 90.00 4.50 0.00 0.00 932.50
1936 0.00 0.00 0.00 0.00 87.32 a 172.50 560.50 389.50 132.93 a 0.00 a 0.00 0.00 1342.75
1937 0.00 0.00 0.00 0.00 35.00 128.79 a 336.00 373.50 113.50 0.50 0.00 a 0.00 987.29
1938 0.00 0.00 0.00 2.50 23.00 127.50 314.50 330.00 107.00 31.50 0.00 0.00 936.00
1939 0.00 0.00 0.00 9.50 110.50 168.00 322.00 167.40 a 182.00 1.00 0.00 0.00 960.40
1940 0.00 0.00 0.00 0.00 a 25.50 151.50 343.50 166.00 156.50 9.00 0.00 0.00 852.00
1941 0.00 0.00 0.00 4.00 120.00 149.50 295.00 292.95 a 111.00 0.00 a 0.00 0.00 972.45
1942 0.00 0.00 0.00 10.50 34.00 116.00 226.00 212.50 39.50 0.00 0.00 0.00 638.50
1943 0.00 0.00 4.50 0.00 40.50 186.50 291.50 241.50 30.50 0.00 a 0.00 0.00 795.00
1944 0.00 0.00 0.00 0.00 105.00 182.50 197.00 203.50 31.00 0.00 0.00 0.00 719.00
1945 0.00 0.00 0.00 0.50 8.50 60.50 207.00 229.00 82.50 1.50 0.00 0.00 589.50
1946 0.00 0.00 0.00 3.50 3.50 177.41 a 262.00 148.50 41.50 0.00 0.00 0.00 636.41
1947 0.00 0.00 0.00 0.00 2.50 71.00 256.27 a 450.50 169.50 26.00 0.00 0.00 a 975.77
1948 0.00 0.00 0.00 7.00 31.00 81.00 265.50 252.50 128.50 0.00 0.00 0.00 765.50
1949 0.00 0.00 0.00 4.50 61.00 198.00 313.50 248.00 a 4.00 0.00 0.00 0.00 829.00
1950 0.00 0.00 0.00 0.00 15.50 147.50 109.00 111.17 b 31.00 7.00 0.00 0.00 421.17
1951 0.00 a 0.00 0.00 0.50 16.00 48.00 194.00 140.00 2.50 12.50 0.00 0.00 413.50
1952 0.00 0.00 0.00 3.00 24.50 220.50 269.00 166.00 92.50 0.00 0.00 0.00 775.50
1953 0.00 0.00 0.00 0.00 b 41.50 220.00 255.50 237.00 57.50 17.50 0.00 0.00 829.00
1954 0.00 0.00 0.00 4.50 19.00 204.00 341.50 182.50 51.21 a 0.00 0.00 0.00 802.71
1955 0.00 0.00 0.00 2.50 51.67 a 109.00 413.33 a 391.50 127.50 8.78 a 0.00 0.00 1104.28
1956 0.00 0.00 0.00 0.00 68.50 314.00 185.00 216.50 49.50 20.00 0.00 0.00 853.50
1957 0.00 0.00 0.00 1.00 22.00 98.00 406.50 196.00 18.50 0.00 0.00 0.00 742.00
1958 0.00 0.00 0.00 0.00 65.00 83.00 166.50 316.00 90.50 15.50 0.00 0.00 736.50
1959 0.00 0.00 0.00 0.00 55.50 250.00 263.50 328.50 89.50 0.00 0.00 0.00 987.00
1960 0.00 0.00 a 0.00 11.00 18.50 70.50 254.00 246.50 98.00 2.50 0.00 0.00 701.00
1961 0.00 0.00 0.00 0.00 19.50 142.00 220.10 a 238.00 68.50 0.00 0.00 0.00 688.10
1962 0.00 0.00 0.00 14.50 74.50 112.50 198.00 199.00 22.00 17.00 0.00 0.00 637.50
1963 0.00 0.00 0.00 8.50 41.00 259.00 307.50 216.50 75.50 18.50 0.00 0.00 926.50
1964 0.00 0.00 0.00 3.00 88.00 185.50 362.50 145.00 57.50 0.00 0.00 0.00 841.50
1965 0.00 0.00 0.00 2.50 45.00 134.00 246.00 194.00 18.00 8.50 0.00 0.00 m 648.00
1966 0.00 0.00 0.00 0.00 23.00 152.50 388.50 143.50 37.50 2.50 0.00 0.00 b 747.50
1967 0.00 0.00 5.17 a 3.50 44.95 a 83.00 237.00 167.00 34.14 a 9.62 b 0.00 a 0.00 a 584.38
1968 0.00 0.00 0.00 0.00 8.50 217.00 221.50 270.50 32.50 16.00 0.00 0.00 a 766.00
1969 0.00 a 0.00 0.00 0.00 64.50 67.50 0.00 z 200.00 f 38.50 7.00 0.00 0.00 177.50
1970 0.00 0.00 0.00 14.50 59.50 193.50 298.00 220.50 97.50 4.50 0.00 0.00 888.00
1971 0.00 0.00 0.00 5.00 4.50 259.00 175.00 199.00 69.50 11.50 0.00 0.00 723.50
1972 0.00 0.00 0.00 0.00 78.50 133.00 198.50 205.50 37.00 0.00 0.00 0.00 652.50
1973 0.00 0.00 0.00 0.00 13.50 177.50 263.50 289.00 33.00 7.50 0.00 z 0.00 784.00
1974 0.00 0.00 0.00 2.50 24.00 143.00 404.50 0.00 z 19.50 1.00 0.00 0.00 594.50
1975 0.00 0.00 0.00 0.00 59.50 111.50 312.77 c 239.50 32.50 9.00 0.00 0.00 764.77
1976 0.00 0.00 0.00 4.00 27.00 189.50 376.50 290.88 a 90.00 4.00 0.00 0.00 z 981.88
1977 0.00 0.00 0.00 21.50 118.00 193.50 345.50 128.13 a 43.50 0.00 0.00 b 0.00 850.13
1978 0.00 0.00 z 0.00 0.00 54.50 189.31 a 266.00 222.17 a 161.25 b 0.00 0.00 0.00 a 893.23
1979 0.00 0.00 0.00 2.07 a 23.00 161.90 a 280.50 161.50 71.50 0.00 0.00 0.00 a 700.47
1980 0.00 0.00 0.00 a 13.00 71.50 169.14 a 317.50 191.00 58.50 5.50 0.00 0.00 826.14
1981 0.00 0.00 0.00 b 6.72 a 17.50 147.93 a 281.58 a 164.50 37.50 0.00 0.00 0.00 655.74
1982 0.00 0.00 z 0.00 0.00 29.50 55.00 316.50 210.50 37.00 0.00 0.00 0.00 648.50
1983 0.00 0.00 0.00 0.00 11.00 131.00 384.50 407.50 102.00 8.00 0.00 0.00 1044.00
1984 0.00 0.00 0.00 0.00 8.00 151.50 243.50 270.50 32.50 0.50 0.00 0.00 706.50
1985 0.00 0.00 0.00 k 28.00 57.00 101.00 231.00 89.50 87.50 0.00 0.00 0.00 594.00
1986 0.00 0.00 0.00 0.00 30.00 217.00 328.00 105.50 17.00 0.00 0.00 0.00 697.50
1987 0.00 0.00 0.00 16.50 22.00 n 241.50 340.50 176.00 25.50 0.00 0.00 0.00 800.00
1988 0.00 0.00 0.00 0.00 84.00 337.00 303.00 293.00 45.50 0.00 0.00 0.00 1062.50
1989 0.00 0.00 0.00 9.00 31.50 129.00 345.00 199.00 48.50 4.50 0.00 0.00 766.50
1990 0.00 0.00 0.00 22.50 7.50 193.50 215.00 179.50 138.50 0.50 0.00 0.00 757.00
1991 0.00 0.00 0.00 13.50 118.00 238.00 224.50 194.00 82.50 2.50 0.00 0.00 873.00
1992 0.00 0.00 0.00 0.00 36.50 81.00 49.50 67.00 19.00 0.50 0.00 0.00 253.50
1993 0.00 0.00 0.00 0.00 3.00 70.50 171.00 194.00 6.00 5.50 0.00 0.00 450.00
1994 0.00 0.00 0.00 14.50 82.00 180.50 131.00 114.50 73.50 0.00 0.00 0.00 596.00
1995 0.00 0.00 0.00 0.00 0.00 177.00 258.50 300.50 37.50 3.50 0.00 0.00 777.00
1996 0.00 0.00 0.00 0.00 30.00 183.50 155.00 143.00 56.00 0.00 0.00 0.00 567.50
1997 0.00 0.00 0.00 0.00 5.50 178.00 287.50 188.00 73.00 33.50 0.00 0.00 765.50
1998 0.00 0.00 0.00 0.00 79.50 118.00 249.00 214.50 133.50 0.00 0.00 0.00 794.50
1999 0.00 0.00 0.00 0.00 19.00 144.50 329.00 173.00 56.00 0.50 0.00 0.00 a 722.00
2000 0.00 0.00 0.00 0.00 40.00 117.41 a 261.00 224.23 a 63.50 3.00 0.00 0.00 709.15
2001 0.00 0.00 0.00 9.50 39.50 160.00 328.08 a 232.00 39.00 2.00 0.00 0.00 810.08
2002 0.00 0.00 0.00 14.50 37.00 251.00 388.00 209.50 104.00 2.50 0.00 0.00 1006.50
2003 0.00 0.00 0.00 15.00 10.00 143.00 277.50 279.50 45.50 9.50 0.00 0.00 780.00
2004 0.00 0.00 0.00 1.50 39.50 90.50 208.50 96.50 119.00 1.50 0.00 0.00 557.00
2005 0.00 0.00 0.00 2.50 35.00 215.00 305.50 199.50 129.00 22.50 0.00 0.00 909.00
2006 0.00 0.00 0.00 8.00 73.00 169.50 357.50 213.50 20.00 21.50 0.00 0.00 863.00
2007 0.00 0.00 0.00 12.50 85.00 186.00 307.00 243.50 97.00 25.50 0.00 0.00 956.50
2008 0.00 0.00 0.00 0.00 1.00 111.00 262.00 180.00 51.50 0.00 0.00 0.00 605.50
2009 0.00 0.00 0.00 3.00 39.50 152.00 122.50 122.50 38.00 0.00 0.00 0.00 477.50
2010 0.00 0.00 0.00 4.00 77.00 143.00 277.00 306.00 18.00 3.50 0.00 0.00 828.50
2011 0.00 0.00 a 0.00 0.00 31.00 129.44 c 397.32 a 175.50 46.50 25.50 0.00 0.00 805.26
2012 0.00 a 0.00 a 12.00 10.50 66.50 239.00 443.00 216.50 74.50 0.00 0.00 0.00 1062.00
2013 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
Period of Record Statistics
MEAN 0.00 0.00 0.22 3.96 42.10 155.74 274.34 210.09 69.98 5.58 0.00 0.00 769.37
S.D. 0.00 0.00 1.32 5.92 34.86 67.69 83.22 74.92 48.63 8.24 0.00 0.00 183.84
SKEW 0.00 0.00 7.35 1.74 1.74 0.64 0.19 0.62 0.91 1.62 0.00 0.00 -0.01
MAX 0.00 0.00 12.00 28.00 222.50 348.50 560.50 450.50 215.00 33.50 0.00 0.00 1342.75
MIN 0.00 0.00 0.00 0.00 0.00 22.00 49.50 67.00 2.00 0.00 0.00 0.00 253.50
NO YRS 115 112 112 113 112 112 113 112 114 114 111 112 96