GRAND RAPIDS FRS LAB, MINNESOTA

Monthly Total Cooling Degree Days

(213303)

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
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7.50 b 28.00 42.50 26.90 a 0.00 0.00 0.00 104.90
1916 0.00 0.00 0.00 0.00 0.00 a 6.00 255.00 135.50 9.00 0.00 0.00 0.00 405.50
1917 0.00 0.00 0.00 0.00 1.50 31.03 a 199.50 47.50 5.50 0.00 0.00 0.00 a 285.03
1918 0.00 g 0.00 0.00 0.00 6.00 16.00 80.50 37.00 0.00 a 0.00 0.00 0.00 139.50
1919 0.00 0.00 0.00 0.00 25.50 120.00 85.50 41.50 14.00 0.00 0.00 0.00 286.50
1920 0.00 0.00 0.00 0.00 0.00 50.50 49.50 55.50 21.00 0.00 0.00 0.00 176.50
1921 0.00 0.00 0.00 0.00 38.00 161.50 260.50 84.00 30.50 0.00 0.00 0.00 574.50
1922 0.00 0.00 0.00 0.00 12.00 41.00 72.50 129.17 a 30.50 3.62 a 0.00 0.00 288.78
1923 0.00 0.00 0.00 0.00 13.50 113.50 184.00 31.00 15.50 1.00 0.00 0.00 358.50
1924 0.00 0.00 0.00 0.00 0.00 4.50 59.50 47.50 0.00 0.00 0.00 0.00 111.50
1925 0.00 0.00 0.00 0.00 31.00 57.00 103.00 136.50 24.00 0.00 0.00 0.00 351.50
1926 0.00 0.00 0.00 0.00 19.50 18.50 126.00 69.50 1.55 a 0.00 0.00 0.00 235.05
1927 0.00 0.00 0.00 0.00 0.00 61.50 90.00 25.83 a 56.25 b 0.00 0.00 a 0.00 233.58
1928 0.00 0.00 0.00 0.00 a 7.00 4.00 78.50 72.00 1.03 a 0.00 0.00 a 0.00 162.53
1929 0.00 0.00 0.00 0.00 16.50 41.00 121.50 56.50 44.00 0.00 0.00 0.00 279.50
1930 0.00 0.00 a 0.00 b 0.00 a 0.50 20.17 a 131.00 131.00 11.00 5.00 0.00 b 0.00 a 298.67
1931 0.00 0.00 a 0.00 a 0.00 7.50 115.00 152.00 67.50 72.50 0.00 0.00 0.00 b 414.50
1932 0.00 0.00 0.00 0.00 13.50 53.00 133.82 a 78.50 7.00 0.00 0.00 0.00 285.82
1933 0.00 0.00 0.00 0.00 a 2.00 150.00 146.22 a 44.43 a 34.00 0.00 0.00 a 0.00 376.65
1934 0.00 0.00 0.00 1.50 45.98 a 45.50 97.50 54.50 0.00 0.00 a 0.00 0.00 244.98
1935 0.00 0.00 0.00 0.00 0.00 4.00 203.50 102.00 7.50 0.00 a 0.00 u 0.00 a 317.00
1936 0.00 0.00 0.00 0.00 6.72 a 20.50 255.50 122.00 26.00 0.00 0.00 0.00 430.72
1937 0.00 0.00 0.00 0.00 a 18.00 32.00 144.15 a 184.00 26.50 0.00 a 0.00 a 0.00 404.65
1938 0.00 0.00 0.00 0.00 u 0.00 45.50 87.00 157.50 0.00 3.50 0.00 0.00 293.50
1939 0.00 0.00 b 0.00 0.00 18.50 38.50 135.07 c 85.00 57.50 0.00 0.00 0.00 334.57
1940 0.00 a 0.00 0.00 0.00 a 5.00 19.00 131.00 75.00 44.00 0.00 0.00 0.00 274.00
1941 0.00 0.00 0.00 a 0.00 22.00 105.50 164.50 74.83 b 30.50 0.00 0.00 0.00 397.33
1942 0.00 0.00 0.00 0.50 2.00 20.17 a 64.50 62.52 a 9.00 0.00 0.00 0.00 b 158.69
1943 0.00 0.00 0.00 0.00 0.50 69.00 149.50 50.12 a 7.00 0.00 0.00 0.00 276.12
1944 0.00 0.00 0.00 0.00 21.50 46.00 70.00 96.00 0.00 0.00 a 0.00 0.00 233.50
1945 0.00 0.00 0.00 a 0.00 0.00 a 24.50 74.50 61.50 30.50 0.00 0.00 0.00 191.00
1946 0.00 0.00 0.00 0.00 0.00 42.00 103.00 41.85 a 9.50 0.00 0.00 0.00 196.35
1947 0.00 0.00 0.00 0.00 0.00 13.50 152.50 204.50 42.00 0.52 a 0.00 0.00 413.02
1948 0.00 0.00 0.00 a 0.00 9.00 30.00 126.50 91.50 78.50 0.00 0.00 0.00 335.50
1949 0.00 0.00 0.00 0.00 6.50 67.50 109.50 162.75 a 0.00 0.00 0.00 0.00 346.25
1950 0.00 0.00 0.00 0.00 6.50 29.50 52.00 33.50 7.00 0.00 a 0.00 0.00 128.50
1951 0.00 0.00 0.00 0.00 11.00 10.50 92.48 a 18.82 c 0.00 1.50 0.00 0.00 134.30
1952 0.00 0.00 0.00 9.50 8.50 76.50 102.50 33.58 a 34.00 0.00 0.00 0.00 264.58
1953 0.00 0.00 0.00 0.00 1.50 61.00 75.00 88.00 16.55 a 7.00 0.00 0.00 249.05
1954 0.00 0.00 0.00 0.00 1.50 59.00 97.00 46.00 9.00 0.00 0.00 0.00 212.50
1955 0.00 0.00 0.00 0.00 15.00 47.00 198.00 140.53 a 15.00 0.00 0.00 0.00 a 415.53
1956 0.00 0.00 0.00 0.00 0.50 72.00 24.50 32.50 0.52 a 0.00 0.00 0.00 130.02
1957 0.00 0.00 0.00 2.00 0.00 7.00 165.50 55.50 9.50 0.00 0.00 0.00 239.50
1958 0.00 0.00 0.00 0.00 2.50 15.00 55.00 68.50 10.50 0.00 0.00 0.00 151.50
1959 0.00 a 0.00 0.00 0.00 13.00 63.50 114.00 127.00 13.00 0.00 0.00 a 0.00 330.50
1960 0.00 0.00 0.00 0.00 0.00 11.50 93.50 106.00 47.50 0.00 0.00 0.00 258.50
1961 0.00 0.00 0.00 0.00 5.00 77.50 80.50 119.00 46.00 0.00 0.00 0.00 328.00
1962 0.00 0.00 0.00 0.00 7.00 26.50 31.00 61.00 3.00 4.50 0.00 0.00 133.00
1963 0.00 0.00 0.00 0.00 0.00 83.50 137.00 59.50 1.50 3.00 0.00 0.00 284.50
1964 0.00 0.00 0.00 0.00 27.00 55.00 127.50 51.50 5.00 0.00 0.00 0.00 266.00
1965 0.00 0.00 0.00 0.00 0.00 20.50 54.50 59.00 0.00 0.00 0.00 0.00 134.00
1966 0.00 0.00 0.00 0.00 3.50 71.00 173.50 49.00 10.50 0.00 0.00 0.00 307.50
1967 0.00 0.00 0.00 0.00 0.00 26.00 78.50 55.50 6.00 0.00 0.00 0.00 166.00
1968 0.00 0.00 0.00 0.00 0.00 16.50 95.50 69.00 3.50 1.00 0.00 0.00 185.50
1969 0.00 0.00 0.00 0.00 16.50 10.50 100.50 145.50 22.00 0.00 0.00 0.00 295.00
1970 0.00 0.00 0.00 0.00 6.50 89.00 176.50 108.00 54.50 2.50 0.00 0.00 437.00
1971 0.00 0.00 0.00 0.00 0.00 96.00 39.50 56.00 43.00 0.50 0.00 0.00 235.00
1972 0.00 0.00 0.00 0.00 58.00 49.50 59.50 86.00 0.00 0.00 0.00 0.00 253.00
1973 0.00 0.00 0.00 0.00 0.00 37.50 98.00 116.50 19.50 0.00 0.00 0.00 271.50
1974 0.00 0.00 0.00 1.50 1.00 41.50 185.50 40.50 0.00 0.00 0.00 0.00 270.00
1975 0.00 0.00 0.00 0.00 8.00 57.00 221.50 66.50 1.00 0.00 0.00 0.00 354.00
1976 0.00 0.00 0.00 0.00 0.50 82.00 116.00 139.50 37.00 0.00 0.00 0.00 375.00
1977 0.00 0.00 0.00 2.00 74.50 43.50 150.00 5.50 0.00 0.00 0.00 0.00 275.50
1978 0.00 0.00 0.00 0.00 36.00 53.50 91.50 94.00 65.00 0.00 0.00 0.00 340.00
1979 0.00 0.00 0.00 0.00 4.50 32.50 122.00 32.50 20.50 0.00 0.00 0.00 212.00
1980 0.00 0.00 0.00 9.50 56.00 58.00 154.50 82.00 10.00 0.00 0.00 0.00 370.00
1981 0.00 0.00 0.00 0.00 5.50 10.50 124.50 84.00 6.00 0.00 0.00 0.00 230.50
1982 0.00 0.00 0.00 0.00 6.50 6.00 134.50 88.50 23.50 0.00 0.00 0.00 259.00
1983 0.00 0.00 0.00 0.00 0.00 64.00 207.00 164.00 42.50 0.00 0.00 0.00 477.50
1984 0.00 0.00 0.00 0.00 0.00 40.50 118.50 169.50 2.50 1.00 0.00 0.00 a 332.00
1985 0.00 0.00 0.00 0.00 7.50 8.00 87.50 29.50 5.50 0.00 0.00 0.00 138.00
1986 0.00 0.00 a 0.00 0.00 22.50 48.00 127.00 18.50 3.00 0.00 0.00 0.00 219.00
1987 0.00 0.00 0.00 6.50 22.00 115.00 172.00 66.00 3.50 0.00 0.00 0.00 385.00
1988 0.00 0.00 0.00 0.00 38.50 141.50 213.00 123.00 5.00 0.00 0.00 0.00 521.00
1989 0.00 0.00 0.00 0.00 10.00 51.00 178.50 95.00 12.00 3.50 0.00 0.00 350.00
1990 0.00 0.00 0.00 15.00 0.00 55.50 89.50 93.00 15.50 0.00 0.00 0.00 268.50
1991 0.00 0.00 0.00 1.00 66.50 95.00 106.00 156.50 13.00 0.00 0.00 0.00 438.00
1992 0.00 0.00 0.00 0.00 34.00 36.00 13.00 37.50 0.00 0.00 0.00 0.00 120.50
1993 0.00 0.00 0.00 0.00 6.00 39.00 67.00 100.50 0.00 0.00 0.00 0.00 a 212.50
1994 0.00 0.00 0.00 0.00 27.50 66.50 70.50 41.00 14.00 0.00 0.00 0.00 219.50
1995 0.00 0.00 0.00 0.00 3.00 188.50 106.00 132.00 26.00 1.00 0.00 0.00 456.50
1996 0.00 0.00 0.00 0.00 6.00 82.50 71.00 105.00 34.50 0.00 0.00 0.00 299.00
1997 0.00 a 0.00 0.00 0.00 0.50 93.00 125.50 61.00 16.50 3.00 0.00 0.00 299.50
1998 0.00 0.00 0.00 0.00 29.50 48.00 104.00 124.00 44.50 0.00 0.00 0.00 350.00
1999 0.00 0.00 0.00 0.00 16.00 84.50 194.00 80.00 22.50 0.00 0.00 0.00 397.00
2000 0.00 0.00 0.00 0.00 9.50 18.50 142.00 81.50 10.00 0.00 0.00 0.00 261.50
2001 0.00 0.00 0.00 2.50 7.00 94.50 173.50 151.50 28.00 0.00 0.00 0.00 457.00
2002 0.00 0.00 0.00 0.00 18.00 128.00 233.50 92.50 65.50 0.00 0.00 0.00 537.50
2003 0.00 0.00 0.00 2.00 0.00 45.00 147.00 203.00 41.50 5.50 0.00 0.00 444.00
2004 0.00 0.00 0.00 0.00 0.00 26.50 93.50 26.00 45.00 0.00 0.00 0.00 191.00
2005 0.00 0.00 0.00 0.00 1.00 57.00 175.00 99.00 33.00 0.00 0.00 0.00 365.00
2006 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 0.00 0.00 0.00
2007 0.00 0.00 0.00 0.00 21.00 112.50 180.50 87.00 22.00 0.00 0.00 0.00 423.00
2008 0.00 z 0.00 0.00 0.00 0.50 30.00 85.00 76.50 18.00 0.00 0.00 0.00 210.00
2009 0.00 0.00 0.00 0.00 0.00 57.50 13.50 52.00 32.50 0.00 0.00 0.00 155.50
2010 0.00 0.00 0.00 0.00 30.50 37.00 135.00 157.50 0.00 0.00 0.00 0.00 360.00
2011 0.00 0.00 0.00 0.00 0.00 28.50 211.00 98.50 23.00 4.00 0.00 0.00 365.00
2012 0.00 0.00 2.50 0.00 9.00 69.00 234.00 83.00 20.00 0.00 0.00 0.00 417.50
2013 0.00 0.00 0.00 j 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 0.03 0.56 11.58 53.11 122.88 84.34 19.71 0.53 0.00 0.00 296.94
S.D. 0.00 0.00 0.26 2.17 15.48 37.84 56.30 43.82 18.82 1.37 0.00 0.00 104.02
SKEW 0.00 0.00 9.64 4.88 1.96 1.12 0.40 0.68 1.03 2.82 0.00 0.00 0.26
MAX 0.00 0.00 2.50 15.00 74.50 188.50 260.50 204.50 78.50 7.00 0.00 0.00 574.50
MIN 0.00 0.00 0.00 0.00 0.00 4.00 13.00 5.50 0.00 0.00 0.00 0.00 111.50
NO YRS 96 98 96 95 96 97 97 97 97 98 97 98 92