FLANDREAU, SOUTH DAKOTA

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(392984)

File last updated on Apr 4, 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.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
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 39.00 39.00 65.00 79.00 89.00 96.00 100.00 97.00 99.00 73.00 73.00 47.00 100.00
1894 42.00 42.00 80.00 90.00 96.00 102.00 109.00 104.00 99.00 80.00 58.00 53.00 109.00
1895 33.00 64.00 78.00 89.00 92.00 89.00 96.00 99.00 104.00 75.00 71.00 39.00 104.00
1896 54.00 63.00 52.00 85.00 94.00 92.00 103.00 100.00 94.00 85.00 b 53.00 49.00 103.00
1897 41.00 42.00 53.00 88.00 90.00 93.00 98.00 90.00 95.00 94.00 78.00 44.00 98.00
1898 44.00 59.00 65.00 91.00 87.00 90.00 97.00 103.00 99.00 83.00 63.00 50.00 103.00
1899 49.00 56.00 56.00 88.00 88.00 94.00 96.00 100.00 95.00 83.00 64.00 56.00 100.00
1900 60.00 ----- z 70.00 82.00 93.00 92.00 95.00 a 96.00 90.00 83.00 69.00 44.00 96.00
1901 45.00 49.00 66.00 90.00 89.00 93.00 102.00 100.00 92.00 82.00 65.00 44.00 102.00
1902 56.00 55.00 65.00 84.00 85.00 89.00 94.00 88.00 88.00 77.00 57.00 40.00 94.00
1903 42.00 41.00 62.00 75.00 79.00 82.00 90.00 89.00 86.00 80.00 71.00 42.00 90.00
1904 36.00 38.00 66.00 79.00 86.00 83.00 90.00 92.00 89.00 80.00 77.00 47.00 92.00
1905 37.00 51.00 78.00 78.00 81.00 93.00 95.00 96.00 89.00 86.00 64.00 48.00 96.00
1906 53.00 59.00 54.00 91.00 95.00 90.00 88.00 96.00 94.00 80.00 59.00 50.00 96.00
1907 37.00 a 53.00 a 75.00 68.00 90.00 90.00 93.00 96.00 86.00 80.00 a 59.00 46.00 c 96.00
1908 45.00 c 43.00 70.00 c 90.00 87.00 86.00 93.00 92.00 95.00 81.00 70.00 48.00 95.00
1909 42.00 44.00 57.00 78.00 95.00 86.00 92.00 92.00 b 83.00 85.00 79.00 44.00 f 95.00
1910 37.00 45.00 84.00 94.00 80.00 92.00 a 96.00 e 92.00 88.00 93.00 ----- z 53.00 96.00
1911 51.00 46.00 74.00 78.00 93.00 b 101.00 101.00 91.00 96.00 b 69.00 48.00 48.00 101.00
1912 39.00 48.00 a 60.00 81.00 a 82.00 95.00 96.00 93.00 93.00 86.00 71.00 55.00 96.00
1913 53.00 64.00 64.00 87.00 90.00 94.00 93.00 a 95.00 98.00 ----- z ----- z ----- z 98.00
1914 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z 50.00 k 81.00 87.00 83.00 89.00 86.00 82.00 77.00 68.00 a 46.00 89.00
1916 37.00 42.00 63.00 76.00 91.00 87.00 95.00 95.00 94.00 84.00 70.00 54.00 95.00
1917 45.00 40.00 66.00 73.00 87.00 92.00 a 100.00 a 92.00 83.00 71.00 72.00 51.00 100.00
1918 45.00 57.00 77.00 a 68.00 91.00 95.00 96.00 94.00 a 85.00 83.00 63.00 b 56.00 96.00
1919 52.00 c 38.00 d 69.00 70.00 94.00 b 90.00 a 93.00 b 94.00 a 90.00 b 80.00 52.00 43.00 94.00
1920 55.00 40.00 73.00 58.00 84.00 91.00 97.00 90.00 91.00 81.00 54.00 b 47.00 97.00
1921 52.00 d 61.00 80.00 79.00 90.00 97.00 97.00 95.00 a 89.00 a 81.00 e 62.00 a 58.00 97.00
1922 43.00 a 37.00 56.00 74.00 b 82.00 a 95.00 a 91.00 95.00 a 100.00 90.00 56.00 b 65.00 100.00
1923 59.00 50.00 63.00 85.00 83.00 90.00 d ----- z 93.00 a ----- z 83.00 e 71.00 c ----- z 93.00
1924 ----- z ----- z 67.00 ----- z 95.00 86.00 88.00 91.00 e 77.00 i 89.00 75.00 a 52.00 95.00
1925 40.00 52.00 73.00 84.00 96.00 90.00 100.00 96.00 103.00 66.00 68.00 50.00 103.00
1926 40.00 60.00 a 72.00 88.00 97.00 100.00 104.00 98.00 90.00 75.00 65.00 43.00 104.00
1927 45.00 49.00 66.00 85.00 83.00 98.00 90.00 98.00 96.00 85.00 71.00 34.00 98.00
1928 44.00 44.00 85.00 64.00 82.00 78.00 89.00 97.00 a 91.00 89.00 58.00 51.00 e 97.00
1929 43.00 38.00 63.00 85.00 84.00 93.00 95.00 98.00 92.00 a 80.00 55.00 49.00 98.00
1930 48.00 65.00 70.00 86.00 84.00 94.00 109.00 106.00 89.00 84.00 78.00 52.00 109.00
1931 ----- z ----- z ----- z 88.00 93.00 105.00 104.00 100.00 103.00 82.00 76.00 45.00 105.00
1932 35.00 55.00 61.00 74.00 94.00 91.00 101.00 97.00 88.00 83.00 62.00 53.00 101.00
1933 49.00 52.00 63.00 79.00 91.00 104.00 101.00 93.00 93.00 82.00 70.00 52.00 104.00
1934 53.00 56.00 70.00 92.00 106.00 100.00 a 107.00 105.00 86.00 85.00 71.00 40.00 107.00
1935 48.00 52.00 70.00 72.00 73.00 86.00 103.00 96.00 95.00 76.00 64.00 43.00 103.00
1936 35.00 39.00 62.00 82.00 92.00 101.00 110.00 108.00 97.00 83.00 56.00 45.00 110.00
1937 32.00 43.00 61.00 75.00 86.00 103.00 98.00 106.00 96.00 86.00 71.00 50.00 106.00
1938 41.00 40.00 67.00 83.00 85.00 97.00 98.00 99.00 92.00 88.00 z 70.00 50.00 99.00
1939 45.00 38.00 81.00 88.00 95.00 94.00 104.00 91.00 100.00 84.00 72.00 65.00 104.00
1940 37.00 47.00 56.00 80.00 89.00 97.00 112.00 96.00 96.00 83.00 63.00 43.00 112.00
1941 40.00 37.00 61.00 77.00 95.00 94.00 102.00 a 100.00 93.00 77.00 65.00 61.00 102.00
1942 55.00 43.00 63.00 82.00 83.00 88.00 a 98.00 92.00 89.00 86.00 65.00 44.00 98.00
1943 40.00 58.00 87.00 80.00 94.00 95.00 95.00 93.00 87.00 83.00 58.00 51.00 95.00
1944 61.00 46.00 52.00 67.00 88.00 94.00 92.00 93.00 86.00 80.00 69.00 43.00 94.00
1945 45.00 50.00 71.00 78.00 83.00 90.00 96.00 93.00 93.00 87.00 68.00 41.00 96.00
1946 37.00 56.00 78.00 86.00 83.00 96.00 93.00 93.00 86.00 71.00 59.00 54.00 96.00
1947 59.00 46.00 71.00 78.00 79.00 87.00 a 100.00 101.00 93.00 90.00 52.00 41.00 101.00
1948 40.00 47.00 65.00 80.00 90.00 87.00 95.00 95.00 90.00 74.00 65.00 46.00 95.00
1949 48.00 45.00 56.00 81.00 92.00 93.00 97.00 95.00 85.00 77.00 74.00 50.00 97.00
1950 43.00 46.00 63.00 72.00 93.00 92.00 90.00 93.00 91.00 86.00 72.00 48.00 93.00
1951 44.00 49.00 42.00 79.00 81.00 g 86.00 a 92.00 93.00 86.00 86.00 58.00 51.00 93.00
1952 41.00 45.00 50.00 86.00 90.00 93.00 94.00 93.00 93.00 75.00 69.00 51.00 e 94.00
1953 42.00 42.00 62.00 a 79.00 90.00 97.00 94.00 92.00 94.00 90.00 73.00 39.00 a 97.00
1954 40.00 59.00 50.00 88.00 88.00 93.00 101.00 95.00 87.00 72.00 70.00 41.00 101.00
1955 40.00 a 43.00 65.00 80.00 89.00 89.00 104.00 102.00 97.00 83.00 a 63.00 40.00 104.00
1956 43.00 37.00 58.00 74.00 88.00 99.00 94.00 99.00 95.00 85.00 62.00 49.00 99.00
1957 35.00 49.00 62.00 80.00 85.00 88.00 104.00 95.00 90.00 79.00 57.00 57.00 104.00
1958 57.00 70.00 56.00 84.00 90.00 96.00 91.00 99.00 95.00 90.00 71.00 53.00 99.00
1959 47.00 39.00 69.00 85.00 96.00 100.00 96.00 95.00 95.00 74.00 60.00 49.00 100.00
1960 38.00 39.00 48.00 90.00 85.00 a 86.00 95.00 98.00 93.00 81.00 67.00 55.00 98.00
1961 41.00 46.00 67.00 80.00 87.00 96.00 c 92.00 95.00 91.00 85.00 61.00 56.00 96.00
1962 49.00 55.00 46.00 94.00 86.00 b 89.00 93.00 94.00 84.00 82.00 72.00 c 62.00 94.00
1963 55.00 58.00 79.00 84.00 88.00 99.00 94.00 93.00 90.00 91.00 62.00 53.00 99.00
1964 51.00 54.00 54.00 91.00 a 93.00 j 95.00 100.00 98.00 90.00 79.00 70.00 42.00 100.00
1965 41.00 48.00 47.00 85.00 87.00 87.00 97.00 102.00 84.00 75.00 72.00 50.00 102.00
1966 44.00 49.00 72.00 73.00 92.00 95.00 104.00 94.00 88.00 84.00 57.00 44.00 104.00
1967 46.00 51.00 80.00 a 80.00 99.00 85.00 100.00 93.00 85.00 85.00 66.00 51.00 100.00
1968 43.00 39.00 82.00 83.00 a 86.00 99.00 95.00 97.00 86.00 76.00 70.00 51.00 a 99.00
1969 37.00 39.00 46.00 73.00 b 93.00 89.00 95.00 94.00 88.00 80.00 66.00 54.00 95.00
1970 36.00 45.00 47.00 83.00 91.00 97.00 96.00 97.00 101.00 84.00 56.00 55.00 101.00
1971 39.00 47.00 65.00 80.00 84.00 98.00 91.00 103.00 96.00 78.00 66.00 35.00 103.00
1972 36.00 43.00 56.00 77.00 88.00 89.00 91.00 95.00 97.00 78.00 60.00 48.00 97.00
1973 44.00 48.00 a 64.00 75.00 86.00 95.00 93.00 105.00 87.00 78.00 64.00 50.00 105.00
1974 52.00 51.00 67.00 80.00 85.00 100.00 100.00 92.00 90.00 84.00 64.00 51.00 100.00
1975 40.00 38.00 60.00 62.00 90.00 90.00 96.00 92.00 90.00 83.00 73.00 42.00 96.00
1976 42.00 57.00 71.00 80.00 84.00 95.00 103.00 98.00 100.00 86.00 68.00 51.00 103.00
1977 36.00 60.00 68.00 ----- z 88.00 95.00 98.00 87.00 a 88.00 74.00 61.00 45.00 98.00
1978 27.00 37.00 85.00 71.00 87.00 97.00 93.00 98.00 95.00 c 78.00 76.00 a 39.00 98.00
1979 25.00 37.00 a 44.00 75.00 88.00 99.00 90.00 88.00 88.00 77.00 65.00 57.00 99.00
1980 54.00 38.00 a 60.00 93.00 88.00 91.00 98.00 94.00 94.00 89.00 67.00 51.00 98.00
1981 64.00 65.00 68.00 88.00 85.00 97.00 95.00 92.00 90.00 70.00 65.00 40.00 97.00
1982 38.00 56.00 57.00 79.00 85.00 89.00 99.00 95.00 86.00 74.00 58.00 57.00 99.00
1983 42.00 46.00 64.00 72.00 85.00 92.00 99.00 97.00 95.00 81.00 60.00 26.00 99.00
1984 42.00 44.00 46.00 78.00 82.00 85.00 95.00 99.00 96.00 74.00 68.00 55.00 99.00
1985 43.00 53.00 67.00 91.00 89.00 94.00 96.00 90.00 85.00 74.00 63.00 38.00 96.00
1986 45.00 43.00 78.00 74.00 84.00 92.00 93.00 91.00 83.00 78.00 55.00 49.00 93.00
1987 58.00 61.00 76.00 88.00 92.00 95.00 96.00 96.00 87.00 85.00 62.00 45.00 96.00
1988 40.00 44.00 72.00 83.00 88.00 105.00 98.00 103.00 89.00 76.00 63.00 51.00 105.00
1989 55.00 51.00 75.00 83.00 85.00 96.00 102.00 89.00 87.00 84.00 60.00 48.00 102.00
1990 56.00 56.00 66.00 87.00 85.00 95.00 102.00 92.00 96.00 81.00 74.00 57.00 102.00
1991 41.00 59.00 75.00 86.00 87.00 92.00 99.00 98.00 91.00 84.00 54.00 44.00 99.00
1992 48.00 52.00 66.00 82.00 90.00 86.00 82.00 89.00 81.00 88.00 49.00 40.00 90.00
1993 39.00 40.00 50.00 68.00 78.00 85.00 88.00 90.00 88.00 85.00 54.00 42.00 90.00
1994 37.00 a 44.00 69.00 85.00 86.00 94.00 87.00 90.00 87.00 71.00 65.00 41.00 94.00
1995 35.00 47.00 70.00 63.00 76.00 95.00 100.00 92.00 83.00 82.00 50.00 52.00 100.00
1996 50.00 58.00 64.00 77.00 90.00 93.00 ----- z 89.00 84.00 81.00 63.00 32.00 93.00
1997 39.00 41.00 67.00 75.00 85.00 97.00 92.00 90.00 89.00 91.00 55.00 47.00 97.00
1998 51.00 56.00 73.00 80.00 91.00 88.00 92.00 93.00 91.00 74.00 64.00 63.00 93.00
1999 38.00 56.00 72.00 70.00 83.00 88.00 97.00 92.00 85.00 81.00 78.00 52.00 97.00
2000 49.00 68.00 76.00 78.00 87.00 98.00 96.00 92.00 88.00 83.00 69.00 37.00 98.00
2001 42.00 38.00 44.00 86.00 93.00 95.00 90.00 93.00 87.00 ----- z 74.00 47.00 95.00
2002 59.00 64.00 54.00 88.00 91.00 97.00 98.00 96.00 94.00 82.00 64.00 55.00 98.00
2003 55.00 50.00 74.00 86.00 81.00 90.00 91.00 96.00 92.00 86.00 61.00 44.00 96.00
2004 50.00 44.00 72.00 92.00 91.00 92.00 89.00 87.00 87.00 75.00 70.00 56.00 92.00
2005 49.00 62.00 70.00 78.00 81.00 92.00 97.00 90.00 90.00 85.00 72.00 42.00 97.00
2006 48.00 48.00 62.00 84.00 94.00 88.00 98.00 99.00 82.00 86.00 75.00 52.00 99.00
2007 40.00 46.00 72.00 84.00 89.00 88.00 99.00 93.00 87.00 87.00 61.00 35.00 99.00
2008 40.00 37.00 53.00 75.00 81.00 84.00 94.00 86.00 86.00 72.00 72.00 43.00 94.00
2009 35.00 54.00 70.00 89.00 ----- z 90.00 83.00 89.00 83.00 66.00 67.00 51.00 90.00
2010 36.00 34.00 79.00 79.00 90.00 89.00 94.00 90.00 86.00 86.00 71.00 42.00 94.00
2011 36.00 45.00 55.00 72.00 87.00 97.00 95.00 93.00 90.00 85.00 62.00 54.00 a 97.00
2012 61.00 51.00 83.00 89.00 91.00 91.00 101.00 99.00 94.00 81.00 65.00 54.00 101.00
2013 39.00 38.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 39.00
Period of Record Statistics
MEAN 44.37 48.56 65.44 80.75 88.06 92.70 96.30 94.94 90.79 81.18 65.11 48.12 98.94
S.D. 7.69 8.37 10.18 7.28 5.03 5.11 5.29 4.50 5.07 5.66 6.99 6.87 4.37
SKEW 0.40 0.43 -0.21 -0.53 0.09 0.00 0.30 0.54 0.38 -0.37 -0.23 -0.18 0.44
MAX 64.00 70.00 87.00 94.00 106.00 105.00 112.00 108.00 104.00 94.00 79.00 65.00 112.00
MIN 25.00 34.00 42.00 58.00 73.00 78.00 82.00 86.00 81.00 66.00 48.00 26.00 90.00
NO YRS 117 116 117 117 116 119 117 119 117 116 117 116 98