ROCK RAPIDS, :

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(137147)

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.
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 ----- z ----- z ----- z 58.00 w 86.00 95.00 99.00 94.00 99.00 80.00 72.00 42.00 99.00
1894 41.00 46.00 80.00 84.00 95.00 100.00 106.00 100.00 90.00 80.00 60.00 54.00 106.00
1895 37.00 a 60.00 77.00 86.00 92.00 90.00 96.00 100.00 103.00 80.00 66.00 a 42.00 103.00
1896 54.00 70.00 62.00 a 82.00 j 88.00 94.00 101.00 99.00 a 86.00 78.00 52.00 a 48.00 101.00
1897 50.00 42.00 54.00 82.00 89.00 a 96.00 100.00 96.00 96.00 91.00 a 52.00 i 45.00 100.00
1898 45.00 ----- z 64.00 b 84.00 86.00 ----- z 94.00 a ----- z ----- z 74.00 ----- z 40.00 94.00
1899 44.00 60.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 60.00
1900 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1901 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1902 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1903 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.00 z ----- z ----- z ----- z 33.00
1904 40.00 49.00 60.00 75.00 92.00 92.00 92.00 90.00 88.00 78.00 70.00 58.00 92.00
1905 50.00 64.00 78.00 a 70.00 80.00 93.00 96.00 96.00 88.00 87.00 68.00 48.00 96.00
1906 54.00 60.00 64.00 82.00 ----- z 92.00 92.00 98.00 92.00 70.00 64.00 50.00 98.00
1907 40.00 60.00 76.00 70.00 92.00 94.00 98.00 94.00 86.00 80.00 60.00 50.00 98.00
1908 48.00 40.00 76.00 86.00 83.00 91.00 99.00 90.00 92.00 ----- z ----- z ----- z 99.00
1909 44.00 48.00 50.00 70.00 95.00 91.00 95.00 97.00 88.00 78.00 71.00 48.00 97.00
1910 38.00 42.00 85.00 85.00 a ----- z 96.00 i 95.00 96.00 a 92.00 85.00 a 56.00 50.00 96.00
1911 52.00 50.00 68.00 78.00 94.00 102.00 107.00 93.00 96.00 70.00 52.00 50.00 107.00
1912 38.00 38.00 a 62.00 81.00 84.00 98.00 98.00 98.00 96.00 70.00 67.00 45.00 98.00
1913 ----- z 60.00 65.00 85.00 92.00 ----- z ----- z 96.00 101.00 80.00 62.00 56.00 101.00
1914 54.00 38.00 a ----- z 85.00 90.00 93.00 98.00 95.00 87.00 83.00 73.00 45.00 98.00
1915 42.00 ----- z 52.00 84.00 90.00 87.00 88.00 89.00 86.00 81.00 75.00 47.00 90.00
1916 42.00 45.00 64.00 74.00 92.00 91.00 96.00 95.00 94.00 84.00 70.00 58.00 96.00
1917 47.00 42.00 68.00 78.00 91.00 92.00 101.00 91.00 87.00 70.00 67.00 42.00 101.00
1918 48.00 50.00 78.00 74.00 91.00 95.00 95.00 94.00 83.00 84.00 61.00 54.00 95.00
1919 54.00 44.00 70.00 71.00 88.00 93.00 97.00 94.00 88.00 78.00 54.00 43.00 a 97.00
1920 45.00 41.00 73.00 62.00 85.00 94.00 97.00 90.00 88.00 82.00 56.00 44.00 97.00
1921 53.00 62.00 77.00 82.00 90.00 98.00 97.00 93.00 88.00 80.00 58.00 60.00 98.00
1922 40.00 41.00 64.00 72.00 84.00 100.00 89.00 93.00 96.00 87.00 66.00 46.00 100.00
1923 45.00 51.00 65.00 83.00 86.00 95.00 95.00 89.00 85.00 74.00 60.00 56.00 95.00
1924 47.00 55.00 53.00 84.00 92.00 88.00 92.00 94.00 82.00 79.00 68.00 47.00 94.00
1925 37.00 45.00 76.00 84.00 96.00 92.00 102.00 95.00 99.00 61.00 60.00 48.00 102.00
1926 40.00 52.00 70.00 92.00 95.00 101.00 106.00 96.00 87.00 76.00 a 61.00 40.00 106.00
1927 43.00 51.00 66.00 84.00 82.00 98.00 95.00 92.00 91.00 81.00 54.00 40.00 98.00
1928 47.00 50.00 81.00 80.00 90.00 83.00 93.00 95.00 85.00 91.00 59.00 49.00 95.00
1929 39.00 35.00 64.00 84.00 84.00 92.00 95.00 97.00 89.00 77.00 49.00 48.00 97.00
1930 45.00 58.00 72.00 85.00 85.00 96.00 106.00 107.00 88.00 87.00 67.00 55.00 107.00
1931 64.00 57.00 60.00 89.00 92.00 104.00 102.00 98.00 101.00 79.00 74.00 48.00 104.00
1932 37.00 56.00 64.00 74.00 94.00 94.00 102.00 a 97.00 86.00 85.00 64.00 53.00 102.00
1933 51.00 55.00 63.00 77.00 92.00 104.00 100.00 91.00 92.00 81.00 69.00 54.00 104.00
1934 55.00 57.00 71.00 90.00 106.00 99.00 103.00 107.00 87.00 86.00 70.00 a 41.00 107.00
1935 42.00 50.00 74.00 78.00 74.00 88.00 105.00 98.00 92.00 80.00 62.00 44.00 105.00
1936 37.00 40.00 64.00 83.00 92.00 a 103.00 111.00 109.00 94.00 a 82.00 a 61.00 48.00 111.00
1937 35.00 44.00 65.00 76.00 84.00 102.00 100.00 104.00 96.00 84.00 70.00 48.00 104.00
1938 45.00 41.00 70.00 82.00 84.00 94.00 95.00 99.00 94.00 91.00 74.00 51.00 99.00
1939 45.00 46.00 80.00 87.00 97.00 94.00 102.00 91.00 101.00 86.00 71.00 64.00 102.00
1940 37.00 41.00 65.00 82.00 91.00 96.00 105.00 93.00 96.00 84.00 63.00 42.00 105.00
1941 45.00 41.00 63.00 78.00 95.00 91.00 101.00 99.00 a 90.00 75.00 67.00 57.00 101.00
1942 52.00 40.00 67.00 83.00 87.00 90.00 98.00 95.00 88.00 84.00 65.00 46.00 98.00
1943 38.00 62.00 86.00 82.00 94.00 95.00 94.00 93.00 86.00 83.00 55.00 53.00 95.00
1944 63.00 51.00 54.00 69.00 89.00 96.00 93.00 94.00 86.00 78.00 69.00 42.00 96.00
1945 44.00 47.00 72.00 77.00 82.00 89.00 98.00 97.00 95.00 85.00 71.00 50.00 98.00
1946 39.00 54.00 80.00 87.00 80.00 95.00 95.00 97.00 89.00 74.00 57.00 58.00 97.00
1947 59.00 47.00 70.00 77.00 79.00 91.00 108.00 a 105.00 100.00 89.00 54.00 43.00 a 108.00
1948 46.00 55.00 67.00 85.00 95.00 88.00 99.00 98.00 92.00 76.00 68.00 48.00 99.00
1949 43.00 45.00 59.00 89.00 92.00 95.00 98.00 95.00 a 84.00 80.00 74.00 51.00 98.00
1950 40.00 43.00 65.00 73.00 92.00 90.00 86.00 90.00 b 87.00 89.00 70.00 51.00 92.00
1951 52.00 a 54.00 45.00 80.00 82.00 85.00 92.00 91.00 83.00 87.00 62.00 54.00 92.00
1952 43.00 47.00 59.00 85.00 93.00 96.00 96.00 91.00 90.00 81.00 69.00 52.00 96.00
1953 42.00 44.00 64.00 81.00 b 92.00 100.00 95.00 93.00 93.00 91.00 74.00 50.00 100.00
1954 41.00 65.00 55.00 91.00 89.00 96.00 100.00 94.00 88.00 a 70.00 70.00 41.00 100.00
1955 49.00 43.00 66.00 80.00 87.00 a 91.00 100.00 a 101.00 98.00 85.00 63.00 40.00 101.00
1956 45.00 40.00 62.00 74.00 89.00 100.00 92.00 95.00 95.00 88.00 61.00 51.00 100.00
1957 37.00 52.00 61.00 82.00 86.00 89.00 98.00 96.00 84.00 79.00 54.00 58.00 98.00
1958 56.00 66.00 59.00 84.00 88.00 95.00 92.00 99.00 93.00 91.00 69.00 56.00 99.00
1959 48.00 39.00 66.00 84.00 94.00 98.00 100.00 95.00 96.00 74.00 57.00 50.00 100.00
1960 39.00 40.00 52.00 93.00 87.00 87.00 95.00 99.00 93.00 83.00 66.00 54.00 99.00
1961 46.00 47.00 66.00 80.00 85.00 95.00 93.00 a 96.00 87.00 83.00 61.00 58.00 96.00
1962 45.00 48.00 47.00 92.00 88.00 88.00 94.00 92.00 83.00 85.00 73.00 61.00 94.00
1963 54.00 57.00 78.00 84.00 88.00 96.00 95.00 95.00 95.00 94.00 67.00 57.00 96.00
1964 56.00 57.00 57.00 91.00 94.00 94.00 96.00 94.00 91.00 80.00 68.00 45.00 96.00
1965 45.00 51.00 54.00 87.00 89.00 89.00 96.00 101.00 84.00 79.00 74.00 50.00 101.00
1966 48.00 53.00 75.00 75.00 92.00 94.00 104.00 94.00 86.00 84.00 60.00 49.00 a 104.00
1967 42.00 54.00 90.00 86.00 101.00 a 91.00 100.00 93.00 85.00 a 88.00 b 67.00 a 51.00 a 101.00
1968 47.00 40.00 86.00 89.00 87.00 98.00 95.00 99.00 86.00 82.00 69.00 49.00 a 99.00
1969 39.00 37.00 51.00 79.00 93.00 93.00 ----- z 92.00 f 86.00 85.00 69.00 54.00 93.00
1970 41.00 48.00 48.00 86.00 93.00 99.00 97.00 98.00 100.00 83.00 56.00 59.00 100.00
1971 41.00 54.00 68.00 81.00 85.00 98.00 93.00 97.00 97.00 82.00 71.00 39.00 98.00
1972 45.00 49.00 66.00 80.00 91.00 95.00 92.00 96.00 92.00 80.00 64.00 51.00 96.00
1973 48.00 47.00 68.00 76.00 92.00 97.00 95.00 98.00 85.00 82.00 ----- z 52.00 98.00
1974 52.00 57.00 73.00 82.00 86.00 103.00 100.00 ----- z 89.00 84.00 68.00 52.00 103.00
1975 40.00 40.00 64.00 74.00 93.00 92.00 98.00 94.00 90.00 88.00 75.00 44.00 98.00
1976 43.00 61.00 74.00 82.00 91.00 96.00 108.00 100.00 a 104.00 89.00 66.00 ----- z 108.00
1977 39.00 63.00 71.00 89.00 91.00 97.00 98.00 90.00 a 88.00 74.00 63.00 b 53.00 98.00
1978 30.00 ----- z 84.00 79.00 93.00 99.00 a 97.00 96.00 a 97.00 b 82.00 75.00 42.00 99.00
1979 27.00 39.00 50.00 80.00 a 91.00 100.00 a 95.00 96.00 89.00 82.00 65.00 56.00 100.00
1980 58.00 43.00 62.00 a 94.00 93.00 102.00 a 102.00 100.00 95.00 88.00 68.00 54.00 102.00
1981 66.00 68.00 70.00 90.00 a 85.00 96.00 a 100.00 a 92.00 93.00 75.00 67.00 44.00 100.00
1982 41.00 ----- z 58.00 81.00 85.00 91.00 101.00 97.00 86.00 79.00 60.00 57.00 101.00
1983 42.00 51.00 70.00 74.00 91.00 95.00 99.00 102.00 95.00 82.00 63.00 30.00 102.00
1984 44.00 50.00 54.00 80.00 84.00 89.00 94.00 101.00 97.00 77.00 65.00 60.00 101.00
1985 45.00 57.00 74.00 k 91.00 92.00 97.00 98.00 94.00 95.00 77.00 60.00 38.00 98.00
1986 47.00 49.00 81.00 80.00 86.00 94.00 98.00 94.00 86.00 83.00 58.00 46.00 98.00
1987 62.00 63.00 79.00 95.00 87.00 n 98.00 99.00 99.00 88.00 87.00 64.00 47.00 99.00
1988 40.00 47.00 78.00 87.00 90.00 107.00 97.00 104.00 90.00 77.00 63.00 49.00 107.00
1989 58.00 53.00 78.00 86.00 92.00 96.00 103.00 92.00 92.00 84.00 62.00 51.00 103.00
1990 55.00 63.00 69.00 86.00 90.00 96.00 102.00 93.00 93.00 86.00 74.00 57.00 102.00
1991 40.00 58.00 76.00 88.00 91.00 94.00 96.00 95.00 90.00 82.00 53.00 45.00 96.00
1992 51.00 50.00 69.00 82.00 91.00 89.00 84.00 89.00 83.00 88.00 53.00 43.00 91.00
1993 39.00 40.00 63.00 69.00 81.00 89.00 89.00 93.00 87.00 86.00 57.00 45.00 93.00
1994 41.00 47.00 73.00 88.00 90.00 96.00 88.00 92.00 90.00 72.00 66.00 42.00 96.00
1995 38.00 52.00 71.00 68.00 80.00 97.00 102.00 95.00 87.00 85.00 53.00 50.00 102.00
1996 55.00 64.00 69.00 78.00 93.00 93.00 90.00 90.00 87.00 83.00 62.00 34.00 93.00
1997 41.00 44.00 76.00 75.00 87.00 95.00 98.00 94.00 90.00 91.00 55.00 51.00 98.00
1998 56.00 56.00 76.00 80.00 92.00 94.00 92.00 93.00 96.00 78.00 68.00 70.00 96.00
1999 42.00 56.00 73.00 76.00 87.00 92.00 96.00 95.00 91.00 82.00 80.00 55.00 96.00
2000 52.00 67.00 78.00 81.00 88.00 99.00 95.00 97.00 93.00 86.00 68.00 38.00 99.00
2001 43.00 38.00 55.00 85.00 95.00 96.00 91.00 a 95.00 87.00 90.00 75.00 56.00 96.00
2002 68.00 70.00 53.00 92.00 93.00 98.00 101.00 96.00 96.00 86.00 70.00 58.00 101.00
2003 57.00 51.00 76.00 86.00 83.00 92.00 96.00 99.00 92.00 87.00 65.00 49.00 99.00
2004 52.00 45.00 77.00 92.00 91.00 95.00 94.00 90.00 90.00 80.00 72.00 58.00 95.00
2005 52.00 58.00 74.00 81.00 85.00 95.00 98.00 93.00 92.00 88.00 77.00 42.00 98.00
2006 55.00 56.00 61.00 87.00 96.00 92.00 99.00 99.00 86.00 91.00 76.00 54.00 99.00
2007 44.00 46.00 77.00 93.00 93.00 92.00 98.00 94.00 90.00 88.00 65.00 37.00 98.00
2008 40.00 38.00 52.00 79.00 84.00 89.00 93.00 98.00 88.00 77.00 77.00 47.00 98.00
2009 39.00 57.00 71.00 89.00 95.00 94.00 87.00 93.00 88.00 71.00 71.00 52.00 95.00
2010 38.00 36.00 77.00 81.00 93.00 93.00 95.00 95.00 90.00 89.00 73.00 44.00 95.00
2011 38.00 49.00 63.00 75.00 90.00 100.00 c 97.00 a 95.00 91.00 87.00 63.00 53.00 100.00
2012 60.00 a 52.00 a 83.00 91.00 92.00 98.00 102.00 101.00 96.00 83.00 69.00 60.00 102.00
2013 47.00 48.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 48.00
Period of Record Statistics
MEAN 45.97 50.31 67.62 81.95 89.45 94.62 97.21 95.70 90.78 81.99 65.17 49.42 99.08
S.D. 7.57 8.42 9.67 6.44 4.79 4.32 4.81 3.93 4.88 5.79 6.73 6.70 3.95
SKEW 0.59 0.31 -0.17 -0.35 -0.19 0.14 0.10 0.82 0.52 -0.61 -0.24 -0.01 0.53
MAX 68.00 70.00 90.00 95.00 106.00 107.00 111.00 109.00 104.00 94.00 80.00 70.00 111.00
MIN 27.00 35.00 45.00 62.00 74.00 83.00 84.00 89.00 82.00 61.00 49.00 30.00 91.00
NO YRS 115 112 112 113 112 112 113 112 114 114 111 113 96