GRAND RAPIDS FRS LAB,

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(213303)

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.
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
1915 ----- z ----- z ----- z ----- z ----- z 83.00 a 88.00 90.00 86.00 a 71.00 57.00 38.00 90.00
1916 32.00 46.00 60.00 67.00 77.00 82.00 97.00 95.00 83.00 73.00 67.00 43.00 97.00
1917 41.00 37.00 59.00 60.00 82.00 95.00 102.00 90.00 82.00 64.00 60.00 38.00 a 102.00
1918 24.00 g 54.00 64.00 69.00 86.00 86.00 98.00 90.00 80.00 a 72.00 56.00 44.00 98.00
1919 44.00 49.00 63.00 74.00 97.00 94.00 93.00 90.00 84.00 74.00 44.00 42.00 97.00
1920 36.00 40.00 58.00 60.00 84.00 92.00 90.00 92.00 85.00 73.00 44.00 40.00 92.00
1921 42.00 56.00 54.00 76.00 85.00 100.00 97.00 95.00 93.00 78.00 54.00 40.00 100.00
1922 38.00 46.00 62.00 76.00 88.00 96.00 92.00 96.00 a 92.00 84.00 a 54.00 42.00 96.00
1923 34.00 60.00 56.00 82.00 91.00 96.00 97.00 88.00 88.00 80.00 64.00 48.00 97.00
1924 44.00 52.00 52.00 88.00 72.00 86.00 89.00 90.00 77.00 76.00 54.00 36.00 90.00
1925 40.00 53.00 68.00 74.00 92.00 88.00 93.00 95.00 85.00 57.00 58.00 42.00 95.00
1926 46.00 48.00 57.00 78.00 91.00 94.00 98.00 90.00 79.00 a 70.00 48.00 34.00 98.00
1927 49.00 46.00 57.00 72.00 73.00 90.00 90.00 84.00 a 87.00 b 74.00 46.00 a 46.00 90.00
1928 44.00 41.00 61.00 68.00 a 87.00 85.00 88.00 90.00 78.00 a 76.00 55.00 a 45.00 90.00
1929 26.00 40.00 56.00 73.00 83.00 90.00 100.00 88.00 92.00 80.00 54.00 40.00 100.00
1930 33.00 59.00 49.00 a 70.00 a 81.00 85.00 a 96.00 98.00 83.00 81.00 80.00 a 49.00 98.00
1931 42.00 47.00 a 45.00 a 79.00 89.00 99.00 96.00 90.00 99.00 81.00 69.00 43.00 b 99.00
1932 39.00 56.00 50.00 72.00 90.00 88.00 95.00 a 89.00 89.00 71.00 57.00 45.00 95.00
1933 43.00 42.00 48.00 71.00 a 83.00 93.00 100.00 a 89.00 a 89.00 78.00 61.00 36.00 100.00
1934 39.00 41.00 48.00 82.00 101.00 97.00 89.00 93.00 77.00 80.00 a 63.00 40.00 101.00
1935 36.00 45.00 55.00 65.00 76.00 81.00 94.00 88.00 85.00 68.00 34.00 u 35.00 a 94.00
1936 30.00 36.00 44.00 60.00 84.00 a 89.00 104.00 94.00 90.00 80.00 49.00 43.00 104.00
1937 22.00 41.00 53.00 61.00 85.00 86.00 94.00 a 92.00 86.00 73.00 a 56.00 40.00 94.00
1938 41.00 47.00 68.00 42.00 u 78.00 89.00 88.00 94.00 86.00 82.00 61.00 40.00 94.00
1939 34.00 32.00 67.00 74.00 95.00 87.00 92.00 c 93.00 90.00 76.00 62.00 58.00 95.00
1940 31.00 39.00 42.00 70.00 a 85.00 89.00 95.00 89.00 88.00 74.00 48.00 41.00 95.00
1941 39.00 36.00 57.00 a 76.00 84.00 89.00 96.00 89.00 a 86.00 68.00 58.00 54.00 96.00
1942 51.00 46.00 53.00 81.00 80.00 84.00 a 90.00 86.00 a 80.00 75.00 56.00 34.00 a 90.00
1943 35.00 46.00 58.00 75.00 80.00 88.00 90.00 85.00 82.00 78.00 45.00 40.00 90.00
1944 45.00 39.00 45.00 67.00 86.00 87.00 85.00 90.00 82.00 74.00 a 66.00 35.00 90.00
1945 36.00 40.00 73.00 a 66.00 74.00 87.00 92.00 89.00 90.00 82.00 45.00 45.00 92.00
1946 34.00 33.00 80.00 78.00 82.00 85.00 88.00 89.00 a 80.00 75.00 57.00 40.00 89.00
1947 43.00 50.00 52.00 74.00 73.00 82.00 93.00 99.00 90.00 83.00 a 52.00 33.00 99.00
1948 35.00 41.00 53.00 a 78.00 82.00 90.00 95.00 94.00 89.00 70.00 59.00 47.00 95.00
1949 42.00 32.00 46.00 79.00 90.00 88.00 90.00 91.00 a 79.00 71.00 61.00 44.00 91.00
1950 34.00 39.00 48.00 58.00 85.00 86.00 87.00 87.00 81.00 76.00 60.00 43.00 87.00
1951 37.00 41.00 51.00 69.00 80.00 82.00 89.00 87.00 77.00 83.00 54.00 51.00 89.00
1952 42.00 37.00 44.00 89.00 88.00 92.00 88.00 87.00 85.00 67.00 60.00 42.00 92.00
1953 36.00 38.00 51.00 64.00 85.00 89.00 88.00 89.00 87.00 a 84.00 67.00 41.00 89.00
1954 33.00 48.00 49.00 72.00 79.00 87.00 90.00 87.00 82.00 66.00 62.00 41.00 90.00
1955 33.00 34.00 58.00 78.00 84.00 90.00 92.00 92.00 a 82.00 83.00 41.00 33.00 a 92.00
1956 35.00 35.00 51.00 63.00 77.00 94.00 85.00 85.00 79.00 a 80.00 58.00 45.00 94.00
1957 32.00 45.00 56.00 82.00 81.00 82.00 92.00 87.00 85.00 75.00 50.00 42.00 92.00
1958 45.00 55.00 57.00 75.00 83.00 86.00 89.00 92.00 82.00 77.00 64.00 34.00 92.00
1959 34.00 a 43.00 52.00 69.00 89.00 86.00 86.00 92.00 82.00 73.00 46.00 45.00 92.00
1960 41.00 42.00 47.00 70.00 80.00 82.00 89.00 87.00 88.00 80.00 50.00 43.00 89.00
1961 43.00 61.00 62.00 61.00 84.00 93.00 87.00 93.00 91.00 82.00 59.00 39.00 93.00
1962 37.00 39.00 51.00 82.00 81.00 86.00 81.00 87.00 80.00 73.00 53.00 59.00 87.00
1963 41.00 42.00 70.00 74.00 83.00 88.00 88.00 86.00 80.00 86.00 62.00 42.00 88.00
1964 44.00 48.00 51.00 78.00 91.00 88.00 92.00 88.00 80.00 75.00 62.00 31.00 92.00
1965 35.00 37.00 41.00 83.00 79.00 85.00 89.00 90.00 75.00 68.00 65.00 40.00 90.00
1966 23.00 42.00 52.00 61.00 82.00 91.00 91.00 86.00 81.00 79.00 45.00 40.00 91.00
1967 35.00 39.00 68.00 66.00 75.00 83.00 89.00 87.00 82.00 78.00 50.00 42.00 89.00
1968 44.00 39.00 70.00 78.00 75.00 85.00 88.00 87.00 79.00 74.00 51.00 38.00 88.00
1969 30.00 39.00 48.00 69.00 89.00 82.00 91.00 89.00 83.00 74.00 61.00 40.00 91.00
1970 33.00 45.00 45.00 76.00 84.00 89.00 90.00 92.00 88.00 82.00 52.00 39.00 92.00
1971 27.00 46.00 49.00 72.00 86.00 90.00 85.00 90.00 91.00 71.00 51.00 34.00 91.00
1972 34.00 31.00 49.00 68.00 90.00 89.00 86.00 88.00 74.00 72.00 50.00 30.00 90.00
1973 51.00 44.00 60.00 72.00 80.00 87.00 91.00 91.00 83.00 74.00 52.00 35.00 91.00
1974 35.00 40.00 49.00 82.00 76.00 87.00 94.00 87.00 78.00 73.00 56.00 40.00 94.00
1975 33.00 43.00 50.00 61.00 87.00 87.00 95.00 90.00 75.00 78.00 70.00 33.00 95.00
1976 38.00 59.00 55.00 75.00 83.00 92.00 90.00 100.00 97.00 82.00 54.00 39.00 100.00
1977 30.00 47.00 63.00 88.00 90.00 88.00 92.00 78.00 75.00 67.00 57.00 37.00 92.00
1978 27.00 32.00 57.00 74.00 89.00 89.00 88.00 92.00 92.00 76.00 70.00 40.00 92.00
1979 24.00 38.00 50.00 69.00 81.00 87.00 89.00 86.00 87.00 71.00 56.00 45.00 89.00
1980 42.00 34.00 54.00 93.00 90.00 91.00 97.00 87.00 86.00 80.00 60.00 41.00 97.00
1981 51.00 55.00 66.00 71.00 82.00 81.00 92.00 85.00 84.00 67.00 64.00 37.00 92.00
1982 36.00 44.00 47.00 79.00 80.00 82.00 93.00 89.00 84.00 68.00 57.00 53.00 93.00
1983 34.00 40.00 49.00 71.00 79.00 90.00 95.00 95.00 93.00 76.00 53.00 25.00 95.00
1984 43.00 53.00 48.00 70.00 79.00 84.00 92.00 99.00 88.00 76.00 53.00 42.00 a 99.00
1985 40.00 45.00 56.00 78.00 85.00 87.00 90.00 85.00 79.00 65.00 50.00 34.00 90.00
1986 46.00 36.00 67.00 72.00 89.00 89.00 90.00 85.00 78.00 72.00 54.00 41.00 90.00
1987 48.00 50.00 69.00 86.00 87.00 95.00 91.00 89.00 81.00 79.00 59.00 36.00 95.00
1988 39.00 48.00 51.00 75.00 89.00 94.00 100.00 97.00 80.00 77.00 54.00 52.00 100.00
1989 47.00 35.00 57.00 76.00 84.00 87.00 93.00 93.00 82.00 81.00 50.00 43.00 93.00
1990 46.00 47.00 60.00 83.00 78.00 89.00 96.00 88.00 88.00 68.00 69.00 50.00 96.00
1991 40.00 55.00 57.00 84.00 91.00 90.00 93.00 94.00 81.00 76.00 55.00 45.00 94.00
1992 41.00 46.00 60.00 73.00 86.00 90.00 82.00 87.00 77.00 84.00 49.00 38.00 90.00
1993 42.00 48.00 62.00 69.00 85.00 90.00 85.00 91.00 75.00 81.00 47.00 37.00 a 91.00
1994 28.00 49.00 58.00 76.00 87.00 91.00 86.00 86.00 83.00 69.00 56.00 47.00 91.00
1995 34.00 47.00 58.00 59.00 84.00 96.00 95.00 87.00 87.00 82.00 42.00 39.00 96.00
1996 45.00 49.00 55.00 65.00 81.00 92.00 87.00 90.00 85.00 77.00 57.00 33.00 92.00
1997 43.00 49.00 60.00 70.00 86.00 89.00 89.00 91.00 87.00 82.00 47.00 47.00 91.00
1998 39.00 55.00 65.00 81.00 93.00 87.00 93.00 89.00 90.00 76.00 58.00 53.00 93.00
1999 47.00 52.00 67.00 81.00 90.00 90.00 92.00 90.00 88.00 76.00 71.00 50.00 92.00
2000 38.00 57.00 72.00 75.00 86.00 87.00 91.00 88.00 87.00 80.00 61.00 32.00 91.00
2001 42.00 32.00 54.00 82.00 87.00 93.00 92.00 97.00 86.00 80.00 70.00 43.00 97.00
2002 50.00 45.00 47.00 83.00 90.00 93.00 96.00 88.00 92.00 75.00 58.00 45.00 96.00
2003 50.00 41.00 71.00 83.00 83.00 88.00 92.00 95.00 94.00 86.00 50.00 42.00 95.00
2004 32.00 52.00 54.00 84.00 77.00 89.00 93.00 88.00 88.00 81.00 59.00 39.00 93.00
2005 35.00 53.00 63.00 83.00 83.00 94.00 93.00 96.00 88.00 82.00 58.00 42.00 96.00
2006 49.00 38.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 77.00 61.00 51.00 77.00
2007 40.00 44.00 74.00 77.00 88.00 89.00 94.00 93.00 91.00 72.00 56.00 34.00 94.00
2008 ----- z 42.00 50.00 74.00 79.00 85.00 88.00 91.00 88.00 69.00 68.00 36.00 91.00
2009 47.00 42.00 59.00 78.00 88.00 86.00 81.00 89.00 84.00 57.00 59.00 34.00 89.00
2010 36.00 42.00 68.00 75.00 89.00 86.00 89.00 91.00 76.00 81.00 64.00 37.00 91.00
2011 26.00 59.00 54.00 72.00 81.00 89.00 95.00 87.00 87.00 81.00 54.00 44.00 95.00
2012 51.00 43.00 77.00 71.00 89.00 89.00 94.00 91.00 87.00 75.00 57.00 47.00 94.00
2013 42.00 45.00 41.00 j ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 45.00
Period of Record Statistics
MEAN 38.55 44.45 56.52 73.92 84.24 88.60 91.48 90.04 84.49 75.60 56.58 41.14 93.38
S.D. 6.77 7.20 8.38 7.45 5.43 4.03 4.29 3.71 5.26 5.81 7.27 6.03 3.68
SKEW -0.18 0.31 0.55 -0.06 0.10 0.38 0.19 0.33 0.13 -0.69 0.29 0.43 0.62
MAX 51.00 61.00 80.00 93.00 101.00 100.00 104.00 100.00 99.00 86.00 80.00 59.00 104.00
MIN 22.00 31.00 41.00 58.00 72.00 81.00 81.00 78.00 74.00 57.00 41.00 25.00 87.00
NO YRS 96 98 96 95 96 97 97 97 97 98 97 98 92