ANN ARBOR U OF MI, s

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(200230)

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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
1891 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 57.03 41.71 b 41.16 46.64
1892 27.45 33.97 37.39 53.83 64.03 a 77.83 81.68 80.26 71.83 58.58 40.10 30.94 54.82
1893 21.10 27.68 38.26 50.13 62.77 79.24 a 80.97 79.39 70.90 59.39 43.67 35.52 54.08
1894 35.94 28.50 46.68 54.87 63.94 81.13 84.19 80.26 74.20 58.45 41.10 38.35 57.30
1895 26.65 23.82 37.65 58.93 70.87 83.57 82.87 81.58 76.97 55.58 44.90 35.68 56.59
1896 29.68 31.38 36.16 62.07 75.74 78.60 80.19 78.16 66.93 56.16 46.83 34.94 56.40
1897 28.48 32.14 43.00 54.93 65.68 76.97 87.77 79.90 80.83 67.61 45.70 33.16 58.02
1898 33.35 32.32 49.52 56.00 69.42 82.27 88.58 85.19 78.30 59.87 43.03 31.58 59.12
1899 30.84 27.68 35.13 62.27 71.87 81.70 84.55 87.29 71.43 68.03 49.03 34.55 58.70
1900 34.71 28.39 33.68 58.50 b 72.10 78.37 84.26 87.90 80.77 71.35 44.90 36.13 59.25
1901 31.77 23.07 42.03 58.07 68.13 81.47 89.23 83.81 75.57 64.55 42.23 30.87 57.57
1902 30.39 29.86 49.00 57.27 70.90 74.10 a 82.48 79.10 71.93 61.52 53.17 31.45 57.60
1903 29.65 31.61 51.68 56.93 72.00 72.70 82.32 76.00 74.63 62.29 43.77 28.35 56.83
1904 22.90 22.41 40.48 50.07 68.81 78.10 82.84 79.97 73.13 59.45 48.30 30.55 54.75
1905 25.94 24.29 48.58 55.03 68.55 78.03 81.65 82.35 76.43 61.16 45.07 36.06 56.93
1906 38.81 34.04 34.77 61.07 69.26 78.23 82.71 84.68 80.90 58.23 46.60 34.61 58.66
1907 31.77 28.00 47.03 46.60 59.32 74.23 80.87 78.90 70.73 54.58 42.97 35.10 54.18
1908 28.87 29.31 43.68 56.83 68.61 78.47 83.77 79.48 80.60 64.29 48.30 35.32 58.13
1909 34.71 36.46 39.45 54.20 65.81 76.03 81.74 82.68 71.97 56.45 52.67 28.29 56.71
1910 29.42 30.07 55.29 59.60 63.29 76.93 84.87 81.23 72.67 63.97 39.97 28.26 57.13
1911 32.74 34.89 42.90 53.17 77.48 79.47 85.32 80.39 74.23 56.94 41.73 38.03 58.11
1912 17.97 25.45 32.90 57.57 70.29 76.40 81.19 76.13 75.17 62.77 47.27 38.45 55.13
1913 35.71 29.39 43.48 57.47 67.58 81.47 83.81 83.06 74.30 60.45 50.17 39.71 58.88
1914 34.65 24.04 40.26 55.37 70.77 78.83 83.42 80.71 71.93 65.16 47.47 28.71 56.78
1915 27.84 36.04 39.23 60.97 62.58 72.57 78.13 74.35 73.30 61.74 48.90 31.32 55.58
1916 37.39 27.86 36.74 56.77 66.65 70.87 87.10 83.06 70.70 61.03 47.53 31.81 56.46
1917 29.65 26.71 43.81 53.03 59.39 73.03 79.58 78.71 69.40 50.83 a 46.27 26.29 53.06
1918 19.19 34.36 49.29 54.80 74.68 78.80 81.65 85.23 65.00 63.00 46.73 38.87 57.63
1919 36.61 34.18 44.84 56.77 66.74 82.60 85.45 79.16 75.70 64.84 47.27 28.10 58.52
1920 23.90 29.76 47.52 49.67 67.52 77.93 79.03 76.65 74.43 67.87 43.63 37.19 56.26
1921 36.39 35.89 52.74 63.00 71.16 80.87 86.81 77.94 76.47 59.35 42.80 35.65 59.92
1922 30.32 34.61 44.97 57.77 72.06 78.57 81.71 80.84 76.07 63.10 47.80 34.00 58.48
1923 32.00 27.43 40.65 57.03 67.29 81.27 80.87 76.81 71.17 58.97 46.37 42.19 56.84
1924 28.68 29.72 38.39 54.43 61.90 75.00 78.48 79.52 67.00 66.58 48.90 29.68 54.86
1925 29.74 37.50 46.35 64.28 a 65.90 82.60 81.87 80.94 74.07 49.55 43.37 31.90 57.34
1926 31.23 31.86 35.71 50.83 70.13 73.47 81.97 79.61 69.27 56.97 44.27 31.03 54.69
1927 30.16 38.61 47.16 56.37 65.68 72.60 80.23 75.45 75.80 64.61 50.47 35.03 57.68
1928 32.26 34.34 41.32 53.30 69.00 a 71.27 80.90 79.84 68.40 63.13 47.07 37.94 56.56
1929 26.61 27.71 52.26 58.80 66.74 76.43 83.61 80.84 74.90 57.71 41.93 31.06 56.55
1930 28.32 40.29 42.68 58.47 70.58 80.27 86.26 83.97 76.70 58.00 48.30 33.61 58.95
1931 34.23 38.46 39.00 59.80 67.81 79.60 87.84 83.19 78.50 64.81 53.97 41.90 b 60.76
1932 40.65 39.69 36.35 55.30 70.48 79.97 83.61 83.06 72.27 60.06 42.20 35.61 58.27
1933 40.16 34.76 c 40.50 a 56.87 68.71 c 86.41 a 86.35 82.06 77.47 58.35 42.67 35.03 59.11
1934 36.35 24.96 b 39.10 54.10 a 75.83 a 87.70 89.58 82.87 75.60 61.10 49.33 31.19 58.98
1935 30.71 31.43 49.10 53.77 63.00 a 73.47 85.42 80.77 73.43 61.03 44.50 29.16 56.32
1936 26.94 23.93 46.03 51.60 74.58 78.80 88.29 85.97 76.10 59.87 42.97 39.13 57.85
1937 37.35 35.14 39.30 a 54.71 b 69.58 76.40 82.42 83.65 72.28 a 57.20 a 44.62 a 31.19 56.99
1938 30.71 39.07 52.00 58.43 69.42 77.77 83.16 85.03 71.60 68.06 52.07 34.65 60.16
1939 34.32 34.04 42.35 53.83 74.68 80.87 84.87 84.10 78.73 63.06 46.50 38.74 59.67
1940 23.58 32.62 34.32 52.57 66.71 78.70 84.81 79.58 73.17 61.68 44.17 37.35 55.77
1941 30.97 31.57 38.77 64.00 73.42 79.23 85.10 82.52 78.03 63.03 49.47 40.10 59.68
1942 31.58 28.25 44.16 64.66 a 71.32 79.20 83.32 79.19 72.37 62.48 48.90 30.45 57.99
1943 28.00 36.61 43.06 54.73 66.13 82.17 83.03 81.13 71.23 59.87 44.43 34.00 57.03
1944 37.23 35.34 37.87 51.63 73.06 82.10 84.71 84.57 a 74.50 62.10 47.07 30.19 58.36
1945 24.81 33.82 59.61 59.73 61.52 74.60 79.74 80.94 72.23 59.19 47.27 28.23 56.81
1946 35.65 36.18 56.81 58.83 65.16 74.83 82.42 77.42 75.53 68.23 51.30 40.55 60.24
1947 36.58 27.64 36.65 53.90 62.16 73.93 77.74 86.06 73.50 69.45 41.60 32.45 55.97
1948 26.55 32.07 44.13 60.73 65.81 75.69 a 81.94 81.90 75.47 57.39 50.03 36.87 57.38
1949 36.58 37.54 44.23 57.64 b 71.29 83.03 85.13 81.55 69.57 68.55 47.00 40.55 60.22
1950 42.90 33.93 39.35 50.67 71.71 79.33 82.30 a 79.65 71.43 ----- z 42.38 a 30.58 56.75
1951 34.39 34.00 43.48 54.30 70.97 76.67 81.35 77.52 71.30 64.84 39.73 34.55 56.92
1952 35.52 35.97 41.94 59.40 67.35 83.20 86.19 82.03 75.77 59.65 50.67 38.52 59.68
1953 35.84 39.39 45.23 53.30 71.81 81.97 83.61 84.16 76.28 e 68.84 50.50 39.00 60.83
1954 32.10 41.04 41.33 a 61.11 b 64.68 80.27 81.55 79.19 73.77 61.68 47.37 32.42 g 60.37
1955 ----- z 33.64 45.19 65.07 ----- z 79.04 f 87.87 ----- z ----- z 64.71 45.40 32.97 53.55
1956 32.32 36.76 41.06 57.07 70.13 82.93 81.19 80.45 70.34 a 67.84 47.77 40.97 59.07
1957 28.03 38.89 46.48 58.10 68.10 80.27 84.16 81.81 73.80 60.48 47.40 41.68 59.10
1958 32.48 29.50 43.48 61.53 72.87 a 75.10 82.45 81.94 74.03 65.42 50.57 30.26 58.30
1959 28.87 34.36 44.19 60.23 74.65 82.10 85.00 b 86.29 78.24 a 59.94 44.17 39.58 59.80
1960 33.16 33.38 34.71 61.57 67.52 78.03 82.48 81.90 78.69 a 63.55 50.13 31.81 58.08
1961 29.97 40.75 ----- z 58.47 o 67.65 79.13 83.39 81.87 79.20 65.55 50.43 35.10 61.30
1962 29.58 30.89 43.39 60.07 77.90 83.27 82.16 82.68 72.13 65.23 47.80 34.70 a 59.15
1963 24.23 30.04 47.74 63.23 70.00 84.89 b 85.35 79.97 74.83 74.74 52.17 29.74 59.74
1964 36.52 ----- z 46.06 60.90 75.61 83.00 86.48 78.06 75.48 g 63.06 54.03 34.74 61.85
1965 31.13 32.96 35.58 ----- z 76.45 80.10 81.29 78.32 75.67 59.55 ----- z ----- z 61.23
1966 27.97 35.71 48.97 55.17 67.13 85.52 g 89.23 81.55 73.23 58.75 g 49.97 33.68 56.26
1967 34.90 30.39 44.19 60.13 66.29 82.63 81.61 79.61 73.73 61.70 a 43.07 39.53 a 58.15
1968 30.81 33.24 49.97 62.17 67.26 79.21 b 82.71 83.26 74.93 63.35 48.73 34.16 59.15
1969 31.19 35.32 44.55 61.93 71.06 75.30 83.03 85.03 75.37 62.29 47.30 35.06 58.95
1970 28.16 35.36 42.32 60.60 74.45 79.37 82.26 82.77 75.46 b 65.03 47.47 38.10 59.28
1971 28.00 33.89 40.71 58.47 71.03 84.60 82.55 83.47 a 77.43 70.48 48.40 42.29 60.11
1972 31.29 32.28 43.03 56.87 74.74 76.57 83.48 80.29 74.03 57.77 42.80 34.26 57.28
1973 36.45 34.43 53.58 59.33 65.84 80.93 83.68 83.48 76.43 66.74 49.53 34.13 60.38
1974 33.52 32.32 44.81 61.63 66.55 76.77 85.42 81.97 71.93 61.65 48.03 34.42 58.25
1975 35.06 33.86 40.90 50.97 75.26 78.57 83.52 82.03 66.90 64.39 54.30 35.65 58.45
1976 26.71 42.48 50.77 61.17 67.29 81.87 84.32 82.23 75.00 56.19 40.53 29.00 58.13
1977 20.10 32.36 50.48 64.63 78.61 76.07 84.65 78.06 72.40 58.97 46.30 31.52 57.85
1978 25.10 24.64 37.65 57.77 69.39 78.70 81.26 82.32 78.90 59.81 49.03 34.52 56.59
1979 24.00 23.64 48.19 54.53 68.61 79.97 80.00 77.81 76.23 58.97 47.33 39.55 56.57
1980 30.65 28.86 39.84 56.37 71.97 76.20 84.23 81.42 74.83 56.48 46.27 33.48 56.72
1981 27.58 35.21 45.90 61.47 68.16 78.93 82.26 80.42 69.73 56.10 49.43 33.52 57.39
1982 23.71 29.68 40.84 53.97 75.65 75.83 81.97 79.45 73.20 64.77 48.10 43.13 57.52
1983 33.03 38.79 47.42 53.20 66.39 80.37 85.03 84.42 77.60 62.74 49.90 25.97 58.74
1984 24.90 41.76 37.26 57.17 65.87 82.57 83.97 84.23 72.80 64.77 48.93 41.26 58.79
1985 26.06 31.68 48.84 65.17 74.74 75.90 82.00 78.74 75.13 61.74 46.53 28.65 57.93
1986 31.97 30.79 48.74 61.57 70.61 78.93 83.90 78.45 76.17 61.87 44.20 34.87 58.51
1987 31.68 37.75 50.84 62.40 76.68 83.83 86.61 81.48 74.07 56.35 51.30 36.68 60.81
1988 30.74 31.10 46.61 60.40 75.23 85.90 89.26 84.29 73.10 53.84 47.60 35.94 59.50
1989 39.45 30.21 45.94 55.80 69.06 77.77 82.58 79.90 72.00 63.97 45.57 25.00 57.27
1990 39.35 38.46 47.87 60.17 67.26 78.57 83.23 79.42 73.50 63.58 52.60 38.90 60.24
1991 30.97 39.39 50.77 60.87 76.81 83.47 84.23 83.32 73.03 64.10 44.87 37.32 60.76
1992 33.13 36.93 45.06 56.37 71.77 76.70 77.13 76.42 71.63 59.68 43.27 36.52 57.05
1993 33.71 32.07 40.84 56.77 71.58 75.87 82.97 82.23 67.00 60.00 46.20 34.45 56.97
1994 24.48 32.00 45.68 62.03 69.61 81.83 82.26 78.42 75.90 63.10 52.37 40.00 58.97
1995 32.58 32.21 48.74 55.03 69.94 82.00 84.26 85.10 73.47 63.94 40.87 30.87 58.25
1996 31.71 34.03 40.19 55.87 66.94 79.43 81.26 83.71 72.57 62.55 40.23 35.06 56.96
1997 30.35 37.25 46.39 56.83 62.35 78.83 82.32 76.26 71.97 61.06 42.03 35.52 56.76
1998 36.81 42.82 45.52 61.37 77.03 79.77 84.74 83.26 79.97 64.26 51.00 43.61 62.51
1999 30.42 39.79 43.90 62.03 74.81 80.83 86.55 79.58 79.40 62.00 54.97 37.65 60.99
2000 32.19 40.31 53.61 59.17 72.48 78.70 78.48 80.23 73.43 65.52 45.73 25.48 58.78
2001 31.97 35.79 42.77 62.27 71.55 78.53 84.68 83.68 71.97 61.68 55.97 40.74 60.13
2002 39.26 40.96 43.84 59.43 66.39 82.80 88.39 83.19 80.80 59.45 45.03 34.87 60.37
2003 26.55 31.36 47.94 60.50 67.58 77.50 82.58 82.45 72.63 60.94 52.40 38.00 58.37
2004 26.32 36.17 48.13 63.10 72.87 77.57 81.45 77.84 79.13 62.19 49.40 35.32 59.13
2005 31.42 35.86 42.16 63.10 67.61 84.57 85.10 84.61 79.53 63.52 51.53 29.97 59.91
2006 40.48 37.21 46.94 64.17 70.48 78.87 84.74 82.06 70.53 58.48 49.53 42.35 60.49
2007 35.00 26.68 50.77 57.53 75.90 82.63 82.45 82.84 78.17 68.71 46.03 33.48 60.02
2008 34.71 31.31 41.84 63.63 68.65 80.27 83.13 82.87 76.10 60.10 45.33 33.39 58.44
2009 24.94 37.07 48.65 60.60 70.65 77.83 77.84 80.06 74.67 57.61 52.17 34.23 58.03
2010 30.32 32.93 52.77 66.93 72.16 80.37 85.74 84.16 74.13 66.23 50.90 30.52 60.60
2011 28.19 32.21 42.39 55.10 70.84 81.17 90.19 81.97 71.83 62.45 52.87 40.26 59.12
2012 37.13 39.34 61.35 60.80 77.45 83.83 91.29 83.68 74.63 60.82 i ----- z ----- z 67.72
Period of Record Statistics
MEAN 31.16 33.10 44.21 57.96 69.70 79.12 83.52 81.31 74.19 61.87 47.07 34.75 58.09
S.D. 4.79 4.65 5.51 3.97 4.17 3.31 2.72 2.66 3.24 4.10 3.68 4.22 1.70
SKEW -0.17 -0.19 0.35 -0.21 -0.06 -0.12 0.33 -0.10 -0.09 0.06 0.06 -0.04 -0.33
MAX 42.90 42.82 61.35 66.93 78.61 87.70 91.29 87.90 80.90 74.74 55.97 43.61 62.51
MIN 17.97 22.41 32.90 46.60 59.32 70.87 77.13 74.35 65.00 49.55 39.73 25.00 53.06
NO YRS 120 120 120 119 120 119 121 120 119 119 120 119 113