DULUTH INTL AP, at

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(212248)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 69.00 60.00 40.00 69.00
1949 39.00 30.00 a 46.00 76.00 83.00 91.00 92.00 95.00 81.00 72.00 62.00 45.00 95.00
1950 34.00 36.00 41.00 53.00 80.00 83.00 89.00 88.00 81.00 74.00 49.00 39.00 89.00
1951 33.00 41.00 45.00 73.00 80.00 82.00 88.00 81.00 75.00 76.00 49.00 50.00 88.00
1952 39.00 35.00 40.00 88.00 85.00 87.00 88.00 87.00 83.00 65.00 55.00 39.00 88.00
1953 37.00 36.00 50.00 63.00 86.00 85.00 86.00 90.00 86.00 86.00 68.00 39.00 90.00
1954 32.00 45.00 44.00 68.00 75.00 87.00 88.00 86.00 82.00 65.00 60.00 37.00 88.00
1955 34.00 33.00 58.00 79.00 85.00 87.00 91.00 92.00 80.00 81.00 43.00 33.00 92.00
1956 32.00 39.00 47.00 60.00 77.00 92.00 84.00 87.00 79.00 80.00 56.00 42.00 92.00
1957 33.00 40.00 53.00 82.00 77.00 80.00 89.00 90.00 80.00 72.00 50.00 43.00 90.00
1958 38.00 53.00 51.00 76.00 82.00 85.00 87.00 92.00 82.00 70.00 61.00 37.00 92.00
1959 30.00 39.00 54.00 68.00 86.00 88.00 89.00 89.00 83.00 70.00 44.00 44.00 89.00
1960 33.00 36.00 45.00 71.00 78.00 85.00 93.00 86.00 89.00 77.00 55.00 45.00 93.00
1961 40.00 52.00 50.00 61.00 82.00 93.00 87.00 95.00 90.00 83.00 60.00 44.00 95.00
1962 36.00 37.00 42.00 77.00 84.00 87.00 80.00 82.00 77.00 73.00 52.00 55.00 87.00
1963 40.00 37.00 63.00 73.00 82.00 92.00 90.00 90.00 81.00 84.00 58.00 38.00 92.00
1964 42.00 44.00 46.00 70.00 90.00 87.00 94.00 85.00 81.00 75.00 63.00 33.00 94.00
1965 36.00 39.00 40.00 83.00 80.00 82.00 87.00 89.00 77.00 74.00 63.00 37.00 89.00
1966 28.00 44.00 49.00 62.00 84.00 89.00 90.00 84.00 80.00 79.00 52.00 37.00 90.00
1967 37.00 35.00 65.00 67.00 74.00 81.00 87.00 85.00 79.00 73.00 51.00 41.00 87.00
1968 44.00 40.00 65.00 78.00 77.00 90.00 86.00 87.00 79.00 73.00 52.00 35.00 90.00
1969 32.00 36.00 46.00 65.00 90.00 81.00 88.00 90.00 84.00 71.00 56.00 42.00 90.00
1970 32.00 41.00 47.00 73.00 85.00 87.00 90.00 92.00 85.00 70.00 55.00 41.00 92.00
1971 28.00 43.00 40.00 68.00 76.00 84.00 84.00 90.00 87.00 71.00 51.00 33.00 90.00
1972 34.00 32.00 46.00 62.00 87.00 88.00 82.00 88.00 73.00 67.00 48.00 28.00 88.00
1973 47.00 40.00 56.00 69.00 79.00 80.00 91.00 90.00 80.00 73.00 45.00 34.00 91.00
1974 35.00 36.00 46.00 69.00 76.00 83.00 92.00 82.00 75.00 74.00 55.00 36.00 92.00
1975 33.00 33.00 43.00 52.00 81.00 85.00 93.00 87.00 72.00 78.00 69.00 34.00 93.00
1976 35.00 55.00 50.00 72.00 79.00 88.00 86.00 94.00 95.00 71.00 50.00 38.00 95.00
1977 29.00 45.00 56.00 84.00 86.00 86.00 89.00 77.00 73.00 65.00 56.00 36.00 89.00
1978 25.00 33.00 58.00 72.00 85.00 87.00 88.00 91.00 91.00 76.00 70.00 35.00 91.00
1979 26.00 35.00 44.00 60.00 83.00 85.00 88.00 83.00 83.00 68.00 53.00 43.00 88.00
1980 38.00 35.00 44.00 80.00 86.00 93.00 95.00 82.00 78.00 80.00 58.00 39.00 95.00
1981 43.00 53.00 60.00 67.00 80.00 78.00 88.00 82.00 82.00 64.00 63.00 34.00 88.00
1982 34.00 41.00 41.00 75.00 75.00 80.00 90.00 82.00 78.00 66.00 53.00 52.00 90.00
1983 33.00 40.00 38.00 68.00 73.00 88.00 93.00 92.00 92.00 69.00 56.00 30.00 93.00
1984 41.00 45.00 45.00 71.00 81.00 81.00 89.00 92.00 90.00 70.00 54.00 44.00 92.00
1985 35.00 48.00 52.00 77.00 82.00 81.00 85.00 84.00 82.00 65.00 45.00 34.00 85.00
1986 42.00 33.00 71.00 71.00 90.00 87.00 90.00 83.00 74.00 73.00 50.00 34.00 90.00
1987 45.00 50.00 69.00 82.00 83.00 88.00 91.00 90.00 83.00 74.00 56.00 35.00 91.00
1988 37.00 42.00 48.00 70.00 87.00 91.00 97.00 91.00 79.00 71.00 46.00 44.00 97.00
1989 42.00 34.00 55.00 70.00 80.00 83.00 91.00 92.00 81.00 80.00 45.00 38.00 92.00
1990 45.00 45.00 61.00 82.00 76.00 86.00 93.00 87.00 84.00 68.00 68.00 50.00 93.00
1991 38.00 52.00 55.00 79.00 83.00 82.00 92.00 90.00 79.00 71.00 55.00 40.00 92.00
1992 38.00 43.00 53.00 69.00 83.00 85.00 78.00 86.00 75.00 84.00 43.00 35.00 86.00
1993 45.00 44.00 55.00 66.00 81.00 87.00 82.00 87.00 72.00 76.00 46.00 40.00 87.00
1994 26.00 47.00 50.00 75.00 85.00 83.00 85.00 83.00 80.00 68.00 55.00 44.00 85.00
1995 38.00 39.00 58.00 56.00 82.00 94.00 94.00 85.00 82.00 81.00 42.00 34.00 94.00
1996 40.00 45.00 50.00 55.00 80.00 89.00 82.00 83.00 80.00 73.00 52.00 33.00 89.00
1997 36.00 46.00 49.00 64.00 79.00 84.00 85.00 86.00 82.00 76.00 45.00 46.00 86.00
1998 37.00 49.00 60.00 76.00 85.00 78.00 90.00 86.00 86.00 71.00 60.00 53.00 90.00
1999 39.00 47.00 56.00 72.00 86.00 85.00 92.00 86.00 80.00 72.00 69.00 a 46.00 92.00
2000 35.00 55.00 70.00 72.00 82.00 88.00 87.00 84.00 84.00 76.00 58.00 31.00 88.00
2001 38.00 28.00 47.00 80.00 74.00 90.00 87.00 93.00 82.00 73.00 66.00 44.00 93.00
2002 45.00 48.00 46.00 71.00 87.00 91.00 89.00 83.00 88.00 69.00 54.00 a 45.00 91.00
2003 48.00 43.00 60.00 81.00 79.00 83.00 91.00 90.00 80.00 79.00 51.00 40.00 91.00
2004 31.00 46.00 52.00 70.00 70.00 84.00 90.00 84.00 83.00 76.00 59.00 38.00 90.00
2005 33.00 47.00 55.00 76.00 71.00 91.00 92.00 90.00 85.00 75.00 57.00 38.00 92.00
2006 45.00 34.00 51.00 70.00 79.00 83.00 97.00 84.00 82.00 77.00 58.00 41.00 97.00
2007 35.00 41.00 72.00 76.00 86.00 85.00 88.00 88.00 88.00 75.00 52.00 34.00 88.00
2008 41.00 35.00 46.00 69.00 74.00 84.00 86.00 85.00 84.00 ----- z 67.00 35.00 a 86.00
2009 42.00 40.00 55.00 73.00 88.00 87.00 80.00 85.00 80.00 56.00 59.00 36.00 88.00
2010 36.00 39.00 71.00 73.00 86.00 86.00 88.00 89.00 73.00 77.00 56.00 36.00 89.00
2011 26.00 52.00 46.00 65.00 75.00 83.00 92.00 86.00 84.00 80.00 54.00 43.00 92.00
2012 48.00 43.00 75.00 72.00 87.00 88.00 92.00 87.00 87.00 74.00 53.00 48.00 92.00
2013 42.00 38.00 53.00 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 53.00
Period of Record Statistics
MEAN 36.77 41.34 52.23 71.05 81.39 85.83 88.70 87.20 81.59 73.34 55.02 39.49 90.59
S.D. 5.62 6.44 8.85 7.59 4.78 3.76 3.90 3.80 4.94 5.55 6.98 5.71 2.73
SKEW -0.02 0.27 0.75 -0.35 -0.31 0.07 -0.43 -0.04 0.24 -0.17 0.23 0.58 0.16
MAX 48.00 55.00 75.00 88.00 90.00 94.00 97.00 95.00 95.00 86.00 70.00 55.00 97.00
MIN 25.00 28.00 38.00 52.00 70.00 78.00 78.00 77.00 72.00 56.00 42.00 28.00 85.00
NO YRS 65 65 65 64 64 64 64 64 64 64 65 65 63