BOULDER st,

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(050848)

File last updated on Apr 4, 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
1893 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 78.00 66.00 66.00 a 78.00
1894 65.00 g 51.00 g 70.00 81.00 a ----- z ----- z 89.00 c 87.00 ----- z ----- z ----- z 63.00 89.00
1895 54.00 c 58.00 b 75.00 b 76.00 86.00 b 85.00 85.00 u ----- z ----- z ----- z ----- z ----- z 86.00
1896 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1897 ----- z ----- z ----- z ----- z 78.00 85.00 90.00 87.00 85.00 77.00 73.00 65.00 90.00
1898 67.00 63.00 62.00 78.00 82.00 95.00 93.00 93.00 85.00 81.00 72.00 60.00 95.00
1899 56.00 55.00 68.00 78.00 82.00 95.00 93.00 92.00 93.00 87.00 76.00 60.00 95.00
1900 63.00 64.00 79.00 72.00 83.00 91.00 95.00 93.00 88.00 83.00 76.00 65.00 95.00
1901 69.00 68.00 75.00 79.00 81.00 95.00 94.00 95.00 86.00 92.00 72.00 a 65.00 95.00
1902 65.00 65.00 66.00 80.00 82.00 94.00 97.00 96.00 92.00 78.00 a 73.00 68.00 97.00
1903 67.00 d 54.00 68.00 b 75.00 a 79.00 a 88.00 92.00 94.00 93.00 83.00 75.00 67.00 94.00
1904 63.00 72.00 a 69.00 77.00 83.00 85.00 90.00 91.00 92.00 82.00 72.00 68.00 92.00
1905 62.00 b 65.00 71.00 77.00 84.00 88.00 90.00 95.00 88.00 83.00 75.00 63.00 a 95.00
1906 70.00 68.00 67.00 79.00 82.00 87.00 88.00 89.00 a 85.00 82.00 73.00 68.00 89.00
1907 67.00 69.00 78.00 80.00 83.00 89.00 93.00 91.00 86.00 81.00 70.00 c 65.00 g 93.00
1908 61.00 70.00 77.00 80.00 86.00 88.00 92.00 89.00 91.00 80.00 72.00 58.00 92.00
1909 70.00 57.00 54.00 72.00 81.00 91.00 91.00 90.00 90.00 80.00 74.00 62.00 91.00
1910 65.00 58.00 90.00 85.00 84.00 90.00 ----- z ----- z 90.00 a 88.00 75.00 63.00 a 90.00
1911 68.00 67.00 70.00 79.00 84.00 94.00 90.00 98.00 92.00 83.00 68.00 ----- z 98.00
1912 ----- z ----- z 62.00 h 73.00 85.00 b 84.00 89.00 91.00 83.00 77.00 73.00 60.00 91.00
1913 58.00 63.00 68.00 78.00 87.00 92.00 94.00 92.00 a 85.00 76.00 70.00 52.00 94.00
1914 63.00 a 61.00 70.00 e 74.00 79.00 90.00 91.00 92.00 a 87.00 77.00 75.00 54.00 92.00
1915 60.00 65.00 64.00 75.00 84.00 89.00 92.00 89.00 87.00 a 81.00 77.00 70.00 b 92.00
1916 64.00 66.00 76.00 80.00 88.00 94.00 95.00 89.00 85.00 73.00 73.00 b 57.00 95.00
1917 56.00 62.00 72.00 75.00 81.00 99.00 97.00 98.00 85.00 80.00 72.00 68.00 99.00
1918 64.00 68.00 74.00 71.00 82.00 94.00 97.00 96.00 85.00 81.00 72.00 65.00 97.00
1919 62.00 63.00 a 72.00 83.00 82.00 96.00 96.00 95.00 87.00 78.00 a 68.00 i 67.00 l 96.00
1920 65.00 66.00 69.00 67.00 87.00 91.00 b 96.00 92.00 89.00 83.00 b 74.00 64.00 a 96.00
1921 66.00 72.00 74.00 75.00 a 83.00 91.00 93.00 94.00 90.00 a 86.00 76.00 a 74.00 94.00
1922 60.00 64.00 69.00 73.00 83.00 97.00 98.00 95.00 92.00 b 88.00 63.00 62.00 98.00
1923 65.00 62.00 67.00 77.00 85.00 91.00 90.00 92.00 98.00 71.00 70.00 63.00 98.00
1924 61.00 69.00 58.00 76.00 81.00 96.00 94.00 96.00 84.00 76.00 73.00 69.00 96.00
1925 74.00 68.00 73.00 80.00 89.00 91.00 100.00 a 91.00 89.00 83.00 65.00 62.00 100.00
1926 58.00 63.00 67.00 75.00 86.00 91.00 95.00 96.00 90.00 86.00 68.00 71.00 96.00
1927 68.00 68.00 67.00 82.00 89.00 94.00 93.00 84.00 86.00 80.00 75.00 57.00 a 94.00
1928 67.00 62.00 72.00 75.00 87.00 90.00 95.00 94.00 90.00 85.00 73.00 70.00 95.00
1929 54.00 52.00 67.00 76.00 81.00 96.00 94.00 94.00 91.00 86.00 67.00 65.00 96.00
1930 58.00 70.00 68.00 83.00 86.00 95.00 97.00 92.00 88.00 79.00 70.00 61.00 97.00
1931 70.00 65.00 66.00 77.00 86.00 96.00 102.00 a 95.00 92.00 79.00 79.00 64.00 102.00
1932 58.00 75.00 68.00 82.00 88.00 89.00 95.00 95.00 89.00 84.00 70.00 62.00 95.00
1933 60.00 66.00 73.00 74.00 88.00 95.00 97.00 92.00 93.00 80.00 73.00 71.00 97.00
1934 63.00 74.00 69.00 79.00 88.00 97.00 100.00 96.00 90.00 87.00 75.00 71.00 100.00
1935 70.00 73.00 76.00 75.00 73.00 92.00 98.00 99.00 91.00 80.00 64.00 64.00 99.00
1936 64.00 70.00 70.00 77.00 85.00 98.00 97.00 102.00 88.00 80.00 ----- z 62.00 102.00
1937 46.00 59.00 65.00 82.00 83.00 95.00 94.00 93.00 88.00 79.00 70.00 68.00 95.00
1938 66.00 64.00 70.00 84.00 88.00 88.00 95.00 100.00 85.00 81.00 65.00 60.00 100.00
1939 62.00 61.00 70.00 82.00 88.00 92.00 97.00 90.00 89.00 75.00 65.00 68.00 97.00
1940 53.00 71.00 77.00 78.00 87.00 94.00 96.00 92.00 88.00 78.00 70.00 71.00 96.00
1941 56.00 64.00 68.00 63.00 88.00 90.00 93.00 92.00 a 86.00 73.00 73.00 70.00 93.00
1942 57.00 54.00 65.00 80.00 90.00 88.00 a 95.00 90.00 86.00 81.00 75.00 58.00 95.00
1943 67.00 71.00 79.00 82.00 86.00 93.00 99.00 93.00 88.00 78.00 74.00 59.00 99.00
1944 67.00 64.00 62.00 67.00 84.00 90.00 91.00 95.00 86.00 80.00 67.00 63.00 95.00
1945 61.00 68.00 74.00 78.00 84.00 88.00 93.00 93.00 93.00 78.00 73.00 57.00 93.00
1946 60.00 65.00 79.00 85.00 76.00 98.00 94.00 92.00 d 87.00 81.00 71.00 66.00 98.00
1947 60.00 64.00 69.00 76.00 86.00 90.00 101.00 g 101.00 97.00 90.00 65.00 72.00 101.00
1948 66.00 67.00 74.00 84.00 88.00 92.00 95.00 a 97.00 ----- z ----- z ----- z 52.00 v 97.00
1949 58.00 70.00 72.00 85.00 87.00 a 94.00 96.00 98.00 92.00 83.00 75.00 67.00 98.00
1950 67.00 71.00 72.00 82.00 87.00 96.00 92.00 94.00 94.00 89.00 74.00 67.00 96.00
1951 65.00 69.00 70.00 77.00 91.00 92.00 100.00 95.00 91.00 82.00 67.00 67.00 100.00
1952 61.00 68.00 65.00 79.00 85.00 100.00 98.00 96.00 a 95.00 84.00 79.00 68.00 100.00
1953 72.00 66.00 76.00 81.00 84.00 99.00 101.00 96.00 93.00 90.00 76.00 59.00 101.00
1954 70.00 79.00 71.00 82.00 93.00 104.00 104.00 98.00 91.00 84.00 c 74.00 70.00 104.00
1955 59.00 59.00 70.00 83.00 88.00 a 97.00 99.00 94.00 97.00 83.00 73.00 71.00 99.00
1956 69.00 63.00 76.00 77.00 86.00 98.00 95.00 95.00 93.00 88.00 75.00 68.00 98.00
1957 58.00 68.00 68.00 72.00 79.00 96.00 98.00 96.00 91.00 83.00 68.00 74.00 98.00
1958 64.00 71.00 65.00 81.00 89.00 97.00 98.00 99.00 93.00 85.00 72.00 64.00 99.00
1959 63.00 60.00 67.00 83.00 84.00 92.00 95.00 97.00 97.00 82.00 68.00 66.00 97.00
1960 65.00 63.00 75.00 83.00 87.00 95.00 96.00 97.00 96.00 84.00 74.00 69.00 97.00
1961 70.00 71.00 69.00 79.00 88.00 93.00 93.00 96.00 85.00 82.00 68.00 62.00 96.00
1962 65.00 75.00 73.00 82.00 88.00 92.00 94.00 98.00 88.00 86.00 71.00 68.00 98.00
1963 62.00 75.00 78.00 80.00 88.00 95.00 98.00 96.00 89.00 86.00 72.00 65.00 98.00
1964 64.00 62.00 74.00 80.00 92.00 94.00 98.00 95.00 90.00 86.00 73.00 67.00 98.00
1965 65.00 69.00 71.00 81.00 84.00 89.00 94.00 97.00 83.00 86.00 73.00 75.00 97.00
1966 69.00 57.00 77.00 80.00 88.00 95.00 97.00 96.00 88.00 81.00 71.00 66.00 97.00
1967 65.00 70.00 78.00 81.00 90.00 88.00 96.00 94.00 87.00 88.00 74.00 58.00 96.00
1968 70.00 61.00 75.00 77.00 84.00 96.00 95.00 91.00 90.00 83.00 74.00 66.00 96.00
1969 67.00 67.00 76.00 78.00 91.00 94.00 97.00 101.00 91.00 82.00 69.00 67.00 101.00
1970 65.00 69.00 68.00 78.00 87.00 92.00 92.00 94.00 86.00 80.00 69.00 66.00 94.00
1971 68.00 65.00 79.00 76.00 80.00 97.00 100.00 93.00 91.00 82.00 73.00 64.00 100.00
1972 61.00 71.00 76.00 76.00 83.00 91.00 96.00 95.00 87.00 81.00 57.00 67.00 96.00
1973 64.00 57.00 63.00 74.00 83.00 94.00 100.00 96.00 84.00 82.00 75.00 65.00 100.00
1974 71.00 62.00 73.00 83.00 90.00 95.00 95.00 91.00 92.00 83.00 70.00 62.00 95.00
1975 64.00 63.00 69.00 82.00 83.00 94.00 95.00 99.00 90.00 83.00 72.00 69.00 99.00
1976 65.00 69.00 69.00 74.00 83.00 92.00 99.00 92.00 91.00 80.00 70.00 63.00 99.00
1977 56.00 68.00 69.00 78.00 86.00 95.00 97.00 88.00 92.00 78.00 69.00 66.00 97.00
1978 55.00 60.00 76.00 76.00 93.00 a 95.00 98.00 93.00 93.00 86.00 78.00 ----- z 98.00
1979 52.00 74.00 68.00 81.00 ----- z ----- z 98.00 101.00 a ----- z 87.00 a 66.00 70.00 101.00
1980 63.00 72.00 67.00 83.00 84.00 99.00 ----- z 98.00 92.00 83.00 78.00 76.00 99.00
1981 71.00 74.00 70.00 84.00 86.00 96.00 97.00 94.00 86.00 77.00 75.00 69.00 97.00
1982 72.00 77.00 70.00 81.00 82.00 93.00 98.00 93.00 89.00 76.00 ----- z 69.00 98.00
1983 ----- z 69.00 k 69.00 74.00 88.00 93.00 96.00 96.00 100.00 80.00 a 74.00 54.00 100.00
1984 59.00 66.00 69.00 80.00 91.00 92.00 98.00 95.00 93.00 77.00 a 70.00 68.00 98.00
1985 56.00 64.00 78.00 85.00 86.00 98.00 97.00 96.00 87.00 77.00 a 71.00 64.00 98.00
1986 71.00 75.00 79.00 83.00 85.00 94.00 95.00 97.00 84.00 76.00 69.00 56.00 97.00
1987 65.00 74.00 71.00 84.00 84.00 92.00 95.00 95.00 90.00 84.00 69.00 65.00 95.00
1988 67.00 66.00 75.00 86.00 89.00 98.00 96.00 97.00 93.00 80.00 75.00 65.00 98.00
1989 69.00 68.00 79.00 88.00 91.00 94.00 100.00 ----- z ----- z ----- z ----- z ----- z 100.00
1990 ----- z ----- z ----- z 74.00 85.00 100.00 99.00 94.00 95.00 83.00 77.00 67.00 100.00
1991 58.00 65.00 69.00 80.00 84.00 95.00 96.00 91.00 85.00 87.00 69.00 63.00 96.00
1992 63.00 69.00 65.00 87.00 87.00 90.00 98.00 94.00 89.00 84.00 67.00 61.00 98.00
1993 61.00 57.00 72.00 75.00 83.00 94.00 96.00 ----- z 90.00 85.00 66.00 63.00 96.00
1994 61.00 62.00 76.00 87.00 91.00 101.00 98.00 96.00 90.00 77.00 a 73.00 67.00 101.00
1995 66.00 71.00 76.00 74.00 82.00 90.00 97.00 99.00 95.00 83.00 71.00 69.00 99.00
1996 69.00 70.00 70.00 82.00 93.00 89.00 94.00 99.00 91.00 87.00 73.00 68.00 99.00
1997 70.00 65.00 80.00 76.00 85.00 90.00 96.00 89.00 85.00 84.00 ----- z ----- z 96.00
1998 66.00 62.00 76.00 79.00 85.00 93.00 100.00 ----- z 94.00 78.00 ----- z ----- z 100.00
1999 ----- z ----- z ----- z ----- z 80.00 90.00 96.00 90.00 85.00 83.00 a 75.00 66.00 96.00
2000 64.00 66.00 73.00 79.00 95.00 96.00 98.00 97.00 93.00 84.00 56.00 58.00 98.00
2001 65.00 59.00 67.00 79.00 84.00 97.00 99.00 95.00 93.00 84.00 74.00 66.00 99.00
2002 69.00 74.00 70.00 80.00 90.00 97.00 101.00 100.00 92.00 77.00 70.00 65.00 101.00
2003 69.00 69.00 74.00 79.00 95.00 86.00 101.00 94.00 87.00 87.00 72.00 64.00 101.00
2004 61.00 67.00 77.00 78.00 87.00 95.00 96.00 92.00 90.00 75.00 74.00 63.00 96.00
2005 73.00 63.00 71.00 75.00 90.00 89.00 101.00 96.00 91.00 89.00 78.00 68.00 101.00
2006 69.00 74.00 71.00 83.00 92.00 100.00 100.00 94.00 86.00 84.00 77.00 70.00 100.00
2007 62.00 67.00 76.00 82.00 82.00 97.00 98.00 97.00 91.00 83.00 76.00 70.00 98.00
2008 64.00 65.00 73.00 80.00 82.00 90.00 98.00 99.00 86.00 81.00 78.00 67.00 99.00
2009 71.00 69.00 76.00 80.00 ----- z 89.00 95.00 96.00 89.00 83.00 77.00 57.00 96.00
2010 61.00 49.00 79.00 76.00 91.00 94.00 98.00 95.00 94.00 81.00 76.00 66.00 98.00
2011 68.00 66.00 75.00 82.00 a 86.00 95.00 98.00 98.00 94.00 86.00 69.00 61.00 98.00
2012 69.00 62.00 81.00 87.00 89.00 102.00 100.00 96.00 94.00 85.00 73.00 a 71.00 102.00
2013 65.00 61.00 a 76.00 a 64.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 76.00
Period of Record Statistics
MEAN 63.91 65.95 71.63 78.83 85.62 93.23 95.90 94.44 89.70 81.97 71.80 65.12 97.18
S.D. 5.11 5.55 5.15 4.30 3.87 3.86 3.11 3.31 3.58 3.97 4.10 4.64 2.62
SKEW -0.58 -0.34 -0.05 -0.58 -0.09 0.01 -0.26 -0.29 0.27 -0.11 -1.05 -0.38 -0.30
MAX 74.00 79.00 90.00 88.00 95.00 104.00 104.00 102.00 100.00 92.00 79.00 76.00 104.00
MIN 46.00 49.00 54.00 63.00 73.00 84.00 88.00 84.00 83.00 71.00 56.00 52.00 89.00
NO YRS 113 113 115 116 115 116 114 113 113 115 110 110 93