BOULDER, COLORADO

Monthly Average 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 64.00 50.63 48.73 a 54.46
1894 43.08 g 37.00 g 54.00 64.45 a ----- z ----- z 81.64 c 80.29 ----- z ----- z ----- z 41.61 64.40
1895 38.68 c 37.46 b 46.86 b 66.77 70.31 b 75.17 78.60 u ----- z ----- z ----- z ----- z ----- z 55.87
1896 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1897 ----- z ----- z ----- z ----- z 69.55 74.03 81.00 78.29 75.60 61.61 51.10 39.61 66.35
1898 39.87 48.25 45.65 59.83 60.84 77.10 81.94 84.23 73.70 60.39 47.27 39.23 59.86
1899 41.39 28.43 46.55 62.40 70.65 78.93 81.00 83.03 78.33 61.42 58.57 47.10 61.48
1900 48.97 43.82 56.06 56.27 71.52 81.87 82.52 84.74 73.13 69.42 57.97 50.48 64.73
1901 49.06 40.75 51.74 58.33 70.77 78.17 87.77 83.32 75.37 68.06 60.79 a 46.77 64.24
1902 43.16 49.86 49.84 61.13 70.77 79.87 81.87 84.19 74.83 65.87 a 53.80 47.35 63.55
1903 47.89 d 33.11 47.79 b 59.72 a 66.40 a 71.40 82.74 82.61 73.53 66.65 56.13 51.71 61.64
1904 43.74 54.61 a 56.94 61.40 66.81 72.03 79.68 83.03 76.53 67.19 61.07 48.06 64.26
1905 39.90 b 37.75 54.74 56.43 63.61 77.23 79.19 84.94 79.13 59.94 54.40 46.90 a 61.18
1906 50.42 50.00 39.06 62.07 69.35 75.03 77.26 80.77 a 73.40 64.61 48.83 51.90 61.89
1907 46.13 54.75 60.29 58.87 60.61 75.30 82.55 82.13 75.60 66.06 52.44 c 46.38 g 64.98
1908 48.23 50.28 57.45 65.77 67.77 76.47 81.03 78.71 78.80 59.61 49.40 45.06 63.22
1909 48.90 44.39 42.00 51.40 66.61 76.20 83.42 84.23 74.20 63.16 52.87 29.77 59.76
1910 41.97 42.71 65.23 66.53 67.06 80.13 ----- z ----- z 77.93 a 70.39 58.97 47.30 a 61.82
1911 51.87 42.93 59.58 62.77 71.71 82.63 80.65 83.94 78.93 60.84 50.83 ----- z 66.06
1912 ----- z ----- z 43.87 h 59.20 70.41 b 74.17 80.58 82.55 68.57 62.87 57.03 44.45 66.65
1913 44.13 35.89 49.10 62.57 68.03 78.27 82.32 83.93 a 72.83 61.16 58.57 39.32 61.34
1914 50.00 a 45.61 57.42 e 60.33 69.06 82.37 83.87 83.23 a 81.03 67.55 62.10 35.90 64.87
1915 43.00 47.96 42.77 63.13 66.97 75.90 81.42 76.94 74.79 a 69.42 56.23 46.10 b 62.05
1916 39.03 50.79 62.29 62.97 72.48 81.40 87.03 78.65 76.13 62.35 51.36 b 36.13 63.38
1917 40.13 44.43 43.35 57.03 60.61 82.53 90.42 83.65 77.67 66.10 60.03 51.90 63.15
1918 37.19 51.07 61.06 55.50 74.13 83.70 86.65 86.55 72.93 66.26 49.57 43.23 63.99
1919 47.65 44.33 a 52.74 62.83 71.87 83.70 87.77 86.87 78.70 63.87 a 50.48 i 52.53 l 68.03
1920 50.65 46.66 52.65 51.17 68.74 76.93 b 85.48 81.61 76.63 66.72 b 48.93 45.23 a 62.62
1921 46.00 50.14 59.65 58.79 a 70.13 78.83 86.39 84.10 80.62 a 72.65 59.17 a 49.16 66.30
1922 39.97 43.50 54.81 58.37 70.94 85.17 86.13 86.84 81.54 b 67.10 49.30 49.48 64.43
1923 49.39 41.64 45.84 59.73 67.61 76.33 82.77 79.39 73.70 53.23 53.67 44.90 60.68
1924 41.32 52.21 38.45 61.00 66.19 83.20 84.19 86.23 69.77 66.68 58.70 38.10 62.17
1925 43.87 55.29 59.84 64.90 70.84 79.30 86.33 a 80.42 76.93 50.97 51.23 43.35 63.61
1926 40.81 49.93 47.42 56.53 68.81 77.43 83.39 85.16 74.90 72.23 56.00 44.74 63.11
1927 51.03 51.93 51.32 63.60 75.35 77.53 84.68 79.06 76.17 70.52 59.30 40.83 a 65.11
1928 49.52 45.69 52.65 60.83 69.90 74.43 84.10 84.19 80.37 65.71 53.47 44.23 63.76
1929 39.26 36.46 52.00 59.67 69.48 83.33 88.39 86.42 72.53 66.74 45.97 51.65 62.66
1930 29.35 54.68 50.84 69.70 68.39 84.63 87.19 82.42 78.40 63.94 55.00 45.55 64.17
1931 48.10 50.93 49.97 61.33 69.29 85.30 90.53 a 86.23 82.87 68.13 51.80 46.90 65.95
1932 40.06 53.21 46.00 66.20 73.71 79.43 88.03 86.45 79.90 65.29 57.67 35.61 64.30
1933 47.77 42.61 56.65 60.23 67.29 86.10 89.61 82.23 80.63 73.39 61.23 56.94 67.06
1934 52.19 48.75 60.55 65.27 78.61 85.43 90.77 87.19 77.70 73.87 57.07 49.35 68.90
1935 53.23 52.96 57.26 59.13 59.87 79.53 87.71 84.97 77.73 65.97 48.80 47.23 64.53
1936 44.45 42.55 56.00 63.53 73.58 82.13 88.32 85.00 77.90 61.16 ----- z 46.97 65.60
1937 29.32 45.79 48.97 61.57 71.16 76.33 85.35 88.06 79.03 65.97 52.40 44.19 62.35
1938 45.74 47.07 53.42 61.63 64.06 78.70 85.06 85.87 76.57 66.55 46.83 43.61 62.93
1939 45.29 36.46 52.94 60.97 73.81 80.70 87.94 81.55 76.30 63.65 52.17 50.03 63.48
1940 34.10 44.55 54.16 57.63 70.13 82.37 84.23 81.68 72.17 65.00 44.70 41.45 61.01
1941 43.06 45.04 44.00 51.23 68.42 73.50 81.84 78.70 a 69.37 58.35 54.63 45.55 59.47
1942 41.19 34.68 47.94 62.77 68.65 77.31 a 85.68 82.42 72.37 60.26 54.80 48.10 61.35
1943 46.03 52.82 49.10 67.20 64.52 77.80 87.61 86.13 75.80 66.48 55.13 44.16 64.40
1944 42.48 42.76 44.48 52.77 68.48 76.53 82.13 83.71 74.40 65.48 52.17 44.45 60.82
1945 44.06 43.25 53.23 52.47 68.68 72.27 83.90 82.90 71.90 68.03 54.40 42.48 61.46
1946 44.48 49.54 58.23 68.23 61.65 82.03 84.48 83.44 d 74.67 59.74 47.47 50.00 63.66
1947 43.42 43.25 47.81 57.23 65.65 75.27 89.96 g 89.32 83.77 70.29 46.63 48.06 60.97
1948 43.35 42.03 47.42 66.77 72.90 81.43 89.83 a 88.77 ----- z ----- z ----- z 37.56 v 66.56
1949 34.13 46.79 54.90 66.50 73.13 a 80.57 88.48 88.13 80.83 65.68 66.77 50.06 66.33
1950 46.13 54.50 54.10 64.20 68.48 84.07 84.71 85.55 74.27 77.35 56.07 52.39 66.82
1951 42.48 49.32 50.39 59.37 72.65 75.53 89.19 85.16 78.03 64.71 53.70 42.71 63.60
1952 47.87 50.21 47.81 63.50 71.26 89.60 89.71 87.37 a 83.07 72.10 48.83 47.55 66.57
1953 55.23 48.25 59.71 57.40 67.81 85.77 89.16 87.42 84.90 70.68 57.93 47.06 67.61
1954 53.35 61.18 49.19 71.17 72.00 87.23 92.77 88.55 81.07 67.82 c 59.60 52.84 69.73
1955 42.35 42.29 51.55 67.23 74.03 a 78.67 91.19 87.45 80.33 71.68 51.77 49.48 65.67
1956 48.26 41.86 56.13 62.20 75.52 89.93 87.55 84.97 84.47 72.90 54.13 51.45 67.45
1957 38.97 54.86 53.71 55.53 66.26 81.60 88.61 88.00 78.27 65.03 50.60 56.03 64.79
1958 48.71 51.79 43.29 57.27 76.94 84.37 85.29 88.26 80.57 70.77 56.77 48.90 66.08
1959 45.19 42.29 53.26 59.97 69.45 85.30 86.87 87.03 74.83 63.74 55.83 51.48 64.60
1960 43.03 38.45 52.42 65.77 72.77 85.33 87.74 88.35 80.57 67.65 57.57 47.42 65.59
1961 50.03 52.11 50.97 61.80 71.61 80.60 86.32 85.55 70.57 66.16 49.73 41.55 63.92
1962 39.10 46.21 49.61 66.63 74.35 79.90 86.26 88.19 77.80 71.39 59.03 50.90 65.78
1963 36.87 52.86 53.81 65.47 77.03 83.60 91.03 82.65 81.47 72.74 58.13 46.55 66.85
1964 47.55 43.69 49.23 62.57 73.94 79.17 91.26 85.32 79.20 70.39 53.60 48.00 65.33
1965 49.94 45.86 43.39 64.70 72.06 78.17 86.23 83.74 68.80 72.52 58.60 50.65 64.55
1966 44.81 43.79 60.58 62.57 77.87 81.37 91.16 85.19 78.23 68.97 56.37 46.32 66.44
1967 49.42 51.50 60.81 65.87 67.74 73.87 85.42 83.65 77.93 70.26 54.63 39.90 65.08
1968 46.71 48.24 57.71 58.87 68.97 84.87 85.97 83.39 78.57 70.10 49.77 44.94 64.84
1969 49.42 48.93 47.45 67.57 74.32 73.73 89.06 88.71 80.37 52.87 54.40 47.58 64.53
1970 45.74 55.32 48.45 58.30 74.65 78.67 85.97 86.52 73.93 58.90 52.00 46.58 63.75
1971 45.94 44.57 53.55 61.07 67.13 84.07 86.13 86.32 73.13 63.74 53.70 44.77 63.68
1972 46.26 52.83 61.03 62.67 70.19 82.43 85.19 83.06 75.97 65.19 44.97 40.45 64.19
1973 41.19 46.96 50.35 55.90 69.32 82.83 84.29 88.10 73.30 69.94 51.27 46.94 63.37
1974 41.77 51.00 59.45 61.20 77.00 83.47 88.39 83.39 75.17 67.32 51.87 43.81 65.32
1975 45.48 46.07 51.87 58.07 67.84 78.70 87.13 86.32 75.00 70.61 51.53 49.84 64.04
1976 46.10 53.66 52.06 62.07 69.68 82.10 88.48 84.42 73.97 64.32 52.03 50.06 64.91
1977 42.26 51.36 53.74 63.10 74.48 86.73 88.16 82.13 81.53 69.13 53.70 49.84 66.35
1978 38.61 39.89 56.61 62.77 70.60 a 81.43 89.42 85.35 81.07 69.55 52.37 ----- z 66.15
1979 35.68 50.50 54.29 63.87 ----- z ----- z 88.94 81.13 a ----- z 70.90 a 46.93 52.32 60.51
1980 40.84 49.24 51.55 61.47 68.81 89.53 ----- z 87.10 81.40 67.06 56.53 57.16 64.61
1981 52.16 53.79 55.06 71.23 66.97 84.93 87.58 82.55 79.00 62.74 57.27 48.16 66.79
1982 47.32 49.57 57.61 65.60 69.32 76.20 86.19 86.29 73.23 63.77 ----- z 47.00 65.65
1983 ----- z 57.41 k 49.90 55.70 66.16 77.20 87.32 90.16 82.70 70.30 a 54.13 31.68 66.53
1984 43.55 48.86 53.29 56.87 76.19 80.27 89.10 85.58 75.97 57.97 a 54.90 48.13 64.22
1985 38.97 43.36 55.65 65.47 74.65 83.80 85.94 89.03 73.47 66.83 a 41.50 43.90 63.55
1986 57.06 49.46 62.19 64.10 71.16 83.70 86.29 84.90 72.63 63.58 53.27 44.97 66.11
1987 45.61 48.14 52.65 68.00 71.74 83.70 88.65 82.87 77.13 67.94 52.97 41.74 65.09
1988 40.94 49.48 54.16 66.53 73.45 85.70 88.39 86.90 77.30 69.77 54.20 45.35 66.02
1989 49.55 35.29 60.10 65.03 74.00 78.63 89.48 ----- z ----- z ----- z ----- z ----- z 64.58
1990 ----- z ----- z ----- z 60.57 68.90 86.43 81.65 82.81 77.87 68.68 57.77 40.39 69.45
1991 42.32 53.21 55.10 59.93 71.65 79.90 83.97 82.35 75.67 66.55 47.23 46.94 63.73
1992 48.23 52.17 54.77 68.10 73.03 76.43 82.97 79.97 79.43 68.35 45.50 41.42 64.20
1993 39.03 40.96 53.97 60.20 70.45 79.30 84.32 ----- z 73.57 61.58 48.10 47.03 59.87
1994 47.39 45.21 57.52 61.50 77.03 86.83 86.29 85.00 79.67 63.27 a 47.90 48.35 65.50
1995 46.94 51.89 55.23 57.20 62.35 76.07 86.00 89.81 73.67 66.61 57.77 48.32 64.32
1996 42.84 51.00 51.13 64.13 73.35 82.03 85.35 85.19 75.40 66.68 53.70 49.10 64.99
1997 43.61 43.21 60.74 55.53 71.55 80.27 86.00 81.45 76.80 66.45 ----- z ----- z 66.56
1998 48.65 47.96 52.10 59.13 74.16 77.57 86.58 ----- z 82.30 62.77 ----- z ----- z 65.69
1999 ----- z ----- z ----- z ----- z 69.90 80.10 87.97 82.77 73.13 66.87 a 63.40 49.42 71.70
2000 47.65 54.07 56.00 67.57 76.55 82.70 89.84 88.23 79.03 62.45 43.37 43.52 65.91
2001 44.19 43.71 52.45 64.00 72.19 84.50 89.90 86.13 80.53 68.81 57.20 47.10 65.89
2002 45.13 50.61 52.74 68.43 71.16 87.10 93.42 87.84 77.60 58.19 52.57 48.29 66.09
2003 53.87 43.14 56.39 63.97 71.61 76.23 92.39 87.32 75.63 73.48 49.77 48.29 66.01
2004 47.32 45.76 62.77 61.37 74.23 76.20 83.55 80.97 77.87 64.97 50.57 48.29 64.49
2005 47.19 49.68 53.90 61.73 70.65 79.90 91.61 84.23 81.60 66.94 58.40 45.77 65.97
2006 53.26 46.39 52.32 69.67 76.00 88.77 88.81 85.26 72.87 63.48 56.43 46.29 66.63
2007 39.65 47.43 60.97 60.57 72.65 84.57 90.32 88.81 79.57 69.71 58.73 42.00 66.25
2008 43.42 49.52 54.42 63.03 71.58 81.97 92.00 84.42 76.20 66.00 59.53 45.00 65.59
2009 50.26 52.39 59.06 60.67 ----- z 76.30 84.45 84.74 78.27 57.06 56.80 37.84 63.44
2010 44.87 41.11 55.77 62.23 67.81 81.53 88.06 87.32 84.03 69.06 52.33 50.00 65.35
2011 45.03 45.75 59.29 62.83 a 65.94 83.90 88.65 91.65 78.17 68.26 54.93 45.06 65.79
2012 52.10 43.86 65.84 69.23 76.29 91.17 89.71 89.00 80.97 64.55 60.10 a 46.26 69.09
2013 46.26 44.48 a 54.40 a 64.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 48.38
Period of Record Statistics
MEAN 44.91 46.93 53.27 61.85 70.39 80.60 86.36 84.70 77.05 66.08 53.82 46.11 64.42
S.D. 5.02 5.53 5.44 4.24 3.87 4.26 3.26 2.89 3.54 4.52 4.61 4.65 2.02
SKEW -0.41 -0.54 -0.26 -0.22 -0.41 0.13 -0.25 -0.27 -0.07 -0.63 -0.13 -0.69 -0.15
MAX 57.06 61.18 65.84 71.23 78.61 91.17 93.42 91.65 84.90 77.35 66.77 57.16 69.73
MIN 29.32 28.43 38.45 51.17 59.87 71.40 77.26 76.94 68.57 50.97 41.50 29.77 59.47
NO YRS 113 113 115 116 115 116 114 113 113 115 110 110 95