DAYTON 1 WSW, WASHINGTON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(452030)

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 53.63 66.45 74.07 83.00 e ----- z 73.60 60.90 48.60 47.29 63.44
1894 41.42 40.64 51.16 ----- z ----- z 73.83 90.74 89.06 71.37 ----- z ----- z ----- z 65.46
1895 ----- z ----- z ----- z 66.23 ----- z ----- z ----- z 85.39 67.33 67.94 ----- z ----- z 71.72
1896 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.27 46.42 43.84
1897 38.45 45.54 46.58 64.03 76.00 74.17 ----- z 89.74 72.53 65.03 47.08 d 40.90 60.01
1898 37.32 52.04 48.94 64.10 69.32 76.73 ----- z ----- z 77.53 62.10 44.93 33.55 56.66
1899 42.32 36.79 49.10 59.27 o 63.61 74.13 87.90 74.68 78.50 57.48 57.90 45.00 60.67
1900 49.23 41.00 58.42 64.80 73.97 82.13 87.97 79.55 75.20 65.52 49.13 48.39 64.61
1901 39.45 41.57 55.45 60.60 70.32 74.47 89.90 95.38 e ----- z ----- z ----- z ----- z 65.89
1902 38.13 48.68 ----- z 60.40 65.94 75.13 ----- z ----- z ----- z ----- z ----- z ----- z 57.66
1903 ----- z ----- z 52.29 58.20 68.81 81.80 80.48 81.52 71.63 67.48 50.77 39.39 65.24
1904 44.00 46.17 48.06 65.27 ----- z 74.47 81.74 87.52 78.90 68.13 59.90 44.48 63.51
1905 39.68 43.29 56.74 64.10 65.29 72.77 87.55 84.97 75.20 57.42 53.73 41.65 61.86
1906 45.32 43.86 51.03 68.13 67.81 73.13 92.00 83.77 ----- z ----- z ----- z ----- z 65.63
1907 ----- z ----- z ----- z ----- z 69.94 70.87 80.74 75.19 70.67 69.13 53.83 44.68 66.88
1908 43.23 44.52 d 51.78 d 62.04 e 66.55 b 73.86 a 86.68 83.54 e 76.93 61.61 56.50 40.06 62.28
1909 34.94 46.89 56.55 58.40 66.81 76.30 80.84 83.71 75.43 64.26 51.50 33.00 60.72
1910 39.45 37.29 60.35 ----- z 72.71 75.13 86.03 80.74 72.87 65.26 48.63 42.42 61.90
1911 42.23 39.46 58.71 61.50 64.77 74.67 84.87 81.68 68.47 63.97 49.77 42.77 61.07
1912 40.42 44.97 49.61 59.97 69.19 75.60 81.16 77.87 70.50 59.42 52.97 43.87 60.46
1913 38.52 36.68 48.23 62.03 69.48 73.37 81.77 83.23 75.73 58.52 51.63 38.65 59.82
1914 49.97 40.79 55.29 61.37 69.77 71.63 88.10 85.29 70.57 62.90 51.50 33.58 61.73
1915 36.68 52.11 60.13 65.73 68.97 78.70 85.13 93.58 74.37 65.39 48.73 45.52 64.59
1916 27.10 38.41 54.19 62.77 65.23 77.17 82.16 88.23 76.60 65.03 43.60 36.71 59.77
1917 39.10 41.07 45.03 55.37 67.42 77.90 91.61 91.74 80.62 f 69.71 56.70 49.58 62.29
1918 44.65 43.57 56.29 63.57 64.61 86.67 88.23 82.74 83.10 67.06 48.53 42.06 64.26
1919 46.29 42.18 54.77 64.33 71.74 79.67 91.48 90.35 75.93 58.42 45.77 32.35 62.77
1920 37.35 45.10 50.74 57.23 68.03 76.90 91.74 87.87 75.13 63.06 50.17 45.00 62.36
1921 43.32 48.07 54.68 59.90 72.68 82.77 88.90 88.90 69.90 70.42 52.37 37.06 64.08
1922 31.77 38.61 50.32 57.57 71.61 89.37 93.39 82.94 78.97 64.42 40.83 36.26 61.34
1923 42.87 34.68 53.35 63.93 68.97 72.00 86.55 84.77 76.30 59.42 47.97 38.61 60.79
1924 34.42 51.83 49.61 61.47 78.00 78.50 84.77 81.81 74.37 62.23 43.37 33.00 61.11
1925 45.23 50.96 54.77 65.60 72.39 80.10 90.55 83.35 72.77 61.45 47.73 44.74 64.14
1926 38.65 52.61 59.16 69.17 70.10 82.60 89.16 88.10 68.33 64.45 51.37 42.03 64.64
1927 36.23 46.89 50.74 59.60 63.48 77.87 87.19 84.77 67.83 63.65 50.90 36.48 60.47
1928 36.74 43.79 54.81 58.30 77.39 78.53 88.55 83.61 77.23 62.48 50.07 38.52 62.50
1929 28.06 33.32 54.00 58.00 72.06 80.83 85.03 89.23 72.73 67.90 51.70 47.10 61.66
1930 23.65 50.79 54.00 67.37 67.42 76.03 87.00 88.81 75.17 56.61 47.03 36.48 60.86
1931 43.67 a 43.86 52.19 60.23 73.74 76.50 88.58 87.32 73.60 64.00 43.50 40.00 62.27
1932 39.23 42.07 49.74 61.93 67.94 79.27 82.97 83.58 78.03 64.45 53.57 36.90 61.64
1933 41.81 36.82 53.52 60.10 63.61 76.70 87.77 86.74 72.03 67.84 50.50 48.58 62.17
1934 50.23 51.00 61.10 70.07 74.77 79.27 88.16 89.00 74.10 64.32 49.33 39.48 65.90
1935 43.61 45.68 48.84 57.60 70.45 78.07 86.84 85.35 82.53 66.77 44.60 37.42 62.31
1936 41.74 28.55 52.48 66.23 76.68 79.70 87.81 85.71 76.33 69.94 48.93 46.45 63.38
1937 26.39 43.89 56.77 58.57 72.48 77.70 88.68 82.10 79.03 68.42 53.57 43.06 62.56
1938 40.61 43.18 52.42 62.47 70.00 80.73 88.97 83.13 83.37 65.10 45.77 43.48 63.27
1939 46.55 41.86 53.81 65.70 72.94 74.63 87.68 88.48 78.90 65.00 57.17 49.10 65.15
1940 39.55 47.55 58.10 61.03 75.45 83.40 85.81 86.90 76.80 66.32 42.90 44.55 64.03
1941 41.39 50.61 60.26 64.57 67.35 74.20 89.55 83.16 68.10 58.68 54.80 44.81 63.12
1942 29.94 42.86 54.55 64.33 65.68 72.93 87.68 89.26 79.70 67.94 46.57 44.81 62.19
1943 33.97 a 43.86 50.26 64.40 64.71 73.60 87.97 84.03 82.43 64.97 46.97 37.65 61.23
1944 40.94 42.62 51.13 62.90 71.48 76.80 88.20 a 86.06 80.37 72.68 47.47 34.77 62.95
1945 41.58 46.07 49.35 57.77 70.39 75.57 89.61 88.16 72.40 67.65 48.77 40.58 62.32
1946 43.71 47.75 51.77 64.27 71.77 74.60 86.23 87.61 73.87 57.29 47.62 a 43.90 62.53
1947 39.26 48.61 57.61 62.87 76.45 74.40 86.06 83.52 76.37 63.03 46.30 43.65 63.18
1948 40.94 42.86 49.52 56.50 64.71 79.27 81.90 81.29 75.10 63.65 48.97 36.06 60.06
1949 26.00 41.32 52.39 67.07 74.55 77.50 85.06 84.94 77.17 59.16 54.77 42.10 61.83
1950 25.43 a 43.86 49.06 58.37 67.94 73.57 86.10 86.39 78.63 62.61 48.63 44.77 60.45
1951 39.26 44.71 48.74 65.53 71.90 77.57 90.10 86.74 78.57 59.32 48.93 36.87 62.35
1952 37.58 46.55 51.32 68.67 72.87 77.60 90.55 87.71 82.63 73.29 44.10 42.13 64.58
1953 52.10 48.04 54.65 59.77 67.97 71.73 89.74 86.19 82.37 67.16 54.53 45.55 64.98
1954 41.03 44.00 51.55 60.43 73.00 74.00 87.23 81.61 75.97 63.16 55.07 42.19 62.44
1955 39.74 43.18 47.00 55.77 64.71 77.60 82.10 84.90 75.20 63.42 40.97 39.13 59.48
1956 41.81 35.07 52.03 65.50 71.42 74.43 87.68 82.97 77.27 59.77 43.17 43.19 61.19
1957 26.90 42.43 52.00 62.17 71.32 76.53 82.68 80.13 78.33 57.35 51.03 48.10 60.75
1958 43.97 55.64 53.32 58.00 76.00 79.97 92.19 92.94 75.30 67.97 50.20 43.26 65.73
1959 43.03 41.32 52.55 61.97 64.39 76.87 88.45 81.30 a 70.93 62.52 48.03 41.26 61.05
1960 33.39 46.59 52.94 60.23 65.26 78.33 93.16 80.45 77.97 65.61 51.10 36.58 61.80
1961 43.13 51.32 53.58 58.70 67.26 85.87 90.10 92.90 72.83 62.39 46.60 42.06 63.90
1962 40.16 46.75 49.74 63.97 61.26 76.00 85.26 80.19 78.47 62.87 51.83 45.13 61.80
1963 35.13 50.86 54.94 57.03 70.42 75.90 81.74 86.97 82.03 68.81 51.87 37.00 62.72
1964 46.55 48.66 49.84 57.53 66.68 74.93 86.23 80.16 74.27 64.35 46.30 39.90 61.28
1965 40.13 48.39 51.42 62.93 67.39 76.87 86.55 84.48 71.93 70.68 53.47 44.19 63.20
1966 42.42 46.54 54.71 62.33 73.16 74.27 83.13 85.45 79.70 64.45 53.87 47.06 63.92
1967 48.00 a 50.21 50.87 54.80 67.29 80.23 89.71 94.16 84.20 66.03 50.17 42.48 64.85
1968 45.32 49.72 58.55 57.30 69.94 77.77 90.77 80.39 75.63 62.13 49.40 40.74 63.14
1969 29.29 42.18 54.32 60.90 72.55 81.50 85.68 84.19 77.60 59.32 53.50 41.06 61.84
1970 42.64 i 47.21 50.97 54.17 69.27 a 82.23 89.35 89.55 70.03 62.00 50.13 43.94 64.44
1971 45.32 49.07 48.32 58.63 71.16 69.17 88.77 93.68 71.37 61.94 49.77 43.97 62.60
1972 47.00 z 43.24 55.26 57.10 72.16 78.00 85.55 89.29 73.00 63.58 51.00 36.03 64.02
1973 39.77 47.21 54.10 61.10 73.29 ----- z 89.33 d 84.81 75.43 63.45 46.93 47.74 62.11
1974 35.84 49.82 53.26 58.33 64.13 81.60 86.00 86.77 82.10 ----- z 51.37 45.26 63.13
1975 40.80 a 42.93 49.58 54.80 67.55 73.67 89.45 80.68 80.73 61.42 50.20 44.65 61.37
1976 45.03 45.14 49.42 59.23 71.68 73.93 86.19 80.52 82.03 67.03 49.77 43.10 62.76
1977 31.58 48.18 50.10 66.87 63.35 83.50 84.39 90.35 71.03 63.03 48.67 41.10 61.85
1978 39.74 46.36 56.42 58.50 65.13 80.27 86.10 81.97 71.77 67.55 43.93 37.97 61.31
1979 23.71 44.18 56.10 59.03 70.19 80.43 88.55 87.29 82.18 b 68.66 b 44.63 46.97 62.66
1980 34.94 45.59 50.03 66.31 a 69.00 71.52 a 87.55 83.26 77.10 65.52 50.17 46.94 62.33
1981 41.94 47.00 56.94 59.60 67.10 70.53 85.25 c 93.00 79.60 62.52 54.17 44.52 63.51
1982 40.58 45.43 52.97 57.80 69.29 81.43 85.94 86.06 75.53 62.35 44.27 41.48 61.93
1983 49.06 51.79 56.19 61.53 72.39 75.67 81.65 89.13 72.33 64.81 52.90 31.23 63.22
1984 43.06 45.90 54.65 58.63 64.87 72.87 88.84 88.77 73.67 60.61 48.83 35.45 61.35
1985 28.77 a 40.89 53.32 63.97 71.97 79.30 93.81 81.52 67.50 60.26 33.90 25.42 58.38
1986 41.48 45.11 57.23 59.00 68.52 84.43 80.45 92.29 70.10 67.48 48.27 37.48 62.65
1987 38.06 48.21 55.48 67.80 73.26 81.90 83.16 85.13 83.03 70.29 52.90 40.32 64.96
1988 38.68 48.86 54.23 62.97 69.45 76.07 86.94 86.48 76.83 72.26 51.73 39.84 63.69
1989 43.45 32.89 50.65 64.30 67.45 80.67 86.48 81.61 79.40 63.81 52.53 38.94 61.85
1990 44.74 44.50 55.55 65.70 66.23 75.70 90.58 85.68 84.13 61.06 52.93 34.94 63.48
1991 37.97 54.25 50.39 60.37 63.97 71.50 85.71 89.16 81.10 65.84 47.40 42.55 62.52
1992 44.90 51.00 59.23 64.13 76.10 83.83 82.90 87.00 72.23 65.00 45.43 40.71 64.37
1993 32.71 37.46 51.42 59.33 73.81 73.60 75.74 81.97 78.97 67.61 44.90 41.81 59.94
1994 48.58 42.11 58.87 64.37 71.61 77.27 89.87 86.39 80.93 62.26 46.43 43.94 64.39
1995 42.52 51.00 54.48 59.40 70.03 74.00 85.16 81.39 79.43 59.03 52.83 40.03 62.44
1996 41.87 40.97 51.32 62.50 63.26 76.33 89.35 86.87 72.70 62.00 47.63 42.94 61.48
1997 40.65 44.96 53.74 58.60 72.06 75.43 84.00 88.32 78.40 63.19 50.67 41.16 62.60
1998 45.77 52.36 55.16 61.20 66.84 77.77 93.19 88.97 82.60 64.42 52.07 43.61 65.33
1999 47.81 49.00 54.45 60.23 68.00 77.00 86.23 87.84 78.70 65.35 56.60 44.00 64.60
2000 41.32 47.34 54.13 67.10 70.13 77.37 86.26 84.10 73.50 62.65 42.83 37.03 61.98
2001 38.00 43.64 56.87 58.10 73.39 74.73 85.45 89.97 81.47 63.32 53.37 42.61 63.41
2002 43.68 48.96 48.10 61.50 68.74 79.77 90.23 84.03 77.43 61.81 49.90 44.32 63.21
2003 45.68 47.68 55.35 60.67 68.45 82.00 92.03 87.87 79.20 68.68 47.43 42.13 64.76
2004 33.26 47.24 60.10 65.83 68.26 79.67 89.71 87.87 73.63 64.39 50.77 44.39 63.76
2005 44.32 51.61 58.55 63.17 71.03 75.33 ----- z ----- z ----- z ----- z ----- z ----- z 60.67
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 37.71 44.46 58.29 55.71 f 66.90 k ----- z ----- z ----- z ----- z ----- z 35.57 ----- z 44.01
2008 ----- z 38.66 ----- z 45.48 e 58.07 a ----- z ----- z ----- z ----- z ----- z 53.37 37.03 46.52
2009 38.10 43.82 47.29 60.10 70.35 76.90 89.20 a 86.06 80.13 57.48 51.63 33.74 61.24
2010 45.55 50.18 56.52 58.90 63.39 72.60 86.48 85.13 73.63 63.55 45.30 41.32 61.88
2011 41.55 42.18 52.06 53.90 63.97 70.32 e 83.16 86.90 81.33 i 61.10 49.53 38.84 58.50
2012 43.06 44.10 51.23 63.43 67.45 72.57 86.94 89.29 79.20 62.58 61.30 43.13 a 63.69
2013 33.96 c 46.75 53.68 c ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.80
Period of Record Statistics
MEAN 39.80 45.05 53.30 61.32 69.31 77.03 86.97 85.69 76.13 64.08 49.43 41.25 62.53
S.D. 5.93 4.81 3.46 3.89 3.78 3.74 3.31 3.90 4.18 3.59 4.43 4.36 1.52
SKEW -0.77 -0.57 0.16 -0.44 -0.06 0.56 -0.45 -0.03 -0.06 0.17 -0.43 -0.62 0.04
MAX 52.10 55.64 61.10 70.07 78.00 89.37 93.81 95.38 84.20 73.29 61.30 49.58 65.90
MIN 23.65 28.55 45.03 45.48 58.07 69.17 75.74 74.68 67.33 56.61 33.90 25.42 58.38
NO YRS 112 115 114 113 114 114 111 112 110 110 113 112 96