DAYTON 1 WSW, WASHINGTON

Monthly Average 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 44.75 54.34 58.93 67.37 e ----- z 59.72 49.47 39.23 39.90 51.71
1894 33.40 32.14 42.47 ----- z ----- z 61.88 73.06 73.37 59.25 ----- z ----- z ----- z 53.65
1895 ----- z ----- z ----- z 53.27 ----- z ----- z ----- z 69.35 54.75 51.31 ----- z ----- z 57.17
1896 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.95 39.73 36.84
1897 31.50 38.04 37.94 52.40 62.08 62.48 ----- z 72.89 60.03 51.27 39.27 d 34.31 49.29
1898 31.02 43.73 39.77 52.22 55.63 63.03 ----- z ----- z 61.10 49.81 38.03 26.21 46.06
1899 34.81 28.82 40.81 45.45 s 51.89 59.10 69.73 61.71 62.27 46.84 47.28 37.18 49.13
1900 39.63 32.95 47.65 a 51.42 58.45 66.63 68.16 69.92 61.35 51.39 38.88 39.15 52.13
1901 31.11 32.66 45.37 46.47 57.70 a 58.15 68.42 72.44 e ----- z ----- z ----- z ----- z 51.54
1902 31.61 39.27 ----- z 48.53 53.77 62.34 b ----- z ----- z ----- z ----- z ----- z ----- z 47.11
1903 ----- z ----- z 42.29 47.30 55.65 67.65 66.27 66.55 59.40 53.42 42.37 33.95 53.48
1904 37.11 38.31 40.11 53.67 ----- z 62.30 68.81 71.94 64.68 54.66 47.17 36.84 52.33
1905 34.02 33.32 46.55 52.22 53.90 62.12 72.18 68.63 62.12 46.97 41.30 35.02 50.69
1906 37.95 38.20 40.34 54.13 55.71 60.75 76.89 69.16 ----- z ----- z ----- z ----- z 54.14
1907 ----- z ----- z ----- z ----- z 58.06 60.53 68.05 63.73 59.45 55.92 44.00 a 38.21 55.99
1908 36.24 37.80 d 43.33 d 49.82 e 54.36 b 61.14 a 72.40 69.85 e 62.90 51.05 45.35 33.71 51.50
1909 25.98 40.43 44.84 46.92 54.50 63.23 66.90 67.82 62.37 52.47 43.47 27.73 49.72
1910 30.79 29.00 49.40 ----- z 60.18 62.60 70.58 69.00 62.13 56.77 42.43 36.48 51.76
1911 34.71 30.64 46.00 48.47 53.58 62.86 b 71.48 66.79 57.22 50.79 39.48 35.61 49.80
1912 33.00 38.60 39.65 49.05 57.31 63.62 67.95 65.35 58.07 47.79 44.20 36.50 50.09
1913 30.58 28.54 39.56 50.40 57.68 62.73 68.84 71.03 61.73 48.10 43.88 30.87 49.50
1914 42.52 35.04 46.13 50.40 57.87 60.92 73.48 70.40 58.92 51.35 42.28 26.48 51.32
1915 30.42 41.79 47.56 53.28 57.29 63.78 69.79 75.16 59.47 52.27 40.80 37.23 52.40
1916 17.82 31.97 44.92 50.95 a 53.76 b 63.25 69.00 71.68 62.35 51.35 35.33 29.48 48.49
1917 32.52 34.98 37.15 47.20 56.52 62.63 73.82 75.05 65.06 f 54.97 46.08 43.74 51.33
1918 38.27 36.45 46.45 50.93 52.55 70.10 72.26 68.05 67.20 57.00 40.28 35.65 52.93
1919 36.60 36.02 45.26 52.85 57.00 62.13 73.31 72.87 61.42 47.16 38.02 23.29 50.49
1920 30.84 36.62 41.92 46.78 54.18 62.62 73.95 71.65 a 61.15 51.52 41.22 38.13 50.88
1921 36.11 39.77 45.56 49.15 58.31 67.43 70.00 70.68 57.00 55.42 a 42.60 30.23 51.85
1922 24.34 31.86 41.27 46.82 56.97 71.83 75.53 69.45 65.57 53.97 34.95 30.13 a 50.22
1923 37.95 27.61 43.71 51.05 56.44 60.58 70.56 68.16 62.17 49.48 40.63 33.68 50.17
1924 27.60 43.97 40.87 48.88 62.98 64.37 68.08 66.24 60.97 51.60 38.00 25.23 49.90
1925 39.00 43.70 44.39 53.38 59.40 65.78 73.81 67.66 60.18 49.58 40.08 38.37 52.94
1926 33.63 44.18 46.65 56.18 57.34 67.38 72.37 70.16 55.23 52.92 42.93 34.60 52.80
1927 29.48 39.82 41.98 48.53 52.50 64.27 70.37 69.21 57.17 52.06 44.83 28.42 49.89
1928 30.69 35.34 45.44 47.67 62.08 63.75 72.52 67.85 60.93 51.63 41.30 31.60 50.90
1929 20.66 23.12 44.61 46.52 59.39 69.57 j 68.34 71.69 58.70 52.63 39.05 39.26 47.63
1930 12.68 43.02 44.52 55.10 54.69 61.63 70.58 71.82 61.82 46.63 38.48 30.74 49.31
1931 37.38 a 36.59 43.52 49.00 59.68 64.12 71.29 69.92 59.38 50.08 35.75 31.89 50.72
1932 31.95 34.24 42.23 50.48 55.87 64.65 67.68 67.79 61.85 52.10 45.40 29.03 50.27
1933 35.44 29.16 43.79 49.13 52.21 62.92 70.42 70.10 58.20 55.16 41.98 42.02 50.88
1934 42.65 41.77 49.74 57.67 60.61 65.13 70.39 71.69 59.73 53.45 44.63 35.42 54.41
1935 35.02 37.96 40.15 46.83 56.92 64.37 69.84 68.85 65.40 53.35 36.20 32.32 50.60
1936 36.08 20.16 42.84 54.65 62.77 66.32 70.95 70.16 61.07 54.23 35.63 38.50 51.11
1937 15.50 34.95 46.00 48.22 58.34 64.98 73.15 66.85 63.58 55.31 45.03 37.24 50.76
1938 34.42 36.50 43.52 50.92 56.90 66.25 73.16 67.05 67.25 53.19 37.45 36.11 51.89
1939 38.87 34.09 44.95 52.27 58.77 61.45 71.66 71.18 63.48 52.79 44.75 41.06 52.94
1940 32.98 40.95 47.74 50.98 61.08 68.17 70.79 69.92 64.58 54.92 34.83 35.76 52.73
1941 34.24 40.68 47.82 53.02 55.97 61.62 73.60 69.68 57.95 48.85 44.37 37.85 52.14
1942 21.44 35.68 43.84 52.27 54.39 60.60 71.95 72.53 64.15 53.73 39.65 37.92 50.68
1943 26.58 a 37.09 40.56 53.05 53.53 60.45 71.24 67.94 65.02 52.89 39.28 32.45 50.01
1944 32.90 35.69 41.08 50.83 57.87 63.22 71.07 a 69.50 65.23 56.44 39.75 30.47 51.17
1945 36.48 39.16 41.06 47.33 57.92 61.72 72.29 71.45 59.42 54.13 41.42 33.06 51.29
1946 36.66 39.95 43.58 51.68 57.71 61.73 70.24 70.16 60.43 47.27 39.31 a 36.90 51.30
1947 30.21 39.43 47.47 51.78 62.47 62.02 69.76 67.74 63.48 53.73 39.85 37.31 52.10
1948 33.76 34.57 39.82 47.13 54.37 66.52 66.89 66.27 60.42 49.58 40.97 29.15 49.12
1949 16.50 33.32 42.74 53.15 61.06 61.67 68.65 68.08 62.60 46.58 a 45.03 35.31 49.56
1950 16.20 a 34.86 41.21 46.98 54.77 62.32 70.34 70.79 62.98 52.06 41.30 38.47 49.36
1951 32.69 36.00 38.95 48.73 56.87 60.75 70.34 68.10 61.18 48.84 39.70 30.23 49.37
1952 29.18 38.28 41.79 52.85 57.65 61.92 69.84 68.77 63.80 54.85 33.60 36.02 50.71
1953 45.31 39.59 44.34 47.48 54.00 58.20 68.71 68.52 63.15 52.15 44.15 38.71 52.02
1954 32.77 38.18 39.24 47.48 56.66 58.98 67.66 64.40 59.22 48.11 45.50 34.29 49.38
1955 32.34 34.55 36.89 44.70 52.53 63.67 67.23 67.05 60.02 51.81 33.50 31.97 48.02
1956 34.16 27.53 42.55 52.12 58.82 61.02 70.90 67.68 60.88 49.52 36.12 36.52 49.82
1957 18.94 35.34 42.84 50.45 59.23 63.90 67.60 64.90 62.35 48.02 40.08 39.94 49.46
1958 37.39 47.02 42.44 48.55 62.82 67.37 75.21 74.98 61.37 52.89 41.78 37.40 54.10
1959 35.26 35.61 43.61 50.42 53.05 63.47 71.69 66.60 a 59.45 51.00 37.28 33.90 50.11
1960 24.53 37.47 43.02 49.63 53.66 63.17 75.03 66.52 61.52 52.85 41.68 30.63 49.98
1961 35.71 44.07 45.03 48.58 56.21 69.57 73.81 75.11 57.93 50.03 36.17 35.02 52.27
1962 32.02 37.68 40.58 51.43 51.68 61.27 68.27 66.31 62.17 50.97 43.22 37.87 50.29
1963 26.45 41.48 44.74 47.22 57.03 62.97 67.08 70.35 66.62 55.26 43.55 32.10 51.24
1964 39.15 38.50 40.84 46.65 54.27 62.38 70.48 65.45 59.05 50.85 39.07 31.97 49.89
1965 34.65 40.34 40.16 51.80 55.13 63.08 71.42 70.61 57.95 55.71 44.53 35.48 51.74
1966 36.35 38.39 44.13 49.83 58.82 60.90 68.60 69.73 65.07 51.65 44.33 39.98 52.32
1967 41.17 a 40.82 42.05 44.70 55.34 66.30 73.27 75.11 68.10 53.44 40.92 34.98 53.02
1968 36.37 41.53 47.56 46.28 56.95 64.08 73.85 67.00 62.83 49.50 41.50 32.73 51.68
1969 22.19 34.86 43.40 49.73 59.61 67.83 69.53 68.02 63.63 47.98 42.67 35.68 50.43
1970 36.36 i 40.16 41.77 44.42 56.67 a 68.00 73.71 71.66 57.10 49.39 41.32 35.94 52.74
1971 38.21 39.23 38.98 46.82 57.56 57.63 70.90 75.05 57.15 47.69 40.87 35.23 50.44
1972 ----- z 34.98 45.61 46.22 58.55 64.47 69.92 73.18 59.58 50.39 42.15 28.10 52.10
1973 30.92 38.05 44.45 48.77 59.10 ----- z 72.20 d 68.97 61.77 51.47 39.82 40.16 50.52
1974 27.58 41.30 43.44 48.97 53.34 66.50 70.45 71.31 64.60 ----- z 43.25 38.08 51.71
1975 33.92 a 34.88 40.03 44.58 55.27 61.03 74.15 66.47 63.37 51.81 40.48 37.35 50.28
1976 37.26 37.09 40.40 48.43 57.16 60.62 70.34 67.10 65.53 51.79 41.48 34.55 50.98
1977 26.18 39.52 41.89 52.60 52.89 68.35 69.48 73.95 58.78 50.18 39.40 35.39 50.72
1978 33.39 39.39 45.37 48.65 54.10 65.37 70.55 68.50 59.67 51.71 34.40 29.23 50.03
1979 16.34 36.07 45.44 49.02 57.97 65.92 72.19 71.40 65.39 b 55.14 b 36.77 39.00 50.89
1980 27.32 37.38 41.58 53.52 a 56.45 59.48 a 71.44 67.29 c 62.32 51.05 41.87 38.68 50.70
1981 36.58 39.14 45.27 49.12 55.98 59.15 69.23 c 73.97 63.17 50.08 43.97 36.74 51.87
1982 32.98 36.95 43.29 46.20 56.31 66.92 70.37 70.65 61.08 49.68 36.68 35.13 50.52
1983 40.21 42.91 46.18 48.95 58.48 62.48 67.53 73.18 58.15 51.15 44.88 23.98 51.51
1984 34.00 37.83 45.32 47.77 53.42 60.27 71.26 71.84 59.27 47.56 41.23 28.19 49.83
1985 24.95 a 31.41 41.65 51.67 58.26 63.70 75.95 66.82 55.53 48.73 27.50 19.47 47.14
1986 34.61 37.91 47.65 48.47 57.06 68.78 66.48 74.71 57.28 53.18 41.55 31.87 51.63
1987 29.81 39.43 46.18 54.78 60.11 66.82 69.21 68.61 65.48 53.18 43.08 33.15 52.49
1988 32.18 38.79 43.39 51.50 56.79 63.42 70.69 69.92 61.65 57.32 44.02 33.24 51.91
1989 36.13 24.48 42.29 52.82 55.92 66.52 70.19 68.34 63.05 51.05 44.35 33.66 50.73
1990 38.92 35.71 44.60 53.75 55.16 63.32 73.44 71.11 66.95 50.19 44.82 25.61 51.96
1991 30.98 44.20 41.24 49.03 53.74 59.77 70.18 73.00 64.50 51.26 40.67 36.73 51.27
1992 38.45 43.10 47.60 53.10 61.39 69.12 69.60 70.79 59.25 52.29 39.35 33.37 53.12
1993 25.19 29.82 42.40 50.13 61.53 62.93 64.56 67.42 62.67 54.00 34.07 36.26 49.25
1994 40.97 34.71 46.52 53.17 59.32 63.58 73.13 70.58 65.02 50.23 39.67 36.76 52.80
1995 34.87 42.00 44.37 48.68 57.82 61.93 70.97 66.44 64.88 49.02 44.95 34.32 51.69
1996 34.21 32.28 42.40 51.83 53.24 63.12 73.32 70.82 59.57 51.15 39.78 35.79 50.63
1997 33.50 38.48 45.13 48.17 60.35 63.33 69.58 72.69 64.45 51.10 42.82 34.65 52.02
1998 37.66 43.14 45.18 49.97 56.00 65.12 76.53 72.44 67.50 51.08 44.20 35.68 53.71
1999 40.39 40.61 44.26 48.38 54.58 63.43 69.32 72.87 61.37 51.40 46.65 38.39 52.64
2000 35.32 39.81 44.19 54.00 a 58.58 63.92 70.61 67.24 60.60 50.69 34.62 31.23 50.90
2001 32.65 35.68 45.90 48.17 59.34 62.38 70.45 73.05 65.75 51.08 43.47 35.61 51.96
2002 36.52 38.98 40.10 50.12 56.24 66.10 73.90 68.69 62.12 47.98 40.70 38.31 51.65
2003 39.97 38.62 47.21 49.83 56.98 66.75 74.73 71.85 64.70 55.61 37.43 34.97 53.22
2004 28.16 39.28 48.37 52.40 57.48 65.60 73.03 73.03 60.88 52.74 41.88 36.69 52.46
2005 35.52 38.32 47.21 51.03 59.76 62.35 ----- z ----- z ----- z ----- z ----- z ----- z 49.03
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 30.73 37.30 47.15 41.77 h 48.76 l ----- z ----- z ----- z ----- z ----- z 27.12 ----- z 35.57
2008 ----- z 31.29 ----- z 34.12 e 45.60 a ----- z ----- z ----- z ----- z ----- z 43.50 28.52 36.61
2009 31.55 35.12 38.27 48.22 57.10 63.75 72.72 a 70.90 63.23 46.24 41.63 26.95 49.64
2010 38.56 40.80 44.05 48.52 52.44 61.07 69.94 69.08 60.85 52.34 36.83 34.53 50.75
2011 34.03 33.55 42.85 44.28 a 52.44 58.86 e 67.29 70.47 65.33 i 51.24 39.68 31.16 47.81
2012 33.63 36.14 41.45 50.70 55.13 60.28 71.19 71.39 62.08 49.66 49.02 37.03 a 51.48
2013 28.62 c 38.29 42.95 c ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 36.62
Period of Record Statistics
MEAN 32.49 36.92 43.47 49.77 56.70 63.43 70.82 69.79 61.61 51.52 40.72 34.29 51.05
S.D. 6.22 4.57 2.74 3.12 2.89 2.81 2.41 2.73 2.85 2.54 3.80 4.27 1.32
SKEW -1.04 -0.87 -0.07 -0.93 -0.22 0.44 0.15 -0.07 0.01 0.06 -0.83 -0.78 0.05
MAX 45.31 47.02 49.74 57.67 62.98 71.83 76.89 75.16 68.10 57.32 49.02 43.74 54.41
MIN 12.68 20.16 36.89 34.12 45.60 57.63 64.56 61.71 54.75 46.24 27.12 19.47 47.14
NO YRS 112 115 114 113 114 113 111 112 110 110 113 112 95