DAYTON, TENNESSEE

Monthly Average Temperature (Degrees Fahrenheit)

(402360)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201205
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
1956 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 68.48 h 63.64 c 48.64 a 51.67 a 54.65
1957 41.63 49.95 49.69 62.57 68.73 74.97 78.50 77.37 72.62 56.97 51.38 44.02 60.70
1958 36.68 33.61 47.03 60.77 67.58 75.48 78.77 77.16 71.55 59.60 52.12 37.11 l 60.03
1959 37.77 c 44.48 48.05 59.92 70.35 73.45 s 78.17 a 77.82 71.73 62.29 47.28 43.26 58.28
1960 41.35 38.61 a 37.42 59.93 64.18 a 74.20 76.43 k 77.97 71.77 61.13 48.62 36.23 55.58
1961 35.48 e 47.56 a 53.28 a 56.56 f 63.30 c 72.78 75.19 j 74.07 h ----- z 59.21 54.69 f 41.52 53.30
1962 36.04 f 47.89 46.60 a 54.78 71.77 72.92 75.08 76.06 69.20 60.84 46.91 a 35.84 59.81
1963 31.89 35.38 53.53 60.47 65.90 72.72 74.15 75.00 69.43 62.94 49.32 31.45 56.85
1964 37.48 37.00 48.58 60.75 67.73 74.83 75.08 74.58 70.07 55.94 51.90 42.69 58.05
1965 40.34 40.38 45.61 61.90 69.45 72.30 75.75 a 76.00 71.32 58.89 50.63 42.37 58.74
1966 33.79 40.57 49.16 58.17 64.81 72.65 78.65 75.16 68.57 56.69 49.35 39.95 57.29
1967 40.97 37.96 53.79 62.30 64.87 73.45 72.92 72.97 66.52 58.15 44.50 a 43.97 57.70
1968 37.03 34.36 49.55 58.82 65.45 74.02 77.32 79.27 69.80 59.52 47.75 37.26 57.51
1969 36.16 40.23 42.50 60.57 66.79 75.38 79.24 74.81 69.22 58.77 45.35 36.80 a 57.15
1970 31.19 40.09 a 48.80 a 60.25 67.63 72.77 76.60 76.66 74.77 61.95 46.60 43.45 58.40
1971 37.39 40.09 a 45.19 b 58.12 64.05 75.78 75.47 75.44 73.62 64.74 48.33 48.35 58.88
1972 42.73 39.64 48.50 59.65 65.40 71.23 75.74 75.94 72.80 58.29 46.67 44.06 58.39
1973 37.92 39.11 55.42 55.97 63.53 74.62 77.26 75.32 73.32 62.55 52.07 40.63 58.98
1974 47.92 42.46 55.18 59.02 67.87 69.92 76.73 75.18 67.98 57.02 48.67 40.79 59.06
1975 42.66 45.23 47.81 57.50 69.53 73.48 76.37 77.37 68.13 60.98 49.68 40.87 59.14
1976 34.08 48.41 52.53 59.13 63.50 72.42 75.23 74.31 67.68 54.85 42.18 37.10 56.79
1977 26.02 40.25 53.53 62.42 68.82 74.92 79.69 77.47 72.55 56.82 50.58 38.26 58.44
1978 29.06 34.21 48.02 60.02 65.40 74.42 78.39 76.69 74.07 57.95 53.80 40.61 57.72
1979 31.82 a 37.09 51.92 59.23 65.85 72.12 75.05 75.81 70.38 58.53 49.85 41.23 57.41
1980 40.71 36.17 47.06 58.15 67.35 74.43 82.21 81.68 75.18 57.26 47.58 40.27 59.01
1981 34.55 41.75 47.24 63.65 64.32 76.93 79.26 76.05 68.77 57.69 49.67 36.73 58.05
1982 34.39 43.32 53.19 55.62 69.82 73.43 77.87 75.13 68.62 59.81 49.88 46.89 59.00
1983 38.02 41.73 50.26 53.75 65.23 72.53 78.53 79.66 70.17 61.03 47.65 35.60 57.85
1984 34.98 43.69 48.13 57.38 64.21 75.28 74.63 75.40 68.28 66.26 45.97 48.02 58.52
1985 31.37 39.91 53.16 60.48 67.66 73.55 76.52 75.23 68.65 64.08 57.25 35.42 58.61
1986 37.69 45.83 a 51.18 61.02 68.39 77.05 81.26 76.37 72.18 60.44 52.75 39.69 60.32
1987 38.58 43.36 51.29 57.85 71.08 74.88 78.45 78.82 70.20 54.81 51.12 43.81 59.52
1988 33.90 40.00 50.56 59.70 65.40 74.98 76.95 77.48 69.70 52.56 49.60 40.24 57.59
1989 43.18 41.75 53.35 57.58 62.95 72.22 75.53 74.61 69.07 58.44 48.90 32.53 57.51
1990 44.81 48.32 53.08 57.83 65.19 73.65 76.08 75.77 71.03 58.98 51.42 44.68 60.07
1991 41.05 43.23 52.32 61.72 a 70.13 73.20 77.45 75.94 71.32 59.81 46.78 43.74 59.72
1992 40.47 45.90 48.74 58.53 63.58 70.57 75.85 71.74 69.62 56.73 47.80 39.40 57.41
1993 43.31 39.75 45.60 56.08 65.87 73.47 80.40 78.13 70.17 57.45 46.98 39.92 58.09
1994 33.15 43.09 50.02 61.22 62.87 74.25 74.69 73.81 67.77 59.11 52.35 44.42 58.06
1995 39.23 40.70 52.48 59.90 66.48 72.03 77.58 78.73 68.03 58.08 43.32 37.98 57.88
1996 36.56 39.45 44.76 56.03 67.92 72.41 a 75.79 74.24 67.30 58.56 45.13 41.78 a 56.66
1997 39.55 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 39.55
1998 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.89 44.89
1999 42.10 44.12 45.89 61.43 66.65 75.02 78.17 e 78.34 b 70.72 58.74 53.88 a 41.65 59.73
2000 38.71 44.76 b 53.68 55.50 69.34 74.98 a 78.19 77.58 70.42 60.91 b 47.32 32.79 b 58.68
2001 34.98 45.18 46.69 60.87 67.37 72.22 77.05 76.37 68.33 56.77 53.87 45.48 a 58.77
2002 40.56 41.52 49.05 61.98 64.37 74.93 79.23 79.13 74.30 63.19 45.62 39.18 59.42
2003 33.06 39.61 52.66 59.62 66.69 71.03 75.45 77.15 69.58 58.48 52.87 38.15 57.86
2004 36.68 a 39.67 53.23 57.75 69.98 74.60 76.03 73.19 70.18 62.77 52.48 38.55 58.76
2005 42.77 43.62 46.92 57.59 a 63.31 73.97 77.68 77.69 72.45 60.27 49.12 36.94 58.53
2006 44.18 38.30 49.48 63.40 64.42 74.12 78.31 79.66 67.70 55.47 48.10 42.61 58.81
2007 40.27 36.57 55.60 54.78 68.42 74.83 75.58 81.85 73.10 62.91 d 48.20 44.58 59.73
2008 35.90 41.66 48.03 58.80 65.48 76.55 77.45 76.77 72.50 58.82 45.40 41.44 58.23
2009 36.29 41.79 50.45 57.28 67.45 77.15 75.11 76.71 71.55 55.50 50.82 37.97 58.17
2010 33.52 34.52 47.23 61.02 69.27 78.22 80.18 80.48 73.07 60.23 49.87 32.23 58.32
2011 34.82 44.21 51.08 60.65 67.28 b 76.83 80.38 a 79.92 68.79 a 56.79 50.03 43.53 59.53
2012 41.90 44.93 58.87 a 60.78 71.27 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.62
Period of Record Statistics
MEAN 37.64 41.35 49.87 59.25 66.62 73.97 77.22 76.69 70.50 59.26 49.13 40.62 58.45
S.D. 4.33 3.86 3.71 2.31 2.33 1.75 1.96 2.13 2.14 2.77 2.93 4.20 0.93
SKEW -0.16 0.04 -0.46 -0.35 0.23 0.04 0.33 0.30 0.33 0.24 0.13 -0.01 0.16
MAX 47.92 49.95 58.87 63.65 71.77 78.22 82.21 81.85 75.18 66.26 57.25 51.67 60.70
MIN 26.02 33.61 37.42 53.75 62.87 69.92 72.92 71.74 66.52 52.56 42.18 31.45 56.66
NO YRS 54 54 54 53 53 52 51 52 52 54 53 54 48