DAYTON, TENNESSEE

Monthly Average Minimum 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 55.91 h 52.14 c 37.79 a 41.57 a 43.83
1957 33.23 41.18 39.81 50.70 57.19 64.30 67.00 64.06 62.77 47.90 41.33 34.39 50.32
1958 28.19 23.07 38.90 48.60 56.29 63.37 68.58 65.26 58.97 46.16 40.10 26.47 l 48.86
1959 26.11 c 33.68 35.00 46.47 58.77 60.10 66.57 a 66.58 60.97 52.26 35.30 33.48 47.94
1960 32.90 28.43 a 27.55 45.73 50.53 a 62.10 65.44 d 65.94 60.57 50.32 35.97 25.71 45.93
1961 23.83 b 37.67 a 42.30 a 43.48 e 51.93 c 62.13 64.18 i 63.61 h ----- z 44.19 44.58 f 31.97 42.19
1962 25.69 e 35.07 36.35 42.03 56.10 60.20 61.61 62.03 57.07 47.52 36.38 a 24.77 45.40
1963 20.58 22.29 39.32 47.10 52.00 61.13 62.29 62.55 56.17 45.58 37.37 21.61 44.00
1964 24.77 26.83 35.13 48.07 53.94 61.47 63.52 63.16 56.83 42.48 39.20 32.71 45.68
1965 28.32 28.57 34.45 48.60 54.90 60.67 63.63 a 62.97 59.20 44.45 38.63 30.55 46.25
1966 24.74 30.18 34.48 45.53 51.52 57.27 65.13 63.10 56.97 42.06 38.43 30.23 44.97
1967 29.90 26.39 38.77 47.67 51.58 60.73 61.65 61.77 52.87 43.06 31.55 a 34.81 45.06
1968 26.52 22.52 34.48 45.47 52.03 59.47 64.16 64.84 55.87 46.06 36.73 27.26 44.62
1969 27.61 30.82 28.94 45.87 52.16 61.43 66.23 62.03 57.30 46.61 32.07 27.77 a 44.90
1970 21.03 28.07 a 35.70 a 46.27 52.61 60.33 63.10 65.39 61.90 49.84 34.63 32.84 45.98
1971 28.00 27.59 a 33.17 b 41.00 49.90 62.30 64.29 63.23 62.03 52.61 36.83 39.55 46.71
1972 31.68 28.76 35.48 44.73 52.16 57.43 63.74 63.19 61.03 46.87 38.23 35.74 46.59
1973 27.97 27.54 44.58 44.23 49.90 62.73 66.06 63.06 61.70 49.87 39.63 29.71 47.25
1974 39.68 30.50 42.26 43.90 55.19 57.23 63.48 63.61 57.97 40.97 36.57 31.58 46.91
1975 31.81 34.79 36.71 43.30 57.35 61.03 64.39 65.97 57.33 49.65 37.93 30.29 47.55
1976 23.65 34.34 39.97 42.23 50.23 60.53 63.00 61.23 54.73 42.97 29.80 24.90 43.97
1977 16.13 25.25 40.19 47.97 55.06 61.03 66.94 65.84 62.17 44.81 41.53 28.19 46.26
1978 20.97 23.96 35.97 45.30 53.23 61.63 65.58 66.26 62.13 42.58 43.10 28.77 45.79
1979 22.57 a 27.71 38.58 46.67 53.65 59.47 65.87 64.26 60.00 45.03 38.47 30.39 46.05
1980 33.00 24.55 36.00 44.17 54.90 61.47 68.26 66.97 62.47 44.39 36.80 28.77 46.81
1981 23.42 29.07 33.45 49.90 51.03 64.97 67.84 64.45 55.60 45.48 38.17 28.65 46.00
1982 24.16 32.75 40.68 43.57 54.97 60.30 66.74 64.45 57.63 47.35 39.80 38.45 47.57
1983 29.16 31.86 38.58 41.17 52.39 60.10 66.29 66.94 57.63 48.61 36.10 26.65 46.29
1984 24.68 31.07 35.84 45.50 50.65 61.03 63.03 65.00 55.13 55.48 34.33 37.74 46.62
1985 21.84 29.64 40.03 46.03 55.84 61.03 65.90 65.71 55.87 54.42 49.03 24.71 47.51
1986 25.32 35.07 a 36.90 45.03 55.84 64.13 68.16 64.74 62.60 49.55 45.03 31.77 48.68
1987 30.06 33.93 39.10 44.60 59.06 63.50 66.58 66.26 57.90 39.71 39.53 34.81 47.92
1988 24.48 27.45 37.97 45.87 51.39 59.97 65.90 66.71 60.20 41.58 39.23 30.00 45.90
1989 32.97 32.07 42.45 44.37 51.55 63.50 67.19 64.81 61.23 46.06 37.93 23.39 47.29
1990 35.42 37.57 42.52 44.47 54.42 62.07 64.94 64.87 59.83 47.19 39.30 35.39 49.00
1991 34.06 32.96 40.45 50.77 60.74 64.57 68.03 65.45 59.77 47.19 37.03 34.71 49.65
1992 31.26 35.21 37.13 45.90 52.19 61.00 67.13 63.16 61.57 45.84 38.67 33.42 47.71
1993 35.58 30.25 36.06 43.47 54.26 62.33 68.39 66.45 58.57 46.26 36.60 31.58 47.48
1994 25.13 32.00 37.81 47.47 50.61 64.27 67.03 65.16 58.20 49.23 41.10 35.90 47.83
1995 31.42 31.14 39.87 45.80 55.68 61.37 66.42 69.45 58.90 47.48 33.57 29.94 47.59
1996 27.68 29.38 33.32 42.20 55.77 61.90 a 66.39 64.39 57.93 47.55 36.70 31.93 a 46.26
1997 30.68 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 30.68
1998 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 36.13 36.13
1999 32.48 33.64 34.61 50.30 54.52 64.80 69.42 e 65.76 b 56.43 46.03 41.24 a 31.32 48.38
2000 29.74 33.41 b 41.48 44.33 57.90 64.03 a 66.90 66.19 59.97 47.59 b 38.30 24.90 b 47.90
2001 26.16 35.39 36.48 49.93 56.03 61.33 67.77 67.13 58.30 44.26 40.30 36.00 a 48.26
2002 30.84 30.86 38.16 51.07 53.39 63.57 68.65 67.42 64.43 55.87 36.70 30.52 49.29
2003 23.84 31.50 42.71 48.90 57.61 61.30 66.13 68.03 58.77 46.84 42.90 28.68 48.10
2004 26.60 a 31.66 42.10 46.23 59.26 65.47 65.97 63.19 60.40 53.06 44.20 28.52 48.89
2005 33.61 34.68 36.42 45.86 a 51.55 64.30 68.94 68.55 60.50 49.03 36.50 27.84 48.15
2006 34.58 28.57 38.13 51.17 54.13 62.57 67.29 69.03 57.53 43.94 37.67 31.19 47.98
2007 31.29 26.18 42.81 43.50 55.65 62.73 66.16 69.87 61.27 51.22 d 36.77 35.06 48.54
2008 26.77 31.28 37.00 48.20 54.45 64.43 65.58 65.03 61.90 46.55 34.13 31.65 47.25
2009 27.19 29.79 40.23 46.10 58.42 65.97 64.74 66.81 62.63 45.03 40.17 29.52 48.05
2010 25.58 27.36 37.97 47.67 58.97 68.40 69.45 70.39 59.33 45.68 38.10 23.94 47.74
2011 26.26 33.36 41.16 48.60 55.69 b 65.80 70.27 a 67.19 58.83 a 45.13 39.30 34.06 48.80
2012 32.32 34.90 45.71 48.80 59.36 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 40.43
Period of Record Statistics
MEAN 28.06 30.62 37.99 46.15 54.28 62.08 66.03 65.31 59.19 47.03 38.17 31.04 47.09
S.D. 4.57 4.01 3.56 2.58 2.77 2.23 2.05 2.12 2.49 3.59 3.31 4.30 1.43
SKEW 0.02 0.01 -0.40 0.15 0.31 0.18 -0.22 0.33 -0.21 0.50 0.41 0.08 -0.20
MAX 39.68 41.18 45.71 51.17 60.74 68.40 70.27 70.39 64.43 55.87 49.03 41.57 50.32
MIN 16.13 22.29 27.55 41.00 49.90 57.23 61.61 61.23 52.87 39.71 29.80 21.61 43.97
NO YRS 55 54 54 54 53 53 52 52 52 54 53 54 51