PORTLAND 2, TENNESSEE

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(407359)

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
1955 ----- z ----- z ----- z ----- z ----- z 61.13 o 70.13 67.45 62.53 48.47 a 35.57 29.42 52.26
1956 27.06 37.17 38.00 45.70 58.65 63.43 67.52 65.26 57.03 51.94 36.67 40.55 49.08
1957 28.65 37.79 38.26 51.17 57.58 66.87 66.90 63.39 61.23 45.77 39.73 36.42 49.48
1958 27.48 20.00 34.68 47.70 56.03 62.37 68.90 65.10 60.03 47.10 40.37 24.48 46.19
1959 26.06 31.21 36.61 48.27 60.39 63.21 a 66.65 68.26 61.38 a 50.97 34.83 34.86 b 48.56
1960 32.81 27.69 24.70 d 49.57 52.90 63.37 65.41 b 67.19 60.25 b 49.35 37.53 24.81 46.30
1961 21.84 34.36 42.26 42.13 51.29 61.17 64.89 d 62.86 c 56.19 c 42.25 g 37.07 p 27.44 d 46.44
1962 22.26 29.50 31.77 40.63 58.26 60.39 g ----- z 62.42 54.47 49.26 34.60 21.48 40.47
1963 16.48 18.29 39.10 46.90 51.87 60.83 62.52 60.32 52.63 45.29 34.27 16.32 42.07
1964 21.97 22.86 33.06 47.80 53.83 a 61.00 62.45 61.45 54.47 39.26 37.00 29.87 43.75
1965 26.97 26.89 31.77 48.50 57.45 61.67 63.48 61.97 59.43 41.26 36.52 a 32.42 45.69
1966 20.35 ----- z 35.83 a 46.50 51.94 57.23 66.35 62.29 54.80 39.48 37.30 27.26 45.39
1967 29.45 23.71 41.77 49.63 53.00 61.73 62.52 59.52 52.63 46.13 32.90 32.61 45.47
1968 23.61 20.72 35.29 46.63 53.61 61.60 63.84 65.29 55.73 46.16 38.80 27.03 44.86
1969 25.13 29.25 29.32 47.20 54.03 62.10 67.48 61.55 55.80 46.58 31.83 23.68 44.50
1970 17.48 25.96 33.52 47.03 53.52 60.33 61.52 64.06 62.27 46.61 35.10 31.26 44.89
1971 25.06 28.43 31.26 41.77 49.13 63.87 63.84 62.03 60.80 52.32 36.10 38.04 c 46.05
1972 27.32 26.62 35.81 47.53 53.87 58.53 65.32 63.03 60.93 42.90 35.17 29.74 45.57
1973 23.39 25.75 43.03 45.50 50.26 64.77 66.68 63.94 61.53 49.65 40.90 29.16 47.05
1974 34.32 29.14 40.81 43.40 56.10 58.87 64.16 64.58 54.97 41.45 37.57 29.32 46.22
1975 28.61 30.75 32.81 42.17 56.94 62.50 64.26 67.55 54.53 48.03 39.03 30.79 b 46.50
1976 21.77 a 32.03 40.55 42.41 a 48.68 61.87 63.90 60.84 54.87 40.84 27.93 23.71 43.28
1977 9.94 24.46 39.58 49.30 57.32 62.73 67.68 66.84 61.69 a 41.83 a 40.53 26.94 45.74
1978 15.61 14.50 33.94 47.87 54.29 63.27 67.29 65.00 60.80 41.55 40.10 28.10 44.36
1979 17.23 19.43 37.35 43.19 d 53.87 h 61.40 67.29 64.39 57.33 46.73 a 36.67 30.55 43.78
1980 29.52 23.69 33.45 42.44 e 53.81 61.80 69.45 68.45 60.07 41.65 33.87 27.87 45.50
1981 19.03 26.56 a 33.58 50.67 49.52 65.17 66.06 63.03 52.70 43.69 b 37.07 a 24.94 44.33
1982 18.65 28.96 39.00 41.70 58.48 58.37 67.35 63.32 55.27 46.65 38.72 a 29.85 d 45.53
1983 28.52 33.00 34.30 d 44.14 b ----- z 64.67 69.81 ----- z 58.03 50.84 38.23 21.65 44.32
1984 19.84 33.34 34.61 46.17 50.52 64.33 64.55 65.03 55.30 52.90 ----- z 38.00 47.69
1985 18.03 24.36 38.50 a 48.97 57.58 64.77 67.06 66.58 58.03 48.26 45.73 21.74 46.63
1986 23.74 33.11 35.87 47.90 56.35 66.63 71.42 64.71 64.07 49.35 38.31 a 29.77 48.44
1987 26.16 32.29 38.71 44.27 63.27 a 66.60 69.55 68.71 59.13 40.03 41.77 31.63 d 48.51
1988 25.00 24.80 i 37.68 45.07 53.90 b 63.30 69.13 69.77 a 60.53 40.33 a 36.81 d 25.83 a 47.94
1989 33.59 b 26.89 38.16 45.66 a 54.94 64.33 68.61 66.81 59.43 47.81 38.53 17.16 46.83
1990 34.35 36.36 41.29 44.30 54.19 64.90 67.65 66.19 61.07 47.61 43.10 32.35 49.45
1991 28.48 30.75 40.68 52.43 63.13 66.80 69.77 66.45 61.40 49.23 36.47 32.68 49.86
1992 28.55 34.28 38.32 47.40 54.23 61.83 69.87 63.87 60.37 45.77 40.00 30.87 47.95
1993 30.81 26.68 35.74 44.53 56.71 64.77 71.94 67.84 58.37 47.29 37.43 31.35 47.79
1994 22.39 30.11 37.68 50.10 51.84 67.17 68.68 65.55 56.83 49.58 43.80 35.55 48.27
1995 28.55 26.00 41.16 47.57 57.13 63.93 69.26 71.55 58.63 48.42 32.83 28.29 47.78
1996 25.87 28.21 31.55 44.50 60.35 65.03 67.45 66.97 58.57 49.23 35.70 33.10 47.21
1997 25.74 36.04 40.52 42.20 51.94 64.30 67.45 66.06 59.50 48.77 37.30 31.71 47.63
1998 35.58 36.93 39.16 47.67 61.32 67.17 71.13 68.35 64.53 52.13 40.83 34.42 51.60
1999 31.03 33.57 ----- z 50.50 57.13 67.07 72.39 66.65 58.00 45.52 42.63 31.71 50.56
2000 28.10 33.34 39.77 43.93 58.06 65.41 a 67.00 67.39 59.27 50.97 37.86 a 18.84 47.50
2001 24.06 33.39 32.77 52.62 d 58.13 62.53 68.26 69.06 58.00 45.00 b 39.77 35.03 48.22
2002 29.39 30.14 35.39 48.70 53.81 66.57 70.45 68.65 63.07 51.55 36.10 29.52 48.61
2003 19.74 27.57 38.61 47.53 58.10 61.03 68.52 68.23 58.50 47.81 42.07 29.90 47.30
2004 24.61 26.62 40.61 46.40 61.58 65.17 67.23 63.55 60.27 53.16 43.23 33.00 o 50.22
2005 33.77 34.11 33.90 48.13 51.97 65.20 70.65 69.81 62.97 48.61 38.73 26.42 48.69
2006 34.55 27.14 37.39 51.80 53.94 ----- z 69.16 70.32 57.73 45.97 36.47 32.19 46.97
2007 31.42 23.43 43.27 a 44.63 58.35 64.93 67.26 72.68 63.97 55.10 36.73 34.55 49.69
2008 25.00 29.31 37.13 45.47 53.39 66.24 e 67.71 65.90 61.77 47.42 35.80 27.48 46.88
2009 23.29 30.00 39.32 46.60 57.74 67.77 65.84 66.94 62.60 46.26 40.57 29.06 48.00
2010 21.77 24.39 37.61 49.43 60.45 70.37 71.48 70.52 60.00 47.13 38.90 22.97 47.92
2011 23.94 30.81 b 39.84 48.33 56.45 66.24 a 71.80 a 67.94 59.63 47.47 a 43.63 c 33.39 49.12
2012 30.26 33.38 48.77 48.73 61.29 x ----- z ----- z ----- z ----- z ----- z ----- z ----- z 40.29
Period of Record Statistics
MEAN 25.51 28.75 37.06 46.65 55.54 63.69 67.41 65.78 58.88 46.97 37.93 29.22 46.97
S.D. 5.43 5.06 4.01 2.91 3.51 2.65 2.67 2.94 3.05 3.76 3.29 5.07 1.95
SKEW -0.31 -0.44 -0.20 -0.07 0.16 -0.16 -0.21 0.03 -0.30 -0.30 -0.13 -0.39 -0.21
MAX 35.58 37.79 48.77 52.62 63.27 70.37 72.39 72.68 64.53 55.10 45.73 40.55 51.60
MIN 9.94 14.50 24.70 40.63 48.68 57.23 61.52 59.52 52.63 39.26 27.93 16.32 42.07
NO YRS 57 55 56 57 54 54 56 56 57 56 55 56 46