ROANOKE WSO AIRPORT, VIRGINIA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(447285)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 62.00 56.23 41.87 39.83 31.35 46.26
1949 35.97 34.14 35.48 42.86 a 52.81 62.80 68.10 63.87 54.37 51.58 36.50 31.03 47.46
1950 37.45 31.21 31.19 41.40 55.23 a 59.97 63.81 62.68 56.67 50.32 31.93 26.26 45.68
1951 28.29 28.86 36.16 43.30 51.87 61.27 63.84 63.84 55.80 48.90 31.00 28.45 45.13
1952 32.71 32.38 34.19 45.03 53.81 64.83 65.29 62.32 53.83 41.23 37.90 30.87 46.20
1953 32.87 32.82 38.00 44.40 58.77 62.33 65.48 64.16 55.27 47.45 35.70 29.74 47.25
1954 27.16 33.21 35.55 47.93 49.35 60.30 64.42 65.19 57.77 47.10 34.10 29.06 45.93
1955 26.71 27.57 38.03 48.73 55.55 56.37 69.00 67.48 59.77 46.10 33.57 24.35 46.10
1956 27.26 32.97 34.23 42.33 53.74 60.10 65.16 63.06 56.23 50.03 36.10 38.26 46.62
1957 27.65 34.21 35.58 47.77 55.65 63.63 64.16 62.45 59.73 43.87 38.93 32.13 47.15
1958 25.39 23.68 33.68 45.07 53.81 60.17 67.55 64.23 55.40 46.23 40.37 25.10 45.05
1959 26.26 30.14 33.35 46.43 57.58 61.10 66.39 67.48 58.57 50.39 34.20 32.74 47.05
1960 30.55 28.48 25.19 47.37 51.84 61.27 64.35 66.58 60.07 48.00 35.37 22.45 45.13
1961 24.00 31.82 40.29 42.43 49.68 59.70 65.39 65.32 60.70 44.97 41.60 29.97 46.32
1962 27.00 30.46 34.10 42.87 58.00 61.40 63.45 62.81 54.43 48.55 35.93 24.42 45.29
1963 22.26 21.04 38.48 45.70 52.71 61.63 63.19 62.58 53.57 45.68 39.33 22.90 44.09
1964 27.58 27.38 35.29 46.10 55.26 62.50 65.23 63.19 54.90 41.19 38.83 30.32 45.65
1965 26.06 25.93 31.58 43.70 58.10 59.13 64.23 62.61 57.87 44.06 37.33 30.29 45.07
1966 22.84 27.71 34.81 42.00 51.68 57.40 65.19 63.42 56.27 41.97 35.23 30.13 44.05
1967 30.55 24.61 35.52 46.23 47.94 58.47 63.39 62.52 50.30 42.87 33.07 32.10 43.96
1968 23.94 23.00 38.65 44.87 51.03 59.07 65.03 64.84 54.13 47.10 39.37 24.61 44.64
1969 24.00 29.29 29.35 45.23 52.13 62.23 65.48 62.13 55.60 43.87 33.43 26.23 44.08
1970 20.03 25.68 31.97 44.73 54.32 60.67 64.61 63.19 60.10 48.71 36.07 29.87 45.00
1971 24.32 28.07 32.39 40.07 49.87 61.83 63.52 62.03 60.90 53.35 35.17 35.13 45.55
1972 29.19 25.93 34.42 42.30 50.35 56.80 64.03 62.29 56.70 41.26 36.30 35.71 44.61
1973 27.16 25.29 42.45 44.20 49.74 63.00 64.94 66.19 59.50 47.90 38.23 30.26 46.57
1974 36.35 28.14 39.68 44.37 52.77 57.50 63.81 64.39 55.10 41.45 35.93 29.94 45.79
1975 29.65 30.79 33.10 41.50 56.71 61.00 65.13 66.84 57.40 48.00 39.17 28.68 46.50
1976 23.10 34.03 38.06 41.40 50.16 58.73 62.06 59.16 52.87 40.29 29.37 22.87 42.68
1977 14.94 24.32 41.10 45.87 55.58 59.40 66.39 66.06 60.07 43.61 40.80 26.39 45.38
1978 19.61 21.86 34.48 45.83 52.97 60.83 65.45 67.71 61.37 40.03 38.90 28.45 44.79
1979 22.58 20.36 36.65 44.90 52.68 58.90 64.39 63.68 57.33 43.13 39.20 30.10 44.49
1980 29.97 23.93 33.39 45.07 52.52 58.33 66.58 65.42 60.97 44.48 35.00 28.77 45.37
1981 22.35 26.21 32.35 46.27 49.10 63.20 66.39 61.42 55.33 43.03 34.27 25.26 43.77
1982 19.68 28.21 33.32 39.30 54.61 60.20 65.94 61.90 54.50 46.87 36.70 33.35 44.55
1983 27.71 27.32 38.32 43.27 49.13 58.50 64.10 65.90 55.17 46.77 37.37 26.29 44.99
1984 24.77 32.93 33.74 44.53 51.58 62.27 63.26 64.10 52.97 54.35 34.50 36.87 46.32
1985 22.39 28.11 38.45 48.77 55.81 61.47 67.06 63.90 56.37 50.00 46.03 25.55 46.99
1986 24.23 30.61 34.29 46.20 52.39 61.50 67.19 62.32 59.00 47.68 38.73 29.48 46.14
1987 26.55 27.32 34.77 43.33 55.45 63.27 67.10 66.39 58.87 37.55 38.73 33.19 46.04
1988 20.81 27.34 35.00 43.77 50.71 58.13 64.48 65.74 56.23 39.42 34.57 28.87 43.76
1989 30.55 28.54 36.74 42.43 50.13 64.10 66.35 64.16 58.90 45.35 34.73 20.35 45.20
1990 33.16 33.43 40.35 43.37 54.06 60.87 65.74 64.68 57.57 47.29 38.97 34.16 47.80
1991 29.61 31.25 39.10 46.87 59.06 62.83 67.65 64.06 57.93 45.26 36.33 31.87 47.65
1992 29.84 31.48 36.16 44.73 50.23 58.93 65.97 62.29 58.17 43.29 37.83 29.97 45.74
1993 31.06 26.07 33.90 42.37 53.77 59.80 68.68 64.90 58.07 43.55 36.63 27.52 45.53
1994 22.06 28.71 36.10 47.83 48.81 64.17 67.81 64.13 54.87 44.10 39.30 33.48 45.95
1995 30.45 27.50 37.48 44.27 53.45 62.90 65.81 68.06 56.57 46.32 33.20 26.77 46.07
1996 24.87 29.79 30.87 44.60 54.58 62.33 64.65 63.81 57.50 48.00 32.00 30.48 45.29
1997 27.32 33.82 39.10 41.27 48.94 59.60 65.42 62.26 57.33 45.00 35.00 30.35 45.45
1998 33.42 34.64 36.61 45.40 57.61 63.27 66.58 64.81 61.17 47.48 37.47 33.94 48.53
1999 30.61 31.29 33.71 47.87 51.52 61.40 68.87 64.16 55.57 44.65 42.17 a 32.58 47.03
2000 25.90 32.86 40.00 44.53 55.42 64.07 64.77 63.74 57.03 46.03 34.40 22.68 45.95
2001 27.19 31.25 34.06 47.47 53.81 62.70 63.65 66.74 55.33 43.61 39.83 34.76 b 46.70
2002 31.48 29.64 36.45 46.80 52.35 62.93 68.23 66.26 61.27 50.23 37.77 29.94 47.78
2003 25.29 28.93 38.23 46.53 54.42 60.50 65.94 67.52 57.33 45.19 41.67 29.61 46.76
2004 25.84 28.93 39.45 47.63 60.39 63.77 67.58 63.65 60.20 51.39 42.23 29.61 48.39
2005 31.97 32.43 35.00 45.57 50.81 63.50 69.55 68.71 59.80 51.03 38.07 29.48 47.99
2006 34.26 30.29 37.52 48.37 51.32 61.90 67.26 68.35 56.07 44.90 39.77 34.48 47.87
2007 32.23 25.11 41.48 45.37 56.13 64.20 65.81 70.58 59.50 52.13 37.30 35.45 48.77
2008 28.19 31.83 38.52 46.37 52.90 64.47 65.23 63.58 60.57 47.10 37.43 32.42 47.38
2009 26.65 31.61 39.00 46.60 55.77 64.37 64.03 66.84 59.70 47.55 42.43 29.94 47.87
2010 26.03 27.18 39.65 47.50 57.74 67.60 68.65 67.94 59.07 49.52 36.00 24.68 47.63
2011 26.90 32.32 37.94 48.30 55.58 64.63 69.90 67.13 60.37 46.48 38.77 33.68 48.50
2012 31.61 33.62 46.19 46.86 a 60.78 v ----- z ----- z ----- z ----- z ----- z ----- z ----- z 39.57
Period of Record Statistics
MEAN 27.32 29.06 36.10 44.94 53.36 61.37 65.69 64.56 57.31 46.04 37.09 29.63 46.02
S.D. 4.41 3.49 3.40 2.23 2.91 2.27 1.76 2.17 2.48 3.53 3.05 3.84 1.37
SKEW -0.06 -0.44 -0.09 -0.32 0.26 -0.02 0.46 0.39 -0.26 0.03 0.11 -0.19 0.05
MAX 37.45 34.64 46.19 48.77 60.39 67.60 69.90 70.58 61.37 54.35 46.03 38.26 48.77
MIN 14.94 20.36 25.19 39.30 47.94 56.37 62.06 59.16 50.30 37.55 29.37 20.35 42.68
NO YRS 64 64 64 64 63 63 63 64 64 64 64 64 63