RICHMOND WSO AIRPORT, VIRGINIA

Monthly Average Temperature (Degrees Fahrenheit)

(447201)

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 ----- z ----- z ----- z ----- z ----- z 9999.00
1949 45.26 46.48 48.66 55.70 65.95 75.23 80.08 76.58 67.43 62.50 48.98 42.39 59.60
1950 49.68 40.62 44.39 54.68 64.97 74.18 76.74 75.44 68.15 61.11 47.30 36.08 57.78
1951 40.85 41.23 46.74 56.62 64.56 74.27 78.53 75.92 69.93 61.55 44.98 b 37.17 h 59.56
1952 42.44 42.16 46.27 58.07 65.35 77.60 80.35 76.35 69.17 55.19 49.38 39.24 58.47
1953 42.84 43.38 48.32 57.98 71.48 75.17 79.89 77.29 69.95 60.61 48.48 42.50 59.82
1954 38.02 44.84 46.94 61.20 62.97 74.53 78.60 76.79 74.37 62.24 46.05 38.16 58.72
1955 35.73 40.11 50.18 60.77 67.16 70.05 81.31 78.63 70.57 59.48 46.42 34.81 57.93
1956 35.95 42.98 46.29 55.45 64.78 a 74.70 77.76 76.44 67.90 60.89 47.53 48.89 58.30
1957 35.19 43.29 47.18 61.45 67.79 76.20 78.40 74.60 71.85 54.56 50.30 43.05 58.65
1958 34.55 33.71 42.34 57.47 65.71 71.27 80.24 76.40 69.07 58.68 51.20 33.35 56.17
1959 37.50 41.55 47.24 59.30 69.37 74.77 77.89 79.02 70.82 61.34 47.25 41.61 58.97
1960 38.71 39.24 35.85 61.77 64.84 73.72 76.26 77.50 69.25 57.06 50.05 34.61 56.57
1961 33.42 42.16 50.74 52.95 63.56 72.73 78.53 77.05 73.52 58.13 50.13 37.08 57.50
1962 36.53 39.70 44.94 57.50 70.58 74.00 74.76 74.61 66.15 60.42 47.18 36.03 56.87
1963 35.84 33.29 50.81 59.17 63.95 72.00 76.06 75.66 65.50 58.60 50.07 32.40 56.11
1964 38.02 37.16 47.55 55.38 66.40 73.03 75.74 73.02 67.03 53.34 51.47 42.90 56.75
1965 35.53 38.80 43.00 53.88 69.58 70.68 74.94 75.82 70.68 56.08 48.15 41.32 56.54
1966 31.13 37.66 47.53 52.72 63.02 71.42 76.34 74.56 67.20 55.47 49.47 37.98 55.37
1967 40.92 34.71 46.63 58.75 60.63 72.03 76.63 75.44 65.67 57.19 43.98 41.87 56.20
1968 33.87 34.16 51.97 58.80 64.63 74.72 78.84 78.82 70.88 61.94 51.32 36.94 58.07
1969 33.89 36.82 42.24 57.62 65.48 75.67 78.23 75.05 68.13 58.48 46.77 35.48 56.15
1970 30.02 37.04 42.85 58.20 69.05 75.68 78.23 78.00 74.77 62.94 49.90 40.37 58.09
1971 33.79 39.45 44.48 54.92 63.23 74.62 76.63 75.32 71.40 64.56 48.50 47.98 57.91
1972 40.65 37.59 47.16 56.20 64.53 70.07 77.05 75.18 70.08 55.79 47.85 45.82 57.33
1973 37.55 38.50 52.55 57.90 65.13 75.98 77.31 77.50 72.33 60.52 51.22 40.79 58.94
1974 45.79 40.05 50.37 59.87 65.73 70.55 76.82 75.69 67.38 55.37 48.50 41.73 58.15
1975 40.74 41.36 45.26 52.90 67.68 73.58 75.94 78.73 69.33 62.48 53.55 40.00 58.46
1976 35.11 48.47 52.60 60.45 65.15 74.62 77.29 75.61 68.68 54.40 42.68 36.69 57.65
1977 25.23 40.41 53.68 61.13 68.16 73.02 81.32 79.81 74.18 57.27 52.27 39.48 58.83
1978 33.34 30.30 44.50 57.32 65.53 74.65 77.45 80.10 72.87 58.31 52.53 42.45 57.45
1979 36.44 28.57 51.05 58.38 67.10 70.83 76.85 77.77 70.98 58.24 53.27 42.23 57.64
1980 38.74 36.02 47.35 61.05 68.24 72.80 79.97 80.69 74.67 56.90 46.17 38.60 58.43
1981 31.13 42.14 44.55 60.57 64.10 77.87 79.55 75.05 69.35 56.44 49.03 37.92 57.31
1982 31.63 41.66 49.08 55.85 70.42 73.38 78.53 74.98 69.72 59.24 51.85 46.06 58.53
1983 37.77 39.05 50.39 56.12 66.08 75.53 79.37 77.69 68.75 58.03 48.98 36.16 57.83
1984 32.63 44.45 43.55 55.73 65.40 77.73 75.95 76.98 67.47 66.13 46.58 47.69 58.36
1985 32.56 40.14 49.73 62.02 68.03 74.25 78.98 77.42 70.78 62.58 56.57 37.73 59.23
1986 36.18 39.30 49.95 59.20 66.85 76.10 80.85 74.18 70.82 61.76 49.08 40.84 58.76
1987 34.74 36.93 47.02 54.23 67.29 75.75 81.27 78.45 72.22 52.85 51.22 42.97 57.91
1988 32.29 39.02 47.87 56.00 65.74 72.72 79.89 79.76 68.38 53.55 50.58 39.15 57.08
1989 42.29 39.54 47.89 55.80 64.13 76.10 77.66 75.34 70.75 60.24 49.22 31.26 57.52
1990 46.26 47.95 52.05 57.92 65.74 75.02 79.89 76.26 69.50 63.10 52.55 46.24 61.04
1991 40.21 44.00 50.79 60.13 72.06 75.25 80.68 78.55 71.53 59.85 49.52 44.24 60.57
1992 40.65 42.67 47.18 57.78 61.73 70.82 79.45 73.68 70.23 56.26 50.60 40.92 57.66
1993 41.39 37.73 45.84 55.90 67.66 75.00 82.42 78.48 72.52 58.56 50.87 38.97 58.78
1994 33.40 40.18 48.87 63.15 63.15 78.00 81.13 75.39 69.17 57.58 52.63 45.63 59.02
1995 40.65 38.62 50.16 58.05 65.77 74.07 80.79 78.87 69.05 61.11 44.15 35.56 58.07
1996 34.10 37.79 43.23 57.85 64.81 75.03 76.34 74.23 70.10 58.89 43.13 43.74 56.60
1997 37.63 43.68 49.56 53.55 62.85 71.35 77.82 75.79 70.27 58.94 46.50 39.90 57.32
1998 43.21 44.18 48.48 57.93 67.35 73.93 78.27 78.26 74.15 59.68 49.52 44.15 59.93
1999 41.92 42.12 45.21 57.68 65.47 72.23 79.63 77.90 68.45 57.16 52.83 42.35 58.58
2000 35.93 a 43.12 a 51.90 56.38 68.00 75.32 74.65 74.90 67.52 59.63 46.07 32.90 a 57.19
2001 37.13 42.25 45.23 58.43 a 65.23 a 74.92 74.89 78.13 67.80 59.02 54.53 45.98 58.63
2002 42.10 42.71 49.15 60.47 65.37 75.98 80.18 79.29 71.80 59.98 47.72 38.50 59.44
2003 33.23 a 36.71 49.58 56.90 63.48 72.73 77.79 78.31 70.02 58.05 53.83 39.61 57.52
2004 33.34 38.67 49.94 59.07 73.05 74.52 78.63 75.63 71.57 60.15 52.57 42.32 59.12
2005 40.05 42.04 45.15 58.42 63.34 76.18 81.66 80.55 75.55 61.90 53.07 38.61 59.71
2006 45.03 40.27 49.77 60.15 65.39 74.90 81.47 80.65 69.92 59.76 53.65 47.26 60.68
2007 43.48 35.46 51.73 57.13 67.44 75.78 78.68 80.40 72.55 66.89 49.47 43.95 60.25
2008 39.98 43.52 50.90 59.48 65.47 78.95 79.11 77.23 71.92 58.76 48.87 44.53 59.89
2009 35.23 42.18 46.74 58.85 68.15 75.50 77.00 79.89 69.93 58.95 52.98 39.35 58.73
2010 36.02 35.27 51.90 62.23 70.24 81.12 82.76 79.90 74.57 61.11 49.95 33.27 59.86
2011 34.35 44.82 48.66 61.75 69.13 78.03 81.97 78.90 72.53 59.31 53.45 46.29 60.77
2012 42.65 44.71 58.26 58.60 a 70.50 v ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.05
Period of Record Statistics
MEAN 37.54 40.07 47.94 57.95 66.21 74.42 78.54 77.09 70.30 59.16 49.59 40.43 58.25
S.D. 4.58 3.84 3.47 2.48 2.52 2.24 2.04 1.96 2.35 2.92 2.93 4.23 1.27
SKEW 0.19 -0.48 -0.32 -0.13 0.52 0.20 0.06 0.12 0.22 0.11 -0.19 -0.09 0.14
MAX 49.68 48.47 58.26 63.15 73.05 81.12 82.76 80.69 75.55 66.89 56.57 48.89 61.04
MIN 25.23 28.57 35.85 52.72 60.63 70.05 74.65 73.02 65.50 52.85 42.68 31.26 55.37
NO YRS 64 64 64 64 63 63 63 63 63 63 63 62 62