RICHMOND WSO AIRPORT, VIRGINIA

Monthly Average Maximum 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 54.61 57.18 60.58 67.07 77.84 85.67 88.97 85.71 78.03 72.68 61.03 53.55 70.24
1950 60.48 50.39 56.13 67.10 75.23 86.10 86.29 85.87 77.00 71.77 59.13 45.26 68.40
1951 51.61 52.71 56.97 69.23 76.90 85.00 89.26 85.77 81.07 71.68 56.00 b 46.87 h 70.56
1952 52.13 51.97 57.45 69.10 76.94 89.80 91.84 86.26 80.07 67.81 60.20 48.55 69.34
1953 52.19 54.18 58.71 70.53 82.61 86.00 91.84 88.97 81.90 73.45 61.67 53.06 71.26
1954 48.39 57.00 58.87 74.23 74.32 86.47 91.10 87.39 87.70 74.48 56.07 48.16 70.35
1955 45.48 52.82 61.48 72.83 79.35 81.23 91.29 86.97 79.07 71.32 58.60 44.68 68.76
1956 44.74 52.69 57.87 67.57 77.30 a 86.23 88.03 86.52 77.77 69.90 57.70 59.26 68.80
1957 44.45 52.50 57.68 73.93 78.94 85.90 90.29 84.97 80.40 64.45 60.53 52.55 68.88
1958 44.52 42.75 50.65 68.40 76.32 81.77 89.65 85.65 80.83 68.81 62.30 43.77 66.28
1959 48.61 52.68 59.42 71.77 81.10 86.23 86.10 88.61 80.93 70.77 58.10 51.68 69.67
1960 46.97 49.17 45.55 75.57 76.45 86.30 87.35 87.06 79.73 67.81 63.17 46.52 67.64
1961 44.77 52.86 61.87 65.17 76.16 84.07 89.84 87.29 84.70 71.94 60.93 46.35 68.83
1962 46.48 48.96 55.42 70.90 83.35 84.57 85.32 86.32 77.63 73.58 57.63 45.26 67.95
1963 45.29 43.61 63.00 72.60 76.16 82.63 88.29 88.03 76.60 74.10 62.37 42.26 67.91
1964 50.26 47.69 59.84 66.90 79.13 86.10 85.19 82.06 78.30 65.87 65.53 53.10 68.33
1965 46.48 49.82 52.87 64.97 81.81 80.90 83.74 86.68 81.40 68.06 60.23 53.03 67.50
1966 40.23 46.14 59.13 63.47 74.16 83.20 88.58 84.13 77.97 69.16 62.30 47.77 66.35
1967 52.23 45.75 59.52 72.07 73.10 84.77 86.94 85.35 77.93 71.32 57.30 52.61 68.24
1968 45.10 46.52 65.68 72.37 76.48 86.30 88.42 89.77 84.00 74.55 62.60 47.00 69.90
1969 43.00 43.82 54.06 70.70 78.45 85.80 87.26 85.23 78.73 70.39 57.97 44.00 66.62
1970 40.77 49.96 53.61 70.70 81.58 88.13 88.45 89.55 87.50 73.65 60.90 50.68 69.62
1971 42.68 49.79 55.52 70.57 74.77 84.07 86.52 85.00 80.67 72.19 59.87 58.77 68.37
1972 50.42 47.21 58.39 69.50 74.45 80.10 85.87 85.03 79.87 66.32 57.17 54.35 67.39
1973 49.06 49.54 62.48 69.27 76.61 85.67 87.35 87.61 83.73 73.87 65.07 51.32 70.13
1974 54.97 51.18 62.71 73.90 76.26 81.43 88.77 84.77 78.03 70.00 60.77 52.61 69.62
1975 51.74 51.75 56.16 65.17 79.58 84.43 85.58 89.77 78.73 74.29 67.30 51.45 69.66
1976 46.74 62.79 66.19 77.13 77.94 85.70 89.77 88.06 81.80 65.94 55.93 48.55 70.55
1977 35.16 54.46 67.03 76.13 81.39 86.13 93.58 91.19 85.00 69.03 61.23 49.23 70.80
1978 42.97 41.18 54.55 70.43 76.52 87.10 88.45 90.13 83.80 71.32 62.93 54.29 68.64
1979 45.94 38.25 64.71 70.37 77.81 82.23 85.68 87.42 78.80 70.03 65.00 53.68 68.33
1980 47.32 46.52 58.13 72.90 80.06 85.20 91.42 92.06 85.67 67.84 57.70 48.84 69.47
1981 42.06 54.07 57.10 73.20 75.32 88.20 89.23 84.74 81.17 68.74 60.17 46.06 68.34
1982 40.23 49.79 59.84 68.10 82.00 81.47 87.10 84.06 79.57 69.84 63.07 54.39 68.29
1983 45.39 47.68 59.81 66.43 77.32 85.70 91.55 89.84 80.90 67.81 60.40 44.45 68.11
1984 41.13 54.28 53.58 66.00 77.13 90.03 85.35 87.84 79.60 76.42 59.13 58.84 69.11
1985 41.84 50.57 61.90 76.83 80.23 85.63 90.10 87.45 82.17 72.23 65.43 48.10 70.21
1986 46.52 46.54 62.71 72.10 79.23 88.10 91.45 83.19 81.13 72.65 57.70 50.19 69.29
1987 43.65 47.39 59.16 64.50 79.10 87.00 92.35 89.32 81.67 66.65 63.37 52.23 68.86
1988 41.74 49.97 60.00 67.80 77.81 85.07 90.94 89.94 78.63 66.23 62.83 50.16 68.43
1989 53.39 49.25 57.87 67.50 75.52 86.10 86.94 83.55 79.90 71.94 60.37 40.29 67.72
1990 57.19 59.36 62.84 70.23 76.48 87.60 90.48 84.87 80.43 75.29 66.03 56.68 72.29
1991 49.74 56.00 61.52 71.50 84.06 86.73 90.03 88.74 83.27 72.74 60.87 55.26 71.71
1992 50.68 53.34 58.71 70.30 72.74 81.80 89.55 83.06 79.77 68.16 60.33 49.65 68.17
1993 50.32 48.29 56.26 67.97 79.68 86.50 93.97 89.48 83.00 70.29 62.13 47.87 69.65
1994 41.94 51.25 60.35 76.67 75.29 89.47 90.94 85.74 81.17 69.39 64.03 55.61 70.15
1995 48.77 48.36 62.45 71.40 76.77 83.93 92.19 89.74 79.50 73.19 54.23 45.13 68.81
1996 42.68 46.86 53.71 69.83 74.39 85.77 85.23 82.97 79.17 69.45 52.70 52.32 66.26
1997 47.16 53.14 61.19 64.83 75.42 82.50 88.32 86.65 81.43 70.03 55.70 49.10 67.96
1998 51.48 53.07 58.00 68.77 76.81 83.47 88.45 89.52 85.43 71.13 61.83 53.32 70.11
1999 52.35 53.39 56.10 69.63 77.55 81.80 89.42 88.03 76.93 68.23 64.37 52.48 69.19
2000 45.33 a 54.36 a 64.45 66.93 79.29 84.37 83.61 83.77 76.60 72.35 57.03 42.20 a 67.53
2001 47.52 53.11 55.84 70.97 76.45 84.77 85.77 88.06 78.37 72.26 66.97 56.58 69.72
2002 52.26 55.29 60.55 73.03 77.23 88.47 91.35 90.29 81.33 67.77 57.53 47.42 70.21
2003 41.03 a 45.11 61.29 67.77 72.16 81.93 86.77 86.65 79.00 68.94 65.00 49.55 67.10
2004 41.77 48.66 60.90 70.10 83.65 83.30 87.39 83.97 79.87 68.94 62.47 52.26 68.60
2005 49.26 52.25 55.00 70.47 74.00 86.13 90.84 89.87 87.43 71.77 65.03 48.10 70.01
2006 55.39 51.07 61.90 72.83 77.48 84.67 91.45 90.90 78.73 70.35 63.33 58.55 71.39
2007 53.06 45.39 64.32 69.03 78.42 86.53 89.87 90.94 84.27 78.06 60.53 52.35 71.07
2008 49.84 54.45 63.00 69.80 77.16 91.40 89.71 88.03 81.13 70.26 58.00 54.32 70.59
2009 44.45 53.93 56.87 70.63 78.42 85.03 87.39 89.45 79.60 68.84 62.13 47.94 68.72
2010 45.13 43.64 62.77 75.97 80.81 92.20 94.81 89.87 86.60 72.58 61.07 41.42 70.57
2011 42.84 56.54 58.90 73.60 80.03 88.90 92.81 89.45 80.60 69.26 64.97 57.06 71.25
2012 53.45 56.00 69.87 70.38 a 81.33 v ----- z ----- z ----- z ----- z ----- z ----- z ----- z 62.43
Period of Record Statistics
MEAN 47.27 50.57 59.23 70.28 77.73 85.39 88.93 87.23 80.85 70.64 60.86 50.36 69.08
S.D. 4.87 4.47 4.11 3.22 2.69 2.55 2.55 2.41 2.77 2.75 3.22 4.58 1.37
SKEW 0.24 -0.15 -0.33 0.12 0.34 0.18 0.06 -0.15 0.80 0.18 -0.17 -0.09 0.08
MAX 60.48 62.79 69.87 77.13 84.06 92.20 94.81 92.06 87.70 78.06 67.30 59.26 72.29
MIN 35.16 38.25 45.55 63.47 72.16 80.10 83.61 82.06 76.60 64.45 52.70 40.29 66.26
NO YRS 64 64 64 64 63 63 63 63 63 63 63 62 62