STERLING R & D CENTER, VIRGINIA

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(448084)

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
1977 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 79.87 64.90 54.70 41.68 60.29
1978 35.94 34.00 47.84 64.50 71.19 82.20 83.52 85.94 79.70 67.94 57.70 49.68 63.34
1979 38.13 32.33 a 57.26 62.13 74.00 78.80 82.90 83.71 77.37 65.00 61.03 48.48 63.43
1980 39.84 39.79 49.39 65.40 76.03 81.27 88.03 88.48 84.23 66.94 53.63 44.10 64.76
1981 36.48 48.25 51.45 69.43 72.10 82.83 84.48 82.61 75.87 64.19 55.87 41.68 63.77
1982 ----- z 44.00 51.61 63.10 76.77 78.43 85.32 81.35 77.43 66.97 59.27 50.87 66.83
1983 41.29 44.00 53.94 59.77 72.19 82.17 89.03 90.00 81.40 66.58 56.77 39.32 64.70
1984 35.74 49.17 46.71 61.20 73.06 83.77 84.42 84.42 75.23 71.13 54.90 53.90 64.47
1985 36.42 44.79 56.23 70.27 75.45 80.03 87.29 84.39 80.93 68.52 59.33 42.19 65.49
1986 42.45 39.46 55.39 65.53 76.39 86.10 90.61 82.84 77.47 70.42 52.73 45.55 65.41
1987 39.71 42.96 55.90 62.60 74.87 83.97 89.71 87.58 78.60 63.77 59.13 46.90 65.48
1988 36.65 44.90 56.13 63.93 74.32 83.07 90.29 87.65 76.93 a 64.42 58.13 46.26 65.22
1989 46.39 44.79 53.52 64.73 73.06 84.37 85.48 82.84 79.07 70.13 56.77 33.90 64.59
1990 50.65 53.75 60.00 66.60 ----- z 83.50 87.03 82.32 77.73 71.52 62.37 51.00 67.86
1991 43.32 51.14 57.16 67.77 80.90 83.87 88.16 89.03 80.20 70.13 56.37 49.13 68.10
1992 45.13 47.52 51.06 64.33 70.68 78.87 85.35 81.35 76.43 65.16 53.30 43.26 63.54
1993 45.00 41.86 47.55 64.27 76.45 83.07 90.32 88.00 79.33 66.32 56.23 43.00 65.12
1994 33.87 42.93 51.48 71.97 71.74 86.27 87.29 82.90 77.57 67.81 62.27 50.90 65.58
1995 44.03 40.82 58.77 66.10 73.00 80.93 88.26 87.90 78.93 71.81 49.97 40.29 65.07
1996 40.45 43.21 48.87 66.03 71.32 83.93 83.71 83.81 77.77 68.10 51.17 47.10 63.79
1997 43.19 51.04 56.32 62.70 72.52 82.13 88.48 86.94 79.77 68.29 52.63 47.74 65.98
1998 49.03 50.04 55.35 68.50 77.71 81.70 87.97 89.97 86.67 70.10 60.07 53.87 69.25
1999 46.03 48.57 51.35 67.03 76.94 83.47 91.00 88.48 78.33 66.61 63.47 48.68 67.50
2000 42.94 50.10 60.68 64.27 77.26 83.43 82.71 83.19 77.23 71.58 55.50 38.55 65.62
2001 41.65 49.79 51.61 67.87 76.00 83.63 84.29 87.87 79.17 71.00 64.53 53.39 67.57
2002 49.90 52.64 56.45 70.00 74.97 85.50 89.13 90.42 81.50 65.35 54.10 42.90 67.74
2003 37.90 38.46 55.97 64.43 68.77 79.33 86.26 85.58 76.40 65.19 61.23 45.13 63.72
2004 36.48 42.93 57.29 64.97 79.94 80.03 84.58 83.32 78.30 65.10 58.17 46.58 64.81
2005 42.13 46.54 48.84 66.90 69.45 83.30 86.77 86.24 f 83.63 67.58 e 59.37 41.58 63.28
2006 50.35 45.75 55.29 69.00 73.16 82.30 87.55 89.03 74.03 64.32 57.03 52.97 66.73
2007 46.45 35.68 57.45 61.80 76.65 84.67 87.65 87.58 82.40 74.55 54.93 44.45 66.19
2008 43.55 45.48 54.61 65.43 70.32 85.20 87.06 83.71 78.77 65.97 53.00 45.32 64.87
2009 37.32 47.50 52.42 65.97 72.55 80.57 83.90 87.58 76.17 64.32 57.80 42.16 64.02
2010 40.03 37.11 57.72 f 70.13 75.81 87.57 91.65 86.61 84.50 69.32 56.20 37.13 66.91
2011 36.55 46.68 54.00 67.70 76.17 a 85.37 92.16 86.87 77.10 64.61 60.13 49.52 66.40
2012 46.19 50.11 b 64.48 64.93 b 75.45 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 56.43
Period of Record Statistics
MEAN 41.80 44.80 54.19 65.75 74.30 82.81 87.13 85.89 79.03 67.59 57.14 45.69 65.41
S.D. 4.67 5.27 4.04 2.83 2.89 2.27 2.61 2.73 2.78 2.79 3.52 4.94 1.50
SKEW 0.24 -0.52 0.15 0.14 0.15 -0.18 0.08 -0.10 0.85 0.51 0.11 -0.20 0.72
MAX 50.65 53.75 64.48 71.97 80.90 87.57 92.16 90.42 86.67 74.55 64.53 53.90 69.25
MIN 33.87 32.33 46.71 59.77 68.77 78.43 82.71 81.35 74.03 63.77 49.97 33.90 63.34
NO YRS 34 35 34 35 33 34 34 33 35 35 35 35 30