STERLING R & D CENTER, VIRGINIA

Monthly Average Minimum 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 57.53 41.58 39.80 22.39 40.33
1978 17.19 15.61 28.39 38.37 49.55 57.77 61.29 64.97 54.73 38.03 33.93 24.74 40.38
1979 21.94 11.89 a 31.84 41.10 50.61 55.70 62.74 62.48 56.72 a 42.74 37.20 27.77 41.90
1980 23.48 19.66 29.94 41.80 51.29 54.80 62.94 62.32 56.10 40.10 30.30 22.68 41.28
1981 16.29 24.32 28.06 43.27 47.94 61.07 62.68 57.35 53.87 38.52 34.07 22.71 40.84
1982 ----- z 24.86 30.35 36.60 51.39 58.73 63.23 57.90 53.03 42.84 36.20 31.16 44.21
1983 24.13 21.61 35.06 39.70 48.29 58.17 60.84 62.45 51.70 43.23 33.43 22.87 41.79
1984 16.06 29.17 27.87 39.87 49.10 58.90 62.06 63.61 51.03 50.65 30.37 31.48 42.51
1985 18.71 24.29 32.65 41.43 50.87 56.40 61.87 60.84 52.13 46.00 42.70 22.45 42.53
1986 20.77 23.54 30.35 41.10 49.45 57.86 a 65.10 60.13 56.80 43.65 31.27 26.16 42.18
1987 20.61 20.21 31.19 39.77 50.68 59.93 65.29 61.84 56.63 35.81 34.00 29.32 42.11
1988 14.77 23.79 30.35 39.67 50.42 56.03 63.00 64.90 51.13 35.29 32.60 22.94 40.41
1989 25.10 24.96 30.87 38.17 49.03 61.50 64.39 61.65 53.93 41.68 31.20 13.32 41.32
1990 28.97 30.00 33.68 41.53 ----- z 58.70 64.00 62.19 54.27 45.68 32.87 28.71 43.69
1991 23.06 25.68 34.87 43.23 55.61 57.77 64.55 61.16 53.00 41.48 33.10 27.39 43.41
1992 23.19 26.45 29.97 39.33 46.84 55.13 64.35 58.77 55.73 39.35 36.67 27.23 41.92
1993 27.29 22.29 29.84 39.40 51.45 57.67 64.90 62.32 54.67 39.39 30.80 24.03 42.00
1994 16.23 21.14 30.45 42.53 44.74 61.07 65.42 59.16 50.33 36.84 35.60 29.13 41.05
1995 28.74 19.71 33.13 38.57 50.13 60.43 65.48 63.45 53.10 43.94 29.63 23.32 42.47
1996 19.13 23.28 27.06 41.10 49.58 60.83 62.42 60.81 56.07 42.71 29.60 28.97 41.80
1997 21.16 28.75 33.06 37.23 44.58 53.90 59.97 56.52 49.47 38.26 29.00 24.61 39.71
1998 28.39 27.36 30.16 37.33 52.10 57.97 60.77 59.19 53.87 39.48 26.30 25.32 41.52
1999 21.03 a 21.57 26.71 36.10 43.71 54.77 61.68 58.13 53.27 36.06 34.70 24.39 39.34
2000 18.03 23.93 31.45 39.37 48.00 58.47 58.35 60.58 51.00 39.10 25.11 b 14.19 38.97
2001 17.48 22.71 24.55 37.67 46.81 57.03 57.06 61.81 48.90 36.32 30.97 25.58 38.91
2002 23.65 21.29 27.74 39.60 45.94 57.37 63.29 61.58 52.17 41.45 28.43 19.61 40.18
2003 17.32 20.11 28.87 35.37 50.42 57.87 62.84 65.32 56.00 38.32 36.03 23.06 40.96
2004 17.42 20.03 30.29 41.97 57.13 58.73 63.87 61.84 56.43 42.06 35.07 23.23 42.34
2005 24.61 23.07 27.55 39.00 44.90 59.67 65.94 63.31 e 54.43 49.35 e 31.33 20.68 41.99
2006 27.06 21.29 29.84 41.27 46.84 58.70 65.42 63.35 53.37 41.26 35.50 26.45 42.53
2007 26.81 15.57 28.71 37.60 49.84 59.33 61.03 64.58 54.43 47.16 33.23 27.06 42.11
2008 22.32 24.97 30.10 42.13 47.00 60.83 63.74 60.03 58.48 e 41.87 33.47 27.81 42.73
2009 19.19 25.07 31.42 41.60 52.81 61.30 62.90 66.68 57.50 43.52 38.37 24.74 43.76
2010 23.45 22.04 35.72 f 43.90 54.29 65.83 67.65 66.23 56.53 45.84 33.37 23.19 45.66
2011 20.16 24.82 31.73 a 45.40 55.40 a 63.60 68.87 64.94 60.53 44.68 35.70 29.87 45.48
2012 25.35 28.70 b 39.71 40.11 b 54.55 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.47
Period of Record Statistics
MEAN 21.74 22.96 30.52 40.06 49.60 58.64 63.23 61.84 54.25 41.55 33.20 24.82 41.63
S.D. 4.05 3.87 2.82 2.30 3.24 2.54 2.40 2.55 2.65 3.75 3.63 4.02 1.40
SKEW 0.14 -0.60 0.85 0.07 0.30 0.50 -0.22 -0.12 0.03 0.38 0.17 -0.88 0.15
MAX 28.97 30.00 39.71 45.40 57.13 65.83 68.87 66.68 60.53 50.65 42.70 31.48 45.48
MIN 14.77 11.89 24.55 35.37 43.71 53.90 57.06 56.52 48.90 35.29 25.11 13.32 38.91
NO YRS 34 35 34 35 33 34 34 34 35 35 35 35 31