MARTINSVILLE FILTER PLA, VIRGINIA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(445300)

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
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1934 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1935 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1936 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1937 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.47 k 44.83 a 34.44 c 31.00 36.76
1938 29.84 36.18 42.32 46.07 55.13 59.97 67.06 66.48 60.67 45.06 39.73 24.32 47.74
1939 33.26 35.00 40.68 43.57 54.39 66.27 64.77 65.26 59.83 48.25 c 35.37 31.74 48.20
1940 19.52 30.31 34.65 43.90 52.71 63.53 65.29 65.87 55.00 45.13 39.50 35.03 45.87
1941 29.77 26.14 31.23 48.43 53.26 62.57 67.77 65.23 60.96 b 53.23 36.43 34.90 47.49
1942 28.48 27.46 38.23 46.90 56.94 64.93 68.13 65.42 59.27 49.39 39.33 29.23 47.81
1943 32.13 31.29 35.13 43.13 57.10 67.37 67.29 66.20 a 54.63 43.48 d 35.90 31.19 47.07
1944 30.16 33.45 34.97 43.17 58.90 64.80 65.68 63.87 59.93 46.52 39.07 26.90 47.28
1945 29.87 32.64 46.90 48.93 52.03 62.93 66.32 64.03 63.20 45.94 39.66 a 27.48 48.33
1946 31.63 a 32.61 44.42 46.60 52.97 61.47 64.45 62.23 58.10 47.52 35.07 27.29 47.03
1947 29.06 15.86 22.29 40.07 48.10 55.80 57.10 63.90 55.93 46.03 30.43 18.68 40.27
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 59.58 51.80 34.39 33.40 25.32 40.90
1949 33.00 28.43 28.65 38.90 49.61 59.31 a 66.94 62.26 50.90 46.52 26.23 24.10 42.90
1950 33.55 26.89 26.23 35.63 52.58 57.57 62.10 58.97 56.43 47.84 28.43 22.65 42.41
1951 25.68 23.75 35.67 a 39.87 47.58 59.40 61.26 61.68 54.17 44.58 29.73 27.03 42.53
1952 30.58 27.45 31.29 43.03 48.42 60.83 62.48 62.68 51.07 34.35 31.70 24.19 42.34
1953 28.52 29.61 34.03 40.40 55.19 61.27 61.35 60.19 50.87 40.32 28.57 25.52 42.99
1954 26.77 ----- z 32.71 45.33 46.52 56.30 61.10 61.29 52.17 41.71 31.00 25.23 43.65
1955 23.58 25.86 36.42 43.47 50.26 53.27 66.13 66.23 58.57 40.35 29.47 21.13 42.89
1956 23.03 30.90 31.94 38.60 50.90 56.33 64.03 60.77 53.27 48.13 33.50 34.71 43.84
1957 27.68 32.79 33.19 44.20 52.48 62.00 60.29 58.77 59.43 40.10 35.77 28.42 44.59
1958 21.16 22.36 31.48 42.30 51.16 59.43 66.00 61.87 50.10 39.74 33.83 20.48 41.66
1959 21.90 a 27.43 28.87 41.50 54.68 55.87 64.52 64.45 54.70 ----- z 31.50 26.35 42.89
1960 27.52 26.03 20.97 41.33 47.10 59.07 61.32 64.52 57.47 44.87 30.20 17.52 41.49
1961 17.65 28.75 36.45 36.53 46.19 56.50 60.55 62.84 56.40 38.16 38.07 26.29 42.03
1962 22.52 29.00 31.06 37.47 53.13 59.40 60.35 59.84 51.77 43.29 34.40 22.06 42.02
1963 ----- z 18.43 33.68 40.23 49.81 56.73 60.43 h 58.13 50.90 37.45 34.10 19.16 39.86
1964 23.35 24.00 33.29 44.87 49.26 57.73 60.61 60.52 51.17 37.19 32.60 30.55 42.10
1965 24.23 25.21 30.23 41.97 53.06 56.27 62.13 60.29 56.13 38.06 33.37 24.58 42.13
1966 21.26 25.25 30.26 38.87 50.81 53.83 60.13 60.35 51.37 39.55 31.67 25.97 40.78
1967 27.45 23.68 33.77 42.93 46.39 56.50 61.68 60.84 49.17 40.06 29.77 30.77 41.92
1968 20.94 17.24 33.31 b 41.47 48.29 57.87 62.94 62.87 51.34 a 45.06 35.30 25.42 41.84
1969 23.48 27.64 28.10 43.27 50.77 61.47 65.39 60.26 54.40 43.23 30.63 25.97 42.88
1970 18.13 24.82 30.26 41.07 50.81 58.43 62.48 61.45 58.70 45.58 33.53 28.03 42.77
1971 23.74 25.32 30.06 ----- z 47.42 60.17 61.84 60.23 57.70 50.45 32.53 35.10 44.05
1972 27.32 25.03 32.68 40.00 49.06 55.27 61.97 61.19 54.87 ----- z 33.73 33.16 43.12
1973 24.03 23.32 40.19 41.30 47.23 61.67 63.03 61.77 58.43 43.29 37.33 27.81 44.12
1974 36.45 b 25.59 a 35.97 40.36 b 50.42 56.10 61.65 63.87 54.83 ----- z 31.77 ----- z 45.70
1975 25.84 29.36 31.48 36.97 53.45 ----- z 64.55 ----- z ----- z ----- z 34.40 27.23 37.91
1976 20.03 32.54 a 32.94 39.40 49.03 58.63 60.00 59.16 49.93 38.32 25.83 20.58 40.53
1977 15.97 19.39 35.39 40.97 52.29 55.57 62.35 62.97 57.03 39.74 37.67 23.16 41.87
1978 18.81 19.14 ----- z 39.03 47.06 57.50 62.97 64.16 58.93 38.29 37.27 24.81 42.54
1979 23.19 18.75 33.00 40.50 49.68 56.27 61.84 ----- z 55.90 39.74 33.57 23.52 39.63
1980 26.77 17.48 29.61 37.73 47.07 a ----- z 64.55 63.13 58.47 40.87 29.87 22.35 39.81
1981 17.97 22.74 a 29.58 40.60 44.90 62.37 64.71 59.19 51.97 38.03 30.07 25.16 40.61
1982 18.00 a 27.79 33.32 37.17 a 51.74 59.97 65.06 61.06 53.17 44.45 35.07 31.94 43.23
1983 ----- z 23.36 34.32 ----- z 47.68 56.47 61.61 63.23 52.57 42.65 32.63 23.39 43.79
1984 21.00 28.86 31.16 37.93 46.35 58.93 62.29 62.65 51.37 51.81 31.10 31.68 42.93
1985 22.45 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 22.45
1986 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1987 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 32.55 32.40 30.13 31.69
1988 16.71 23.69 31.39 42.03 48.87 54.80 62.71 62.87 ----- z 34.23 32.33 23.13 39.34
1989 27.45 26.75 35.29 41.17 47.26 61.80 64.48 60.87 57.00 39.61 34.40 18.35 42.87
1990 27.81 24.21 32.65 39.70 50.06 56.23 63.71 62.23 54.13 ----- z 31.30 ----- z 44.20
1991 ----- z 26.54 34.19 43.24 a 56.03 59.67 65.97 63.10 55.13 39.90 30.77 27.39 45.63
1992 26.13 25.76 29.84 38.90 47.83 a 56.73 63.10 60.26 57.00 38.42 34.33 26.06 42.03
1993 27.42 23.54 30.06 38.07 50.35 56.30 65.48 62.61 56.40 40.74 31.53 22.94 42.12
1994 20.61 23.25 32.87 41.07 44.42 61.40 65.84 ----- z 50.47 38.90 a 33.13 30.03 40.18
1995 26.71 25.11 31.61 39.80 50.39 60.33 63.94 65.48 54.77 42.97 29.77 21.77 42.72
1996 22.52 25.24 28.68 38.87 51.45 58.73 61.71 62.32 55.43 43.68 29.03 27.23 42.07
1997 23.90 30.43 34.55 37.77 43.00 56.83 63.32 59.16 53.77 41.55 30.37 25.77 41.70
1998 29.39 30.43 33.19 41.10 55.00 61.27 64.13 61.94 57.27 41.97 32.50 31.10 44.94
1999 27.42 26.89 27.94 43.80 47.48 57.90 66.23 62.87 52.20 42.03 34.43 25.65 42.90
2000 22.52 27.76 34.03 42.97 51.35 61.57 64.23 62.68 54.83 39.55 29.63 18.29 42.45
2001 21.26 27.93 29.19 42.00 50.32 60.10 61.52 64.13 51.90 36.42 31.53 29.61 42.16
2002 25.00 24.75 32.26 43.23 49.16 60.87 65.58 62.23 57.53 48.32 32.03 22.16 43.59
2003 21.16 25.32 34.94 41.70 52.39 57.37 63.52 65.45 54.70 41.32 36.77 23.16 43.15
2004 21.87 23.45 32.35 40.17 55.29 61.13 63.87 60.55 56.50 47.84 36.63 25.61 43.77
2005 26.90 26.86 29.35 40.13 45.26 59.03 66.81 64.83 h 55.10 46.68 32.30 22.35 40.98
2006 29.32 23.61 30.52 42.47 45.10 57.23 63.84 64.84 53.97 40.00 32.27 26.87 42.50
2007 27.48 20.86 35.48 39.83 49.06 59.27 60.81 64.97 54.77 46.74 31.33 30.74 43.45
2008 22.61 27.91 f 33.97 43.90 49.48 60.50 62.35 58.68 57.07 38.29 28.80 25.81 43.77
2009 20.58 23.14 31.42 39.37 52.77 60.23 60.65 63.87 55.63 40.52 34.87 20.35 41.95
2010 19.03 19.50 30.52 37.93 53.74 62.53 64.06 65.03 54.57 41.68 28.70 21.13 41.54
2011 21.52 25.00 30.45 43.10 51.87 59.67 64.87 61.94 57.53 40.58 32.27 29.00 43.15
2012 24.48 25.83 38.23 39.81 c 53.62 w ----- z ----- z ----- z ----- z ----- z ----- z ----- z 32.09
Period of Record Statistics
MEAN 24.89 25.96 32.82 41.28 50.40 59.20 63.46 62.39 55.11 42.32 32.99 26.11 43.31
S.D. 4.53 4.25 4.19 2.77 3.33 2.91 2.23 2.14 3.10 4.35 3.14 4.28 2.10
SKEW 0.20 -0.03 0.55 0.50 0.20 0.43 -0.09 0.03 0.15 0.19 0.26 0.17 1.15
MAX 36.45 36.18 46.90 48.93 58.90 67.37 68.13 66.48 63.20 53.23 39.73 35.10 48.33
MIN 15.97 15.86 20.97 35.63 43.00 53.27 57.10 58.13 49.17 32.55 25.83 17.52 40.27
NO YRS 69 69 70 69 70 68 69 67 69 68 73 71 53