ROCKY KNOB, VIRGINIA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(447330)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 197511
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
1940 ----- z ----- z ----- z ----- z ----- z ----- z 60.71 58.06 51.40 44.10 34.40 31.06 46.62
1941 21.86 c 19.57 24.55 45.17 51.53 a 61.97 68.94 68.03 65.60 57.71 n 36.40 30.97 b 44.96
1942 21.77 e 22.70 e 34.10 43.30 53.46 c 60.45 a 63.61 60.94 55.00 a 46.43 a 35.97 a 24.55 43.52
1943 27.26 25.20 h 29.43 a 38.53 51.39 h 63.50 62.00 61.42 51.83 43.70 a 33.50 26.90 a 43.81
1944 27.87 a 29.83 30.84 40.17 55.67 a 59.60 61.20 a 59.23 a 55.07 44.10 a 34.40 24.37 a 43.53
1945 25.00 a 28.82 43.50 a 44.13 47.73 a 59.67 61.10 a 60.00 a 58.47 43.63 a 36.77 22.20 a 44.25
1946 27.06 29.93 42.13 43.67 49.94 58.33 60.10 57.39 54.80 47.39 39.90 31.23 45.15
1947 32.35 18.86 24.77 44.93 50.00 58.63 58.74 62.77 55.17 48.97 31.73 26.03 b 42.75
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 60.77 55.27 41.33 j 40.20 34.40 k 52.08
1949 32.54 g 32.79 32.39 40.03 51.77 a 59.83 a 65.14 b 61.23 53.27 50.16 32.38 a 28.52 b 46.14
1950 36.71 27.93 28.26 38.53 53.06 58.47 60.71 60.39 54.53 48.48 31.13 22.13 a 43.36
1951 26.16 f 27.21 35.91 t ----- z ----- z 61.17 l 63.23 a 63.32 55.37 c 48.26 28.90 29.10 45.06
1952 30.39 28.34 31.94 42.43 52.48 63.96 d 62.77 e 61.35 e 52.93 b 38.37 a 36.34 a 28.07 b 44.11
1953 30.65 30.18 33.48 40.90 j 55.86 c 60.32 b 63.48 66.10 55.90 j 48.68 37.57 28.87 45.52
1954 27.42 31.36 31.00 46.87 47.55 59.07 ----- z 62.13 56.88 e ----- z 32.97 26.03 42.13
1955 24.23 27.29 ----- z 46.70 53.94 54.70 65.03 63.77 56.43 46.10 33.53 22.84 44.96
1956 22.65 30.41 31.90 39.90 51.23 58.30 66.81 67.87 58.33 52.48 38.67 42.10 a 46.72
1957 24.77 32.43 32.58 39.10 j 53.13 a 60.97 62.03 60.68 58.43 41.45 ----- z 28.74 45.52
1958 21.13 16.93 a ----- z 40.43 51.94 57.17 a 64.35 61.19 54.67 43.13 37.87 22.93 c 42.89
1959 22.90 a 26.50 31.00 44.70 53.07 c 57.86 i 62.12 e 63.48 d 56.77 h 45.82 c 33.40 29.71 c 41.27
1960 25.48 f 24.45 i 22.96 h 45.40 48.87 58.21 b 61.42 63.61 56.77 46.61 37.20 20.45 48.73
1961 22.81 d 26.74 e 34.94 35.79 a 44.58 57.24 e 61.62 j 61.23 57.32 e 44.46 c 38.00 c 26.10 40.84
1962 ----- z 26.84 c 28.68 c 39.37 56.41 d 57.50 f 60.30 k 62.59 b 54.00 g 44.12 f 32.00 g 18.81 e 38.78
1963 18.52 15.82 34.84 42.17 45.04 h 55.20 o 60.96 f 59.27 e 49.91 h ----- z 36.87 17.79 c 32.18
1964 22.28 b 21.56 b ----- z 41.50 49.91 i ----- z 61.23 58.23 a 53.97 a ----- z 40.07 27.50 c 40.79
1965 24.40 a 22.43 28.10 b 42.57 57.03 56.69 a 60.61 61.40 a 57.17 a 41.90 b 36.40 30.43 a 43.26
1966 19.35 23.96 34.23 40.03 48.94 57.54 b 62.13 a 60.13 54.92 f 43.47 a 37.23 26.40 a 41.22
1967 28.72 b 22.00 a 32.58 44.23 45.58 57.67 59.31 b 59.67 a 50.07 a 42.45 b 30.10 a 28.97 41.78
1968 22.19 16.03 33.03 43.37 47.32 55.83 a 61.29 61.77 51.25 f 45.03 33.83 a 20.26 40.00
1969 20.50 c 22.36 24.83 a 43.17 51.16 58.00 b 63.94 59.35 54.00 f 43.45 29.57 21.81 39.83
1970 18.55 22.85 h ----- z ----- z 53.61 58.41 a 61.35 61.45 56.74 c ----- z ----- z 25.40 p 51.69
1971 21.77 ----- z ----- z 40.68 b 46.56 f 60.00 b 58.97 a 56.68 56.40 51.92 r ----- z 33.16 46.81
1972 29.45 19.23 p 31.48 ----- z 49.69 o 50.21 a 59.19 57.55 ----- z ----- z ----- z ----- z 45.58
1973 ----- z 19.64 37.61 40.37 45.39 58.83 61.06 60.10 54.83 42.65 33.50 21.23 43.20
1974 32.42 24.96 ----- z ----- z 50.85 d ----- z ----- z ----- z ----- z ----- z ----- z ----- z 36.08
1975 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.47 l 39.18 b ----- z 39.18
Period of Record Statistics
MEAN 25.18 25.12 32.09 42.15 51.19 58.65 62.16 61.27 55.64 45.25 35.27 26.43 43.84
S.D. 4.62 5.02 4.59 2.72 3.38 2.67 2.34 2.63 2.94 3.14 3.17 4.97 1.35
SKEW 0.61 -0.33 0.59 -0.20 -0.23 -0.76 0.96 0.77 1.15 0.24 -0.28 0.72 0.75
MAX 36.71 32.79 43.50 46.87 57.03 63.96 68.94 68.03 65.60 52.48 40.20 42.10 46.72
MIN 18.52 15.82 24.55 35.79 44.58 50.21 58.74 56.68 50.07 38.37 28.90 17.79 41.78
NO YRS 28 28 25 27 27 27 29 34 26 25 30 31 10