MANASSAS, VIRGINIA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(445213)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 198507
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
1895 ----- z ----- z ----- z ----- z ----- z 61.40 60.23 a 63.81 58.50 37.68 35.20 28.81 49.37
1896 25.23 27.55 29.77 46.37 57.32 60.23 66.48 63.35 56.57 43.19 41.40 26.71 45.35
1897 22.52 28.89 36.87 41.23 50.97 59.03 65.90 ----- z 55.23 47.10 37.13 30.06 43.18
1898 28.87 24.57 40.29 40.20 54.87 61.40 68.58 67.81 60.00 49.74 35.80 27.06 46.60
1899 25.68 19.54 34.84 44.37 55.13 63.87 66.19 65.97 56.27 48.26 34.27 27.48 45.15
1900 26.10 23.86 30.48 43.63 53.45 63.43 67.42 68.84 64.60 51.29 40.97 27.39 46.79
1901 27.67 a 22.00 36.19 41.33 52.97 63.30 70.45 65.32 55.87 42.16 28.47 19.90 43.80
1902 16.97 27.18 28.10 37.83 a 51.52 57.73 64.16 61.61 56.13 47.45 40.27 27.45 43.03
1903 24.48 15.96 39.81 42.33 52.19 60.50 65.35 63.87 55.83 46.42 ----- z ----- z 46.68
1904 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1905 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1906 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1907 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1908 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1909 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1910 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1911 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1912 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1913 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1914 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1916 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1917 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1918 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1919 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1920 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1921 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1922 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1923 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
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 ----- z ----- z ----- z ----- z 9999.00
1938 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1939 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1940 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1941 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1942 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1943 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1944 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1945 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1946 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1947 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1949 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1950 ----- z ----- z ----- z ----- z ----- z ----- z 62.87 59.74 55.79 b 47.29 33.90 23.77 47.23
1951 27.97 28.04 33.77 41.73 50.48 60.77 65.19 61.90 56.30 48.81 31.27 29.29 44.63
1952 30.87 30.17 32.61 45.27 52.10 64.00 66.13 64.00 54.07 39.71 37.53 28.90 45.45
1953 31.35 31.21 35.42 43.23 58.26 61.37 64.71 61.87 53.50 44.00 32.97 28.16 45.50
1954 25.55 31.68 30.03 a 46.83 l 49.74 59.00 a 61.66 b 63.66 b 57.20 48.57 a 31.86 a 27.35 44.21
1955 23.76 b 25.00 35.68 c 46.43 53.41 b 56.37 68.74 67.19 58.46 b 43.84 30.89 c 21.04 e 44.23
1956 22.62 e 29.67 b 31.36 c 39.79 a 48.93 c 60.18 b 64.27 a 61.20 k 52.96 c 46.70 d 35.21 f 35.03 a 43.15
1957 23.10 31.00 34.35 45.07 52.55 62.40 64.00 61.13 60.37 41.81 37.50 29.90 45.26
1958 23.97 20.86 31.19 44.71 b 52.16 59.03 67.74 62.97 a 54.73 42.87 37.45 a 21.04 c 43.23
1959 23.67 a 24.88 b 31.29 44.59 a 55.29 60.80 65.61 66.24 b 56.42 f 48.40 a 33.07 a 28.42 e 43.84
1960 25.41 b 22.11 b 14.85 d ----- z 49.76 n 58.91 g 61.96 e 65.52 b 59.35 d 44.48 h 36.64 h 19.14 c 38.33
1961 17.21 b 26.52 c 35.70 a 40.69 d 49.97 61.00 a 66.08 e 66.40 a 64.41 c 45.41 d 41.93 a 27.93 b 45.27
1962 24.71 25.71 33.38 g 43.30 55.90 a 62.07 c 62.74 d 63.29 c 53.93 c 46.48 33.79 a 21.28 b 44.84
1963 ----- z 18.11 34.13 a 42.33 50.29 g 58.43 b 63.48 61.35 53.23 ----- z 36.36 h 19.93 a 43.88
1964 24.62 b 25.41 33.58 42.97 a 51.10 60.04 c 66.16 61.93 a 56.45 a 39.05 i 33.62 i 27.62 j 46.92
1965 22.03 24.14 30.14 c 40.28 a 53.62 e 58.90 65.19 62.29 58.12 d 41.65 34.93 26.73 e 43.17
1966 22.43 j 25.68 32.84 41.67 51.33 a 60.07 a 65.42 63.13 55.73 42.10 34.89 b 27.04 c 45.44
1967 29.73 a 20.25 l 33.07 a 42.10 i 46.10 a 56.97 64.71 62.23 52.62 f 43.11 d 31.87 27.57 a 43.93
1968 18.47 a 20.36 a 34.35 42.17 48.13 60.00 65.23 65.00 54.70 47.97 36.63 26.06 43.26
1969 22.32 27.46 30.10 44.07 53.16 62.33 66.14 b 60.58 54.53 43.00 35.10 24.87 43.64
1970 17.83 a 24.32 31.03 42.03 54.06 59.97 65.52 63.68 60.30 48.39 38.27 28.71 44.51
1971 26.26 25.86 29.39 36.43 49.29 60.67 63.55 62.58 60.70 g 54.23 r 40.59 m 33.27 e 43.03
1972 ----- z 23.33 b 30.29 37.27 50.85 d 57.90 63.87 h 63.92 f 55.37 40.71 30.50 31.26 39.72
1973 24.39 24.32 37.35 44.03 51.00 63.30 65.23 a 65.61 59.17 46.97 34.93 a 29.90 45.52
1974 31.29 25.14 34.13 40.61 b 53.77 58.80 64.26 64.81 57.50 41.03 a 35.40 j 30.26 45.60
1975 27.32 30.00 ----- z 40.43 57.74 62.73 66.52 ----- z ----- z ----- z ----- z ----- z 47.46
1976 ----- z ----- z ----- z ----- z 46.13 60.87 64.58 61.45 55.60 38.73 a 30.52 c ----- z 51.13
1977 15.55 24.46 b 39.14 b 40.43 54.00 a 58.63 68.18 i 66.26 60.53 ----- z 39.93 27.68 42.66
1978 ----- z 19.96 33.23 42.57 51.33 a 62.52 e 66.74 h 69.11 c 59.50 ----- z 37.60 29.74 45.06
1979 22.97 a 18.04 35.54 e 43.39 g 53.62 b 57.00 e 64.84 65.55 56.60 44.84 38.21 f 30.84 44.98
1980 26.65 22.59 b 32.91 i 45.73 53.67 g 57.03 a 66.59 b 66.61 60.86 b 43.65 33.58 d 25.71 44.90
1981 20.68 29.60 c 32.74 47.07 c 51.20 a 65.68 b ----- z 60.68 i 57.03 41.52 36.04 c ----- z 42.40
1982 19.39 ----- z 34.97 38.67 ----- z 59.80 65.29 59.06 53.57 ----- z ----- z ----- z 47.25
1983 ----- z ----- z ----- z 38.57 47.48 58.03 ----- z 66.57 j 56.95 h ----- z 37.33 l 26.85 k 48.03
1984 21.90 k 30.05 i 31.50 i 44.00 i 50.24 j ----- z ----- z 65.13 h ----- z 60.39 h 36.32 h ----- z 9999.00
1985 ----- z ----- z ----- z ----- z ----- z ----- z 66.60 a ----- z ----- z ----- z ----- z ----- z 66.60
Period of Record Statistics
MEAN 24.20 25.01 33.02 42.21 52.19 60.43 65.28 63.94 57.07 44.73 35.33 27.10 44.69
S.D. 4.05 3.95 4.31 2.66 2.91 2.19 1.96 2.46 2.84 3.40 3.43 3.72 1.16
SKEW -0.25 -0.27 -1.86 -0.19 -0.05 0.19 -0.03 0.19 0.84 -0.13 0.13 -0.53 0.09
MAX 31.35 31.68 40.29 47.07 58.26 65.68 70.45 69.11 64.60 51.29 41.93 35.03 46.79
MIN 15.55 15.96 14.85 36.43 46.10 56.37 60.23 59.06 52.96 37.68 28.47 19.14 43.03
NO YRS 35 37 36 36 37 41 39 37 38 34 32 36 18