MANASSAS, VIRGINIA

Monthly Average Maximum 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 82.00 q 83.54 c 89.48 84.00 65.06 56.30 46.00 70.73
1896 41.58 46.24 50.19 68.77 81.16 82.97 88.39 87.39 80.27 64.52 60.63 44.52 66.38
1897 39.19 46.04 57.00 67.00 74.90 81.97 88.16 ----- z 82.86 a 68.90 56.23 46.13 64.40
1898 44.84 43.79 57.52 62.47 74.94 85.70 88.32 85.81 81.73 66.19 51.03 44.10 65.54
1899 40.58 35.00 51.55 65.73 75.35 85.27 90.29 85.10 77.00 67.68 55.57 45.52 64.55
1900 44.19 44.21 47.84 63.57 77.26 81.53 90.15 k 90.16 84.03 70.03 58.33 44.48 64.15
1901 44.13 h 38.96 56.23 60.07 72.16 82.37 89.29 83.19 e 77.23 70.42 63.20 47.84 67.36
1902 49.90 47.04 60.26 60.28 a 76.26 84.13 89.90 83.52 75.70 69.58 59.57 41.71 66.49
1903 40.26 39.25 59.29 64.07 75.00 74.23 86.42 80.65 76.73 66.42 ----- z ----- z 66.23
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 84.39 84.65 74.93 b 69.55 59.37 42.55 69.24
1951 47.87 48.21 55.22 d 66.47 75.32 81.90 86.81 85.23 80.20 70.81 52.87 47.77 66.56
1952 48.32 49.34 53.03 66.33 73.55 86.53 89.06 84.13 79.20 66.48 58.00 44.65 66.55
1953 48.58 51.61 56.19 66.23 79.19 83.50 89.39 87.03 80.97 72.71 59.60 49.81 68.73
1954 44.84 54.50 55.93 a 72.31 a 71.84 85.79 a 89.41 b 83.59 b 84.27 72.93 a 53.38 a 43.94 67.73
1955 42.31 b 47.25 56.79 c 69.70 77.45 b 79.03 90.48 81.35 72.89 b 64.26 51.96 c 42.35 e 64.65
1956 40.77 e 50.44 b 55.25 c 65.45 a 76.71 c 84.36 b 84.90 a 83.68 i 75.56 c 68.00 d 58.75 f 54.80 a 65.62
1957 41.65 49.82 55.77 72.43 80.10 87.07 90.81 87.55 81.97 64.58 57.67 48.90 68.19
1958 41.10 38.64 48.10 67.36 b 75.39 81.77 89.00 85.80 a 80.43 69.97 60.21 a 40.96 d 64.89
1959 45.00 a 50.58 b 58.52 72.86 a 81.71 86.37 86.55 88.97 b 80.40 j 70.37 a 55.52 a 50.26 d 67.88
1960 46.17 b 46.74 b 44.52 d 75.04 g 75.27 i 84.43 g 86.88 e 88.28 b 79.12 d 67.57 h 62.59 h 40.75 c 61.78
1961 37.75 c 48.16 c 59.80 a 62.77 d 73.58 84.31 a 88.17 b 86.27 a 84.81 c 71.86 b 60.41 a 43.83 b 66.81
1962 44.45 44.61 56.84 f 68.90 80.77 a 84.44 c 86.30 d 86.71 c 77.04 c 72.48 56.03 a 43.93 b 67.79
1963 ----- z 41.89 61.13 a 70.27 78.08 g 83.79 b 87.68 86.06 79.50 ----- z 61.62 i 39.86 b 68.77
1964 46.20 a 46.21 58.81 63.59 a 79.00 85.58 k 88.17 b 84.93 a 81.21 a 67.43 q 64.81 i 47.95 j 68.51
1965 48.13 50.68 54.64 c 67.70 86.19 e 83.73 87.90 88.45 83.31 d 71.68 62.83 52.93 d 69.85
1966 43.55 k 45.68 61.16 62.93 77.57 a 87.55 a 92.58 89.16 79.07 69.39 60.21 b 44.82 c 70.01
1967 50.73 a 42.81 l 57.33 a 68.71 i 71.60 a 86.43 86.94 85.32 79.38 f 70.85 d 56.37 50.70 a 68.48
1968 40.71 44.86 a 63.32 70.27 72.81 85.17 88.19 89.71 82.67 70.16 57.33 44.42 67.47
1969 41.23 42.86 51.77 70.40 79.39 86.73 87.45 85.52 80.70 71.71 56.53 41.58 66.32
1970 37.80 a 47.32 50.94 66.43 81.03 85.10 87.68 87.48 85.33 71.13 56.47 47.81 67.04
1971 47.77 48.29 55.35 69.20 74.29 86.07 87.97 86.03 83.30 g 72.15 r 54.41 m 51.77 e 67.42
1972 ----- z 44.04 b 57.55 67.47 75.44 d 80.83 86.30 h 88.32 f 81.97 66.61 50.80 49.48 63.80
1973 48.39 43.71 59.97 64.23 74.13 85.73 86.97 a 87.58 82.77 73.35 61.00 48.23 68.00
1974 50.42 48.36 61.53 a 72.57 77.58 81.60 90.16 86.94 79.70 70.45 55.05 j 50.32 69.97
1975 50.39 47.93 ----- z 62.47 78.84 84.93 88.58 ----- z ----- z ----- z ----- z ----- z 68.86
1976 ----- z ----- z ----- z ----- z 74.61 85.83 87.29 87.03 82.40 64.67 a 54.89 c ----- z 76.67
1977 35.29 49.68 63.86 b 72.60 81.37 a 85.17 91.89 d 89.19 83.17 ----- z 58.30 44.58 68.64
1978 ----- z 37.64 55.10 71.00 75.70 a 88.37 88.42 e 89.55 84.10 ----- z 63.43 52.68 70.60
1979 39.53 a 37.04 61.17 b 67.70 c 76.87 83.84 e 87.23 87.23 77.50 68.45 62.83 l 49.35 66.90
1980 40.61 43.00 56.25 c 71.27 79.44 d 84.83 91.94 92.42 87.27 70.35 54.78 g 48.26 69.60
1981 40.55 52.71 55.19 74.17 77.07 a 88.77 ----- z 86.50 i 80.37 67.58 60.52 c ----- z 66.32
1982 37.16 ----- z 57.94 67.30 ----- z 81.87 89.10 84.42 79.57 ----- z ----- z ----- z 71.05
1983 ----- z ----- z ----- z 62.37 74.19 87.20 ----- z 93.48 j 84.23 h ----- z 59.17 l 40.45 k 74.59
1984 37.00 k 50.60 i 50.55 i 66.38 i 74.33 j ----- z ----- z 85.35 h ----- z 73.04 h 54.55 h ----- z 9999.00
1985 ----- z ----- z ----- z ----- z ----- z ----- z 88.55 ----- z ----- z ----- z ----- z ----- z 88.55
Period of Record Statistics
MEAN 43.65 45.74 56.27 67.28 76.84 84.28 88.28 86.54 80.57 69.09 57.57 46.43 66.81
S.D. 4.33 4.58 4.35 3.77 3.21 2.74 1.91 2.48 3.22 2.66 3.38 3.80 1.44
SKEW 0.06 -0.49 -0.65 -0.06 0.61 -1.28 -0.07 -0.14 -0.29 -0.38 -0.25 0.26 0.25
MAX 50.73 54.50 63.86 74.17 86.19 88.77 92.58 92.42 87.27 73.35 63.43 54.80 69.85
MIN 35.29 35.00 44.52 60.07 71.60 74.23 83.54 80.65 72.89 64.26 50.80 39.86 64.55
NO YRS 34 37 37 38 38 39 40 37 38 34 31 36 17