UNIONVILLE, MARYLAND

Monthly Average Temperature (Degrees Fahrenheit)

(189030)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 199611
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 74.34 70.48 62.08 50.56 43.70 38.55 56.62
1941 29.84 30.12 35.29 54.83 60.77 69.27 74.65 70.77 68.18 59.74 45.55 37.63 53.05
1942 30.52 30.77 43.69 53.73 64.98 71.20 74.03 71.42 65.70 56.15 44.57 30.44 53.10
1943 31.87 34.05 41.03 46.87 63.58 75.97 74.65 74.08 63.83 52.76 41.83 32.61 52.76
1944 32.31 34.03 38.95 49.12 66.87 71.60 74.90 73.08 66.88 52.29 42.95 30.44 52.79
1945 25.81 31.73 50.77 a 54.38 a 58.47 69.92 73.60 71.21 69.27 52.90 45.33 28.48 52.66
1946 33.23 33.82 48.32 49.88 61.53 68.07 73.21 67.58 65.57 56.98 46.53 35.89 53.38
1947 35.47 26.84 ----- z 50.82 58.71 66.47 69.89 73.23 64.23 56.60 40.78 30.95 52.18
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 69.95 63.85 51.63 a 47.12 34.18 53.35
1949 37.89 38.50 42.15 47.97 60.08 70.32 76.58 72.15 62.02 a 58.66 44.26 a 36.18 53.89
1950 42.08 34.41 38.18 47.50 61.73 68.92 72.31 72.00 63.48 56.77 43.08 30.79 52.60
1951 34.16 35.61 a 41.47 51.70 61.03 69.28 74.13 71.21 64.85 57.48 39.48 34.37 52.90
1952 36.23 36.64 40.05 52.82 59.66 71.93 75.52 71.74 63.73 50.53 43.38 34.56 53.07
1953 35.61 36.89 43.53 51.63 66.27 71.07 76.11 72.63 e 66.62 a 56.32 43.10 36.44 54.69
1954 30.68 38.36 40.44 55.72 58.76 71.00 74.06 72.27 67.72 57.37 40.77 33.18 53.36
1955 30.10 32.93 43.31 54.43 63.05 65.92 78.18 77.03 65.58 55.55 40.67 28.98 52.98
1956 28.53 a 35.90 39.21 49.23 59.94 70.07 72.92 71.44 62.68 55.29 43.05 41.50 52.48
1957 28.65 37.61 41.11 54.48 61.32 73.13 73.77 71.39 67.72 50.84 43.82 36.69 53.38
1958 30.32 27.41 37.02 51.98 60.55 66.58 74.95 70.98 64.35 53.66 44.85 27.06 50.81
1959 28.97 33.75 40.00 54.25 64.48 70.53 75.27 75.84 68.92 58.16 42.67 36.52 54.11
1960 33.68 34.10 29.87 55.15 58.82 a 68.95 71.69 74.26 66.50 53.60 43.95 24.58 51.26
1961 22.32 32.32 42.94 47.23 57.55 69.45 73.95 72.76 70.12 55.19 45.88 30.23 51.66
1962 29.18 30.55 38.24 51.35 64.47 69.90 70.92 71.34 61.65 54.65 d 40.17 27.00 50.78
1963 25.74 25.66 42.81 51.12 59.34 69.12 71.24 n 69.35 61.33 55.48 45.95 25.90 48.35
1964 29.97 29.59 41.44 49.22 61.95 a 70.62 74.16 69.32 a 63.93 50.03 a 45.15 35.11 51.71
1965 26.84 33.57 37.81 48.72 64.55 67.55 72.23 71.31 67.47 51.02 43.65 37.08 51.81
1966 27.50 30.36 43.08 47.32 59.95 69.47 75.56 73.39 62.47 51.60 43.97 31.68 51.36
1967 36.00 27.69 b 40.84 51.97 54.92 69.83 72.47 70.37 61.27 51.58 38.77 34.21 50.83
1968 25.35 28.79 44.45 51.97 57.10 68.68 73.61 73.65 64.30 55.55 44.18 31.50 51.59
1969 28.65 30.77 37.40 52.98 61.58 70.88 73.71 71.15 64.47 51.79 41.12 30.27 51.23
1970 22.66 31.64 36.34 50.90 63.92 69.53 73.47 72.24 68.25 57.26 44.12 33.65 52.00
1971 25.37 33.86 38.44 48.28 57.92 70.18 71.52 70.10 67.88 59.87 42.20 40.34 52.16
1972 33.89 30.03 40.98 48.88 60.94 65.92 73.29 70.81 67.62 49.94 40.13 38.37 51.73
1973 33.08 32.21 47.03 50.93 58.32 71.90 73.82 73.71 67.02 55.55 45.55 35.35 53.71
1974 36.21 33.02 44.16 53.37 60.44 66.47 72.58 72.06 62.93 50.16 43.48 36.03 52.58
1975 34.97 34.71 39.95 47.07 63.69 69.45 72.23 72.58 61.03 56.87 48.00 33.56 52.84
1976 27.48 40.04 a 46.00 53.52 59.15 71.33 70.98 69.00 62.40 50.00 37.30 28.73 51.33
1977 ----- z 32.41 a 46.77 52.67 62.98 67.10 74.26 72.68 66.82 50.63 45.90 32.03 54.93
1978 25.45 21.75 37.55 51.10 59.61 69.10 71.90 74.77 66.12 52.08 44.82 36.16 50.87
1979 29.61 20.38 44.65 50.42 62.11 67.35 71.61 71.87 64.95 a 52.92 48.00 37.21 51.76
1980 28.97 28.78 39.56 52.75 62.92 66.55 74.42 74.06 67.48 52.08 40.47 32.79 51.74
1981 24.72 b 37.80 39.76 55.27 59.85 70.98 72.89 69.68 64.63 51.34 43.87 31.98 51.90
1982 24.61 35.27 42.32 49.52 63.65 67.70 73.95 69.16 64.40 54.60 46.82 40.58 52.71
1983 31.92 31.34 44.18 49.35 59.15 69.64 a 73.29 74.08 65.22 55.31 44.58 30.81 52.40
1984 24.84 38.86 36.15 49.87 59.63 70.30 72.87 72.18 62.03 59.73 41.62 42.77 52.57
1985 27.61 33.91 43.85 54.77 62.44 67.57 72.97 71.21 65.27 54.89 48.77 30.24 52.79
1986 29.37 28.56 a 40.97 51.13 63.35 70.87 75.26 69.18 65.92 54.65 40.90 a 33.44 51.96
1987 27.82 30.16 42.03 49.68 62.53 70.32 75.32 71.27 66.25 48.65 44.28 35.77 52.01
1988 25.27 a 33.26 42.06 49.98 61.34 71.47 a 77.79 75.16 61.76 a 47.74 44.10 32.10 51.84
1989 34.15 33.09 41.69 50.13 59.98 72.42 74.79 72.37 66.12 55.58 43.18 21.48 52.08
1990 38.97 39.64 45.23 51.72 59.85 69.77 74.82 71.69 64.27 57.58 46.23 39.10 54.91
1991 32.21 37.86 44.37 53.17 67.71 71.10 77.13 74.85 65.18 55.15 43.32 36.82 54.91
1992 33.05 36.28 40.15 51.10 58.58 66.90 74.47 69.40 64.90 51.32 44.43 34.60 52.10
1993 35.69 30.09 37.40 51.47 63.00 70.50 76.94 74.71 66.68 53.19 45.68 m 30.98 53.70
1994 21.71 29.52 38.58 55.83 57.45 73.08 76.02 70.39 63.86 a 52.18 47.13 38.26 52.00
1995 34.29 29.38 43.97 50.87 59.98 70.62 77.47 75.97 65.35 57.97 39.42 30.52 52.98
1996 27.97 32.83 37.79 53.90 59.63 73.28 73.16 72.15 66.35 55.16 38.73 ----- z 53.72
Period of Record Statistics
MEAN 30.36 32.54 41.21 51.38 61.13 69.76 74.01 72.01 65.11 54.09 43.53 33.51 52.44
S.D. 4.50 4.10 3.60 2.43 2.60 2.05 1.77 1.96 2.21 3.00 2.55 4.29 1.01
SKEW 0.23 -0.53 -0.13 0.00 0.34 0.20 0.28 0.29 0.02 0.02 -0.26 -0.27 0.62
MAX 42.08 40.04 50.77 55.83 67.71 75.97 78.18 77.03 70.12 59.87 48.77 42.77 54.91
MIN 21.71 20.38 29.87 46.87 54.92 65.92 69.89 67.58 61.03 47.74 37.30 21.48 50.78
NO YRS 54 55 54 55 55 55 55 57 57 57 56 56 50