UNIONVILLE, MARYLAND

Monthly Average Maximum 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 88.32 80.19 75.57 62.06 52.73 47.52 67.73
1941 36.97 38.89 46.74 70.50 77.45 82.03 86.26 85.16 83.77 73.13 59.90 46.26 65.59
1942 39.87 38.96 54.35 68.90 78.13 81.97 85.65 81.94 78.20 67.45 55.43 38.55 64.12
1943 39.52 44.82 53.03 60.20 75.87 87.90 87.32 89.16 79.53 64.61 53.63 44.16 64.98
1944 42.35 42.72 49.48 60.57 80.55 84.77 88.94 87.48 78.17 65.74 53.63 38.94 64.45
1945 34.68 41.79 66.00 68.50 71.94 83.00 84.58 84.45 80.03 67.16 56.10 36.97 64.60
1946 43.03 44.32 61.94 64.97 74.90 80.93 86.71 79.97 80.87 71.71 59.23 46.97 66.30
1947 44.10 35.89 ----- z 63.43 70.45 77.30 80.45 82.81 74.47 69.58 50.63 40.68 62.71
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 80.19 76.77 63.42 57.07 43.68 64.22
1949 46.06 48.32 53.26 60.87 72.58 82.07 86.13 82.58 74.34 a 70.03 57.72 a 46.90 65.07
1950 53.00 42.71 49.48 60.93 73.19 81.50 84.10 84.48 72.93 69.52 55.37 40.35 63.96
1951 44.29 46.48 a 51.94 65.83 76.32 82.03 87.74 84.77 79.90 70.87 50.63 45.35 65.51
1952 45.77 46.59 50.48 64.83 71.94 84.90 88.10 84.55 80.10 68.10 56.07 43.68 65.42
1953 45.10 47.54 54.23 63.27 77.35 84.77 91.03 88.83 a 81.62 a 73.35 57.57 47.45 67.68
1954 41.35 51.39 53.35 69.77 71.94 85.50 89.19 83.68 80.83 70.45 51.57 42.03 65.92
1955 39.94 44.43 55.39 66.87 76.48 79.27 90.71 88.29 76.63 69.26 52.07 39.26 64.88
1956 38.93 a 45.83 50.74 62.77 74.65 83.20 83.68 83.61 74.63 66.94 54.47 51.81 64.27
1957 38.71 46.96 52.61 66.97 75.10 85.27 88.26 85.87 78.93 62.71 54.57 45.48 65.12
1958 38.29 35.79 46.10 64.27 73.65 78.73 85.52 83.23 77.87 66.61 56.27 38.26 62.05
1959 40.26 45.39 53.23 67.90 77.52 83.97 86.90 87.13 81.90 68.61 53.63 45.84 66.02
1960 41.58 42.24 41.68 70.57 70.40 a 81.70 83.94 85.61 77.10 66.16 57.23 37.45 62.97
1961 34.13 42.82 54.16 58.67 69.45 82.10 85.16 83.97 82.20 69.26 55.57 39.68 63.10
1962 39.19 39.57 50.42 65.00 77.10 81.87 82.77 84.29 73.87 69.00 51.07 37.81 62.66
1963 36.39 36.00 54.87 65.70 73.71 81.93 85.94 m 81.48 75.27 72.65 57.23 34.94 60.92
1964 41.23 39.97 54.23 60.60 77.83 a 84.60 85.94 81.10 a 78.10 63.94 59.33 44.16 64.25
1965 37.39 45.54 48.39 60.77 78.06 80.53 84.52 83.19 78.47 63.10 55.00 47.65 63.55
1966 36.10 39.93 56.19 58.83 72.39 83.27 89.19 85.97 73.83 63.84 55.73 40.87 63.01
1967 45.97 38.58 b 52.03 65.67 67.03 83.67 82.77 80.03 73.93 63.97 49.20 43.71 62.21
1968 36.29 39.52 57.58 66.33 69.45 80.80 84.94 85.23 77.43 65.68 52.83 40.45 63.04
1969 36.90 38.93 48.68 66.50 74.48 81.93 83.81 83.26 76.90 65.90 51.90 37.90 62.26
1970 33.39 42.21 46.77 63.67 77.45 80.87 84.52 84.13 81.23 67.42 53.13 42.71 63.13
1971 34.58 42.39 49.35 64.43 70.39 81.30 83.68 81.10 76.70 68.84 52.33 50.16 62.94
1972 43.19 40.21 52.26 62.70 73.48 75.97 83.32 82.77 79.30 61.16 49.80 46.10 62.52
1973 44.06 43.07 57.42 61.60 69.19 82.53 85.03 84.58 78.57 68.19 57.20 43.74 64.60
1974 44.87 44.18 55.74 67.67 71.90 77.40 84.42 82.65 73.60 64.16 55.30 45.00 63.91
1975 44.84 43.64 49.55 58.33 75.35 79.87 83.00 84.10 71.27 68.71 60.37 42.35 63.45
1976 35.39 54.04 a 58.32 69.20 71.58 82.97 81.94 81.87 75.83 60.06 49.77 39.65 63.38
1977 28.90 44.36 60.10 67.70 77.35 79.60 87.35 83.77 78.63 62.29 53.63 40.87 63.71
1978 34.23 33.14 48.16 64.90 71.32 81.80 82.74 85.16 78.03 66.03 56.20 47.10 62.40
1979 37.29 31.32 58.39 61.83 73.74 79.27 82.19 82.16 75.43 63.81 59.07 47.94 62.70
1980 37.68 39.62 50.35 65.10 75.90 80.37 87.84 87.39 82.23 66.32 51.63 44.06 64.04
1981 36.39 50.07 52.81 68.53 73.52 82.70 84.03 82.71 77.20 64.65 55.30 40.97 64.07
1982 34.77 46.36 55.58 64.77 78.39 78.47 85.55 81.39 76.40 67.71 59.53 50.58 64.96
1983 41.32 43.82 54.58 60.40 72.48 82.47 88.32 87.65 81.30 67.48 56.27 38.90 64.58
1984 35.42 49.24 46.19 61.37 71.97 84.33 84.26 84.03 75.93 71.52 54.60 54.48 64.45
1985 37.32 45.00 58.45 71.10 77.52 81.17 86.94 84.35 81.17 68.58 60.47 40.90 66.08
1986 42.48 38.96 56.35 65.87 79.45 86.87 91.71 83.00 79.17 69.13 53.30 44.26 65.88
1987 38.00 43.04 58.97 63.50 78.65 85.33 89.29 86.32 78.17 64.42 59.07 46.13 65.91
1988 37.40 a 44.24 55.90 64.27 75.26 87.66 a 93.00 91.06 78.43 62.74 58.90 45.23 66.17
1989 46.74 45.86 53.16 64.33 72.19 83.10 85.58 82.71 77.53 69.55 55.30 32.06 64.01
1990 49.29 50.89 57.68 63.87 71.23 82.80 86.03 82.58 76.07 69.65 60.23 50.39 66.72
1991 41.87 49.39 55.55 66.43 81.58 85.43 88.97 88.03 77.33 68.94 54.83 46.61 67.08
1992 43.29 47.03 51.03 63.50 71.94 79.03 84.68 80.81 75.80 64.13 53.30 42.29 63.07
1993 44.35 40.54 46.94 64.80 76.84 84.23 90.26 88.19 77.80 65.68 56.23 41.65 64.79
1994 32.23 41.46 50.90 72.53 72.81 87.57 87.58 81.77 76.37 66.13 59.10 48.42 64.74
1995 41.35 39.57 57.03 66.20 73.45 83.23 89.74 89.39 79.07 72.65 49.47 38.74 64.99
1996 37.00 42.69 49.84 67.87 71.74 86.63 84.74 84.77 77.57 67.55 48.83 ----- z 65.38
Period of Record Statistics
MEAN 39.91 43.06 53.11 64.84 74.30 82.44 86.17 84.23 77.72 67.06 55.03 43.32 64.37
S.D. 4.62 4.52 4.48 3.33 3.17 2.66 2.72 2.61 2.64 3.16 3.17 4.44 1.36
SKEW 0.28 -0.11 0.16 0.09 0.12 -0.08 0.36 0.52 0.00 -0.01 -0.10 0.04 0.26
MAX 53.00 54.04 66.00 72.53 81.58 87.90 93.00 91.06 83.77 73.35 60.47 54.48 67.68
MIN 28.90 31.32 41.68 58.33 67.03 75.97 80.45 79.97 71.27 60.06 48.83 32.06 62.05
NO YRS 55 55 54 55 55 55 55 57 57 57 57 56 52