GLENN DALE BELL STN, MARYLAND

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(183675)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 200705
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
1921 45.03 48.43 69.19 72.50 72.94 87.13 89.52 84.39 85.70 69.68 56.97 45.29 68.90
1922 38.90 46.82 55.00 67.00 a 77.19 83.73 85.77 82.06 80.63 70.55 56.53 44.32 65.71
1923 42.84 40.11 a 58.81 64.87 75.32 85.80 85.39 84.81 80.13 68.48 53.87 53.30 a 66.14
1924 46.23 41.07 52.61 63.37 70.52 80.90 85.42 86.00 74.20 70.77 56.27 44.87 64.35
1925 39.29 52.50 57.61 68.73 72.71 91.17 88.32 85.03 84.73 60.68 53.40 42.61 66.40
1926 41.42 43.68 50.61 65.07 79.00 82.13 88.00 86.23 78.97 66.74 53.33 39.35 64.54
1927 41.84 ----- z 56.55 62.80 73.23 79.73 85.94 79.10 80.50 69.48 59.93 45.90 66.82
1928 46.00 45.41 52.26 63.60 74.16 80.73 88.29 86.29 73.17 69.26 56.43 46.55 65.18
1929 42.48 42.75 60.81 69.33 75.45 83.20 87.90 86.13 82.00 65.87 55.13 45.00 66.34
1930 43.23 52.32 55.94 64.43 80.87 87.67 93.52 90.55 89.73 68.26 54.17 41.55 68.52
1931 44.32 47.39 47.84 65.60 74.52 83.37 89.16 84.61 85.20 72.35 63.40 53.13 67.57
1932 53.61 52.76 50.26 65.63 76.61 84.37 87.29 88.10 81.03 67.06 54.40 48.35 67.46
1933 51.32 48.04 51.97 67.00 78.00 86.50 86.42 85.35 81.77 67.23 54.17 46.84 67.05
1934 48.65 34.18 53.65 66.07 78.23 87.73 90.81 82.94 78.70 67.77 60.57 46.16 66.29
1935 41.65 44.32 62.58 61.87 72.58 83.27 87.77 86.35 77.63 70.94 58.97 39.16 65.59
1936 38.81 37.45 61.16 64.30 78.97 84.40 89.16 88.00 81.10 70.68 55.50 48.61 66.51
1937 52.48 46.86 53.06 65.13 78.13 85.27 87.00 86.97 77.53 66.39 57.43 46.39 66.89
1938 43.77 50.79 61.32 69.87 73.58 83.20 87.97 88.71 77.23 70.34 b 62.77 46.48 68.00
1939 45.58 51.71 58.16 64.83 79.81 85.83 84.84 87.77 81.47 69.26 55.30 48.06 67.72
1940 33.35 45.86 50.77 60.67 75.74 85.40 88.29 80.29 78.03 65.74 56.53 50.97 64.30
1941 41.32 43.32 51.00 72.73 81.29 83.53 86.19 85.94 84.00 75.61 63.03 50.81 68.23
1942 44.45 44.18 58.45 73.30 80.16 84.47 88.39 84.06 81.23 69.65 60.50 41.94 67.56
1943 44.42 49.32 59.03 65.37 79.42 89.30 88.10 92.10 81.17 68.03 58.03 48.06 68.53
1944 47.58 48.21 53.94 65.97 83.29 87.37 90.16 87.48 79.93 69.10 57.10 42.45 67.71
1945 39.19 47.96 70.06 71.63 74.45 84.67 85.35 85.90 84.07 69.32 59.57 39.32 67.63
1946 46.35 50.75 65.35 68.40 76.16 83.47 86.87 82.97 81.60 73.23 63.33 53.03 69.29
1947 51.10 42.93 50.26 70.67 77.68 82.50 85.65 88.26 80.97 75.29 54.20 45.26 67.06
1948 38.19 48.00 61.06 68.47 76.10 85.03 87.68 86.16 80.70 66.42 61.90 49.16 67.41
1949 53.39 54.61 58.65 67.43 77.39 84.43 90.55 87.61 78.93 73.23 59.07 51.55 69.74
1950 58.39 46.39 54.19 64.90 74.58 84.27 85.97 85.03 75.37 70.65 59.77 42.81 66.86
1951 48.65 48.79 55.97 67.03 76.77 83.67 88.74 86.32 81.30 71.71 54.47 49.71 67.76
1952 49.45 49.48 53.23 67.10 74.81 87.83 89.40 a 85.61 80.93 68.03 a 57.53 46.68 67.51
1953 49.81 52.43 57.23 66.77 79.58 85.27 90.39 87.55 82.47 72.84 59.77 50.58 69.56
1954 46.81 56.04 57.32 72.00 73.87 86.03 91.74 86.55 85.63 73.77 54.33 45.58 69.14
1955 43.45 48.68 59.58 69.83 79.03 80.57 92.39 88.35 78.67 71.94 57.33 42.06 67.66
1956 42.45 51.45 53.90 65.80 77.16 85.07 85.90 85.65 78.50 69.39 57.73 54.81 67.32
1957 41.00 49.61 55.19 71.90 79.71 86.60 89.87 87.81 81.47 65.55 58.83 50.03 68.13
1958 42.06 39.14 48.84 66.87 75.23 81.03 88.42 85.19 80.23 69.94 60.10 41.32 64.86
1959 45.03 49.86 58.52 70.83 81.00 85.53 87.35 88.68 82.73 72.03 57.23 50.00 69.07
1960 45.13 46.72 44.29 74.73 73.90 84.60 86.71 87.94 80.07 68.45 61.33 41.74 66.30
1961 38.94 48.75 59.03 62.23 72.87 84.30 88.10 86.16 85.40 72.68 59.83 44.39 66.89
1962 44.77 43.93 54.39 68.07 80.48 83.63 85.77 88.16 78.10 71.97 54.27 42.06 66.30
1963 42.74 42.18 62.35 69.83 76.84 84.83 89.13 86.39 77.60 76.10 60.73 39.35 67.34
1964 47.84 46.17 59.61 65.13 79.65 86.77 88.90 84.97 81.53 67.13 63.37 49.65 68.39
1965 44.74 50.21 52.87 65.67 83.00 83.87 87.61 86.13 82.60 68.65 59.47 51.55 68.03
1966 40.65 45.57 60.55 62.17 77.74 86.57 92.10 88.90 77.70 68.97 60.27 45.61 67.23
1967 51.03 44.71 55.68 70.67 71.68 85.97 85.58 84.32 78.53 69.16 53.87 48.32 66.63
1968 41.39 43.69 62.55 69.50 73.39 84.97 87.74 88.71 81.07 69.74 59.61 b 45.16 67.29
1969 41.58 42.50 53.55 70.47 78.03 85.53 87.00 85.26 79.87 70.10 56.07 42.13 66.01
1970 38.35 46.82 51.42 66.47 80.42 84.73 86.84 87.61 85.43 71.68 57.23 46.77 66.98
1971 39.81 48.79 54.94 68.67 73.94 85.17 86.42 85.00 80.53 72.55 56.97 55.03 67.32
1972 47.39 45.48 55.39 66.87 75.29 79.50 86.42 85.32 80.63 65.90 54.73 49.84 66.06
1973 48.55 46.89 59.97 65.70 72.84 85.17 88.16 87.84 82.87 72.81 62.20 48.26 68.44
1974 49.87 48.32 59.77 71.60 76.06 80.20 87.90 85.55 79.10 69.58 61.10 a 50.74 68.32
1975 49.32 48.21 54.13 61.63 78.19 83.23 86.32 88.61 75.77 73.43 a 63.80 47.37 a 67.50
1976 41.35 59.52 62.33 a 72.23 75.90 86.20 87.06 85.68 80.57 63.94 53.80 44.65 67.77
1977 34.16 50.46 63.74 73.20 80.42 81.67 90.26 88.58 82.87 67.77 56.97 45.81 67.99
1978 38.13 37.39 53.97 68.47 74.48 84.63 86.74 87.74 81.53 70.71 59.97 52.03 66.32
1979 41.68 35.89 62.52 65.33 76.19 81.03 84.94 85.94 79.23 67.42 62.67 51.23 66.17
1980 43.06 44.07 54.13 68.03 78.42 83.10 89.81 89.74 84.97 68.94 55.07 47.81 67.26
1981 40.10 52.18 55.29 73.10 75.06 85.57 86.58 85.29 78.27 67.37 a 59.13 43.29 66.77
1982 37.48 47.54 56.77 66.30 79.23 80.33 87.71 84.58 79.77 70.13 61.30 53.94 67.09
1983 44.32 47.25 57.23 63.00 74.90 84.40 90.55 89.97 83.13 69.10 60.30 41.90 67.17
1984 40.23 52.24 50.10 64.40 75.55 86.33 84.13 86.42 79.00 73.77 58.00 57.87 67.34
1985 39.42 48.75 60.26 75.10 79.00 82.17 87.32 84.84 82.00 71.03 61.90 44.81 68.05
1986 46.74 42.89 59.65 66.73 79.23 86.77 90.06 82.52 79.63 71.45 55.40 47.68 67.40
1987 43.55 46.79 61.94 65.73 78.81 85.80 91.58 88.48 b 81.10 66.68 62.23 49.52 68.52
1988 40.03 48.97 59.77 65.33 75.26 86.33 91.26 89.16 ----- z 64.32 59.23 ----- z 67.97
1989 48.61 48.50 54.83 a 66.77 73.35 84.33 86.87 84.30 d 80.47 72.06 58.67 37.65 66.37
1990 52.94 58.57 61.52 67.13 73.77 84.20 88.74 83.74 80.03 73.68 64.63 56.03 70.42
1991 47.84 55.11 58.94 70.67 83.10 86.97 90.97 88.68 79.80 71.52 59.53 53.68 70.57
1992 48.97 52.66 56.65 66.63 72.39 80.20 87.19 82.90 78.33 67.03 57.00 47.35 66.44
1993 46.19 44.75 50.58 64.83 76.81 83.10 90.42 89.35 82.50 70.32 59.70 45.74 67.03
1994 38.13 46.68 56.26 75.70 76.32 91.17 91.45 86.19 80.30 70.29 65.93 53.90 69.36
1995 47.39 44.29 61.65 69.97 77.26 85.13 92.16 92.42 83.03 75.55 53.03 44.00 68.82
1996 43.45 46.03 53.61 68.90 73.94 86.10 85.90 85.23 78.73 69.32 51.60 49.87 66.06
1997 45.90 54.36 60.58 66.30 75.06 84.93 91.61 87.39 78.83 69.03 51.37 47.77 67.76
1998 49.97 50.93 59.52 69.23 77.48 82.07 89.16 89.35 85.93 67.65 59.00 51.77 69.34
1999 47.03 48.93 53.42 66.37 77.39 83.17 92.16 87.13 77.40 66.32 63.23 47.97 67.54
2000 42.94 49.21 61.42 64.80 77.00 83.47 82.52 82.81 75.67 69.61 54.53 40.32 65.36
2001 41.65 49.00 51.42 69.03 75.03 83.43 83.90 86.71 77.30 69.39 63.07 52.71 66.89
2002 49.10 52.64 56.39 69.90 74.06 85.83 91.06 90.03 80.60 64.32 53.43 43.58 67.58
2003 36.35 38.82 ----- z 63.60 68.42 78.80 86.42 87.94 77.57 65.35 62.40 45.58 64.66
2004 35.97 44.34 57.97 64.50 81.35 80.80 85.55 84.45 79.03 65.48 58.87 47.48 65.48
2005 42.23 48.21 49.77 67.57 70.77 83.43 87.52 86.94 84.23 66.71 61.23 43.74 66.03
2006 51.71 46.46 56.13 69.90 75.55 82.97 88.29 88.71 74.90 65.04 f ----- z 54.61 68.92
2007 48.00 37.04 55.00 c 61.17 77.26 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 55.69
Period of Record Statistics
MEAN 44.37 47.24 56.69 67.46 76.53 84.37 88.10 86.48 80.50 69.51 58.32 47.18 67.30
S.D. 4.80 4.78 4.62 3.35 2.98 2.39 2.23 2.33 2.88 2.91 3.35 4.42 1.29
SKEW 0.21 -0.26 0.18 0.32 0.04 0.09 0.23 -0.29 0.25 -0.07 0.01 0.10 0.03
MAX 58.39 59.52 70.06 75.70 83.29 91.17 93.52 92.42 89.73 76.10 65.93 57.87 70.57
MIN 33.35 34.18 44.29 60.67 68.42 78.80 82.52 79.10 73.17 60.68 51.37 37.65 64.30
NO YRS 87 86 86 87 87 86 86 86 85 85 85 85 82