GLENN DALE BELL STN, MARYLAND

Monthly Average 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 35.05 37.59 55.02 a 59.00 61.90 73.40 78.35 71.68 73.57 54.92 47.31 a 36.07 a 56.99
1922 29.85 37.05 44.18 54.18 b 64.50 a 73.32 75.56 71.40 68.07 57.08 44.57 35.50 54.61
1923 34.23 a 30.69 b 44.74 51.62 61.06 73.63 74.05 73.32 68.72 54.53 43.17 43.20 a 54.41
1924 34.57 a 32.28 41.87 49.95 59.56 70.00 73.19 73.44 63.50 a 54.95 44.28 34.77 52.70
1925 29.77 40.73 45.00 54.75 57.73 76.10 75.31 71.24 72.14 a 51.27 42.23 34.60 54.24
1926 30.85 34.57 38.19 50.65 62.37 68.20 75.60 75.32 68.53 55.29 41.55 30.84 52.66
1927 32.55 ----- z 44.21 49.40 61.50 66.92 73.95 68.19 66.43 57.06 49.05 36.21 55.04
1928 33.40 35.17 40.92 50.12 60.53 69.65 75.63 75.16 62.70 56.31 46.22 34.94 53.40
1929 32.11 31.21 48.16 55.72 62.68 70.45 74.84 72.27 68.37 52.69 46.03 35.42 54.16
1930 33.52 39.48 42.26 50.33 65.44 72.67 78.35 74.15 73.78 52.56 43.37 32.39 54.86
1931 33.48 36.29 39.37 52.25 62.11 71.32 77.60 73.94 72.20 57.66 50.88 42.21 55.78
1932 44.40 40.48 39.08 50.67 63.03 71.43 74.40 73.81 67.45 55.52 42.50 36.16 54.91
1933 40.37 36.80 40.92 53.60 65.85 72.42 73.87 74.27 70.47 53.81 42.90 36.35 55.14
1934 37.77 21.34 40.15 52.25 64.82 75.48 78.74 72.13 68.98 54.61 47.90 35.79 54.16
1935 31.40 32.89 49.23 50.18 59.71 70.77 76.66 74.74 65.08 56.32 49.32 30.65 53.91
1936 29.19 26.24 48.11 50.90 64.71 71.70 76.58 76.02 69.07 a 57.97 43.50 38.13 54.34
1937 43.40 36.32 40.02 a 52.47 63.50 73.58 75.19 75.98 63.93 54.58 44.82 34.92 54.89
1938 33.82 39.66 47.39 55.43 61.89 70.72 76.44 75.90 66.47 55.26 b 48.23 36.11 55.61
1939 34.95 40.11 45.34 51.82 64.89 73.52 73.84 76.32 68.63 56.27 42.40 37.61 55.47
1940 21.66 34.98 39.52 48.43 63.05 72.72 75.02 71.10 64.03 53.05 45.53 40.19 52.44
1941 32.37 32.43 37.97 56.68 64.18 70.82 75.68 72.66 69.07 61.56 46.77 39.08 54.94
1942 33.00 33.05 45.55 56.47 66.68 72.57 76.35 72.94 68.15 57.55 47.80 32.60 55.22
1943 34.68 36.41 44.61 50.37 65.68 77.18 75.68 76.32 65.75 54.79 43.77 34.19 54.95
1944 35.03 36.47 41.42 52.07 68.85 73.40 75.92 74.15 68.73 54.95 44.92 32.24 54.85
1945 29.76 36.52 53.79 57.22 60.89 71.75 74.89 72.84 72.28 54.79 48.05 30.21 55.25
1946 35.60 38.11 51.13 53.53 63.87 70.42 73.69 70.42 67.95 58.97 49.92 39.92 56.13
1947 40.45 30.25 37.10 55.78 63.66 69.85 73.52 76.34 68.73 61.21 43.20 33.26 54.45
1948 27.15 34.86 47.23 55.20 63.76 71.80 75.66 73.32 66.87 54.00 50.37 37.40 54.80
1949 41.98 42.45 45.47 52.80 63.97 72.53 79.16 75.27 65.42 61.29 45.33 39.06 57.06
1950 46.84 36.66 40.76 50.31 a 62.47 70.75 74.15 72.98 64.92 57.82 45.85 32.48 54.67
1951 36.74 36.86 43.44 53.03 62.45 71.35 76.15 73.39 67.73 59.11 42.07 38.47 55.07
1952 39.05 38.33 41.68 54.82 62.00 74.42 77.12 a 73.89 66.48 52.87 a 45.90 36.65 55.27
1953 39.47 39.72 a 45.03 53.92 67.76 72.12 76.26 73.69 67.60 56.95 45.10 38.82 56.37
1954 34.32 41.57 43.56 57.80 60.47 71.85 76.02 74.16 70.72 60.31 42.93 a 35.50 55.77
1955 32.89 36.00 46.42 56.95 65.66 67.75 80.34 77.76 67.92 57.92 a 44.50 31.37 55.46
1956 32.65 39.97 41.89 52.27 62.45 71.72 75.16 73.55 66.13 58.27 46.23 43.92 55.35
1957 30.85 40.02 a 43.31 57.87 65.50 74.48 75.18 a 73.31 70.15 52.84 47.27 39.61 55.87
1958 32.58 29.46 39.73 54.53 62.84 68.83 77.45 73.66 66.45 56.73 47.42 29.81 53.29
1959 32.35 36.09 43.61 56.82 67.39 72.05 75.90 76.69 68.95 59.73 44.93 38.31 56.07
1960 35.52 36.55 32.35 58.40 60.90 70.58 73.58 76.15 68.10 55.58 46.53 28.27 53.54
1961 26.19 36.88 45.68 49.40 59.81 70.62 75.13 73.81 71.97 57.60 49.37 34.84 54.27
1962 33.66 33.96 41.66 54.35 66.61 71.80 73.29 74.29 65.07 58.44 42.75 31.34 53.94
1963 31.00 29.79 47.63 54.52 62.42 71.37 75.34 72.98 64.43 58.71 49.22 29.42 53.90
1964 34.77 34.90 46.11 52.47 64.95 72.70 76.50 72.81 67.60 52.61 48.72 39.15 55.27
1965 32.77 36.82 40.98 52.37 68.18 70.55 75.05 73.81 69.93 54.10 46.77 38.81 55.01
1966 30.89 34.82 45.15 49.87 63.44 72.20 77.55 75.26 65.33 54.43 a 47.10 35.90 54.33
1967 39.00 32.66 43.23 55.38 58.03 71.47 74.37 73.13 64.68 54.73 41.88 36.90 53.79
1968 29.19 31.21 46.89 53.50 59.66 71.25 75.08 75.37 66.30 57.13 48.80 c 35.77 54.18
1969 32.82 34.88 41.45 56.62 64.18 73.30 76.53 73.10 67.40 55.69 44.70 33.90 54.55
1970 27.68 35.07 40.32 52.60 66.16 71.98 75.48 75.31 71.53 60.24 47.22 37.29 55.07
1971 29.82 37.57 41.97 51.98 60.89 73.08 74.48 73.06 70.18 62.65 45.70 44.27 55.47
1972 37.29 34.78 43.84 52.28 62.76 68.32 75.63 73.24 68.75 53.79 44.08 41.15 54.66
1973 36.69 34.95 48.81 53.82 60.90 74.22 76.23 76.48 70.50 59.03 49.25 38.34 56.60
1974 39.95 35.79 47.13 57.23 63.42 68.62 75.39 74.90 67.38 53.95 47.67 a 40.02 55.95
1975 37.95 38.27 43.45 49.79 a 66.05 71.92 75.11 76.82 65.52 60.75 a 50.83 37.45 b 56.16
1976 31.39 44.91 48.68 a 56.45 62.94 73.48 73.79 70.98 b 66.77 51.59 b 39.29 b 32.77 a 54.42
1977 23.31 36.37 b 50.27 56.48 64.92 68.02 75.41 b 75.65 70.23 55.32 48.75 36.02 55.06
1978 29.26 26.96 41.44 53.52 a 61.55 70.52 72.63 76.13 68.03 55.47 48.37 39.03 53.57
1979 32.34 25.34 47.71 53.07 63.61 67.90 73.65 74.06 67.33 54.89 50.08 39.47 54.12
1980 33.94 32.14 42.08 54.50 64.60 68.17 75.71 76.85 71.15 55.13 43.73 36.21 54.52
1981 29.31 40.09 41.90 58.65 61.32 73.63 75.06 72.11 66.02 53.23 a 46.35 34.23 54.33
1982 26.71 36.70 44.10 51.47 64.68 68.97 74.48 70.98 65.77 56.42 48.98 43.95 54.43
1983 35.08 35.66 46.45 51.43 61.21 71.20 76.24 76.31 67.45 56.10 46.97 32.55 54.72
1984 28.68 40.53 39.63 52.22 62.77 72.95 73.10 74.16 64.34 a 61.26 45.07 45.52 55.02
1985 29.79 37.57 47.00 58.25 65.56 69.47 75.29 73.08 67.67 58.94 52.55 33.71 55.74
1986 33.95 33.98 45.32 53.30 64.68 72.55 77.71 71.60 68.37 58.68 44.28 37.03 55.12
1987 32.94 34.16 46.08 52.98 64.81 72.97 78.71 75.41 b 69.00 51.52 48.52 39.03 55.51
1988 28.32 37.34 44.98 52.13 62.34 71.57 77.79 77.18 ----- z 50.73 46.58 ----- z 54.90
1989 36.87 37.39 43.08 a 52.32 61.00 73.52 75.58 73.81 d 68.27 58.02 46.18 25.85 54.32
1990 41.48 44.21 47.56 53.63 61.53 71.43 76.90 73.24 67.50 60.69 49.25 43.23 57.56
1991 36.06 41.46 47.08 56.42 69.24 73.05 78.81 76.60 67.63 57.05 46.80 41.85 57.67
1992 37.29 40.09 43.45 53.72 59.58 68.13 76.08 71.37 67.40 53.74 46.73 39.32 54.74
1993 35.52 31.98 38.35 50.85 63.44 69.68 77.56 76.52 69.65 56.87 46.47 35.73 54.38
1994 28.05 34.29 42.84 59.75 61.32 76.77 80.16 73.40 67.22 54.79 51.88 41.21 55.97
1995 37.58 33.05 47.89 54.47 63.90 73.77 80.13 79.40 70.13 62.06 42.97 34.61 56.66
1996 33.76 36.41 41.19 55.58 62.26 74.25 75.13 74.31 68.58 57.18 41.57 41.39 55.13
1997 36.00 43.27 47.26 52.60 60.50 71.28 77.37 73.74 66.55 56.05 42.52 37.71 55.40
1998 40.42 42.16 48.39 56.00 66.39 71.52 76.35 76.24 72.92 56.60 46.70 41.98 57.97
1999 36.27 37.91 41.84 52.67 63.03 71.18 79.47 75.42 67.10 53.19 49.97 37.21 55.44
2000 32.50 36.79 47.42 a 52.06 c 64.47 a 72.50 71.87 72.73 65.18 55.10 42.43 29.27 53.53
2001 30.60 36.46 40.70 c 54.37 62.23 72.17 72.21 76.06 64.88 54.68 49.17 41.24 54.56
2002 37.24 39.07 44.10 57.47 61.73 73.57 78.48 77.90 68.58 54.92 43.43 32.85 55.78
2003 27.37 29.66 ----- z 52.22 59.90 69.42 76.31 77.65 67.85 53.02 50.68 35.23 54.48
2004 26.63 33.40 46.13 54.28 70.06 70.47 75.98 74.52 68.83 54.52 47.75 36.39 54.91
2005 32.94 36.02 38.94 53.37 57.85 72.37 77.23 77.06 71.03 57.48 48.07 34.03 54.70
2006 41.10 35.79 44.84 56.40 62.66 71.33 77.48 76.74 64.77 53.17 j ----- z 42.00 57.31
2007 38.26 28.09 39.77 p 49.82 65.38 n ----- z ----- z ----- z ----- z ----- z ----- z ----- z 38.72
Period of Record Statistics
MEAN 33.80 35.78 44.01 53.67 63.21 71.69 75.87 74.30 67.92 56.21 46.24 36.57 54.97
S.D. 4.63 4.19 3.76 2.61 2.52 2.03 1.81 1.99 2.38 2.70 2.79 4.00 1.06
SKEW 0.18 -0.63 0.09 0.24 0.31 0.01 0.31 -0.15 0.26 0.35 -0.04 -0.09 0.34
MAX 46.84 44.91 55.02 59.75 70.06 77.18 80.34 79.40 73.78 62.65 52.55 45.52 57.97
MIN 21.66 21.34 32.35 48.43 57.73 66.92 71.87 68.19 62.70 50.73 39.29 25.85 52.44
NO YRS 87 86 85 87 86 86 86 86 85 85 85 85 82