BELTSVILLE, MARYLAND

Monthly Average Temperature (Degrees Fahrenheit)

(180700)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201205
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
1941 ----- z ----- z ----- z ----- z 63.02 69.68 74.85 71.63 68.21 b 60.66 45.28 ----- z 64.76
1942 ----- z ----- z ----- z 53.42 65.15 a 71.92 75.08 71.65 66.95 56.08 45.40 ----- z 63.20
1943 ----- z ----- z ----- z 47.87 64.31 75.88 75.50 76.06 64.47 53.60 42.92 50.95 a 61.28
1944 ----- z ----- z ----- z ----- z 67.84 71.88 76.00 73.42 68.00 53.32 44.35 ----- z 64.97
1945 ----- z ----- z ----- z 55.68 59.16 70.48 74.15 72.15 70.62 54.02 45.97 ----- z 62.78
1946 ----- z ----- z ----- z 51.95 62.13 69.05 73.37 69.32 67.22 57.55 47.15 ----- z 62.22
1947 ----- z ----- z ----- z 52.27 62.18 68.65 72.48 75.23 66.85 60.26 41.92 31.71 59.06
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 72.89 66.00 53.10 48.42 36.11 55.30
1949 39.53 39.46 43.13 49.90 62.58 71.20 78.10 74.44 63.78 59.60 a 43.33 37.73 55.23
1950 42.90 35.00 37.74 48.53 60.32 69.33 72.47 71.97 63.80 56.73 44.35 31.44 52.88
1951 35.65 34.62 41.50 a 51.47 61.16 70.02 75.08 72.60 66.90 58.02 40.45 36.48 53.66
1952 36.84 36.50 39.63 53.85 60.74 72.80 77.08 73.74 65.78 a 51.76 45.47 36.18 54.20
1953 37.65 38.39 43.55 53.34 a 66.69 70.60 76.13 72.98 66.69 a 56.40 44.37 37.10 55.32
1954 31.82 38.91 41.60 55.85 58.98 70.18 74.34 72.20 a 68.95 59.27 42.12 33.95 54.01
1955 31.58 31.77 44.44 55.00 63.94 66.08 79.29 76.90 66.74 a 56.44 41.92 30.16 53.69
1956 30.63 37.29 39.58 50.00 59.40 70.25 73.74 71.95 64.75 55.90 44.43 41.81 53.31
1957 28.90 38.14 41.45 54.78 62.53 72.65 74.92 72.24 68.62 51.32 45.65 37.63 54.07
1958 31.06 27.20 a 39.05 53.08 60.77 67.22 76.40 72.18 65.82 54.98 46.18 28.08 51.84
1959 30.35 33.73 41.71 54.63 65.05 a 71.78 75.52 76.10 68.43 c 58.89 43.83 38.02 a 54.84
1960 34.58 35.48 31.72 a 56.82 59.61 69.93 73.32 75.15 67.74 a 54.95 46.07 b 26.26 52.64
1961 25.61 34.68 43.97 48.57 58.52 70.28 75.56 73.71 72.33 55.71 47.45 32.79 53.27
1962 31.32 30.50 40.61 53.02 64.56 71.15 71.97 a 73.53 63.85 56.40 41.55 31.15 a 52.47
1963 27.32 a 25.66 44.23 53.05 60.31 69.77 74.60 71.60 62.62 56.55 47.10 28.40 51.77
1964 31.82 31.90 44.03 51.17 63.26 71.17 76.26 71.71 65.93 a 50.82 46.62 a 37.24 53.49
1965 30.13 a 33.07 39.15 49.17 65.79 b 69.65 74.45 73.53 69.20 51.82 44.55 37.34 53.15
1966 29.48 a 32.30 a 43.44 48.97 60.44 70.60 77.13 74.48 65.27 52.47 a 45.88 b 35.21 c 52.97
1967 36.65 28.26 a 40.50 52.72 56.08 69.93 a 73.70 a 72.71 64.32 53.32 42.22 g 36.91 b 53.19
1968 26.06 g 30.84 44.52 e 53.02 a 58.47 69.75 75.45 75.74 67.00 b 57.67 a 47.43 b 33.50 55.76
1969 29.68 33.27 39.15 54.25 62.71 72.63 c 75.82 73.26 66.42 53.76 43.10 32.81 53.07
1970 25.21 33.68 38.00 50.93 64.29 70.48 75.15 74.44 70.25 58.50 46.17 36.11 53.60
1971 28.16 34.95 40.10 a 49.87 58.94 71.62 73.71 72.71 68.92 60.74 44.53 41.78 a 53.84
1972 34.67 a 31.81 41.79 50.58 61.69 66.82 74.81 72.90 67.72 52.10 42.88 40.77 53.21
1973 34.66 33.52 48.52 a 53.08 60.38 c 74.17 76.16 75.82 68.90 a 57.15 46.36 b 38.79 g 57.15
1974 37.55 34.09 e 44.03 53.57 61.87 68.43 b 74.34 c 74.80 c 66.23 52.41 d 46.48 37.85 a 54.30
1975 35.69 36.38 b 40.90 49.89 c 63.84 c 71.45 74.60 b 76.29 64.43 58.85 49.55 b 35.65 54.80
1976 29.25 a 40.55 47.28 b 55.38 60.24 73.55 74.32 a 72.27 65.78 a 50.71 39.32 29.68 a 53.19
1977 21.73 a 34.02 a 48.32 56.39 b 64.55 69.02 b 77.10 b 76.37 d 69.62 53.77 48.07 33.82 a 54.40
1978 28.88 b 25.48 a 39.58 52.66 b 61.31 b 71.09 b 73.16 76.63 69.03 a 52.64 b 47.15 37.35 52.91
1979 31.62 g 22.37 b 45.40 a 51.48 a 62.90 b 67.60 73.66 b 73.29 67.02 a 53.85 a 49.96 b 38.40 55.08
1980 32.71 30.74 39.85 a 54.05 63.27 68.63 d 76.79 76.50 a 71.03 53.98 a 42.98 b 34.00 a 53.71
1981 26.42 e 36.90 b 40.77 c 54.93 c 60.55 b 72.81 c 75.62 b 72.00 65.17 c 51.94 45.73 b 33.37 d 53.02
1982 24.05 34.91 41.73 50.10 64.53 69.43 75.97 71.56 66.83 55.60 48.25 41.76 53.73
1983 34.27 35.05 45.06 50.22 61.26 71.45 76.84 76.76 67.80 55.42 45.80 32.40 54.36
1984 27.10 39.64 36.81 50.85 61.47 72.60 73.87 75.26 64.88 61.65 43.92 43.35 54.28
1985 28.19 35.54 44.39 56.87 64.42 69.68 75.42 73.32 68.57 58.16 51.48 33.53 54.96
1986 32.44 33.04 44.05 53.40 64.82 73.48 78.29 72.50 68.08 58.15 43.37 37.15 54.90
1987 31.71 34.11 45.53 51.77 63.29 73.90 79.82 75.85 68.53 50.40 47.53 38.82 55.11
1988 26.16 35.64 44.55 51.27 63.05 71.63 79.05 77.45 65.48 50.81 45.67 35.50 53.85
1989 36.97 34.48 a 43.40 51.53 a 61.05 73.85 76.03 73.92 68.43 57.24 45.53 23.92 53.86
1990 40.02 40.95 47.40 53.70 61.29 72.00 77.29 73.58 66.27 59.10 48.82 40.98 56.78
1991 33.98 40.05 45.60 54.62 69.27 72.95 78.81 76.37 68.27 56.94 45.60 39.69 56.85
1992 35.13 37.84 41.58 52.18 59.39 69.37 76.37 71.37 66.97 52.98 46.82 36.73 53.89
1993 37.39 32.27 38.85 51.85 65.16 71.97 79.37 76.87 a 68.55 54.66 45.45 34.89 54.77
1994 26.39 33.52 41.69 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.87
1995 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 58.89 42.70 33.79 45.13
1996 31.34 34.28 39.50 53.92 61.48 74.20 74.63 74.27 68.20 56.15 41.47 40.19 54.14
1997 33.73 40.64 46.06 51.70 59.85 70.65 77.15 74.60 67.88 56.82 45.63 39.11 55.32
1998 40.65 41.20 45.16 56.33 66.47 72.00 76.79 76.77 73.60 58.05 46.83 42.34 58.02
1999 36.18 37.57 41.35 54.07 64.18 72.25 79.68 76.87 68.73 54.44 51.45 40.17 a 56.41
2000 32.71 38.88 48.61 53.22 65.02 73.25 72.90 73.84 66.53 57.19 44.55 30.24 54.75
2001 32.13 37.98 41.27 54.23 63.71 72.67 72.71 76.58 66.37 55.97 50.45 42.55 55.55
2002 38.34 39.82 44.89 56.72 62.24 73.68 77.98 78.35 69.62 56.39 44.60 34.42 56.42
2003 28.71 30.30 44.31 52.17 60.08 70.07 76.19 77.06 68.68 54.18 51.38 36.65 54.15
2004 28.15 34.50 46.02 54.33 69.89 70.92 75.89 74.47 69.52 55.58 49.23 37.32 55.48
2005 33.84 37.38 40.42 54.67 59.39 73.78 77.87 77.71 71.58 58.11 48.35 33.95 55.59
2006 40.68 36.09 44.66 57.15 62.10 72.52 78.47 78.24 66.08 55.26 49.35 43.05 56.97
2007 38.82 28.48 44.98 51.08 65.27 73.48 76.40 77.79 70.78 63.32 46.52 37.92 56.24
2008 35.50 37.31 44.63 55.63 61.06 75.07 76.92 72.89 69.90 55.53 45.18 38.06 55.64
2009 29.16 37.45 43.08 54.90 64.02 72.15 74.34 77.29 67.63 56.00 49.80 34.84 55.05
2010 32.84 30.84 48.48 57.82 66.56 77.77 79.66 76.94 70.70 58.45 46.63 32.31 56.58
2011 30.21 37.54 44.34 57.30 66.53 75.33 80.16 76.37 70.28 56.50 50.07 41.32 57.16
2012 37.23 40.84 52.71 54.02 57.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.20
Period of Record Statistics
MEAN 32.50 34.76 42.86 53.03 62.59 71.36 75.84 74.41 67.57 55.80 45.87 36.17 54.45
S.D. 4.60 4.05 3.42 2.39 2.70 2.19 2.01 2.11 2.19 2.85 2.68 4.57 1.39
SKEW 0.04 -0.69 -0.12 -0.08 0.35 0.15 0.32 0.01 0.20 0.13 0.06 0.07 0.43
MAX 42.90 41.20 52.71 57.82 69.89 77.77 80.16 78.35 73.60 63.32 51.48 50.95 58.02
MIN 21.73 22.37 31.72 47.87 56.08 66.08 71.97 69.32 62.62 50.40 39.32 23.92 51.77
NO YRS 61 63 63 67 68 68 68 69 69 70 69 64 57