BELTSVILLE, MARYLAND

Monthly Average Maximum 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 78.68 81.40 84.71 84.45 82.69 a 74.13 61.20 ----- z 78.18
1942 ----- z ----- z ----- z 67.83 78.06 83.23 86.55 81.90 78.97 67.35 56.87 ----- z 75.10
1943 ----- z ----- z ----- z 61.00 75.61 86.53 87.32 90.10 77.30 65.55 55.27 62.67 a 73.48
1944 ----- z ----- z ----- z ----- z 80.94 83.93 89.81 86.13 78.30 65.74 55.20 ----- z 77.15
1945 ----- z ----- z ----- z 68.30 71.39 82.63 84.00 84.48 80.93 68.13 57.60 ----- z 74.68
1946 ----- z ----- z ----- z 65.23 73.65 81.00 85.58 80.71 80.20 70.45 58.43 ----- z 74.41
1947 ----- z ----- z ----- z 65.93 74.16 79.83 83.71 86.68 76.93 73.52 51.70 42.52 70.55
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 84.16 77.87 63.97 60.23 46.68 66.58
1949 49.19 49.82 54.03 62.10 74.84 82.67 88.00 85.00 75.67 70.61 56.50 48.81 66.44
1950 54.32 43.46 49.00 60.57 70.81 81.53 83.19 83.39 73.00 68.35 57.37 40.90 63.82
1951 47.61 45.36 52.63 a 63.87 73.87 80.93 86.65 85.16 79.90 69.97 52.73 48.00 65.56
1952 46.48 45.97 49.13 65.17 72.35 85.10 88.87 84.87 78.76 a 66.10 57.00 45.71 65.46
1953 47.19 49.71 54.32 64.57 77.65 82.07 89.74 85.65 80.52 a 71.39 58.23 48.45 67.46
1954 43.10 51.64 53.55 68.23 70.65 83.13 88.48 83.07 a 82.80 72.90 53.30 44.61 66.29
1955 41.90 44.32 56.84 67.43 77.19 77.53 90.74 87.35 76.97 a 70.35 54.53 40.74 65.49
1956 40.65 48.69 50.42 62.27 73.26 83.03 84.39 83.45 76.67 67.71 55.77 51.77 64.84
1957 39.03 47.50 51.77 66.77 75.65 84.03 89.19 84.94 79.17 63.13 56.90 47.90 65.50
1958 40.77 36.41 a 47.55 64.33 72.26 78.43 86.10 82.32 78.87 67.03 58.37 38.61 62.59
1959 41.87 45.96 54.81 66.53 77.30 a 83.90 85.68 86.81 81.00 c 69.74 54.73 48.47 a 66.40
1960 43.32 44.48 40.68 71.03 71.00 81.97 84.87 85.39 78.21 a 67.16 58.97 a 39.06 63.84
1961 36.77 44.75 54.81 59.20 69.55 81.83 86.94 84.16 84.13 69.29 57.50 42.29 64.27
1962 41.77 39.21 50.94 64.47 77.00 82.23 83.23 a 86.48 76.47 69.45 51.50 41.63 a 63.70
1963 37.74 36.29 57.00 66.27 73.23 81.67 87.48 83.61 73.90 72.71 58.20 37.42 63.79
1964 44.48 41.69 56.06 61.60 76.13 84.03 87.90 83.35 79.21 a 63.97 61.10 a 46.71 65.52
1965 41.07 a 44.21 49.10 59.67 79.21 b 81.83 86.29 85.45 80.53 65.65 57.23 48.77 64.92
1966 38.60 a 41.39 56.10 58.43 72.23 83.13 89.68 86.94 75.70 65.23 a 57.72 a 43.55 b 64.06
1967 47.26 40.29 50.45 65.60 67.52 83.86 a 83.97 a 82.35 77.17 66.39 52.12 e 46.23 a 63.60
1968 36.81 e 40.59 55.07 d 66.07 a 70.13 81.27 86.42 87.61 79.96 b 68.67 a 56.86 a 42.87 64.36
1969 38.55 41.11 49.74 67.20 75.55 83.86 b 85.84 83.45 78.17 67.39 54.00 40.81 63.80
1970 35.32 44.54 47.29 61.97 76.52 81.77 85.45 86.06 83.30 69.32 55.13 45.35 64.34
1971 37.48 44.57 50.65 63.80 70.26 82.60 85.16 83.42 78.20 70.19 54.67 51.10 a 64.34
1972 44.57 a 41.24 52.58 62.90 72.55 77.10 85.03 84.58 78.70 64.10 53.60 48.45 63.78
1973 45.97 44.04 57.81 62.77 70.90 b 83.90 87.19 86.48 80.45 a 70.61 58.20 46.74 66.25
1974 46.87 43.74 a 56.35 66.83 73.00 78.68 b 86.07 a 84.89 c 77.07 67.21 b 58.83 48.53 a 65.67
1975 46.16 45.00 50.68 59.70 75.87 81.73 84.77 a 87.74 73.67 70.84 61.93 b 44.71 65.23
1976 37.87 a 52.72 59.90 b 69.23 71.61 83.97 85.48 84.58 79.31 a 61.97 51.47 40.07 a 64.85
1977 31.84 46.36 60.97 70.45 a 77.90 81.10 90.03 a 88.07 b 81.47 66.06 55.90 43.61 66.15
1978 38.00 b 35.43 49.06 65.41 a 72.13 a 83.52 a 84.23 86.90 80.93 a 67.50 a 57.80 49.16 64.17
1979 39.50 g 32.00 b 57.30 a 61.28 a 74.07 b 78.23 82.71 82.87 77.24 a 64.53 a 61.25 b 47.81 65.39
1980 40.45 40.34 49.39 65.40 74.81 81.59 c 88.00 87.57 a 83.73 66.10 a 53.25 b 44.30 a 64.58
1981 36.81 e 47.92 b 52.31 b 67.44 c 71.72 b 82.78 c 86.28 b 83.29 75.39 b 64.03 56.18 b 41.18 c 63.78
1982 34.55 44.00 52.00 62.67 76.84 79.37 86.55 82.97 78.97 67.26 59.83 51.29 64.69
1983 42.65 44.68 54.35 59.87 72.77 82.87 88.97 88.13 80.93 66.48 56.97 40.87 64.96
1984 36.81 48.93 46.23 60.57 72.97 84.03 83.48 85.48 76.73 71.26 55.47 53.74 64.64
1985 37.00 44.93 55.81 70.40 75.77 80.63 86.71 84.35 82.10 69.06 60.03 43.10 65.83
1986 42.52 39.89 55.61 64.87 77.45 86.37 89.68 83.13 78.10 70.10 53.57 46.19 65.62
1987 40.71 43.29 56.97 62.23 75.06 85.77 91.71 87.74 78.97 64.10 59.20 47.29 66.09
1988 37.16 45.21 56.42 62.43 74.10 84.47 91.52 88.26 77.20 63.13 56.80 45.61 65.19
1989 46.65 42.78 a 53.55 62.53 71.26 83.87 86.03 83.03 78.57 69.26 56.60 32.35 63.87
1990 50.42 52.71 58.16 65.40 71.74 84.23 88.16 83.32 77.63 72.03 62.10 51.94 68.15
1991 43.97 51.07 56.32 66.13 81.52 85.20 89.61 87.71 80.00 69.61 56.33 49.45 68.08
1992 44.71 47.79 51.29 63.43 71.03 80.83 86.52 82.26 77.23 65.58 55.60 43.68 64.16
1993 45.81 41.71 47.74 63.10 77.10 83.80 91.10 88.70 a 78.83 66.19 56.77 43.77 65.39
1994 34.58 42.61 51.16 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 42.78
1995 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 71.29 51.83 41.00 54.71
1996 40.94 43.38 49.23 64.93 71.35 84.63 83.90 84.71 77.60 67.10 50.73 47.90 63.87
1997 42.81 49.75 55.94 62.93 72.29 81.70 88.03 86.19 79.37 68.61 53.80 47.87 65.77
1998 48.90 49.14 54.35 67.97 76.58 81.63 87.87 88.71 85.43 68.81 59.10 52.23 68.39
1999 46.39 47.46 50.81 66.17 76.65 83.20 91.06 87.94 78.23 66.13 62.27 49.23 a 67.13
2000 41.77 48.86 59.42 62.90 75.55 82.97 81.94 82.81 76.17 70.00 54.90 38.87 64.68
2001 41.06 47.89 50.19 66.07 75.45 82.60 83.06 86.29 77.20 68.81 63.00 52.68 66.19
2002 48.48 51.11 55.26 67.90 73.06 84.53 87.97 88.52 79.93 64.55 53.30 42.74 66.45
2003 36.39 38.21 55.06 62.40 67.68 78.23 84.97 85.61 77.40 65.16 61.73 45.29 63.18
2004 36.35 43.62 56.06 63.73 79.48 80.17 84.48 83.13 78.50 65.42 58.83 46.97 64.73
2005 41.52 47.32 48.74 66.07 69.94 84.00 87.06 86.58 83.83 66.58 59.87 42.65 65.35
2006 51.03 45.64 54.84 69.33 73.45 82.67 88.10 88.77 75.13 65.71 58.77 54.06 67.29
2007 47.42 36.39 56.71 60.67 77.29 84.10 87.52 88.19 82.70 75.00 55.73 45.68 66.45
2008 44.65 47.14 55.06 65.93 71.94 86.17 86.87 83.35 79.40 67.32 53.87 46.97 65.72
2009 37.45 47.79 52.45 65.87 73.13 81.40 83.84 86.52 76.10 65.16 58.57 43.35 64.30
2010 41.19 38.04 57.48 69.77 76.39 88.17 90.26 86.00 82.13 68.84 57.20 39.35 66.23
2011 37.74 47.50 54.16 66.50 76.10 85.60 90.74 85.97 77.90 65.68 61.53 50.77 66.68
2012 46.74 50.79 63.42 65.33 64.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 56.57
Period of Record Statistics
MEAN 42.07 44.61 53.38 64.70 74.19 82.60 86.82 85.37 78.87 67.84 56.85 45.74 65.23
S.D. 4.76 4.49 3.97 2.97 3.03 2.20 2.42 2.09 2.55 2.84 2.98 4.83 1.28
SKEW 0.21 -0.45 -0.30 0.01 0.13 -0.28 0.14 0.08 0.28 0.31 0.00 0.34 0.52
MAX 54.32 52.72 63.42 71.03 81.52 88.17 91.71 90.10 85.43 75.00 63.00 62.67 68.39
MIN 31.84 32.00 40.68 58.43 67.52 77.10 81.94 80.71 73.00 61.97 50.73 32.35 62.59
NO YRS 62 63 63 67 68 68 68 69 69 70 70 65 60