BELTSVILLE, MARYLAND

Monthly Average Minimum 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 47.35 57.97 65.00 58.81 53.62 a 47.19 29.37 ----- z 51.33
1942 ----- z ----- z ----- z 39.00 52.23 a 60.60 63.61 61.39 54.93 44.81 33.93 ----- z 51.31
1943 ----- z ----- z ----- z 34.73 53.00 65.23 63.68 62.03 51.63 41.65 30.57 39.23 a 49.08
1944 ----- z ----- z ----- z ----- z 54.74 59.83 62.19 60.71 57.70 40.90 33.50 ----- z 52.80
1945 ----- z ----- z ----- z 43.07 46.94 58.33 64.29 59.81 60.30 39.90 34.33 ----- z 50.87
1946 ----- z ----- z ----- z 38.67 50.61 57.10 61.16 57.94 54.23 44.65 35.87 ----- z 50.03
1947 ----- z ----- z ----- z 38.60 50.19 57.47 61.26 63.77 56.77 47.00 32.13 20.90 47.57
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 61.61 54.13 42.23 36.60 25.55 44.02
1949 29.87 29.11 32.23 37.70 50.32 59.73 68.19 63.87 51.90 48.93 a 30.17 26.65 44.06
1950 31.48 26.54 26.48 36.50 49.84 57.13 61.74 60.55 54.60 45.10 31.33 21.97 41.94
1951 23.68 23.89 30.32 39.07 48.45 59.10 63.52 60.03 53.90 46.06 28.17 24.97 41.76
1952 27.19 27.03 30.13 42.53 49.13 60.50 65.29 62.61 52.79 a 37.42 33.93 26.65 42.93
1953 28.10 27.07 32.77 41.97 a 55.74 59.13 62.52 60.32 52.86 a 41.42 30.50 25.74 43.18
1954 20.55 26.18 29.65 43.47 47.32 57.23 60.19 61.33 a 55.10 45.65 30.93 23.29 41.74
1955 21.26 19.21 32.03 42.57 50.68 54.63 67.84 66.45 56.52 a 42.52 29.30 19.58 41.88
1956 20.61 25.90 28.74 37.73 45.55 57.47 63.10 60.45 52.83 44.10 33.10 31.84 41.78
1957 18.77 28.79 31.13 42.80 49.42 61.27 60.65 59.55 58.07 39.52 34.40 27.35 42.64
1958 21.35 18.00 a 30.55 41.83 49.29 56.00 66.71 62.03 52.77 42.94 34.00 17.55 41.08
1959 18.84 21.50 28.61 42.73 52.80 a 59.67 65.35 65.39 55.85 c 48.03 32.93 27.57 a 43.27
1960 25.84 26.48 22.30 a 42.60 48.23 57.90 61.77 64.90 57.28 a 42.74 32.45 a 13.45 41.33
1961 14.45 24.61 33.13 37.93 47.48 58.73 64.19 63.26 60.53 42.13 37.40 23.29 42.26
1962 20.87 21.79 30.29 41.57 52.13 60.07 60.70 a 60.58 51.23 43.35 31.60 20.67 a 41.24
1963 16.57 a 15.04 31.45 39.83 47.39 57.87 61.71 59.58 51.33 40.39 36.00 19.39 39.71
1964 19.16 22.10 32.00 40.73 50.39 58.30 64.61 60.06 52.66 a 37.68 32.14 a 27.77 41.47
1965 19.20 a 21.93 29.19 38.67 52.38 b 57.47 62.61 61.61 57.87 38.00 31.87 25.90 41.39
1966 20.37 a 22.70 a 30.77 39.50 48.65 58.07 64.58 62.03 54.83 39.70 a 34.07 a 25.86 b 41.76
1967 26.03 16.93 a 30.55 39.83 44.65 56.00 a 63.43 a 63.06 51.47 40.26 31.72 e 27.23 a 40.93
1968 16.29 g 21.10 33.63 d 39.97 a 46.81 58.23 64.48 63.87 54.04 b 46.67 a 37.41 a 24.13 44.58
1969 20.81 25.43 28.55 41.30 49.87 60.71 b 65.81 63.06 54.67 40.13 32.20 24.81 42.28
1970 15.10 22.82 28.71 39.90 52.06 59.20 64.84 62.81 57.20 47.68 37.20 26.87 42.87
1971 18.84 25.32 28.93 a 35.93 47.61 60.63 62.26 62.00 59.63 51.29 34.40 32.45 43.28
1972 24.77 a 22.38 31.00 38.27 50.84 56.53 64.58 61.23 56.73 40.10 32.17 33.10 42.64
1973 23.35 23.00 38.93 a 43.40 49.48 b 64.43 65.13 65.16 57.34 a 43.68 34.61 b 28.71 g 46.23
1974 28.23 22.62 d 31.71 40.30 50.74 58.18 b 62.31 b 64.71 c 55.40 37.69 b 34.13 27.17 a 42.77
1975 25.23 27.81 b 31.13 38.70 c 52.79 c 61.17 64.53 a 64.84 55.20 46.87 37.18 b 26.58 44.34
1976 20.63 a 28.38 35.06 41.53 48.87 63.13 63.17 a 59.97 52.24 a 39.45 27.17 19.58 41.60
1977 11.70 a 21.67 a 35.68 41.41 a 51.19 57.14 b 64.13 a 64.41 d 57.77 41.48 40.23 23.53 a 42.53
1978 19.76 b 15.67 a 30.10 39.93 a 50.20 a 58.75 b 62.10 66.35 57.14 a 38.00 b 36.50 25.55 41.67
1979 22.77 12.73 b 33.50 a 41.69 a 51.72 b 56.97 64.48 b 63.71 56.79 a 42.84 38.38 a 29.00 42.88
1980 24.97 21.14 30.33 a 42.70 51.74 55.48 c 65.58 65.43 a 58.33 41.87 a 32.71 b 24.03 42.86
1981 16.04 e 25.88 b 30.07 c 42.41 c 49.38 b 62.85 c 64.97 b 60.71 55.54 b 39.84 35.29 b 25.36 c 42.36
1982 13.55 25.82 31.45 37.53 52.23 59.50 65.39 60.16 54.70 43.94 36.67 32.23 42.76
1983 25.90 25.43 35.77 40.57 49.74 60.03 64.71 65.39 54.67 44.35 34.63 23.94 43.76
1984 17.39 30.34 27.39 41.13 49.97 61.17 64.26 65.03 53.03 52.03 32.37 32.97 43.92
1985 19.39 26.14 32.97 43.33 53.06 58.73 64.13 62.29 55.03 47.26 42.93 23.97 44.10
1986 22.35 26.18 32.48 41.93 52.19 60.60 66.90 61.87 58.07 46.19 33.17 28.10 44.17
1987 22.71 24.93 34.10 41.30 51.52 62.03 67.94 63.97 58.10 36.71 35.87 30.35 44.13
1988 15.16 26.07 32.68 40.10 52.00 58.80 66.58 66.65 53.77 38.48 34.53 25.39 42.52
1989 27.29 26.79 33.26 40.03 a 50.84 63.83 66.03 64.81 58.30 45.23 34.47 15.48 43.86
1990 29.61 29.18 36.65 42.00 50.84 59.77 66.42 63.84 54.90 46.16 35.53 30.03 45.41
1991 24.00 29.04 34.87 43.10 57.03 60.70 68.00 65.03 56.53 44.26 34.87 29.94 45.61
1992 25.55 27.90 31.87 40.93 47.74 57.90 66.23 60.48 56.70 40.39 38.03 29.77 43.62
1993 28.97 22.82 29.97 40.60 53.23 60.13 67.65 65.00 58.27 43.13 34.13 26.00 44.16
1994 18.19 24.43 32.23 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 24.95
1995 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.48 33.57 26.58 35.54
1996 21.74 25.17 29.77 42.90 51.61 63.77 65.35 63.84 58.80 45.19 32.20 32.48 44.40
1997 24.65 31.54 36.19 40.47 47.42 59.60 66.26 63.00 56.40 45.03 37.47 30.35 44.86
1998 32.39 33.25 35.97 44.70 56.35 62.37 65.71 64.84 61.77 47.29 34.57 32.45 47.64
1999 25.97 27.68 31.90 41.97 51.71 61.30 68.29 65.81 59.23 42.74 40.63 30.71 45.66
2000 23.65 28.90 37.81 43.53 54.48 63.53 63.87 64.87 56.90 44.39 34.20 21.61 44.81
2001 23.19 28.07 32.35 42.40 51.97 62.73 62.35 66.87 55.53 43.13 37.90 32.42 44.91
2002 28.19 28.54 34.52 45.53 51.42 62.83 68.00 68.19 59.30 48.23 35.90 26.10 46.40
2003 21.03 22.39 33.55 41.93 52.48 61.90 67.42 68.52 59.97 43.19 41.03 28.00 45.12
2004 19.94 25.38 35.97 44.93 60.29 61.67 67.29 65.81 60.53 45.74 39.63 27.68 46.24
2005 26.16 27.43 32.10 43.27 48.84 63.57 68.68 68.84 59.33 49.65 36.83 25.26 45.83
2006 30.32 26.54 34.48 44.97 50.74 62.37 68.84 67.71 57.03 44.81 39.93 32.03 46.65
2007 30.23 20.57 33.26 41.50 53.26 62.87 65.29 67.39 58.87 51.65 37.30 30.16 46.03
2008 26.35 27.48 34.19 45.33 50.19 63.97 66.97 62.42 60.40 43.74 36.50 29.16 45.56
2009 20.87 27.11 33.71 43.93 54.90 62.90 64.84 68.06 59.17 46.84 41.03 26.32 45.81
2010 24.48 23.64 39.48 45.87 56.74 67.37 69.06 67.87 59.27 48.06 36.07 25.26 46.93
2011 22.68 27.57 34.52 48.10 56.97 65.07 69.58 66.77 62.67 47.32 38.60 31.87 47.64
2012 27.71 30.90 42.00 42.70 50.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.83
Period of Record Statistics
MEAN 22.84 24.89 32.34 41.31 51.00 60.11 64.86 63.44 56.27 43.76 34.75 26.58 43.58
S.D. 4.68 3.99 3.22 2.49 2.91 2.66 2.29 2.67 2.75 3.60 3.21 4.59 1.85
SKEW -0.12 -0.78 0.19 -0.10 0.57 0.34 0.03 0.13 0.04 0.09 0.17 -0.30 0.35
MAX 32.39 33.25 42.00 48.10 60.29 67.37 69.58 68.84 62.67 52.03 42.93 39.23 47.64
MIN 11.70 12.73 22.30 34.73 44.65 54.63 60.19 57.94 51.23 36.71 27.17 13.45 39.71
NO YRS 62 63 63 67 68 68 68 69 69 70 70 64 59