UPPER MARLBORO 3 NNW, MARYLAND

Monthly Average Temperature (Degrees Fahrenheit)

(189070)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201203
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
1956 ----- z ----- z ----- z ----- z 60.63 71.52 a 74.69 72.97 65.48 57.32 a 45.90 42.97 a 61.43
1957 30.69 38.07 42.55 56.77 64.79 73.67 75.15 72.33 a 69.53 52.50 47.40 39.82 55.27
1958 31.90 29.12 39.98 c 54.27 62.05 a 68.45 a 76.92 72.52 65.63 d 55.60 48.17 c 28.50 b 52.76
1959 30.22 a 34.56 b 42.15 d 56.10 66.65 a 72.02 75.73 76.02 c 68.35 58.92 44.72 37.90 55.28
1960 35.63 36.14 32.71 58.38 60.02 70.15 72.76 75.27 67.63 55.58 45.67 26.82 53.06
1961 26.15 35.43 44.48 48.75 59.77 69.88 75.39 73.42 71.97 56.06 48.72 33.52 53.63
1962 32.73 31.46 41.60 54.52 65.71 70.80 71.71 72.81 64.38 a 56.76 42.33 30.97 52.98
1963 29.70 a 27.82 47.26 54.52 61.21 69.95 74.35 71.52 63.10 57.11 48.07 30.55 52.93
1964 34.56 33.98 45.74 52.28 64.18 71.17 75.03 71.27 66.22 51.48 48.12 38.37 54.37
1965 32.27 34.02 40.61 50.07 66.92 70.07 74.77 72.48 68.45 a 52.23 46.18 38.39 53.87
1966 30.40 34.14 44.63 49.38 60.97 70.95 76.15 73.74 64.18 52.31 45.98 34.71 53.13
1967 37.95 29.96 41.15 53.92 56.97 70.42 73.76 72.21 63.45 54.10 42.52 37.66 52.84
1968 28.42 31.26 46.00 55.08 61.74 70.98 75.47 74.98 67.72 58.77 48.45 34.92 54.48
1969 31.37 34.36 40.03 55.73 63.60 73.27 76.68 73.55 66.98 55.08 45.33 34.08 54.17
1970 27.16 35.12 38.82 51.85 65.58 71.55 75.65 74.87 71.33 59.35 47.17 37.00 54.62
1971 29.08 36.30 40.90 51.38 60.23 72.55 74.50 72.82 69.55 61.87 45.50 43.37 54.84
1972 36.47 32.66 42.84 51.08 62.13 67.58 75.53 72.71 67.92 52.50 43.45 40.89 53.81
1973 35.13 33.62 48.08 53.95 60.37 74.23 75.66 75.97 69.43 57.56 48.05 37.98 55.84
1974 38.32 33.21 44.74 55.32 62.55 67.90 74.76 74.08 65.42 51.82 46.52 38.00 54.39
1975 35.69 36.45 41.53 49.18 65.44 72.07 74.32 75.60 64.10 58.56 48.70 35.89 54.79
1976 28.61 41.12 46.84 54.65 59.27 71.57 72.39 71.97 65.52 50.81 40.13 30.76 52.80
1977 21.73 34.88 48.85 56.38 64.69 69.17 76.98 75.89 70.23 53.98 47.93 33.84 54.55
1978 28.26 26.12 40.08 52.82 61.32 71.38 73.81 77.23 68.35 53.48 47.25 38.23 53.19
1979 31.71 23.00 45.76 52.67 63.71 67.55 74.06 74.26 67.23 54.24 50.03 38.72 a 53.58
1980 33.21 30.88 40.58 55.28 64.31 69.25 77.13 77.21 71.18 54.40 43.58 34.74 54.31
1981 27.18 37.64 41.08 57.48 60.87 72.93 ----- z 69.34 65.97 52.13 46.00 33.87 51.32
1982 26.05 36.12 42.77 51.88 65.56 69.68 75.56 71.15 65.10 54.77 49.33 43.19 54.27
1983 34.81 35.00 45.69 51.27 61.63 71.92 76.15 75.53 66.48 56.21 46.62 33.77 54.59
1984 28.15 40.79 38.79 52.05 62.85 72.95 73.27 74.47 64.30 62.19 43.75 43.37 54.74
1985 28.47 35.75 45.40 57.32 64.56 69.58 75.32 73.35 67.47 57.73 51.57 32.92 54.95
1986 31.90 a 32.52 43.24 53.55 64.45 72.42 77.26 70.82 65.82 56.50 43.97 37.23 54.14
1987 31.40 34.00 45.73 52.45 64.00 74.15 80.00 75.24 69.22 50.10 48.18 38.98 55.29
1988 26.26 35.41 44.27 51.18 62.76 71.35 78.50 77.66 64.63 49.98 45.32 34.90 53.52
1989 35.73 34.86 ----- z 50.45 60.47 73.58 74.81 72.90 67.17 55.95 ----- z ----- z 58.43
1990 39.27 40.88 46.60 52.00 60.00 70.20 74.95 71.50 63.93 57.73 47.23 39.11 55.28
1991 33.56 39.95 46.03 55.45 69.56 72.17 78.02 75.53 67.53 55.69 46.40 40.03 56.66
1992 36.19 38.83 42.26 ----- z 59.40 ----- z 76.03 ----- z 66.68 53.18 46.98 37.16 50.75
1993 37.44 ----- z 39.58 52.70 64.82 ----- z ----- z 76.27 69.17 ----- z ----- z ----- z 56.66
1994 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1995 ----- z ----- z ----- z ----- z ----- z 71.95 78.45 76.90 67.75 59.05 41.90 33.11 61.30
1996 30.81 34.07 38.87 54.15 60.73 73.53 74.37 73.34 68.12 55.68 41.18 39.95 53.73
1997 33.44 40.68 45.74 50.75 58.39 69.12 76.05 73.44 66.52 56.27 44.22 38.65 54.44
1998 41.23 41.04 45.00 55.53 65.84 71.47 76.27 75.50 72.17 57.35 46.72 42.97 57.59
1999 36.71 37.21 41.68 53.85 ----- z 71.65 79.26 76.37 67.68 53.98 51.57 39.31 55.39
2000 33.55 38.95 48.71 53.63 65.89 73.03 72.13 72.95 65.53 57.56 44.47 29.59 c 54.67
2001 32.57 c 38.43 41.58 54.32 63.21 72.57 72.39 76.15 65.48 56.26 50.23 42.92 55.51
2002 39.18 39.77 44.98 57.42 62.65 74.18 78.63 78.76 69.87 56.69 44.68 34.81 56.80
2003 29.52 31.20 44.05 52.23 59.92 70.22 76.58 77.18 68.62 54.42 51.28 36.84 54.34
2004 28.82 34.72 45.40 55.15 70.63 71.18 76.31 74.42 69.50 55.61 49.12 37.53 55.70
2005 33.77 37.04 40.31 54.68 59.58 73.60 78.65 77.68 71.85 58.02 48.40 34.34 55.66
2006 41.02 36.39 44.55 57.22 62.74 ----- z 78.66 77.95 65.98 55.08 49.25 42.98 55.62
2007 39.61 28.64 45.40 51.87 65.85 73.98 76.73 77.60 70.37 63.58 46.73 38.03 56.53
2008 35.98 37.74 44.74 55.78 61.05 75.48 76.98 73.48 69.52 55.37 45.02 38.50 55.80
2009 29.37 37.95 42.69 55.37 64.19 72.33 74.58 77.39 66.97 55.21 49.23 35.40 55.06
2010 32.98 31.38 47.55 58.28 66.71 78.00 79.76 77.19 70.97 58.39 46.27 32.10 56.63
2011 30.60 37.71 44.42 57.62 66.85 75.55 80.48 76.06 70.18 56.27 49.92 41.55 57.27
2012 37.68 41.10 52.82 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 43.87
Period of Record Statistics
MEAN 32.60 35.08 43.54 53.85 63.02 71.67 75.84 74.52 67.53 55.73 46.63 36.82 54.65
S.D. 4.28 3.99 3.33 2.46 2.84 2.10 2.05 2.19 2.36 2.88 2.61 4.02 1.22
SKEW 0.01 -0.65 -0.25 -0.09 0.34 0.33 0.22 -0.09 0.14 0.28 -0.28 -0.29 0.44
MAX 41.23 41.12 52.82 58.38 70.63 78.00 80.48 78.76 72.17 63.58 51.57 43.37 57.59
MIN 21.73 23.00 32.71 48.75 56.97 67.55 71.71 69.34 63.10 49.98 40.13 26.82 52.76
NO YRS 54 53 53 52 53 52 53 54 55 54 53 53 47