DALECARLIA RESVR DC, MARYLAND

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(182325)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 86.26 81.03 a 65.40 a 61.44 c 49.68 f 73.53
1949 53.10 b 56.86 f 57.67 a 66.62 d 79.04 f 85.21 a 90.69 b 86.45 b 78.04 d 73.17 a 60.08 d 49.61 c 70.06
1950 59.50 c 46.88 c 53.21 g 66.45 a 74.35 83.59 a 84.06 83.39 74.33 70.24 b 59.31 a 41.93 b 67.64
1951 48.77 48.85 a 55.94 66.00 77.41 b 84.03 88.57 a 87.89 d 80.69 a 70.71 53.90 49.80 a 67.71
1952 49.50 a 49.41 54.00 66.97 a 75.42 88.48 a 90.57 a 85.97 a 79.90 68.13 58.90 45.39 67.72
1953 49.58 52.64 57.58 66.43 80.53 a 84.62 a 90.23 87.13 79.97 71.30 a 59.38 a 51.26 69.22
1954 46.16 55.18 54.87 71.50 72.53 a 84.90 89.48 84.03 82.93 70.68 52.03 44.13 67.37
1955 41.84 47.39 58.06 70.53 79.48 79.87 91.93 a 87.80 a 78.27 69.48 55.10 40.81 66.71
1956 40.68 49.17 53.94 65.13 77.07 d 84.67 85.53 a 84.81 76.77 68.00 56.13 53.35 66.27
1957 40.61 49.14 54.87 72.27 79.97 87.17 90.20 a 87.58 80.63 63.90 57.40 48.52 67.69
1958 40.48 38.89 a 48.52 67.13 75.48 81.07 a 87.77 85.35 79.17 68.74 59.70 40.45 64.40
1959 44.32 49.32 58.13 71.47 80.29 85.00 86.97 88.52 82.00 70.71 55.37 48.81 68.41
1960 44.71 45.48 43.71 73.50 74.65 83.87 86.23 87.13 78.40 67.81 60.80 40.87 65.60
1961 37.86 b 48.57 58.29 62.00 71.63 a 83.32 b 86.87 84.74 83.37 70.13 58.37 43.74 65.74
1962 43.87 42.82 53.29 67.33 81.90 j 83.20 84.61 85.45 73.83 70.07 a 52.90 41.45 63.53
1963 40.94 40.32 61.03 68.77 76.03 84.23 87.54 e 85.35 76.30 73.10 59.73 38.61 66.00
1964 46.06 44.21 58.26 ----- z 78.90 87.17 a 88.19 84.97 81.17 66.84 ----- z 48.76 b 68.45
1965 43.39 48.71 53.45 64.04 g 82.87 83.83 87.65 86.23 82.13 67.77 58.43 50.35 67.71
1966 40.17 a 45.11 60.10 62.47 77.23 86.97 90.90 88.29 73.69 q 69.13 59.27 45.55 65.92
1967 50.19 45.18 55.06 70.86 a 71.97 85.60 85.94 84.68 78.03 68.81 53.93 47.74 66.50
1968 41.06 44.21 63.00 69.97 73.11 d 83.43 w 88.10 k 88.81 81.73 70.03 59.30 45.81 63.70
1969 41.61 43.50 53.48 71.63 79.13 86.07 87.00 85.81 80.43 70.32 ----- z 42.26 67.39
1970 38.90 47.75 51.55 67.97 81.29 85.50 87.97 87.71 85.13 71.16 56.77 47.84 67.46
1971 40.48 49.29 54.52 70.03 75.32 87.00 87.32 85.81 81.60 73.48 57.70 56.48 68.25
1972 47.81 45.83 56.29 68.43 76.61 81.47 87.32 85.65 81.40 66.16 55.10 51.23 66.94
1973 48.68 47.57 61.13 66.53 73.87 h 85.00 s 88.87 88.39 82.97 73.45 61.30 47.97 66.69
1974 50.52 49.07 59.55 72.03 76.61 81.17 87.94 86.23 79.83 69.58 60.20 50.71 68.62
1975 49.71 48.18 54.03 62.03 79.23 84.10 86.71 88.68 75.10 73.87 63.73 47.29 67.72
1976 40.35 59.07 63.68 72.23 75.29 86.17 86.84 85.23 80.00 a 63.77 53.40 43.32 67.45
1977 32.97 49.96 63.52 72.55 a 80.94 82.33 90.73 a 87.71 83.10 67.81 57.10 45.26 67.83
1978 38.48 36.43 53.81 69.20 74.87 84.40 86.55 88.16 79.93 67.94 59.63 52.06 65.96
1979 41.77 35.11 61.97 65.27 77.68 82.13 85.26 86.06 78.87 67.23 61.80 50.29 66.12
1980 41.94 42.45 55.26 68.50 79.55 83.97 90.97 90.48 85.43 68.90 54.83 47.06 67.45
1981 39.48 52.39 55.19 73.13 75.90 86.10 87.23 85.26 78.53 66.90 a 57.50 43.55 66.76
1982 37.52 47.11 56.23 66.37 79.65 80.87 88.16 83.94 79.23 69.45 61.30 54.10 66.99
1983 44.32 47.57 57.84 63.70 75.45 85.90 90.42 90.61 82.67 69.58 60.20 41.52 67.48
1984 39.97 52.38 49.94 64.47 76.23 86.43 85.39 86.87 79.27 74.00 ----- z 57.19 68.38
1985 40.19 48.32 59.74 74.73 79.52 83.23 89.16 86.68 83.43 71.55 62.87 45.65 68.76
1986 45.42 43.00 59.90 68.70 80.84 89.00 91.61 85.16 80.37 71.90 55.43 47.58 68.24
1987 42.65 46.46 61.16 66.07 81.13 88.17 92.84 89.77 81.80 67.10 61.67 49.26 69.01
1988 40.87 47.62 59.42 66.97 77.10 86.80 93.13 90.65 79.70 64.74 58.70 48.58 67.86
1989 47.90 48.21 56.58 67.07 74.94 85.63 87.52 85.45 80.30 71.71 57.53 36.26 66.59
1990 53.58 57.57 63.00 68.93 75.26 87.10 89.65 85.55 79.57 72.97 63.17 54.29 70.89
1991 46.84 54.89 58.77 71.27 83.97 87.93 91.61 89.68 81.63 71.74 58.13 51.77 70.69
1992 46.77 51.17 55.65 67.87 74.68 82.33 88.81 84.16 79.30 68.03 57.33 46.87 66.91
1993 48.06 44.93 52.29 68.13 79.74 86.47 92.39 89.45 81.30 68.87 58.87 44.90 67.95
1994 36.71 46.96 56.23 76.23 75.35 89.63 90.10 85.81 80.40 70.13 64.10 52.84 68.71
1995 46.94 44.57 60.55 71.60 77.35 ----- z 90.74 91.26 81.10 73.32 53.80 43.35 66.78
1996 41.19 46.03 53.65 70.43 74.61 87.07 86.74 86.29 79.17 70.42 51.73 49.31 b 66.39
1997 45.65 54.32 59.06 66.50 76.77 84.23 89.90 85.45 79.97 69.35 53.30 48.77 67.77
1998 51.13 51.39 58.23 71.60 79.19 84.20 90.68 91.55 87.73 70.94 60.90 53.26 70.90
1999 48.71 50.75 55.48 70.93 79.32 85.63 94.94 90.97 80.23 68.81 65.17 50.94 70.16
2000 46.00 54.83 64.29 67.23 81.19 87.00 ----- z 85.39 79.70 72.77 56.27 39.74 66.76
2001 43.23 51.79 53.94 71.67 78.13 86.20 85.84 88.71 80.37 72.61 67.03 55.10 69.55
2002 51.77 56.46 60.90 72.47 79.29 88.73 92.58 91.81 83.17 67.48 55.53 44.84 70.42
2003 38.42 40.57 60.39 68.60 ----- z ----- z 88.13 88.26 80.17 68.06 62.70 47.23 64.25
2004 39.48 46.38 60.42 ----- z 84.39 85.40 88.29 85.90 a 80.97 68.00 61.50 49.48 68.20
2005 44.65 50.14 49.77 68.13 71.65 86.13 89.90 89.06 85.93 69.23 61.40 44.45 67.54
2006 52.48 48.21 57.26 71.60 75.71 85.07 91.19 91.29 76.77 67.16 59.53 55.35 69.30
2007 48.68 38.36 58.48 62.07 79.26 86.50 89.74 90.71 84.37 76.81 57.70 48.06 68.39
2008 46.35 48.10 57.81 67.73 73.81 88.83 89.45 85.03 79.80 67.13 53.83 47.39 67.11
2009 37.77 47.54 52.84 67.23 72.39 80.37 86.52 88.00 78.27 64.61 58.70 43.06 64.77
2010 41.32 38.54 56.90 71.30 77.87 88.67 92.48 87.45 83.77 68.48 55.90 38.03 66.73
2011 37.71 46.43 56.39 71.47 77.58 85.63 91.97 87.32 77.40 64.00 60.80 50.67 a 67.28
2012 47.42 51.00 65.52 67.50 76.40 u ----- z ----- z ----- z ----- z ----- z ----- z ----- z 57.86
Period of Record Statistics
MEAN 44.30 47.61 57.02 68.75 77.35 85.19 88.93 87.19 80.46 69.46 58.45 47.34 67.68
S.D. 5.03 4.87 4.05 3.18 3.00 2.30 2.38 2.16 2.62 2.72 3.37 4.73 1.48
SKEW 0.40 -0.22 -0.44 -0.15 0.10 -0.31 0.14 0.55 0.06 0.06 0.07 -0.12 0.34
MAX 59.50 59.07 65.52 76.23 84.39 89.63 94.94 91.81 87.73 76.81 67.03 57.19 70.90
MIN 32.97 35.11 43.71 62.00 71.63 79.87 84.06 83.39 73.83 63.77 51.73 36.26 64.40
NO YRS 64 63 63 61 59 59 61 64 63 64 61 63 49