MC NARY DAM, WASHINGTON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(455231)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200810
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
1954 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 62.64 f 55.43 42.10 48.77
1955 41.13 46.89 50.32 60.13 69.35 81.57 83.19 89.10 79.93 65.48 44.00 40.77 62.66
1956 41.65 34.90 54.32 68.97 74.84 77.67 91.61 87.13 79.20 64.74 46.07 43.71 63.73
1957 27.90 46.07 53.58 66.67 77.97 82.63 86.71 85.42 82.53 61.48 51.70 49.29 64.33
1958 46.26 54.11 55.77 62.57 80.13 85.57 95.61 94.58 78.00 68.94 51.70 43.94 68.10
1959 43.61 48.00 57.26 66.97 70.19 80.67 91.84 84.87 73.90 65.48 48.27 40.87 64.33
1960 32.48 48.62 54.84 65.13 70.68 84.27 96.84 85.06 80.27 66.16 52.57 36.48 64.45
1961 42.19 53.14 57.06 63.43 71.97 87.77 93.68 94.32 75.00 63.45 46.43 42.45 65.91
1962 39.55 46.75 51.94 66.83 a 66.90 80.87 88.94 84.65 79.80 63.32 53.17 45.06 63.98
1963 36.00 44.86 57.00 60.63 73.45 80.77 83.59 b 88.52 83.00 69.45 53.73 38.19 64.10
1964 47.87 51.97 54.29 62.90 71.32 78.43 88.48 83.55 76.63 64.68 47.40 38.87 63.87
1965 42.06 51.11 54.48 67.33 73.26 80.97 90.45 87.61 75.67 69.71 53.97 43.35 65.83
1966 43.10 48.86 56.32 67.30 75.10 78.53 85.39 88.77 81.90 66.65 53.67 47.94 66.13
1967 50.45 52.96 56.16 59.63 74.61 85.03 92.61 95.61 84.63 66.55 52.07 43.65 67.83
1968 44.10 50.10 59.23 62.80 73.71 81.67 93.10 83.58 78.50 63.55 49.67 40.06 65.00
1969 29.80 a 41.18 55.90 63.07 76.65 85.33 88.90 86.77 77.77 62.61 52.87 42.90 63.65
1970 39.16 48.07 55.42 59.37 71.84 84.77 91.45 88.74 73.37 63.61 50.60 43.58 64.16
1971 47.48 50.50 51.81 63.57 75.45 75.57 91.29 93.52 73.87 63.42 51.43 45.61 65.29
1972 42.23 44.00 57.03 60.90 74.45 81.70 88.10 90.13 75.00 64.55 50.53 35.52 63.68
1973 37.90 45.36 58.00 65.93 76.37 a 81.00 91.06 87.65 77.33 64.71 48.53 47.13 65.08
1974 36.71 50.32 56.42 62.07 69.35 83.93 86.81 88.68 80.70 66.45 51.50 48.45 65.12
1975 42.74 43.93 53.13 58.30 71.17 a 75.47 86.84 82.58 79.67 62.71 48.60 45.74 62.57
1976 43.55 47.10 52.39 60.97 73.81 77.03 87.10 81.94 81.73 65.29 51.37 41.81 63.67
1977 32.06 49.89 55.13 69.10 68.10 84.93 86.13 91.94 73.40 64.87 49.80 43.84 64.10
1978 38.48 45.89 57.48 62.43 67.07 p 83.15 j 88.97 86.68 76.40 69.68 45.83 42.29 61.41
1979 24.55 45.29 58.94 65.93 75.55 84.57 90.97 87.58 81.67 67.10 44.33 42.90 64.11
1980 32.74 40.90 55.16 67.80 71.71 76.74 c 87.35 85.27 i 72.69 q 64.03 50.10 a 45.50 c 59.20
1981 47.20 z ----- z 58.00 t 64.43 g ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1982 54.50 z 48.43 56.48 64.40 t 71.90 j 81.83 x 87.65 88.35 77.03 62.52 47.07 42.97 63.81
1983 47.35 51.32 59.61 64.80 76.94 79.57 84.74 88.13 76.03 66.32 55.47 31.52 65.15
1984 39.97 47.10 57.45 62.63 68.87 77.87 90.55 90.23 76.10 62.74 50.23 38.90 63.55
1985 32.55 41.46 56.13 67.50 76.06 83.10 95.42 85.74 72.43 64.26 37.93 27.55 61.68
1986 40.32 45.82 59.81 64.03 72.42 86.10 83.94 92.77 73.93 67.13 50.67 38.68 64.63
1987 38.71 49.11 57.45 69.40 75.84 83.83 87.47 a 88.35 82.23 67.84 54.40 39.52 66.18
1988 40.32 50.52 55.94 64.10 71.45 77.43 88.48 86.97 77.37 71.26 53.93 42.29 65.01
1989 46.42 33.93 53.32 66.07 71.35 81.70 85.81 84.35 79.83 65.61 53.67 38.77 63.40
1990 47.10 46.89 57.35 68.07 70.32 78.53 90.87 87.00 84.40 63.13 55.00 34.06 65.23
1991 37.29 51.00 53.00 64.07 68.39 74.57 88.45 89.94 80.57 65.97 48.43 44.16 63.82
1992 44.39 48.83 59.42 65.80 76.35 85.57 85.45 88.77 74.43 65.84 48.63 40.00 65.29
1993 30.03 36.00 48.48 62.47 75.61 77.20 79.81 83.58 78.20 66.94 45.57 41.97 60.49
1994 45.97 43.25 58.19 67.07 74.94 79.20 92.13 87.35 81.17 64.35 48.60 43.61 65.49
1995 38.23 50.43 56.58 61.97 73.77 77.00 86.81 82.35 81.43 63.00 53.63 41.06 63.86
1996 41.71 41.28 53.58 63.67 67.00 77.20 89.10 86.90 75.17 63.42 47.60 40.16 62.23
1997 40.19 46.64 56.06 62.07 74.16 77.27 84.77 88.77 77.83 63.87 50.73 42.52 63.74
1998 43.13 50.54 57.10 62.13 69.97 79.17 93.13 89.00 81.87 64.42 54.30 44.23 65.75
1999 47.39 51.54 55.68 62.77 69.19 77.27 85.39 87.03 77.87 64.39 54.73 45.45 64.89
2000 41.45 46.34 55.42 66.73 72.32 81.23 87.35 87.55 75.30 62.65 43.77 37.16 63.11
2001 39.03 45.00 57.35 61.40 74.68 77.03 87.35 89.68 81.70 63.94 50.43 44.03 64.30
2002 44.90 49.04 51.65 64.37 70.23 81.23 90.97 86.16 78.63 63.61 50.07 44.71 64.63
2003 44.68 49.68 59.13 63.27 ----- z 82.90 92.03 88.61 80.13 68.84 48.90 41.55 65.43
2004 33.65 45.46 e 61.35 66.53 71.77 81.60 91.26 88.39 76.60 67.10 52.17 44.29 65.01
2005 38.61 48.50 60.77 64.03 74.32 77.80 ----- z ----- z 77.30 ----- z 48.30 35.10 58.30
2006 47.74 ----- z 56.19 63.73 ----- z 79.43 91.58 ----- z 77.97 64.52 50.13 38.55 63.32
2007 37.81 45.46 58.90 63.30 73.29 79.67 90.81 85.68 78.40 62.58 50.37 43.58 64.15
2008 39.42 48.41 53.42 59.00 72.00 77.10 87.90 86.16 76.00 64.42 ----- z ----- z 66.38
Period of Record Statistics
MEAN 40.27 46.98 55.95 64.07 72.84 80.55 88.97 87.74 78.27 65.18 50.19 41.67 64.42
S.D. 5.65 4.34 2.64 2.76 2.96 3.27 3.43 3.07 3.04 2.19 3.49 4.11 1.38
SKEW -0.66 -1.12 -0.42 0.02 0.00 0.24 -0.05 0.47 0.10 0.79 -0.89 -1.02 0.00
MAX 50.45 54.11 61.35 69.40 80.13 87.77 96.84 95.61 84.63 71.26 55.47 49.29 68.10
MIN 24.55 33.93 48.48 58.30 66.90 74.57 79.81 81.94 72.43 61.48 37.93 27.55 60.49
NO YRS 52 52 53 52 49 51 52 50 52 52 53 53 46