MC NARY DAM, WASHINGTON

Monthly Extreme Minimum 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 30.00 f 26.00 23.00 23.00
1955 23.00 23.00 14.00 31.00 40.00 49.00 50.00 53.00 41.00 36.00 -2.00 15.00 -2.00
1956 3.00 0.00 23.00 31.00 41.00 46.00 54.00 53.00 43.00 35.00 21.00 14.00 0.00
1957 -22.00 15.00 31.00 37.00 49.00 51.00 53.00 51.00 40.00 36.00 25.00 26.00 -22.00
1958 21.00 32.00 26.00 38.00 35.00 47.00 53.00 54.00 42.00 29.00 18.00 24.00 18.00
1959 2.00 25.00 28.00 32.00 37.00 47.00 50.00 51.00 44.00 32.00 13.00 22.00 2.00
1960 11.00 12.00 18.00 31.00 40.00 48.00 52.00 47.00 42.00 32.00 27.00 21.00 11.00
1961 22.00 30.00 30.00 32.00 35.00 40.00 56.00 58.00 40.00 30.00 17.00 11.00 11.00
1962 0.00 11.00 20.00 36.00 a 36.00 41.00 44.00 47.00 40.00 39.00 22.00 20.00 0.00
1963 0.00 18.00 26.00 32.00 40.00 43.00 43.00 43.00 44.00 b 30.00 23.00 16.00 0.00
1964 26.00 24.00 23.00 31.00 35.00 46.00 54.00 43.00 43.00 33.00 25.00 -3.00 -3.00
1965 23.00 27.00 19.00 34.00 38.00 45.00 53.00 49.00 35.00 38.00 27.00 21.00 19.00
1966 25.00 25.00 24.00 32.00 a 39.00 42.00 52.00 53.00 48.00 36.00 32.00 29.00 24.00
1967 31.00 24.00 25.00 33.00 41.00 51.00 57.00 56.00 46.00 36.00 25.00 12.00 12.00
1968 18.00 21.00 31.00 30.00 39.00 49.00 55.00 53.00 42.00 37.00 31.00 -5.00 -5.00
1969 -1.00 a 17.00 25.00 35.00 40.00 52.00 56.00 48.00 44.00 28.00 29.00 27.00 -1.00
1970 17.00 27.00 29.00 30.00 37.00 48.00 52.00 50.00 38.00 28.00 19.00 22.00 17.00
1971 16.00 21.00 23.00 32.00 40.00 48.00 48.00 54.00 40.00 20.00 24.00 15.00 15.00
1972 3.00 8.00 30.00 29.00 39.00 51.00 54.00 54.00 40.00 27.00 28.00 -4.00 -4.00
1973 1.00 22.00 32.00 29.00 41.00 a 44.00 50.00 51.00 40.00 35.00 31.00 26.00 1.00
1974 -2.00 28.00 26.00 35.00 40.00 35.00 50.00 a 51.00 42.00 33.00 29.00 21.00 -2.00
1975 16.00 20.00 23.00 29.00 36.00 a 47.00 52.00 50.00 45.00 38.00 25.00 24.00 16.00
1976 22.00 13.00 20.00 32.00 40.00 44.00 50.00 50.00 45.00 29.00 18.00 17.00 13.00
1977 8.00 26.00 30.00 33.00 39.00 47.00 52.00 54.00 44.00 37.00 14.00 21.00 8.00
1978 7.00 29.00 29.00 36.00 40.00 49.00 54.00 52.00 42.00 29.00 14.00 a 0.00 0.00
1979 -3.00 -7.00 28.00 36.00 42.00 43.00 44.00 57.00 44.00 41.00 24.00 27.00 -7.00
1980 2.00 16.00 25.00 29.00 43.00 44.00 b 52.00 47.00 45.00 31.00 31.00 a 10.00 c 2.00
1981 31.00 b 15.00 28.00 32.00 a 38.00 45.00 49.00 a 51.00 f 43.00 a 30.00 c 26.00 e 23.00 a 15.00
1982 6.00 14.00 29.00 29.00 35.00 47.00 51.00 51.00 42.00 30.00 24.00 23.00 6.00
1983 26.00 26.00 36.00 32.00 41.00 49.00 50.00 51.00 34.00 35.00 31.00 -9.00 -9.00
1984 11.00 27.00 28.00 34.00 38.00 41.00 53.00 54.00 39.00 27.00 28.00 3.00 3.00
1985 18.00 -3.00 28.00 34.00 d 38.00 47.00 56.00 50.00 39.00 32.00 1.00 6.00 -3.00
1986 21.00 25.00 32.00 34.00 34.00 a 40.00 52.00 58.00 45.00 36.00 22.00 25.00 21.00
1987 18.00 24.00 26.00 36.00 41.00 46.00 55.00 53.00 44.00 34.00 26.00 18.00 18.00
1988 20.00 13.00 29.00 34.00 38.00 48.00 49.00 53.00 41.00 33.00 32.00 20.00 13.00
1989 24.00 -6.00 18.00 36.00 42.00 50.00 55.00 56.00 48.00 31.00 29.00 24.00 -6.00
1990 26.00 19.00 28.00 39.00 39.00 48.00 52.00 55.00 49.00 34.00 32.00 -7.00 -7.00
1991 17.00 28.00 28.00 36.00 39.00 43.00 56.00 54.00 45.00 24.00 28.00 25.00 17.00
1992 25.00 28.00 32.00 34.00 41.00 51.00 57.00 47.00 43.00 37.00 26.00 17.00 17.00
1993 4.00 8.00 12.00 38.00 43.00 48.00 52.00 47.00 40.00 35.00 5.00 26.00 4.00
1994 23.00 9.00 27.00 40.00 40.00 46.00 53.00 55.00 49.00 35.00 26.00 17.00 9.00
1995 13.00 12.00 24.00 36.00 42.00 46.00 54.00 50.00 43.00 29.00 21.00 19.00 12.00
1996 -4.00 -7.00 25.00 36.00 36.00 46.00 52.00 53.00 40.00 33.00 27.00 13.00 -7.00
1997 15.00 25.00 30.00 29.00 41.00 49.00 51.00 57.00 46.00 31.00 30.00 26.00 15.00
1998 12.00 29.00 29.00 35.00 42.00 50.00 58.00 55.00 50.00 29.00 33.00 5.00 5.00
1999 25.00 28.00 30.00 32.00 35.00 44.00 48.00 51.00 40.00 33.00 33.00 28.00 25.00
2000 27.00 26.00 32.00 a 35.00 39.00 48.00 a 52.00 a 50.00 35.00 34.00 24.00 19.00 19.00
2001 26.00 24.00 26.00 34.00 38.00 46.00 56.00 53.00 45.00 39.00 27.00 26.00 24.00
2002 22.00 24.00 26.00 31.00 34.00 42.00 54.00 47.00 42.00 20.00 18.00 27.00 18.00
2003 30.00 20.00 27.00 32.00 ----- z 49.00 52.00 57.00 47.00 29.00 18.00 15.00 15.00
2004 -2.00 28.00 e 31.00 35.00 38.00 49.00 55.00 57.00 45.00 35.00 26.00 24.00 -2.00
2005 15.00 20.00 31.00 31.00 44.00 47.00 ----- z ----- z 45.00 ----- z 26.00 15.00 15.00
2006 29.00 ----- z 24.00 34.00 ----- z 51.00 55.00 ----- z 44.00 24.00 19.00 21.00 19.00
2007 8.00 20.00 32.00 30.00 39.00 49.00 55.00 51.00 42.00 28.00 28.00 25.00 8.00
2008 11.00 27.00 28.00 29.00 39.00 46.00 52.00 51.00 43.00 32.00 ----- z ----- z 11.00
Period of Record Statistics
MEAN 14.19 19.06 26.56 33.19 39.15 46.44 52.34 51.86 42.72 32.15 23.74 17.15 6.69
S.D. 11.46 9.88 4.69 2.82 2.80 3.39 3.19 3.56 3.37 4.52 7.46 9.81 10.65
SKEW -0.67 -1.23 -0.97 0.27 0.51 -0.89 -0.91 -0.40 -0.28 -0.60 -1.55 -1.19 -0.22
MAX 31.00 32.00 36.00 40.00 49.00 52.00 58.00 58.00 50.00 41.00 33.00 29.00 25.00
MIN -22.00 -7.00 12.00 29.00 34.00 35.00 43.00 43.00 34.00 20.00 -2.00 -9.00 -22.00
NO YRS 54 53 54 54 52 54 53 51 54 53 54 54 48