PRIEST RAPIDS DAM, WASHINGTON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(456747)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 7.00 p 7.00
1957 -11.00 i -1.00 h 29.00 j 39.00 h 50.00 h 52.00 h 52.00 h 56.00 g 37.00 k 31.00 e 19.00 k 24.00 k -11.00
1958 18.00 i 29.00 h 23.00 o 33.00 h 41.00 i 52.00 i 55.00 j 52.00 j 37.00 j 32.00 h 12.00 l 19.00 k 12.00
1959 -1.00 j 17.00 h 24.00 e 32.00 h 35.00 l 48.00 h 55.00 h 51.00 j 43.00 j 30.00 i 12.00 l 19.00 i -1.00
1960 0.00 l 11.00 14.00 32.00 38.00 50.00 59.00 46.00 42.00 34.00 24.00 18.00 0.00
1961 18.00 27.00 28.00 32.00 41.00 49.00 59.00 61.00 41.00 30.00 16.00 7.00 7.00
1962 2.00 11.00 11.00 38.00 42.00 47.00 ----- z 53.00 40.00 35.00 22.00 20.00 2.00
1963 -1.00 11.00 27.00 33.00 34.00 40.00 49.00 53.00 43.00 28.00 22.00 11.00 -1.00
1964 22.00 22.00 25.00 25.00 41.00 48.00 54.00 51.00 45.00 34.00 26.00 -5.00 -5.00
1965 10.00 22.00 18.00 35.00 39.00 41.00 55.00 50.00 37.00 35.00 29.00 17.00 10.00
1966 15.00 22.00 26.00 30.00 36.00 40.00 53.00 58.00 51.00 32.00 30.00 25.00 15.00
1967 20.00 22.00 20.00 30.00 33.00 45.00 54.00 63.00 47.00 34.00 22.00 8.00 8.00
1968 11.00 24.00 32.00 27.00 34.00 50.00 b 58.00 55.00 47.00 30.00 27.00 -7.00 -7.00
1969 -7.00 -3.00 26.00 32.00 46.00 55.00 54.00 50.00 50.00 31.00 23.00 24.00 -7.00
1970 15.00 26.00 26.00 30.00 35.00 43.00 48.00 60.00 37.00 b 26.00 19.00 9.00 b 9.00
1971 14.00 d 19.00 b 20.00 c 32.00 41.00 g 41.00 47.00 55.00 a 39.00 18.00 e 25.00 15.00 14.00
1972 -2.00 d 5.00 d 15.00 29.00 40.00 52.00 54.00 50.00 ----- z ----- z 28.00 -1.00 -2.00
1973 5.00 25.00 32.00 31.00 41.00 35.00 57.00 54.00 49.00 33.00 19.00 25.00 5.00
1974 -2.00 25.00 24.00 30.00 40.00 48.00 54.00 60.00 45.00 34.00 27.00 21.00 -2.00
1975 16.00 12.00 23.00 26.00 40.00 a 48.00 60.00 50.00 50.00 30.00 20.00 15.00 12.00
1976 19.00 13.00 15.00 30.00 43.00 45.00 51.00 50.00 51.00 32.00 o 18.00 18.00 13.00
1977 9.00 24.00 28.00 h 32.00 40.00 48.00 56.00 53.00 40.00 35.00 18.00 8.00 8.00
1978 -1.00 17.00 27.00 34.00 39.00 51.00 48.00 47.00 43.00 28.00 i ----- z -3.00 -3.00
1979 -8.00 -7.00 26.00 35.00 40.00 c 52.00 d 49.00 59.00 47.00 36.00 a 20.00 21.00 -8.00
1980 0.00 20.00 27.00 31.00 45.00 c 48.00 d 55.00 43.00 44.00 30.00 24.00 c 12.00 0.00
1981 28.00 12.00 29.00 a 29.00 38.00 47.00 51.00 55.00 37.00 30.00 22.00 13.00 12.00
1982 -4.00 11.00 25.00 26.00 41.00 49.00 50.00 55.00 45.00 32.00 21.00 18.00 -4.00
1983 14.00 23.00 31.00 32.00 42.00 47.00 55.00 59.00 39.00 32.00 30.00 -3.00 -3.00
1984 17.00 26.00 28.00 31.00 38.00 50.00 56.00 49.00 41.00 18.00 25.00 -1.00 -1.00
1985 8.00 -5.00 26.00 29.00 35.00 48.00 59.00 48.00 39.00 27.00 -7.00 2.00 -7.00
1986 16.00 20.00 33.00 35.00 40.00 47.00 50.00 61.00 39.00 36.00 23.00 19.00 16.00
1987 12.00 20.00 29.00 37.00 41.00 49.00 55.00 54.00 ----- z 31.00 ----- z 13.00 12.00
1988 15.00 14.00 26.00 33.00 38.00 46.00 50.00 56.00 b 40.00 35.00 28.00 10.00 10.00
1989 18.00 -3.00 17.00 34.00 30.00 49.00 50.00 53.00 44.00 25.00 20.00 19.00 -3.00
1990 21.00 10.00 29.00 38.00 36.00 44.00 56.00 53.00 52.00 ----- z 27.00 -4.00 -4.00
1991 10.00 30.00 26.00 31.00 39.00 43.00 61.00 54.00 48.00 26.00 25.00 23.00 10.00
1992 25.00 27.00 32.00 27.00 40.00 54.00 58.00 44.00 39.00 36.00 20.00 10.00 10.00
1993 0.00 8.00 11.00 31.00 40.00 47.00 54.00 49.00 37.00 32.00 4.00 20.00 0.00
1994 20.00 5.00 20.00 35.00 40.00 50.00 55.00 58.00 47.00 31.00 18.00 13.00 5.00
1995 11.00 9.00 26.00 28.00 44.00 37.00 50.00 46.00 46.00 18.00 17.00 11.00 9.00
1996 -12.00 -10.00 20.00 29.00 40.00 46.00 47.00 50.00 33.00 25.00 22.00 0.00 b -12.00
1997 7.00 24.00 ----- z 29.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 20.00 7.00
1998 8.00 28.00 27.00 33.00 43.00 53.00 57.00 54.00 45.00 ----- z 28.00 4.00 4.00
1999 22.00 20.00 29.00 29.00 a 37.00 47.00 53.00 42.00 a 42.00 a 29.00 29.00 19.00 a 19.00
2000 14.00 24.00 b 27.00 a 32.00 c 42.00 f 48.00 a 54.00 47.00 38.00 c ----- z 16.00 14.00 a 14.00
2001 22.00 a 18.00 a 25.00 a 31.00 b 37.00 48.00 a 54.00 c 55.00 49.00 36.00 b 29.00 b 23.00 18.00
2002 17.00 18.00 21.00 33.00 41.00 51.00 55.00 55.00 43.00 19.00 15.00 ----- z 15.00
2003 30.00 18.00 29.00 ----- z 35.00 ----- z ----- z 60.00 45.00 ----- z 20.00 15.00 15.00
2004 ----- z 20.00 30.00 ----- z 42.00 49.00 60.00 58.00 44.00 32.00 a 22.00 24.00 20.00
2005 8.00 20.00 0.00 ----- z 42.00 46.00 56.00 ----- z ----- z 36.00 27.00 14.00 0.00
2006 26.00 10.00 23.00 36.00 38.00 56.00 b 58.00 k ----- z ----- z ----- z ----- z ----- z 10.00
Period of Record Statistics
MEAN 11.29 15.85 24.02 31.41 39.18 47.27 53.95 53.09 43.33 30.31 21.86 12.31 3.89
S.D. 10.14 9.84 6.55 3.10 3.26 4.37 3.74 5.16 4.64 5.19 6.78 9.06 8.33
SKEW -0.38 -0.95 -1.43 0.15 -0.50 -0.65 -0.13 -0.17 0.01 -1.14 -2.10 -0.57 -0.09
MAX 30.00 30.00 33.00 38.00 46.00 56.00 61.00 63.00 52.00 36.00 30.00 25.00 19.00
MIN -12.00 -10.00 0.00 25.00 30.00 35.00 47.00 42.00 33.00 18.00 -7.00 -7.00 -12.00
NO YRS 45 47 46 44 44 45 43 44 42 39 43 45 27