SILVERTON, OREGON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(357823)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1962 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 47.00 z 44.00 36.00 27.00 23.00 23.00
1963 7.00 28.00 27.00 31.00 38.00 44.00 46.00 47.00 45.00 33.00 28.00 22.00 7.00
1964 31.00 26.00 29.00 30.00 33.00 42.00 46.00 46.00 41.00 32.00 24.00 5.00 5.00
1965 29.00 28.00 26.00 33.00 34.00 40.00 45.00 45.00 34.00 37.00 28.00 14.00 14.00
1966 23.00 27.00 26.00 34.00 37.00 37.00 47.00 46.00 45.00 32.00 30.00 29.00 23.00
1967 32.00 29.00 26.00 29.00 37.00 45.00 47.00 51.00 41.00 35.00 28.00 20.00 20.00
1968 22.00 28.00 28.00 29.00 36.00 43.00 48.00 45.00 42.00 32.00 30.00 7.00 7.00
1969 10.00 27.00 26.00 31.00 36.00 47.00 45.00 46.00 42.00 32.00 25.00 22.00 10.00
1970 20.00 31.00 31.00 31.00 35.00 43.00 44.00 45.00 36.00 30.00 27.00 22.00 20.00
1971 19.00 24.00 19.00 30.00 38.00 43.00 43.00 45.00 40.00 23.00 25.00 23.00 19.00
1972 15.00 17.00 28.00 29.00 34.00 41.00 45.00 46.00 35.00 28.00 30.00 0.00 0.00
1973 14.00 29.00 32.00 33.00 37.00 39.00 44.00 43.00 40.00 36.00 27.00 29.00 14.00
1974 9.00 29.00 25.00 32.00 36.00 43.00 45.00 45.00 40.00 33.00 30.00 22.00 9.00
1975 19.00 24.00 28.00 29.00 37.00 42.00 46.00 46.00 45.00 36.00 27.00 27.00 19.00
1976 24.00 21.00 24.00 29.00 39.00 38.00 45.00 45.00 42.00 33.00 25.00 27.00 21.00
1977 17.00 23.00 29.00 31.00 35.00 43.00 47.00 47.00 39.00 38.00 16.00 26.00 16.00
1978 27.00 27.00 30.00 31.00 38.00 46.00 47.00 47.00 42.00 30.00 19.00 11.00 11.00
1979 4.00 13.00 32.00 37.00 37.00 40.00 46.00 48.00 42.00 37.00 25.00 27.00 4.00
1980 8.00 24.00 32.00 31.00 38.00 43.00 48.00 40.00 41.00 33.00 28.00 22.00 8.00
1981 28.00 25.00 28.00 29.00 37.00 42.00 42.00 44.00 40.00 34.00 26.00 27.00 25.00
1982 16.00 18.00 29.00 28.00 36.00 42.00 45.00 46.00 37.00 32.00 25.00 22.00 16.00
1983 24.00 28.00 34.00 32.00 39.00 44.00 46.00 46.00 36.00 35.00 29.00 6.00 6.00
1984 20.00 30.00 32.00 34.00 37.00 39.00 46.00 48.00 37.00 35.00 31.00 15.00 15.00
1985 23.00 ----- z 27.00 34.00 32.00 42.00 50.00 42.00 38.00 28.00 13.00 20.00 13.00
1986 29.00 27.00 31.00 31.00 35.00 45.00 45.00 49.00 40.00 36.00 28.00 26.00 26.00
1987 21.00 ----- z 32.00 34.00 40.00 44.00 49.00 45.00 43.00 37.00 26.00 24.00 21.00
1988 22.00 21.00 27.00 31.00 38.00 43.00 43.00 47.00 39.00 32.00 31.00 26.00 a 21.00
1989 24.00 6.00 28.00 36.00 39.00 45.00 47.00 48.00 41.00 29.00 31.00 25.00 6.00
1990 25.00 19.00 ----- z 35.00 35.00 46.00 46.00 47.00 49.00 33.00 31.00 3.00 3.00
1991 21.00 33.00 29.00 34.00 39.00 38.00 47.00 46.00 40.00 26.00 30.00 27.00 21.00
1992 27.00 32.00 34.00 32.00 35.00 46.00 51.00 47.00 40.00 33.00 28.00 23.00 23.00
1993 17.00 20.00 34.00 34.00 40.00 45.00 46.00 44.00 38.00 37.00 15.00 22.00 15.00
1994 26.00 18.00 31.00 33.00 37.00 42.00 48.00 50.00 45.00 33.00 25.00 23.00 18.00
1995 25.00 19.00 27.00 32.00 40.00 44.00 48.00 46.00 47.00 27.00 26.00 25.00 19.00
1996 16.00 12.00 27.00 34.00 33.00 41.00 45.00 48.00 41.00 33.00 28.00 26.00 12.00
1997 21.00 27.00 32.00 29.00 36.00 44.00 48.00 51.00 44.00 34.00 34.00 28.00 21.00
1998 25.00 29.00 28.00 34.00 40.00 45.00 53.00 48.00 41.00 34.00 32.00 10.00 a 10.00
1999 27.00 28.00 27.00 31.00 36.00 41.00 46.00 50.00 36.00 33.00 32.00 24.00 a 24.00
2000 26.00 a 30.00 28.00 30.00 35.00 46.00 47.00 45.00 35.00 34.00 20.00 26.00 20.00
2001 25.00 27.00 30.00 29.00 36.00 39.00 a 48.00 49.00 a 43.00 31.00 a 31.00 29.00 25.00
2002 29.00 28.00 28.00 35.00 34.00 43.00 46.00 49.00 45.00 25.00 28.00 28.00 25.00
2003 29.00 25.00 30.00 32.00 37.00 47.00 47.00 49.00 45.00 31.00 25.00 23.00 23.00
2004 19.00 30.00 33.00 33.00 41.00 44.00 49.00 52.00 44.00 37.00 29.00 27.00 19.00
2005 24.00 25.00 32.00 37.00 41.00 45.00 49.00 50.00 41.00 35.00 25.00 19.00 19.00
2006 31.00 20.00 28.00 34.00 ----- z 47.00 48.00 46.00 43.00 26.00 28.00 22.00 20.00
2007 18.00 24.00 30.00 31.00 37.00 42.00 51.00 49.00 41.00 34.00 27.00 27.00 18.00
2008 20.00 30.00 29.00 30.00 37.00 41.00 49.00 49.00 40.00 34.00 29.00 17.00 17.00
2009 24.00 27.00 26.00 29.00 36.00 46.00 48.00 47.00 45.00 35.00 34.00 10.00 10.00
2010 33.00 30.00 30.00 33.00 37.00 45.00 48.00 47.00 45.00 36.00 17.00 27.00 17.00
2011 21.00 15.00 31.00 31.00 36.00 42.00 46.00 51.00 43.00 34.00 30.00 25.00 15.00
2012 26.00 31.00 27.00 30.00 35.00 41.00 45.00 46.00 43.00 39.00 31.00 29.00 26.00
2013 22.00 30.00 28.00 52.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 22.00
Period of Record Statistics
MEAN 21.84 24.88 28.90 31.82 36.76 42.90 46.72 46.88 41.20 32.90 26.94 21.35 16.07
S.D. 6.55 5.74 2.85 2.26 2.08 2.50 2.12 2.39 3.29 3.49 4.55 7.41 6.69
SKEW -0.75 -1.19 -0.54 0.40 0.06 -0.37 0.45 -0.16 -0.18 -0.85 -1.29 -1.35 -0.46
MAX 33.00 33.00 34.00 37.00 41.00 47.00 53.00 52.00 49.00 39.00 34.00 29.00 26.00
MIN 4.00 6.00 19.00 28.00 32.00 37.00 42.00 40.00 34.00 23.00 13.00 0.00 0.00
NO YRS 51 49 50 50 49 50 50 50 51 51 51 51 46