TROUTDALE SUBSTATION, OREGON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(358634)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z 42.00 45.00 a 38.00 29.00 26.00 22.00 22.00
1949 13.00 22.00 30.00 a 31.00 35.00 37.00 44.00 45.00 39.00 24.00 33.00 21.00 a 13.00
1950 3.00 3.00 27.00 30.00 a 36.00 41.00 45.00 46.00 35.00 30.00 a 26.00 34.00 3.00
1951 19.00 23.00 24.00 32.00 35.00 42.00 45.00 41.00 37.00 31.00 29.00 21.00 19.00
1952 19.00 28.00 29.00 29.00 31.00 42.00 44.00 45.00 a 38.00 a 34.00 25.00 30.00 19.00
1953 31.00 a 28.00 27.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 38.00 a 30.00 27.00
1954 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1955 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1956 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1957 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1958 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1959 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.00 f 44.00 32.00 27.00 a 28.00 27.00
1960 17.00 25.00 b 22.00 33.00 36.00 a 42.00 44.00 44.00 36.00 33.00 28.00 16.00 f 16.00
1961 25.00 a 35.00 32.00 30.00 39.00 a 45.00 b 48.00 49.00 a 37.00 30.00 24.00 20.00 a 20.00
1962 14.00 14.00 27.00 34.00 33.00 40.00 43.00 e 45.00 43.00 34.00 31.00 25.00 14.00
1963 10.00 25.00 28.00 31.00 36.00 43.00 49.00 r 45.00 43.00 33.00 30.00 27.00 10.00
1964 30.00 24.00 31.00 30.00 32.00 42.00 46.00 g 45.00 d 40.00 34.00 26.00 6.00 6.00
1965 31.00 30.00 29.00 30.00 34.00 44.00 a 47.00 c 42.00 31.00 38.00 b 30.00 18.00 18.00
1966 26.00 27.00 30.00 35.00 36.00 39.00 47.00 45.00 42.00 32.00 33.00 31.00 26.00
1967 33.00 29.00 27.00 33.00 38.00 b 47.00 50.00 48.00 44.00 38.00 30.00 24.00 24.00
1968 25.00 25.00 28.00 30.00 38.00 45.00 48.00 49.00 43.00 a 39.00 a 31.00 6.00 d 6.00
1969 8.00 31.00 29.00 33.00 36.00 50.00 46.00 45.00 40.00 34.00 a 34.00 32.00 8.00
1970 25.00 33.00 31.00 30.00 38.00 a 45.00 47.00 45.00 35.00 26.00 26.00 24.00 24.00
1971 24.00 27.00 26.00 30.00 39.00 44.00 41.00 50.00 40.00 28.00 26.00 28.00 24.00
1972 18.00 21.00 a 28.00 30.00 35.00 46.00 48.00 45.00 28.00 c 30.00 31.00 a 12.00 12.00
1973 20.00 27.00 32.00 33.00 38.00 a 40.00 47.00 44.00 42.00 b 35.00 28.00 33.00 20.00
1974 13.00 31.00 29.00 33.00 39.00 44.00 45.00 49.00 42.00 36.00 35.00 a 28.00 13.00
1975 26.00 27.00 29.00 b 29.00 38.00 45.00 50.00 47.00 43.00 39.00 30.00 30.00 26.00
1976 29.00 30.00 a 26.00 33.00 39.00 39.00 45.00 48.00 45.00 36.00 27.00 28.00 26.00
1977 21.00 32.00 29.00 31.00 37.00 43.00 43.00 51.00 45.00 38.00 25.00 33.00 21.00
1978 20.00 33.00 28.00 33.00 ----- z 46.00 50.00 49.00 43.00 37.00 25.00 14.00 14.00
1979 8.00 15.00 31.00 40.00 39.00 43.00 48.00 49.00 44.00 40.00 28.00 29.00 8.00
1980 16.00 25.00 33.00 32.00 39.00 e 45.00 e 51.00 d 43.00 d 42.00 d 31.00 e 31.00 f 28.00 e 16.00
1981 33.00 e 26.00 d 30.00 d 32.00 d 39.00 f 45.00 d 45.00 d 47.00 e 43.00 e 35.00 e 30.00 f 31.00 e 26.00
1982 11.00 24.00 29.00 31.00 37.00 43.00 45.00 50.00 43.00 38.00 26.00 29.00 11.00
1983 26.00 34.00 37.00 32.00 a 42.00 m 45.00 48.00 48.00 33.00 34.00 b 35.00 10.00 10.00
1984 25.00 28.00 32.00 35.00 39.00 42.00 48.00 47.00 39.00 35.00 34.00 17.00 17.00
1985 17.00 a 17.00 28.00 35.00 34.00 43.00 47.00 45.00 42.00 27.00 12.00 a 9.00 b 9.00
1986 24.00 28.00 m 34.00 j 32.00 37.00 k 45.00 46.00 m 46.00 j 40.00 33.00 i 32.00 28.00 24.00
1987 20.00 23.00 32.00 a 33.00 40.00 42.00 50.00 45.00 40.00 35.00 33.00 23.00 20.00
1988 28.00 21.00 27.00 a 31.00 37.00 40.00 45.00 43.00 37.00 35.00 32.00 27.00 21.00
1989 27.00 0.00 15.00 35.00 39.00 46.00 38.00 ----- z 32.00 31.00 35.00 d 25.00 0.00
1990 27.00 18.00 29.00 37.00 b 38.00 48.00 48.00 50.00 48.00 38.00 33.00 10.00 10.00
1991 23.00 a ----- z 31.00 34.00 40.00 40.00 48.00 50.00 44.00 28.00 30.00 29.00 23.00
1992 30.00 35.00 33.00 34.00 37.00 46.00 51.00 48.00 h 38.00 33.00 32.00 25.00 25.00
1993 19.00 24.00 29.00 35.00 42.00 48.00 51.00 45.00 40.00 40.00 22.00 25.00 19.00
1994 30.00 24.00 27.00 37.00 43.00 45.00 51.00 50.00 46.00 35.00 25.00 25.00 24.00
1995 28.00 23.00 28.00 33.00 43.00 47.00 50.00 49.00 ----- z 30.00 29.00 27.00 m 23.00
1996 12.00 l 12.00 j 29.00 k 30.00 i 36.00 n 42.00 k 47.00 n 43.00 l 39.00 o 35.00 k 28.00 k 26.00 m 12.00
1997 22.00 i 29.00 m 32.00 q 30.00 i 39.00 j 46.00 l 48.00 o 52.00 m 43.00 o 34.00 j 28.00 m 28.00 k 22.00
1998 21.00 n 28.00 i 26.00 l 36.00 i 33.00 l 43.00 k 42.00 l 51.00 p 38.00 r 28.00 m 36.00 l 17.00 p 17.00
1999 27.00 n 27.00 o 29.00 q 31.00 n 35.00 u 42.00 k 46.00 m 53.00 s 46.00 z 34.00 37.00 30.00 27.00
2000 30.00 30.00 31.00 32.00 37.00 42.00 47.00 45.00 44.00 37.00 22.00 28.00 a 22.00
2001 27.00 27.00 31.00 31.00 37.00 43.00 49.00 49.00 43.00 35.00 32.00 33.00 27.00
2002 28.00 30.00 27.00 34.00 34.00 41.00 46.00 45.00 42.00 31.00 19.00 28.00 19.00
2003 29.00 16.00 29.00 34.00 35.00 43.00 45.00 47.00 44.00 36.00 27.00 21.00 16.00
2004 5.00 24.00 32.00 31.00 40.00 43.00 49.00 51.00 42.00 35.00 27.00 ----- z 5.00
2005 ----- z 22.00 29.00 34.00 38.00 40.00 46.00 42.00 34.00 34.00 25.00 21.00 21.00
2006 30.00 15.00 24.00 28.00 ----- z 39.00 42.00 38.00 36.00 27.00 15.00 ----- z 15.00
2007 ----- z 18.00 20.00 c 24.00 27.00 34.00 42.00 47.00 40.00 34.00 30.00 27.00 18.00
2008 24.00 28.00 26.00 26.00 37.00 43.00 46.00 47.00 40.00 33.00 34.00 17.00 17.00
2009 27.00 27.00 29.00 29.00 37.00 44.00 46.00 47.00 44.00 29.00 32.00 18.00 18.00
2010 35.00 29.00 27.00 33.00 36.00 43.00 46.00 43.00 45.00 35.00 17.00 g 29.00 17.00
2011 27.00 21.00 29.00 31.00 k 34.00 42.00 46.00 49.00 46.00 35.00 28.00 25.00 21.00
2012 28.00 30.00 27.00 a 35.00 a 34.00 43.00 45.00 45.00 41.00 38.00 35.00 a 32.00 27.00
2013 23.00 30.00 28.00 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 23.00
Period of Record Statistics
MEAN 22.74 24.79 28.48 32.15 36.90 43.09 46.43 46.33 40.46 33.60 28.80 24.23 18.03
S.D. 7.60 6.97 3.36 2.74 2.94 2.88 2.84 2.78 4.14 3.71 5.05 7.22 6.40
SKEW -0.80 -1.41 -1.23 -0.13 -0.63 -0.41 -0.44 -0.42 -0.87 -0.44 -0.93 -1.01 -0.45
MAX 35.00 35.00 37.00 40.00 43.00 50.00 51.00 51.00 48.00 40.00 38.00 34.00 27.00
MIN 3.00 0.00 15.00 24.00 27.00 34.00 38.00 38.00 28.00 24.00 12.00 6.00 3.00
NO YRS 53 53 54 52 48 53 51 51 54 55 54 53 32