CORVALLIS WATER BUREAU,

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(351877)

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
1936 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1937 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1938 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1939 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1940 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1941 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1942 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1943 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1944 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1945 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1946 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1947 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1949 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1950 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1951 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1952 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1953 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
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 ----- z ----- z ----- z ----- z ----- z 9999.00
1960 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1961 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1962 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1963 ----- z ----- z ----- z ----- z ----- z 40.00 d 43.00 45.00 43.00 33.00 28.00 22.00 22.00
1964 29.00 25.00 28.00 30.00 30.00 41.00 41.00 a 44.00 39.00 30.00 22.00 6.00 a 6.00
1965 30.00 c 29.00 26.00 28.00 30.00 a 38.00 40.00 41.00 40.00 33.00 30.00 14.00 a 14.00
1966 25.00 27.00 27.00 31.00 30.00 32.00 a 42.00 40.00 43.00 31.00 28.00 25.00 25.00
1967 29.00 27.00 27.00 28.00 31.00 43.00 44.00 46.00 43.00 35.00 28.00 19.00 19.00
1968 19.00 25.00 31.00 29.00 33.00 37.00 a 43.00 40.00 37.00 33.00 29.00 14.00 14.00
1969 12.00 28.00 25.00 28.00 34.00 45.00 43.00 42.00 38.00 29.00 19.00 17.00 b 12.00
1970 21.00 b 29.00 30.00 a 29.00 33.00 42.00 39.00 40.00 34.00 30.00 28.00 22.00 21.00
1971 18.00 25.00 20.00 29.00 34.00 38.00 42.00 44.00 34.00 23.00 24.00 23.00 18.00
1972 13.00 16.00 28.00 28.00 35.00 40.00 42.00 42.00 32.00 28.00 29.00 2.00 2.00
1973 14.00 29.00 29.00 30.00 32.00 37.00 a 41.00 35.00 37.00 33.00 24.00 26.00 14.00
1974 9.00 28.00 23.00 31.00 33.00 39.00 43.00 43.00 38.00 33.00 b 30.00 26.00 9.00
1975 24.00 25.00 28.00 29.00 31.00 38.00 43.00 42.00 42.00 32.00 26.00 23.00 23.00
1976 24.00 21.00 25.00 29.00 33.00 34.00 43.00 43.00 42.00 33.00 23.00 a 26.00 21.00
1977 17.00 25.00 28.00 30.00 32.00 a 37.00 42.00 48.00 41.00 38.00 19.00 28.00 17.00
1978 24.00 29.00 29.00 32.00 34.00 a 44.00 43.00 46.00 40.00 32.00 19.00 9.00 9.00
1979 4.00 12.00 31.00 31.00 36.00 38.00 45.00 46.00 42.00 37.00 28.00 25.00 4.00
1980 9.00 24.00 30.00 31.00 35.00 38.00 45.00 41.00 42.00 34.00 28.00 22.00 9.00
1981 27.00 26.00 29.00 31.00 33.00 40.00 42.00 44.00 38.00 34.00 28.00 28.00 26.00
1982 15.00 18.00 30.00 30.00 31.00 42.00 42.00 44.00 37.00 30.00 24.00 20.00 15.00
1983 20.00 27.00 31.00 29.00 34.00 39.00 44.00 47.00 37.00 34.00 30.00 5.00 5.00
1984 20.00 30.00 31.00 32.00 32.00 39.00 42.00 44.00 35.00 32.00 28.00 15.00 15.00
1985 21.00 14.00 28.00 32.00 31.00 39.00 43.00 41.00 39.00 29.00 11.00 18.00 11.00
1986 29.00 27.00 29.00 30.00 34.00 39.00 41.00 44.00 38.00 34.00 27.00 24.00 24.00
1987 22.00 24.00 28.00 29.00 35.00 38.00 45.00 44.00 39.00 38.00 28.00 20.00 20.00
1988 22.00 21.00 29.00 29.00 33.00 39.00 39.00 43.00 36.00 35.00 30.00 24.00 21.00
1989 25.00 2.00 29.00 32.00 35.00 41.00 44.00 45.00 41.00 30.00 30.00 27.00 2.00
1990 23.00 17.00 27.00 33.00 33.00 44.00 44.00 44.00 46.00 34.00 30.00 2.00 2.00
1991 18.00 31.00 28.00 30.00 33.00 33.00 41.00 42.00 38.00 26.00 26.00 25.00 18.00
1992 25.00 29.00 33.00 31.00 35.00 37.00 46.00 41.00 39.00 30.00 28.00 22.00 22.00
1993 16.00 23.00 28.00 32.00 39.00 40.00 44.00 42.00 34.00 36.00 15.00 21.00 15.00
1994 26.00 21.00 30.00 31.00 35.00 39.00 44.00 42.00 45.00 35.00 27.00 24.00 21.00
1995 27.00 24.00 28.00 30.00 41.00 39.00 46.00 43.00 47.00 28.00 28.00 24.00 24.00
1996 19.00 14.00 26.00 32.00 30.00 40.00 44.00 44.00 39.00 32.00 29.00 24.00 14.00
1997 18.00 27.00 29.00 29.00 35.00 42.00 45.00 46.00 42.00 32.00 31.00 27.00 18.00
1998 28.00 30.00 29.00 30.00 36.00 43.00 49.00 47.00 42.00 31.00 30.00 11.00 11.00
1999 30.00 31.00 29.00 31.00 34.00 38.00 42.00 46.00 35.00 32.00 33.00 26.00 26.00
2000 26.00 30.00 30.00 29.00 33.00 42.00 44.00 43.00 35.00 33.00 24.00 26.00 24.00
2001 25.00 27.00 30.00 29.00 35.00 38.00 43.00 44.00 35.00 33.00 31.00 29.00 25.00
2002 30.00 29.00 28.00 30.00 31.00 39.00 44.00 ----- z 41.00 22.00 23.00 27.00 22.00
2003 29.00 26.00 31.00 34.00 32.00 43.00 44.00 44.00 41.00 28.00 24.00 27.00 24.00
2004 20.00 30.00 32.00 31.00 40.00 43.00 46.00 49.00 40.00 36.00 28.00 30.00 20.00
2005 23.00 26.00 31.00 33.00 39.00 41.00 48.00 45.00 38.00 36.00 27.00 18.00 18.00
2006 30.00 19.00 28.00 31.00 34.00 45.00 46.00 45.00 40.00 27.00 26.00 25.00 19.00
2007 17.00 24.00 30.00 28.00 35.00 40.00 47.00 46.00 38.00 34.00 25.00 26.00 17.00
2008 18.00 28.00 27.00 27.00 32.00 36.00 43.00 39.00 37.00 29.00 25.00 11.00 11.00
2009 20.00 23.00 23.00 24.00 28.00 37.00 40.00 38.00 33.00 24.00 22.00 2.00 2.00
2010 22.00 19.00 30.00 31.00 34.00 41.00 46.00 43.00 42.00 35.00 23.00 29.00 19.00
2011 21.00 12.00 31.00 29.00 31.00 38.00 45.00 45.00 a 42.00 32.00 28.00 22.00 12.00
2012 24.00 28.00 25.00 28.00 e 30.00 35.00 f 42.00 41.00 39.00 32.00 27.00 27.00 24.00
2013 19.00 27.00 a 27.00 o ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 19.00
Period of Record Statistics
MEAN 21.52 24.16 28.41 30.00 33.45 39.49 43.38 43.33 39.10 31.80 26.16 20.70 15.70
S.D. 6.00 5.95 2.46 1.77 2.65 2.81 2.12 2.63 3.35 3.54 4.21 7.61 7.07
SKEW -0.66 -1.52 -1.09 -0.48 0.74 -0.23 0.25 -0.55 0.05 -0.75 -1.43 -1.20 -0.48
MAX 30.00 31.00 33.00 34.00 41.00 45.00 49.00 49.00 47.00 38.00 33.00 30.00 26.00
MIN 4.00 2.00 20.00 24.00 28.00 32.00 39.00 35.00 32.00 22.00 11.00 2.00 2.00
NO YRS 50 50 49 49 49 49 50 49 50 50 50 50 47