CORVALLIS WATER BUREAU, OREGON

Monthly Average 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 47.77 d 47.71 51.45 50.83 43.68 38.30 32.42 44.59
1964 32.74 31.93 34.10 37.83 39.55 47.57 53.10 a 51.58 46.20 41.74 33.80 33.70 a 40.32
1965 33.61 c 34.71 35.16 40.20 40.13 a 45.60 50.52 52.81 48.03 45.45 40.57 30.63 a 41.45
1966 32.42 32.57 36.10 38.77 40.52 46.48 a 49.97 50.74 49.33 41.13 38.10 36.45 41.05
1967 35.87 32.79 33.42 35.80 40.65 49.00 53.52 53.58 52.07 42.61 39.27 33.06 41.80
1968 32.52 37.34 40.84 37.07 42.00 47.41 a 50.26 50.23 47.53 40.03 38.77 31.61 41.30
1969 29.52 31.32 33.90 37.50 45.16 51.13 48.19 47.06 47.63 39.68 36.07 35.48 b 40.22
1970 35.34 b 34.39 35.23 a 35.87 41.29 47.97 47.42 47.48 43.93 38.26 36.37 31.48 39.59
1971 31.65 31.29 32.61 35.07 41.58 44.60 48.55 50.87 44.37 37.84 34.60 32.16 38.76
1972 30.61 33.76 38.35 33.67 43.81 47.17 51.39 50.97 45.07 39.00 37.53 27.77 39.92
1973 29.45 34.11 34.74 37.03 42.13 49.00 a 47.16 43.68 46.30 39.29 34.27 36.32 39.46
1974 26.97 32.50 34.97 37.80 40.71 47.50 50.16 51.26 48.97 39.10 b 37.63 36.39 40.33
1975 36.52 32.82 33.39 34.10 41.87 45.90 50.77 49.39 47.73 42.06 34.67 35.26 40.37
1976 33.06 31.66 32.87 36.00 40.68 44.27 50.03 51.74 49.17 40.35 37.07 a 30.74 39.80
1977 28.39 34.64 34.13 37.50 40.07 a 47.47 49.26 53.61 47.40 41.90 35.60 36.74 40.56
1978 36.55 38.04 38.03 39.57 42.40 a 49.97 50.97 51.48 49.30 41.35 31.33 28.29 41.44
1979 24.29 34.57 37.65 39.77 44.29 46.77 51.68 50.81 50.47 45.71 35.23 36.26 41.46
1980 28.03 35.31 35.77 39.53 42.16 46.37 50.68 47.03 47.10 41.16 38.23 35.87 40.60
1981 33.87 34.46 35.52 39.20 42.97 46.87 50.00 52.29 46.97 40.84 38.17 36.61 41.48
1982 30.58 32.43 34.06 33.87 41.23 49.80 48.71 50.48 47.30 40.84 32.10 31.84 39.44
1983 34.35 36.93 38.48 36.27 42.52 45.43 51.10 52.03 45.87 41.00 40.20 30.06 41.19
1984 33.61 35.00 39.03 38.07 41.90 45.33 49.13 48.74 45.77 40.39 36.17 29.03 40.18
1985 26.48 29.86 32.39 40.07 41.29 47.57 51.29 49.03 44.57 39.94 29.30 24.48 38.02
1986 34.03 36.11 38.29 37.13 41.39 49.33 48.19 50.23 44.73 40.87 37.47 30.71 40.71
1987 30.71 34.32 35.58 37.33 43.45 47.90 51.29 51.06 48.10 43.00 38.97 32.61 41.19
1988 31.61 33.17 35.10 39.37 42.10 46.63 50.29 49.61 45.97 46.03 38.87 32.23 40.91
1989 33.00 25.32 35.26 41.13 42.61 48.87 50.10 50.74 48.43 40.10 37.50 32.42 40.46
1990 34.10 30.71 35.42 40.20 41.48 48.63 52.32 52.77 50.50 38.19 36.57 24.45 40.45
1991 28.87 38.50 32.65 37.73 40.77 44.53 50.13 50.68 48.27 40.06 37.80 33.74 40.31
1992 34.84 36.97 37.19 41.90 45.10 48.33 51.32 49.19 45.27 41.23 37.50 33.52 41.86
1993 29.32 31.64 39.00 41.20 47.61 49.23 50.26 52.90 46.10 41.65 28.90 31.48 40.78
1994 34.71 31.29 35.74 38.80 44.35 46.00 49.97 48.68 50.83 40.71 33.53 35.00 40.80
1995 36.97 38.36 36.16 38.10 45.29 48.83 53.74 49.29 51.87 40.52 42.30 35.45 43.07
1996 35.61 33.03 36.19 40.40 40.74 46.03 52.48 51.00 45.80 40.13 35.40 33.97 40.90
1997 32.52 32.18 35.23 37.00 45.35 46.67 50.32 51.39 48.70 40.29 37.47 31.29 40.70
1998 36.23 35.79 37.23 36.90 44.87 48.43 54.00 51.68 48.50 40.68 38.90 32.94 42.18
1999 36.35 35.32 35.10 37.20 41.16 47.17 49.71 53.35 45.60 39.94 40.60 34.55 41.34
2000 32.52 34.97 33.48 39.40 44.19 48.47 50.58 49.65 48.03 41.03 32.63 33.16 40.68
2001 32.45 31.61 36.77 36.77 42.90 46.33 49.26 50.23 46.27 40.39 40.43 35.35 40.73
2002 35.61 33.71 33.65 39.13 42.06 48.07 52.10 ----- z 47.97 39.77 36.63 36.39 40.46
2003 37.74 33.64 40.39 39.00 43.29 50.23 51.81 51.61 48.70 45.10 34.77 36.13 42.70
2004 33.97 35.55 38.45 39.67 45.71 49.83 53.00 53.68 48.77 44.29 35.90 36.48 42.94
2005 34.61 31.89 38.03 39.90 47.16 48.30 53.19 50.77 45.40 43.29 33.50 32.26 41.53
2006 37.06 30.79 34.84 38.57 43.84 51.70 52.94 49.97 46.60 39.23 37.50 32.48 41.29
2007 29.61 35.61 37.52 37.03 42.39 46.40 54.45 51.84 46.53 40.65 34.03 32.90 40.75
2008 29.06 31.90 32.13 34.20 43.90 44.17 49.16 49.68 43.20 36.48 35.67 25.94 37.96
2009 27.19 27.57 28.48 32.13 37.77 45.00 47.58 44.58 41.17 33.06 28.00 20.45 34.42
2010 29.94 28.43 35.06 37.60 42.26 47.43 49.94 49.26 48.67 42.42 36.53 35.68 40.27
2011 34.00 30.86 36.32 35.23 40.23 46.67 49.39 50.53 a 48.93 42.39 33.00 28.48 39.67
2012 30.97 31.79 31.97 38.28 e 40.35 44.08 f 48.94 48.94 44.83 40.35 37.17 32.65 38.75
2013 26.94 30.74 a 34.00 o ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 28.84
Period of Record Statistics
MEAN 32.34 33.28 35.55 37.79 42.47 47.47 50.56 50.44 47.31 40.90 36.22 32.51 40.58
S.D. 3.23 2.70 2.39 2.13 2.01 1.75 1.79 2.07 2.23 2.28 3.03 3.55 1.40
SKEW -0.40 -0.33 -0.14 -0.48 0.46 0.16 0.25 -1.08 -0.12 -0.27 -0.70 -1.23 -1.87
MAX 37.74 38.50 40.84 41.90 47.61 51.70 54.45 53.68 52.07 46.03 42.30 36.74 43.07
MIN 24.29 25.32 28.48 32.13 37.77 44.17 47.16 43.68 41.17 33.06 28.00 20.45 34.42
NO YRS 50 50 49 49 49 49 50 49 50 50 50 50 47