RIVERSIDE, OREGON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(357208)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201210
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
1897 ----- z ----- z ----- z ----- z ----- z 36.00 g 34.00 40.00 26.00 d 13.00 0.00 9.00 0.00
1898 -19.00 4.00 1.00 20.00 a 23.00 f 25.00 31.00 39.00 21.00 m 14.00 16.00 t -8.00 -19.00
1899 3.00 f -13.00 16.00 18.00 a 19.00 20.00 n 28.00 16.00 a 15.00 -2.00 5.00 -21.00 a -21.00
1900 ----- z 12.00 f 19.00 19.00 a 30.00 a 31.00 27.00 a 31.00 27.00 h 17.00 m -3.00 l 19.00 h -3.00
1901 10.00 i -5.00 a 13.00 20.00 28.00 22.00 a 30.00 d 37.00 25.00 a 26.00 e 12.00 a 8.00 -5.00
1902 -12.00 c 0.00 o 16.00 q 20.00 b 26.00 i 34.00 m 33.00 30.00 21.00 x 11.00 i 11.00 -6.00 n -12.00
1903 -5.00 b -12.00 12.00 c 15.00 d 24.00 f 42.00 n 35.00 p 39.00 q 32.00 z 30.00 s 28.00 o 20.00 d -12.00
1904 10.00 a 30.00 z 12.00 b 23.00 22.00 22.00 a 33.00 29.00 28.00 20.00 a 13.00 0.00 b 0.00
1905 -2.00 -20.00 12.00 16.00 19.00 32.00 34.00 36.00 25.00 10.00 p 6.00 -8.00 -20.00
1906 -8.00 9.00 -17.00 20.00 26.00 k 29.00 a ----- z 35.00 f 24.00 c 12.00 p -6.00 m 4.00 k -17.00
1907 -4.00 e 18.00 d 19.00 d 15.00 d 20.00 a 31.00 g 23.00 e ----- z 25.00 e 24.00 e 11.00 8.00 m -4.00
1908 4.00 9.00 9.00 d 18.00 20.00 30.00 a ----- z ----- z 15.00 18.00 10.00 -12.00 c -12.00
1909 2.00 c 9.00 16.00 15.00 10.00 d 30.00 b 33.00 a 38.00 c ----- z 18.00 b 9.00 c -10.00 -10.00
1910 -32.00 d ----- z 20.00 19.00 c 24.00 30.00 44.00 25.00 a 25.00 b 12.00 d 5.00 a 8.00 -32.00
1911 -5.00 a -9.00 1.00 9.00 20.00 28.00 25.00 c ----- z 18.00 9.00 a -1.00 -2.00 -9.00
1912 -21.00 a 9.00 a 10.00 20.00 25.00 a 29.00 40.00 q 24.00 20.00 15.00 9.00 b -1.00 -21.00
1913 -13.00 1.00 9.00 16.00 19.00 30.00 35.00 46.00 w 21.00 19.00 15.00 -10.00 -13.00
1914 -1.00 a 6.00 22.00 20.00 27.00 27.00 38.00 37.00 22.00 21.00 6.00 o ----- z -1.00
1915 -14.00 18.00 23.00 24.00 26.00 29.00 37.00 46.00 25.00 d 15.00 6.00 -2.00 -14.00
1916 -20.00 b 20.00 15.00 a 20.00 15.00 29.00 35.00 g 24.00 b 24.00 12.00 -9.00 a -1.00 -20.00
1917 -14.00 -1.00 4.00 ----- z 18.00 24.00 45.00 38.00 d 28.00 10.00 9.00 15.00 m -14.00
1918 ----- z 4.00 a 11.00 14.00 o 20.00 28.00 38.00 a 36.00 35.00 19.00 8.00 -10.00 -10.00
1919 -16.00 10.00 16.00 23.00 20.00 26.00 38.00 40.00 30.00 a 5.00 -5.00 o -20.00 -20.00
1920 -10.00 a 11.00 15.00 12.00 21.00 26.00 43.00 31.00 a 29.00 14.00 9.00 a 1.00 -10.00
1921 -5.00 -2.00 21.00 18.00 21.00 40.00 34.00 40.00 20.00 19.00 10.00 -2.00 -5.00
1922 -37.00 -7.00 -12.00 15.00 19.00 34.00 43.00 42.00 26.00 15.00 9.00 -10.00 -37.00
1923 -12.00 -19.00 9.00 21.00 27.00 36.00 40.00 43.00 g 27.00 18.00 12.00 -2.00 -19.00
1924 -10.00 20.00 9.00 14.00 23.00 31.00 a 39.00 35.00 a 22.00 17.00 15.00 f -53.00 f -53.00
1925 2.00 a 19.00 12.00 23.00 26.00 31.00 43.00 30.00 26.00 19.00 ----- z ----- z 2.00
1926 ----- z ----- z ----- z 15.00 a 21.00 32.00 a 43.00 37.00 10.00 10.00 10.00 b -5.00 k -5.00
1927 -6.00 b 17.00 e 15.00 15.00 25.00 33.00 a 36.00 30.00 25.00 10.00 14.00 e 0.00 b -6.00
1928 6.00 3.00 20.00 17.00 b 19.00 33.00 42.00 c 40.00 x 28.00 h 23.00 n 7.00 b -11.00 a -11.00
1929 -13.00 -19.00 13.00 10.00 21.00 b 28.00 b 40.00 40.00 f 18.00 15.00 -6.00 0.00 -19.00
1930 -44.00 14.00 20.00 21.00 26.00 28.00 40.00 37.00 28.00 10.00 2.00 -7.00 -44.00
1931 0.00 14.00 13.00 14.00 i 25.00 d 30.00 35.00 36.00 21.00 12.00 -4.00 -20.00 -20.00
1932 -5.00 -15.00 16.00 15.00 25.00 30.00 a 35.00 29.00 28.00 12.00 13.00 -22.00 -22.00
1933 -10.00 -36.00 15.00 11.00 25.00 40.00 41.00 34.00 21.00 12.00 9.00 9.00 -36.00
1934 14.00 ----- z ----- z 20.00 26.00 36.00 40.00 40.00 18.00 25.00 15.00 9.00 9.00
1935 -7.00 a 0.00 14.00 20.00 22.00 28.00 43.00 35.00 24.00 10.00 -4.00 -2.00 -7.00
1936 -11.00 -11.00 15.00 19.00 29.00 39.00 43.00 38.00 25.00 14.00 -2.00 a -8.00 -11.00
1937 -32.00 a -13.00 15.00 k 18.00 i 20.00 e ----- z ----- z 34.00 a 25.00 j 25.00 16.00 f 15.00 -32.00
1938 13.00 10.00 7.00 b 15.00 f 17.00 28.00 e 40.00 35.00 j 34.00 20.00 3.00 3.00 3.00
1939 8.00 -3.00 11.00 h 15.00 26.00 f 25.00 42.00 34.00 25.00 18.00 ----- z 4.00 -3.00
1940 8.00 18.00 l 15.00 24.00 25.00 28.00 40.00 38.00 36.00 20.00 6.00 a -9.00 -9.00
1941 5.00 d 18.00 h 16.00 11.00 25.00 30.00 ----- z ----- z 24.00 16.00 k 3.00 4.00 k 3.00
1942 -13.00 0.00 10.00 16.00 20.00 ----- z 35.00 29.00 25.00 d 9.00 11.00 g 10.00 -13.00
1943 -15.00 5.00 y 12.00 j ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z -15.00
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 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1964 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1965 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1966 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 18.00 f 19.00 d -5.00 b -5.00
1967 16.00 b 14.00 11.00 21.00 a 25.00 35.00 b 46.00 b 42.00 a 31.00 22.00 d 13.00 a -9.00 -9.00
1968 2.00 15.00 15.00 14.00 a 25.00 a 38.00 42.00 38.00 a 27.00 19.00 18.00 a 4.00 2.00
1969 -7.00 5.00 a 13.00 20.00 25.00 40.00 43.00 39.00 33.00 13.00 9.00 8.00 -7.00
1970 2.00 18.00 a 17.00 16.00 b 23.00 35.00 41.00 41.00 23.00 15.00 20.00 e -2.00 -2.00
1971 0.00 12.00 6.00 20.00 26.00 37.00 40.00 37.00 26.00 a 5.00 7.00 9.00 a 0.00
1972 -10.00 -12.00 14.00 16.00 a 25.00 36.00 41.00 42.00 c 25.00 12.00 17.00 a -27.00 -27.00
1973 5.00 10.00 17.00 18.00 26.00 29.00 40.00 42.00 d 32.00 20.00 10.00 14.00 5.00
1974 -10.00 a 15.00 12.00 a 19.00 24.00 b 32.00 a 42.00 40.00 33.00 20.00 14.00 0.00 -10.00
1975 -3.00 13.00 10.00 18.00 24.00 38.00 43.00 38.00 33.00 19.00 a 6.00 0.00 -3.00
1976 6.00 1.00 2.00 13.00 30.00 a 28.00 42.00 b 41.00 34.00 16.00 3.00 1.00 a 1.00
1977 -18.00 5.00 13.00 a 20.00 23.00 39.00 a 36.00 b 40.00 g 26.00 23.00 -1.00 b 8.00 -18.00
1978 1.00 15.00 18.00 20.00 26.00 33.00 43.00 35.00 25.00 12.00 -1.00 -14.00 -14.00
1979 -25.00 -20.00 17.00 20.00 27.00 32.00 37.00 46.00 35.00 26.00 12.00 d 13.00 c -25.00
1980 -8.00 15.00 17.00 19.00 33.00 30.00 42.00 34.00 29.00 15.00 12.00 2.00 -8.00
1981 19.00 12.00 b 17.00 17.00 26.00 32.00 32.00 37.00 26.00 16.00 13.00 3.00 3.00
1982 -18.00 2.00 17.00 17.00 20.00 30.00 40.00 39.00 29.00 11.00 7.00 -8.00 -18.00
1983 -1.00 13.00 20.00 18.00 26.00 32.00 36.00 42.00 22.00 22.00 17.00 -14.00 -14.00
1984 -23.00 14.00 18.00 20.00 25.00 26.00 40.00 39.00 19.00 15.00 ----- z -8.00 -23.00
1985 4.00 -24.00 11.00 20.00 23.00 35.00 42.00 42.00 20.00 12.00 -5.00 -16.00 -24.00
1986 5.00 12.00 22.00 22.00 24.00 37.00 31.00 46.00 28.00 18.00 10.00 3.00 3.00
1987 -11.00 11.00 15.00 19.00 26.00 33.00 37.00 37.00 25.00 16.00 5.00 a 5.00 -11.00
1988 -15.00 a 2.00 13.00 16.00 27.00 38.00 37.00 35.00 27.00 20.00 15.00 -10.00 -15.00
1989 -2.00 -13.00 18.00 27.00 24.00 34.00 42.00 34.00 29.00 12.00 10.00 3.00 -13.00
1990 7.00 2.00 15.00 25.00 23.00 35.00 37.00 42.00 34.00 16.00 15.00 -32.00 -32.00
1991 -9.00 13.00 18.00 22.00 32.00 35.00 45.00 42.00 k ----- z ----- z ----- z ----- z -9.00
1992 ----- z ----- z ----- z ----- z 20.00 32.00 38.00 25.00 b 21.00 13.00 9.00 -17.00 -17.00
1993 -2.00 -12.00 -10.00 23.00 26.00 29.00 32.00 29.00 16.00 20.00 -8.00 5.00 -12.00
1994 5.00 -2.00 11.00 18.00 23.00 26.00 38.00 35.00 28.00 10.00 2.00 -2.00 -2.00
1995 5.00 14.00 15.00 18.00 27.00 33.00 34.00 28.00 21.00 12.00 -5.00 10.00 -5.00
1996 6.00 -18.00 12.00 18.00 15.00 22.00 34.00 32.00 23.00 2.00 15.00 8.00 -18.00
1997 1.00 1.00 11.00 8.00 16.00 29.00 34.00 34.00 27.00 11.00 9.00 4.00 1.00
1998 16.00 17.00 12.00 20.00 27.00 29.00 44.00 ----- z ----- z ----- z ----- z ----- z 12.00
1999 3.00 c -5.00 i 15.00 a 11.00 a 14.00 a 29.00 b 33.00 b 31.00 16.00 b ----- z 6.00 6.00 c -5.00
2000 6.00 g 15.00 e 12.00 c 19.00 c 27.00 b 31.00 a 31.00 a 33.00 a 16.00 e 17.00 a 7.00 k 11.00 h 6.00
2001 -5.00 j -1.00 k 17.00 d 11.00 d 19.00 b 26.00 b 35.00 36.00 23.00 d 14.00 c 5.00 a 11.00 g -5.00
2002 5.00 6.00 9.00 14.00 15.00 a 27.00 c 40.00 a 33.00 e 23.00 -4.00 c 6.00 k 9.00 -4.00
2003 16.00 4.00 13.00 16.00 20.00 e 32.00 40.00 d 36.00 e 23.00 18.00 n 8.00 l 10.00 4.00
2004 -10.00 9.00 18.00 i 20.00 25.00 c 30.00 37.00 37.00 23.00 d 18.00 h 10.00 j 12.00 f -10.00
2005 6.00 9.00 d 10.00 j 15.00 29.00 28.00 35.00 30.00 17.00 d 19.00 j 9.00 h -7.00 -7.00
2006 18.00 i ----- z 9.00 e 18.00 18.00 34.00 42.00 28.00 21.00 g 3.00 q 13.00 q 1.00 k 1.00
2007 -2.00 d 5.00 e 15.00 h 13.00 f 20.00 c 32.00 42.00 34.00 23.00 e ----- z 9.00 k 3.00 k -2.00
2008 -14.00 l 9.00 h 13.00 f 9.00 12.00 29.00 34.00 32.00 25.00 ----- z 15.00 h -15.00 j -15.00
2009 8.00 e 3.00 m 9.00 g 13.00 f 21.00 f 32.00 37.00 32.00 22.00 d 14.00 l 6.00 g -6.00 i -6.00
2010 12.00 i 12.00 e 15.00 e 12.00 l 20.00 h 31.00 32.00 31.00 26.00 g 24.00 z -4.00 t -2.00 -4.00
2011 -2.00 g 0.00 d 22.00 e 22.00 w 18.00 p 28.00 n 37.00 h 38.00 g 28.00 n 12.00 w 8.00 k -8.00 n -8.00
2012 -2.00 h 8.00 j 9.00 k 12.00 n 21.00 e 28.00 e 35.00 f 32.00 f 28.00 z 17.00 y ----- z ----- z -2.00
Period of Record Statistics
MEAN -4.81 3.29 12.85 17.71 22.92 31.01 37.73 35.25 24.82 15.03 7.51 -2.08 -12.24
S.D. 12.37 12.38 6.94 3.86 4.36 4.20 4.82 5.54 5.24 5.85 6.77 10.41 12.45
SKEW -0.64 -0.88 -2.04 -0.40 -0.46 0.22 -0.67 -0.61 -0.08 -0.68 -0.55 -0.51 -0.82
MAX 19.00 20.00 23.00 27.00 33.00 40.00 46.00 46.00 36.00 26.00 20.00 20.00 5.00
MIN -44.00 -36.00 -17.00 8.00 10.00 22.00 23.00 16.00 10.00 -4.00 -9.00 -32.00 -44.00
NO YRS 79 76 79 80 83 84 83 76 79 72 67 72 33