RICHLAND, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(357160)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201110
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
1893 17.45 21.57 28.84 ----- z 40.17 a 46.00 53.13 a 54.94 44.90 36.93 q 28.43 29.45 36.49
1894 28.16 21.86 32.26 36.50 43.84 45.70 56.26 54.94 ----- z ----- z ----- z ----- z 39.94
1895 ----- z ----- z ----- z 34.27 40.42 46.67 51.19 52.93 b 38.93 39.10 30.67 23.52 39.74
1896 24.87 24.69 29.74 34.43 40.23 49.70 57.06 54.10 42.87 36.84 26.23 ----- z 38.25
1897 ----- z ----- z 23.97 b ----- z ----- z 34.71 b 44.29 47.81 39.53 30.62 b 27.13 23.68 33.97
1898 11.74 24.29 23.35 32.20 40.92 e 46.57 47.39 47.90 36.83 g ----- z ----- z ----- z 34.30
1899 24.23 16.64 28.32 30.50 34.87 42.40 46.29 43.10 38.50 28.68 27.10 12.87 31.12
1900 20.13 17.36 24.81 26.93 36.16 43.77 43.60 a 41.71 35.70 26.68 f 21.07 24.87 30.55
1901 19.06 21.07 25.70 a 28.27 40.16 40.87 49.16 51.16 38.03 34.03 30.40 y ----- z 34.75
1902 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1903 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1904 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1905 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 24.70 h 22.46 b 20.52 b 21.49
1906 17.78 d 26.96 22.48 33.66 a 38.55 38.50 54.00 b 48.30 a 38.93 ----- z 24.48 a 29.84 33.95
1907 18.45 29.39 e 31.81 31.38 v 42.61 48.63 51.79 c 47.58 42.33 38.81 26.37 24.74 36.59
1908 24.75 g 32.96 d 28.26 37.08 f 40.10 48.54 d 52.43 c 50.00 g 43.27 h 34.23 30.40 j 20.06 36.65
1909 23.61 29.32 27.08 g 30.03 37.09 i 47.24 e 47.75 w 49.66 b 44.63 33.35 32.67 17.26 34.20
1910 14.16 17.46 32.45 36.93 41.45 46.33 53.23 44.77 43.00 33.10 30.10 a 27.74 35.06
1911 22.33 a 19.21 26.58 30.73 37.00 49.20 51.39 h 45.52 b 39.60 30.35 25.77 18.97 a 31.39
1912 16.50 a 27.31 25.77 34.47 39.87 a 48.24 a 49.87 48.93 a 37.03 30.03 a 27.48 e 19.47 a 33.75
1913 18.43 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z 37.53 o 32.32 33.43 17.90 25.52
1914 ----- z 24.85 b 30.41 b 36.74 c 42.41 d 45.07 a ----- z 49.25 c ----- z ----- z ----- z 11.16 f 38.12
1915 17.33 a 30.82 30.68 c 37.07 40.06 43.81 d 51.74 56.20 a 40.07 a 30.77 26.33 20.84 35.48
1916 12.61 25.59 31.61 35.63 36.23 44.03 52.83 a 49.16 41.27 29.39 23.04 c 11.96 h 34.67
1917 10.55 17.54 20.29 33.90 38.87 43.43 54.06 50.61 45.97 33.03 27.87 31.70 a 33.99
1918 24.71 25.32 31.65 31.07 37.13 53.40 52.16 47.68 44.87 37.26 23.77 19.81 35.73
1919 16.56 f 27.11 30.77 33.43 40.84 47.07 51.03 52.13 42.43 29.19 25.03 11.03 35.46
1920 14.52 24.48 31.32 34.18 b 38.39 44.79 a 54.80 a 50.06 41.63 33.16 26.57 27.45 35.11
1921 ----- z ----- z 30.23 a 32.63 42.06 50.60 51.52 50.90 a 38.67 35.03 30.40 23.77 38.58
1922 10.00 20.21 26.58 ----- z ----- z 50.44 e 55.68 53.81 42.87 36.74 22.20 20.32 33.88
1923 ----- z ----- z ----- z ----- z 38.33 d ----- z ----- z ----- z ----- z ----- z ----- z ----- z 38.33
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1934 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1935 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
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 30.23 20.71 25.47
1945 24.52 27.68 28.77 33.04 g 41.10 44.30 51.23 46.80 a 41.57 32.64 c 28.03 20.58 35.20
1946 18.87 22.18 30.26 34.10 39.71 45.80 52.10 47.71 38.50 27.67 a 27.80 24.87 34.13
1947 13.94 27.64 29.45 32.10 46.48 44.60 51.74 46.81 41.17 38.39 28.50 22.48 35.27
1948 ----- z ----- z ----- z ----- z ----- z ----- z 49.29 46.94 42.23 36.30 k 28.47 12.61 35.91
1949 -4.81 ----- z 31.55 29.73 43.26 44.23 45.84 50.81 42.37 28.53 a 29.50 20.94 32.90
1950 ----- z 24.96 29.77 a 34.00 35.13 43.31 d 46.84 47.84 40.57 37.35 29.87 27.97 36.15
1951 ----- z ----- z 25.52 31.67 42.97 45.03 52.58 50.32 41.60 30.39 27.33 20.03 36.74
1952 16.81 21.55 24.42 31.33 43.83 a 46.60 57.68 51.60 a 42.90 32.81 16.70 27.19 34.45
1953 34.20 k 26.68 33.84 ----- z 39.30 h 43.93 53.74 51.68 38.17 22.94 24.52 g 11.90 35.36
1954 17.32 25.96 16.00 v 31.50 36.03 ----- z 57.80 a 46.97 38.07 28.26 23.04 c 18.84 32.38
1955 17.13 14.25 21.20 a 32.37 40.32 42.43 51.58 47.29 36.40 27.61 24.89 b 27.74 31.94
1956 25.33 a 18.90 28.16 30.26 g 43.55 ----- z 55.68 49.00 41.89 b 35.32 22.08 e 20.71 34.06
1957 5.81 24.75 30.32 ----- z 41.58 44.83 48.84 47.74 42.33 28.30 a 15.26 k ----- z 34.95
1958 ----- z 31.00 27.17 a 32.60 43.97 50.90 55.58 53.19 39.63 36.10 29.04 e ----- z 39.92
1959 27.19 27.07 26.74 31.37 33.94 47.67 f 49.48 49.46 e 42.83 36.42 20.97 18.32 33.07
1960 15.14 j 24.21 34.97 30.97 34.04 e 44.07 57.94 48.48 41.43 32.10 28.03 20.47 a 36.06
1961 24.29 29.46 28.74 32.57 38.48 50.86 b 53.34 b 58.84 38.93 32.97 22.18 m 25.32 37.62
1962 13.35 22.46 28.94 38.87 42.00 46.63 51.35 50.10 40.80 35.48 28.67 i 25.90 35.99
1963 10.48 28.75 27.94 34.14 h 43.03 47.40 53.23 53.87 50.20 41.06 31.21 f 22.04 d 37.80
1964 22.81 19.03 31.16 27.63 37.00 45.60 52.35 50.00 38.93 34.97 25.47 25.74 34.23
1965 28.16 26.29 25.26 37.33 41.87 a 48.63 53.94 54.23 40.87 32.26 28.77 22.29 36.66
1966 27.55 25.61 34.35 32.83 36.39 49.83 52.97 56.35 49.97 32.04 g 31.17 26.57 a 38.51
1967 26.84 25.61 26.39 27.26 k 38.00 49.75 f 56.65 56.23 46.40 34.13 a 28.43 18.55 35.72
1968 21.06 33.14 33.32 30.93 38.23 49.44 e 54.48 f 52.06 44.10 32.39 31.30 22.90 35.35
1969 24.03 24.64 27.19 34.37 43.65 49.70 50.94 50.07 d 45.23 d 29.26 22.90 25.23 35.60
1970 25.48 26.46 30.03 33.73 40.26 52.13 55.55 52.61 37.07 a 29.35 28.87 22.19 36.15
1971 24.94 26.82 26.48 31.37 41.13 46.68 e 54.65 56.16 35.50 31.26 26.67 20.42 35.17
1972 22.81 22.34 30.58 29.90 41.48 48.87 51.13 51.81 39.60 33.48 29.20 13.29 g 36.47
1973 24.68 29.32 31.35 33.62 a 40.19 47.77 51.00 52.52 44.03 32.23 30.30 26.90 36.99
1974 15.94 26.14 28.23 35.57 37.84 51.10 51.77 47.52 40.63 31.58 26.73 21.32 34.53
1975 16.90 23.64 26.16 31.47 40.13 46.20 56.00 50.29 41.50 38.63 a 24.27 24.52 34.98
1976 22.81 23.45 25.84 31.43 39.81 45.97 54.94 50.06 45.87 33.65 25.83 15.37 a 34.58
1977 11.00 n ----- z ----- z 34.37 39.81 52.77 52.74 53.39 46.17 a 35.58 27.03 29.16 41.22
1978 27.84 31.25 34.68 35.80 40.61 45.10 54.84 48.55 43.10 31.19 24.53 14.94 36.04
1979 0.68 23.36 30.87 35.83 42.81 48.37 54.06 54.61 45.07 39.35 21.27 26.52 35.23
1980 23.35 29.93 29.42 34.83 43.29 45.00 54.16 ----- z ----- z ----- z ----- z ----- z 37.14
1981 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1982 ----- z ----- z 28.45 30.93 39.19 48.57 51.84 50.87 46.03 35.39 ----- z 21.52 39.20
1983 28.90 a 28.89 37.06 36.43 44.59 d 46.53 38.26 ----- z 39.40 37.48 31.03 18.73 a 35.21
1984 16.71 19.59 34.19 44.97 ----- z ----- z ----- z ----- z ----- z 35.61 29.67 ----- z 30.12
1985 ----- z 20.79 30.81 48.00 55.68 ----- z ----- z ----- z 64.20 32.90 ----- z ----- z 42.06
1986 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 52.84 40.13 31.32 27.63 20.27 a 34.44
1987 16.68 24.64 28.97 35.93 43.58 49.47 51.71 47.39 39.30 30.10 27.07 23.39 34.85
1988 17.58 23.24 26.42 34.70 39.26 51.00 52.77 47.23 38.70 38.65 30.40 16.13 34.67
1989 10.68 5.32 29.39 35.30 39.06 49.40 53.10 51.26 40.87 34.29 26.83 20.13 32.97
1990 25.81 21.96 28.13 37.27 40.10 46.43 53.68 54.06 46.17 31.77 24.23 10.29 34.99
1991 13.19 26.86 28.42 33.20 37.06 45.17 52.87 53.16 40.67 32.32 27.47 22.13 34.38
1992 22.97 30.41 31.97 36.43 41.94 50.97 51.58 49.68 40.23 34.94 26.40 18.39 36.32
1993 13.00 18.79 29.74 32.90 44.94 46.50 47.23 51.42 l ----- z 31.26 l 16.10 23.39 30.29
1994 25.90 21.75 26.87 35.80 43.90 47.53 54.03 52.55 43.50 32.55 23.27 21.06 35.73
1995 25.32 28.04 30.87 31.87 41.19 47.30 54.16 48.29 43.60 30.19 29.80 25.26 36.32
1996 24.06 23.62 28.52 34.30 40.23 45.30 53.90 51.35 41.10 32.42 26.30 25.61 35.56
1997 23.13 25.14 28.68 ----- z ----- z 47.63 51.58 ----- z ----- z 31.06 27.00 ----- z 33.46
1998 ----- z 28.29 29.61 33.77 42.48 44.90 56.42 ----- z ----- z ----- z ----- z ----- z 39.24
1999 26.61 24.71 27.26 30.10 38.55 ----- z 50.16 49.10 40.77 ----- z 26.90 ----- z 34.91
2000 24.97 b 29.14 a 26.67 d 33.45 s ----- z 49.43 64.06 ----- z 41.17 30.35 22.67 23.13 34.62
2001 16.84 ----- z 28.48 31.90 46.97 62.43 54.87 56.94 ----- z 30.77 30.59 a ----- z 39.98
2002 18.74 25.93 ----- z ----- z 47.87 a 44.60 ----- z ----- z ----- z 27.39 22.70 27.97 30.74
2003 27.10 26.75 29.90 32.03 ----- z 51.87 61.52 52.32 42.13 36.39 21.97 25.26 37.02
2004 19.06 21.95 h 30.23 33.13 42.35 49.00 56.00 54.77 44.07 36.48 27.73 24.97 37.98
2005 22.87 21.89 29.00 33.63 43.71 47.00 54.16 51.58 40.80 34.06 25.53 17.77 35.17
2006 26.52 21.82 28.32 35.53 40.00 50.30 59.71 49.81 42.60 31.06 30.63 20.19 36.38
2007 15.06 25.93 29.94 33.70 41.32 49.53 58.81 51.32 42.47 31.74 24.10 23.35 35.61
2008 18.29 24.97 24.97 29.63 41.71 46.17 53.48 51.39 40.63 31.29 27.93 19.58 34.17
2009 19.52 21.00 26.19 32.77 38.84 48.40 54.84 53.42 44.17 31.32 24.30 15.39 34.18
2010 27.48 28.39 26.61 32.00 36.94 47.90 52.29 51.65 43.40 38.16 25.63 23.65 36.18
2011 20.93 a 21.82 30.13 a 29.76 a 37.29 46.33 51.39 53.16 44.20 34.39 ----- z ----- z 36.94
Period of Record Statistics
MEAN 19.74 24.50 28.84 33.52 40.63 47.12 52.79 50.73 41.97 33.05 26.58 21.88 34.96
S.D. 6.51 4.48 3.05 3.25 3.31 3.53 3.78 3.21 3.83 3.37 3.32 4.51 1.22
SKEW -1.12 -1.04 -0.13 1.56 1.04 0.39 -0.55 -0.06 2.52 0.01 -0.64 -0.39 -1.07
MAX 28.90 33.14 37.06 48.00 55.68 62.43 64.06 58.84 64.20 41.06 33.43 31.70 36.99
MIN -4.81 5.32 20.29 26.93 33.94 34.71 38.26 41.71 35.50 22.94 16.10 10.29 31.12
NO YRS 75 80 84 75 82 82 83 81 80 80 79 77 37