RIVERSIDE, OREGON

Monthly Average Maximum 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 76.09 g 86.39 94.71 78.41 c 65.16 55.07 44.29 70.67
1898 33.26 47.75 51.68 72.00 a 71.25 g 82.27 93.06 94.48 81.37 61.52 43.10 t 34.16 65.15
1899 43.81 e 41.36 50.52 60.00 65.48 80.25 n 94.16 84.23 83.60 60.77 53.73 28.23 a 60.54
1900 42.76 b 47.77 f 61.32 63.77 71.21 c 86.27 90.10 83.00 a 76.59 h 60.83 m 48.06 l 42.18 i 71.20
1901 41.00 i 41.93 53.39 61.33 76.23 79.14 a 96.93 d 94.65 73.76 a 69.35 h 51.04 b 39.77 66.82
1902 36.50 c 42.88 k 49.68 i 60.82 b 67.26 h 83.94 m 88.84 90.42 86.00 x 72.57 h 50.90 48.12 n 65.50
1903 50.37 d 48.00 z ----- z ----- z 70.00 j 85.38 n 84.71 q 89.30 k 49.00 z 68.08 r 50.33 o 39.79 b 45.08
1904 43.42 46.41 b 50.00 a 69.68 b 79.06 88.23 95.74 97.23 84.83 70.87 58.93 40.81 68.77
1905 39.04 c 40.07 62.16 68.77 70.00 81.93 a 97.90 96.90 86.70 77.92 s 56.07 33.41 b 66.63
1906 39.64 q 40.68 46.39 68.21 a 73.00 h 79.79 a ----- z 95.31 e 83.82 b 64.69 r 46.38 i 42.92 e 65.30
1907 39.27 a 53.26 e 53.07 c 66.89 b 74.43 c 79.37 k 94.17 g ----- z 84.60 e 75.26 d 54.23 42.58 g 62.63
1908 40.97 48.28 51.81 73.18 b 70.83 b 81.59 c ----- z ----- z 86.31 a 78.00 56.65 d 28.48 61.61
1909 36.50 z ----- z ----- z ----- z 61.81 j 82.33 c 88.71 94.61 ----- z 65.79 c 50.15 j ----- z 82.86
1910 ----- z ----- z ----- z 78.88 f 83.81 89.97 98.77 92.48 d 79.03 a 81.16 50.62 a 36.31 b 76.52
1911 36.90 a 34.64 54.23 57.77 62.55 86.77 96.25 c ----- z 77.13 74.00 a 50.40 36.74 60.67
1912 37.10 44.64 a 56.23 62.46 b 68.94 86.37 98.36 q 90.84 75.13 65.13 50.00 a 38.68 61.41
1913 36.81 44.07 52.48 61.90 79.55 84.21 a 90.94 98.60 u 88.40 64.81 52.00 34.97 62.74
1914 39.84 42.46 60.06 65.97 79.06 81.90 94.26 95.68 80.03 69.45 60.40 o ----- z 70.87
1915 33.90 45.86 62.35 72.40 65.35 82.20 96.13 98.71 84.73 d 72.94 49.40 41.33 a 67.11
1916 31.00 44.48 59.47 a 72.17 67.74 81.13 92.46 g 93.76 b 84.80 68.90 50.50 37.94 62.90
1917 35.06 40.07 44.31 b ----- z 71.00 h 90.47 o 96.35 95.33 d 84.07 74.45 59.20 54.35 64.80
1918 49.03 41.86 55.55 57.47 o 78.68 93.03 92.93 a 87.77 83.00 69.65 48.43 36.48 66.95
1919 41.97 42.57 54.55 68.13 74.26 90.43 95.06 93.87 82.37 56.65 48.53 o 28.32 66.20
1920 37.81 49.00 50.97 58.77 76.16 80.17 92.29 92.87 80.63 59.61 46.30 38.81 63.62
1921 38.03 38.36 54.81 59.37 72.16 84.87 93.06 90.29 68.30 73.42 54.03 34.42 63.43
1922 18.23 35.00 r 45.00 z 61.06 n 70.00 87.60 92.87 88.06 84.03 69.00 45.37 34.52 65.52
1923 40.35 40.89 54.61 61.20 70.65 73.07 91.94 88.88 g 82.53 60.71 52.97 30.04 f 62.89
1924 32.81 49.34 49.10 64.40 78.68 79.93 a 89.29 86.73 a 74.67 63.26 47.57 g 25.86 i 66.82
1925 37.90 46.14 55.19 64.17 73.00 79.83 90.13 78.77 a 72.21 b 61.84 ----- z ----- z 65.92
1926 ----- z ----- z ----- z 65.64 b 69.85 d 84.63 94.14 b 89.26 70.43 69.30 a 53.76 a 34.37 a 70.15
1927 37.84 43.13 e 53.84 58.69 a 65.33 a 80.97 92.06 88.07 a 73.73 69.38 b 53.31 a 35.93 c 62.69
1928 36.03 40.59 54.87 61.71 b 81.00 75.79 a 92.68 88.55 i 84.10 70.91 t 49.68 b 31.39 60.78
1929 32.71 36.04 55.32 56.70 72.72 b 78.45 a 93.87 96.12 f 75.20 74.16 52.03 46.81 61.27
1930 24.84 49.39 57.16 71.00 68.61 82.23 94.13 91.97 79.57 66.45 48.40 33.48 63.94
1931 35.68 44.61 56.00 61.57 i 78.74 d 80.23 96.42 93.68 76.63 65.58 47.03 31.16 64.16
1932 35.03 37.48 50.48 63.43 70.71 83.27 88.03 87.29 82.70 66.39 50.83 32.26 62.33
1933 37.19 32.64 50.55 62.57 63.13 83.53 ----- z 89.16 80.83 75.52 53.00 48.48 61.51
1934 47.23 ----- z ----- z 73.13 79.45 77.80 94.32 95.90 79.13 68.58 55.17 36.29 70.70
1935 35.26 41.93 49.06 60.13 72.65 85.59 a 89.90 92.42 82.23 59.00 39.70 33.33 a 61.77
1936 34.32 37.17 46.48 68.90 79.10 84.10 95.71 91.29 79.77 74.45 52.07 41.19 65.38
1937 23.80 a 41.96 55.06 62.97 77.31 e ----- z 95.45 89.32 83.60 e ----- z 54.04 g 48.26 64.19
1938 43.94 45.21 49.71 66.44 e 72.74 86.12 e 90.19 85.57 j 87.60 67.26 42.53 42.20 a 63.09
1939 42.00 40.56 a 53.52 h 73.87 74.12 f 77.50 93.42 93.68 83.20 63.50 a 53.40 46.35 66.75
1940 37.39 48.53 l 58.13 62.50 78.94 89.70 91.71 95.77 a 72.03 68.03 44.10 39.94 67.11
1941 38.67 d 43.30 h 58.32 59.97 77.29 78.13 93.77 91.00 q 64.90 63.65 k 49.30 36.40 k 65.04
1942 30.65 38.29 49.90 65.93 67.74 76.32 b 96.33 a 92.52 78.54 d 70.58 49.61 g 41.39 64.38
1943 35.58 35.33 y 56.43 j ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.58
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 67.24 f 53.54 d 38.66 b 46.10
1967 45.60 a 51.46 53.03 53.93 a 73.61 80.86 b 95.41 b 96.70 a 86.50 67.70 d 51.59 a 38.71 66.26
1968 39.32 51.72 59.19 61.31 a 72.57 a 82.93 94.06 82.47 a 79.00 63.65 46.93 a 39.61 64.40
1969 38.16 38.11 a 50.74 64.87 77.32 79.30 91.13 92.00 81.73 60.06 53.57 41.74 64.06
1970 42.00 51.93 a 52.35 55.96 b 72.48 81.03 90.16 90.68 72.87 61.13 50.36 e 37.00 63.16
1971 42.90 48.36 49.10 61.80 71.45 75.37 88.48 91.29 73.48 a 62.52 48.60 38.63 a 62.67
1972 39.10 45.34 58.77 60.28 a 74.10 81.47 88.26 88.25 c 72.47 64.74 48.21 a 32.26 62.77
1973 36.32 47.04 52.74 61.83 74.06 81.13 90.39 86.74 d 75.90 64.81 46.93 42.97 63.41
1974 37.60 a 47.39 51.50 a 59.80 68.52 b 87.07 a 86.32 86.32 80.93 65.45 49.83 40.23 63.41
1975 38.94 44.11 48.87 52.73 68.90 76.17 88.58 81.84 80.43 63.33 a 47.60 42.16 61.14
1976 41.03 43.72 50.06 60.47 74.20 a 76.40 87.17 b 78.19 78.10 66.19 56.40 43.41 b 62.95
1977 31.23 49.86 52.30 a 69.97 64.65 87.52 a 89.38 b 89.50 g 76.43 67.26 49.00 b 43.68 61.93
1978 39.74 44.64 60.13 59.30 67.23 79.73 88.94 86.26 74.60 70.87 48.03 34.94 62.87
1979 25.35 43.11 54.42 61.03 72.16 82.77 91.55 85.29 84.00 66.61 48.42 d 41.79 b 63.04
1980 36.29 45.48 51.65 65.90 69.35 76.13 89.81 85.52 78.77 65.52 49.37 40.32 62.84
1981 38.13 45.19 b 56.00 64.03 67.97 79.10 88.94 92.74 80.10 61.87 50.43 41.97 63.87
1982 32.77 41.36 51.35 59.00 70.16 79.60 87.16 89.00 74.07 63.90 44.10 36.42 60.74
1983 42.61 47.14 53.00 57.30 70.74 77.40 86.68 89.16 78.50 66.42 48.87 32.84 62.56
1984 30.77 39.28 53.74 58.30 70.81 75.67 90.94 91.19 77.17 59.97 ----- z 33.90 61.98
1985 32.97 38.36 49.26 68.37 72.55 85.60 96.81 85.26 69.80 63.40 a 40.10 22.23 60.39
1986 36.26 47.89 60.48 62.80 72.94 89.00 86.65 91.84 70.33 67.23 51.47 35.03 64.33
1987 31.81 46.50 54.97 72.20 75.68 84.67 85.39 87.71 84.50 73.32 48.83 38.17 a 65.31
1988 33.61 49.17 57.94 66.13 73.90 83.97 93.03 89.26 79.90 77.10 48.00 35.19 65.60
1989 34.61 34.21 53.26 67.07 70.35 83.03 92.68 84.71 80.00 65.42 50.67 41.97 63.17
1990 43.35 46.14 59.00 71.70 70.81 83.53 95.19 90.03 87.43 66.03 50.93 30.26 66.20
1991 36.94 50.89 53.35 61.03 68.35 77.50 95.23 94.67 j ----- z ----- z ----- z ----- z 63.33
1992 ----- z ----- z ----- z ----- z 81.10 84.30 86.35 89.65 81.03 71.00 43.00 35.03 71.43
1993 29.13 33.07 48.71 58.57 75.06 74.90 78.55 82.39 81.40 66.16 46.83 40.26 59.59
1994 44.32 44.54 61.90 65.80 74.03 82.13 92.94 91.06 82.83 65.87 40.03 34.42 64.99
1995 40.29 53.61 52.39 59.10 68.77 76.47 87.81 88.13 81.70 65.00 54.23 38.45 63.83
1996 39.52 45.38 56.68 63.73 67.77 80.10 93.26 89.68 77.03 65.10 50.97 42.52 64.31
1997 39.74 45.00 59.48 61.83 77.55 78.63 87.06 89.48 79.87 65.81 51.80 38.94 64.60
1998 44.39 45.18 54.94 60.43 64.74 77.50 93.10 ----- z ----- z ----- z ----- z ----- z 62.90
1999 42.39 43.14 53.16 60.13 70.19 80.07 91.13 88.10 80.70 ----- z 55.00 39.45 63.95
2000 40.35 47.45 55.74 68.97 72.13 85.23 90.42 90.84 79.20 63.94 38.72 l 36.00 66.39
2001 33.10 j 39.72 j 57.23 61.13 78.26 82.33 88.71 93.58 83.60 69.39 51.93 37.68 70.38
2002 38.87 44.11 53.71 65.53 73.77 a 84.62 d 94.47 a 85.77 e 82.10 66.64 c 54.05 k 43.94 66.68
2003 44.42 46.82 58.13 59.87 72.38 e 85.63 96.04 e 91.31 e 83.77 78.06 o 46.00 l 43.48 68.19
2004 34.26 41.17 63.45 i 68.87 70.68 c 82.87 92.48 87.74 78.38 d 63.39 h 47.29 i 44.12 f 69.56
2005 39.87 50.78 e 58.67 j 62.17 69.97 78.07 94.52 92.52 80.24 e 70.29 j 49.09 h 32.45 66.73
2006 42.68 i ----- z 49.35 e 64.10 74.71 84.67 97.13 89.48 80.70 g 68.67 p 49.85 q 35.68 l 76.57
2007 40.87 49.13 e 61.79 g 66.57 g 78.44 d 86.13 98.77 91.71 79.39 g 63.08 s 51.33 i 39.05 k 74.18
2008 34.74 l 45.86 h 53.04 f 61.10 72.90 81.90 93.61 91.32 81.57 ----- z 52.61 g 39.81 j 80.40
2009 40.57 h 43.93 m 55.74 h 64.12 f 76.38 g 79.27 93.23 89.71 86.20 e 60.89 m 50.09 g 36.59 i 87.10
2010 42.23 i 44.87 e 56.69 e 62.65 m 64.65 h 80.20 92.77 88.68 81.78 g 69.20 z 43.64 s 36.84 66.68
2011 38.25 g 44.74 e 51.28 f 57.57 w 65.93 q 73.25 n 91.75 g 93.71 g 87.81 n 61.12 w 47.74 k 43.53 n 44.74
2012 44.65 h 48.16 j 56.80 k 67.50 n 74.92 e 81.80 e 95.27 e 94.80 f 89.75 z 55.83 y ----- z ----- z 84.00
Period of Record Statistics
MEAN 37.60 44.14 54.06 63.66 72.66 81.92 92.03 90.06 79.70 67.06 50.23 38.01 63.65
S.D. 5.50 4.70 4.00 4.80 4.52 4.03 3.61 4.19 4.86 4.91 4.12 5.26 1.85
SKEW -0.68 -0.32 0.10 0.32 0.08 0.26 -0.63 -0.50 -0.66 0.54 -0.45 0.05 0.34
MAX 50.37 53.61 62.35 73.87 83.81 93.03 98.77 98.71 88.40 81.16 59.20 54.35 68.77
MIN 18.23 32.64 44.31 52.73 62.55 73.07 78.55 78.19 64.90 56.65 39.70 22.23 59.59
NO YRS 79 75 75 78 81 84 84 77 81 70 67 75 36