FOREST GROVE, OREGON

Monthly Average Temperature (Degrees Fahrenheit)

(352997)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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 30.85 35.32 41.97 45.30 54.21 55.92 62.81 ----- z 55.56 u 46.77 a 42.40 41.56 45.71
1894 37.40 34.57 41.55 47.77 54.12 a 57.71 k ----- z ----- z ----- z 50.69 b 46.10 37.03 a 43.65
1895 35.29 42.08 d 43.56 50.43 54.79 ----- z ----- z ----- z ----- z 53.56 41.43 39.10 45.03
1896 39.52 43.67 43.50 46.10 51.77 60.13 ----- z ----- z 60.03 52.74 37.47 42.56 47.75
1897 38.05 42.23 40.31 53.88 60.82 60.87 ----- z ----- z 57.31 a 52.48 42.38 41.08 48.94
1898 36.37 43.39 42.53 51.02 55.08 ----- z ----- z ----- z ----- z 50.34 42.83 l 34.77 44.79
1899 39.10 35.96 41.47 a 47.33 50.27 ----- z ----- z ----- z ----- z 48.81 b 49.87 40.02 44.10
1900 40.52 39.16 49.89 50.40 55.23 62.65 m ----- z ----- z ----- z 49.76 43.30 42.39 46.33
1901 37.58 40.22 c 45.67 b 47.97 56.73 ----- z ----- z ----- z ----- z 58.21 46.70 40.21 46.66
1902 38.44 44.83 b 44.28 a 48.97 55.44 d ----- z ----- z ----- z ----- z 54.90 43.70 39.02 46.20
1903 40.63 38.57 42.79 46.73 55.27 63.17 63.13 63.53 58.72 52.97 43.90 43.00 51.03
1904 39.23 39.19 42.32 53.78 56.39 63.83 65.40 65.87 61.68 54.52 48.95 41.23 c 52.70
1905 37.95 a 43.84 ----- z 54.17 u 54.58 59.82 67.44 64.79 59.50 49.02 42.37 37.63 51.69
1906 40.56 42.04 42.60 53.72 55.60 57.62 70.32 66.21 b 58.52 b 50.92 43.43 39.44 51.75
1907 32.77 c 42.54 42.42 a 48.93 56.13 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.56
1908 41.65 42.00 45.26 50.55 52.50 ----- z ----- z 66.56 g 59.25 49.63 a 46.87 37.68 47.26
1909 29.19 42.23 46.08 49.42 54.37 60.33 63.68 65.60 p 60.08 l 52.52 44.32 33.58 47.57
1910 35.02 b 38.34 50.06 51.20 58.44 ----- z ----- z ----- z ----- z 54.53 43.92 41.20 k 47.36
1911 35.71 38.88 47.61 48.07 52.29 ----- z 70.11 65.87 57.17 51.29 45.48 39.98 50.22
1912 40.27 43.72 44.58 48.77 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.34
1913 35.19 e 37.20 r 43.92 48.60 a 57.87 62.20 c 65.81 ----- z ----- z ----- z ----- z ----- z 52.27
1914 ----- z ----- z 50.78 h ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1916 ----- z ----- z ----- z ----- z ----- z 60.05 62.47 68.13 61.65 50.77 41.02 36.47 54.37
1917 38.24 39.98 40.89 47.28 53.02 60.33 68.71 70.23 61.58 54.77 47.75 46.42 52.43
1918 43.50 39.57 45.34 50.85 53.69 65.83 67.08 66.50 66.33 53.56 44.07 39.74 53.01
1919 39.90 40.96 46.60 51.25 54.94 59.35 67.32 67.37 61.50 48.77 43.17 30.60 50.98
1920 38.56 40.41 43.68 46.83 52.37 60.30 66.48 68.03 59.42 51.48 44.13 41.61 51.11
1921 39.71 43.41 46.44 49.05 55.79 62.73 63.84 65.73 57.75 54.48 46.53 37.13 51.88
1922 33.61 37.80 41.79 46.88 55.77 64.13 67.21 66.29 62.02 53.05 b 40.25 34.65 50.29
1923 39.74 35.61 45.21 51.28 55.68 60.72 65.90 68.24 61.98 53.92 47.30 39.48 52.09
1924 36.03 45.76 44.53 51.07 59.63 62.67 65.26 64.52 60.42 51.76 42.08 32.82 51.38
1925 41.50 44.16 45.81 52.32 60.02 61.42 67.79 64.32 60.90 53.02 43.23 42.40 53.07
1926 38.81 45.43 50.05 57.30 56.10 64.23 67.47 65.92 58.37 54.81 46.88 38.32 53.64
1927 37.26 42.25 44.18 49.58 53.24 62.57 66.23 67.15 59.28 52.15 46.80 35.61 51.36
1928 36.32 41.40 48.18 48.75 59.79 60.05 66.48 65.53 59.37 51.53 43.45 36.40 51.44
1929 32.90 32.52 45.11 46.82 55.69 60.48 65.44 66.44 61.70 c 54.74 40.32 41.73 50.32
1930 24.55 43.23 47.74 52.63 52.60 59.65 64.66 67.87 61.55 50.42 42.57 37.39 50.40
1931 41.47 41.79 46.88 a 52.60 60.24 61.22 67.52 66.89 59.87 52.35 40.62 37.34 52.40
1932 36.68 39.48 46.05 50.75 55.24 63.90 63.11 67.03 63.60 53.79 45.57 34.39 51.63
1933 36.81 36.25 44.19 49.83 51.52 60.03 66.08 68.03 57.32 54.42 43.33 44.21 51.00
1934 44.39 45.96 51.71 57.12 58.60 61.27 65.79 68.42 61.35 54.69 47.08 41.11 54.79
1935 37.15 42.73 42.00 49.48 56.23 63.53 66.32 67.65 64.15 50.00 39.75 38.16 51.43
1936 41.31 33.09 43.10 53.05 59.35 62.45 65.15 66.65 60.91 a 53.74 40.55 40.69 51.67
1937 27.68 39.04 47.18 47.75 56.65 63.62 67.16 65.15 62.38 55.58 47.50 41.55 51.77
1938 38.87 40.93 44.27 51.82 57.19 63.77 70.00 64.34 65.77 53.40 a 41.40 40.48 a 52.69
1939 40.98 38.29 47.23 52.63 57.65 59.68 67.87 68.19 62.72 a 53.52 45.37 43.85 53.17
1940 39.79 44.79 49.15 52.00 a 59.94 64.87 66.48 68.81 63.50 55.21 41.63 41.34 53.96
1941 41.31 45.25 51.18 52.73 56.47 60.82 70.53 67.08 58.53 52.27 46.27 41.21 53.64
1942 34.00 41.86 45.10 51.57 55.44 59.72 68.05 68.32 62.90 53.68 43.18 41.81 52.13
1943 33.27 42.68 44.21 53.17 54.74 59.98 66.90 64.02 64.93 53.42 44.53 38.44 51.69
1944 37.82 41.64 45.10 50.18 56.71 61.00 66.89 65.90 63.85 55.56 43.63 37.19 52.12
1945 41.16 43.45 43.85 48.83 58.29 60.85 68.05 67.74 59.42 52.29 43.97 39.44 52.28
1946 38.85 41.46 45.50 50.12 58.90 59.70 66.37 67.08 60.25 49.11 42.10 41.00 51.70
1947 35.11 44.88 49.29 53.95 60.94 59.80 64.85 64.24 62.82 52.84 44.88 40.77 52.86
1948 38.16 39.09 43.42 47.17 55.60 66.15 64.81 63.97 60.50 51.10 43.10 35.90 50.75
1949 26.81 38.86 45.56 52.50 58.92 61.95 65.06 66.06 63.48 48.06 48.59 b 39.97 51.32
1950 27.52 39.07 44.65 48.55 54.87 61.98 66.87 68.48 62.75 51.50 45.77 46.23 51.52
1951 38.29 41.98 41.27 53.85 57.27 64.30 67.90 a 65.84 64.02 52.94 44.95 37.44 52.50
1952 35.89 40.57 a 44.34 52.12 57.08 a 60.26 a 68.10 65.87 63.42 58.52 39.22 39.89 52.11
1953 45.71 42.88 44.44 48.25 53.48 56.22 64.00 64.50 61.43 a 53.52 48.33 42.21 52.08
1954 37.53 42.43 43.06 49.30 57.11 58.35 62.40 62.50 59.60 51.24 48.38 40.69 b 51.05
1955 37.73 a 40.11 41.03 45.23 52.87 60.60 61.70 a 63.68 60.45 52.85 41.18 39.03 49.71
1956 39.63 34.86 43.82 52.63 59.73 58.65 68.19 66.24 61.08 50.71 41.65 39.47 51.39
1957 30.71 41.62 46.98 52.12 a 59.19 60.90 a 62.94 62.08 64.92 52.48 a 42.47 42.97 51.61
1958 43.06 48.41 45.13 50.80 61.08 64.98 70.16 69.10 61.80 54.66 46.02 45.42 55.05
1959 41.52 42.12 45.71 51.45 54.89 61.78 68.69 65.26 59.97 54.76 45.02 40.83 b 52.67
1960 35.77 42.17 45.66 50.68 54.24 63.05 68.84 65.48 63.12 55.44 46.08 40.08 52.55
1961 44.40 46.73 47.35 51.22 56.40 66.40 69.34 71.34 60.18 53.77 42.65 41.58 54.28
1962 37.47 43.52 44.47 52.32 52.84 60.92 66.32 65.71 64.30 54.71 48.42 43.26 52.85
1963 35.03 48.79 45.79 49.62 57.02 60.78 62.85 66.45 65.12 54.26 46.18 40.13 52.67
1964 41.92 41.79 44.65 48.28 53.48 60.13 66.11 64.52 61.22 54.69 42.77 38.77 51.53
1965 41.05 44.16 47.60 52.95 53.85 61.52 69.06 68.53 61.15 57.16 48.30 38.23 53.63
1966 40.53 42.39 46.10 52.50 58.00 61.77 66.22 d 67.48 64.53 54.02 47.77 44.37 53.81
1967 43.61 44.38 44.27 46.68 56.35 66.05 68.79 73.18 66.47 54.53 47.10 40.89 54.36
1968 39.85 47.50 48.61 49.13 56.68 62.12 68.50 65.76 62.65 51.97 46.00 38.00 53.06
1969 32.95 39.98 46.71 49.70 59.68 a 67.32 66.53 65.34 63.98 51.76 45.30 41.60 52.57
1970 40.58 45.52 46.36 b 47.80 56.35 65.97 68.61 68.87 59.97 52.19 45.97 39.60 53.15
1971 39.52 42.16 42.89 49.47 57.89 58.38 68.79 70.73 60.57 51.68 45.50 39.19 52.23
1972 38.60 42.81 48.73 46.85 60.05 62.75 70.94 70.87 60.20 53.40 47.48 35.66 53.19
1973 38.02 44.30 46.35 50.92 57.92 62.10 69.37 64.95 64.20 52.47 42.80 43.73 53.09
1974 37.79 42.45 47.16 50.53 54.19 64.35 66.92 69.11 67.65 55.23 46.47 43.23 53.76
1975 41.29 41.00 44.92 46.88 56.53 a 61.15 68.16 64.27 65.18 52.02 44.47 42.85 52.39
1976 41.40 41.86 44.40 49.78 57.26 58.98 b 66.08 63.77 62.12 53.35 46.90 38.56 52.04
1977 36.87 44.38 44.06 52.03 52.65 62.08 63.74 69.29 58.25 50.18 42.05 41.53 51.43
1978 40.60 44.62 48.29 49.53 53.13 63.43 67.68 66.32 58.80 53.71 37.20 34.63 51.50
1979 28.92 39.68 47.87 49.77 56.90 61.58 66.79 65.00 63.00 56.26 43.30 43.68 51.90
1980 34.60 42.79 45.50 52.63 55.90 58.45 67.37 64.16 61.83 54.27 46.90 42.19 52.22
1981 42.18 41.98 46.98 50.32 53.94 e 59.43 65.71 70.37 62.38 51.44 46.73 41.65 52.76
1982 36.55 41.20 44.79 46.53 56.26 63.93 65.21 67.44 62.45 51.90 42.33 38.66 51.44
1983 42.58 45.70 48.35 50.62 58.35 59.80 64.40 66.77 58.82 51.35 47.15 34.23 a 52.34
1984 40.26 43.45 48.45 48.18 53.48 59.42 66.55 66.15 60.17 49.56 43.71 a 35.58 51.25
1985 34.92 39.07 43.89 51.75 56.00 61.88 71.68 66.00 58.37 51.44 36.67 33.42 50.42
1986 42.52 43.93 a 50.52 49.43 56.19 65.97 63.45 71.90 60.10 55.27 45.83 39.92 53.75
1987 39.44 ----- z 47.79 53.67 ----- z ----- z 66.35 69.31 64.71 a ----- z 48.07 38.29 53.45
1988 38.71 43.96 a 46.66 51.05 54.85 61.05 68.16 66.85 62.45 58.00 46.00 40.29 53.17
1989 41.65 35.20 45.34 55.10 57.97 64.67 65.13 65.92 64.82 53.23 47.45 39.90 53.03
1990 42.19 40.30 48.34 53.93 54.77 60.93 69.65 68.23 63.28 50.47 45.28 32.11 52.46
1991 36.94 46.98 45.19 49.65 53.95 60.12 69.42 70.23 65.83 54.35 46.02 41.53 53.35
1992 43.11 48.22 52.06 55.00 63.37 69.60 71.16 70.90 63.02 56.94 45.58 39.82 56.57
1993 35.13 39.77 48.35 51.93 62.79 62.87 63.79 69.69 65.77 56.02 38.22 38.48 52.73
1994 42.68 39.20 48.76 52.78 60.34 62.62 71.40 69.34 66.67 50.53 39.78 40.37 53.71
1995 41.76 45.59 l 46.94 49.82 61.53 63.45 72.05 66.73 65.93 52.60 49.92 40.53 55.57
1996 39.66 39.17 46.29 52.02 53.71 61.38 71.82 68.56 59.48 51.81 43.64 a 40.35 52.33
1997 39.29 41.80 46.18 50.42 62.26 61.52 68.10 70.68 64.50 52.45 48.92 39.53 53.80
1998 42.08 45.18 48.48 50.85 55.68 63.73 71.23 69.79 66.30 52.79 46.95 39.66 54.39
1999 41.68 42.59 44.47 a 49.32 53.71 59.78 66.94 69.63 64.15 53.79 49.53 42.27 53.15
2000 38.71 43.71 44.71 52.63 55.42 62.78 65.02 64.69 59.92 50.69 38.87 39.68 51.40
2001 39.97 a 40.68 46.61 48.52 57.52 59.07 a 64.19 68.68 64.63 52.34 46.05 a 38.66 52.24
2002 39.87 42.50 43.89 52.25 55.48 64.90 71.18 69.26 64.27 52.97 47.60 42.77 53.91
2003 44.19 43.52 47.74 49.17 56.15 65.40 70.63 68.76 65.53 57.45 42.20 40.66 54.28
2004 37.85 44.09 50.10 53.83 58.79 65.35 71.90 71.61 61.25 55.31 43.40 41.97 54.62
2005 41.73 42.82 49.32 50.90 59.35 60.58 68.85 69.63 60.45 53.84 42.90 36.61 h 54.58
2006 43.35 41.28 e 44.65 52.08 57.77 63.57 69.29 66.66 62.92 52.05 43.30 c 38.48 52.95
2007 36.19 43.52 47.20 a 48.88 56.21 60.70 68.61 66.13 60.57 50.35 43.45 38.41 b 51.69
2008 36.02 41.67 42.95 45.62 56.58 ----- z 66.77 68.00 62.95 52.15 47.62 35.77 50.55
2009 37.66 39.52 42.84 49.10 56.84 62.72 70.84 67.42 63.42 52.21 44.70 34.84 51.84
2010 44.27 45.52 46.85 48.60 53.55 58.80 66.35 66.55 62.38 53.61 43.42 42.16 52.67
2011 39.69 38.59 44.35 45.75 51.71 59.35 63.81 67.27 65.25 53.35 42.18 37.10 50.70
2012 39.46 e 42.00 42.32 50.84 a 55.13 59.07 66.13 68.21 63.32 53.60 b 45.83 46.67 y 53.27
2013 35.65 42.62 46.31 58.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.53
Period of Record Statistics
MEAN 38.30 41.77 45.63 50.36 56.29 61.77 67.06 67.12 62.04 52.91 44.45 39.58 52.41
S.D. 3.92 3.09 2.48 2.44 2.61 2.41 2.46 2.20 2.43 2.16 2.85 2.98 1.20
SKEW -1.03 -0.50 0.27 0.15 0.35 0.44 0.05 0.27 0.08 0.03 -0.41 -0.47 0.52
MAX 45.71 48.79 52.06 57.30 63.37 69.60 72.05 73.18 67.65 58.52 49.92 46.42 56.57
MIN 24.55 32.52 40.31 45.23 50.27 55.92 61.70 62.08 57.17 46.77 36.67 30.60 49.71
NO YRS 118 115 117 116 115 104 105 102 105 114 114 112 94