FOREST GROVE, OREGON

Monthly Average Minimum 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 23.84 29.11 33.06 35.23 41.52 43.33 47.00 ----- z 44.67 u 36.45 33.40 35.58 35.85
1894 31.97 27.14 32.68 37.60 42.43 a 48.74 k ----- z ----- z ----- z 39.41 b 37.73 30.70 a 34.96
1895 29.48 35.21 d 31.19 38.07 42.61 ----- z ----- z ----- z ----- z 37.68 32.33 33.97 35.07
1896 33.58 35.69 32.35 36.80 41.55 46.23 ----- z ----- z 44.77 37.68 30.97 36.55 37.62
1897 31.81 35.21 32.52 40.60 46.39 48.33 ----- z ----- z 43.93 a 39.32 34.87 34.45 38.74
1898 30.16 36.04 31.55 38.17 40.48 ----- z ----- z ----- z ----- z 38.29 32.57 28.45 34.46
1899 32.94 26.79 31.27 a 36.30 40.32 ----- z ----- z ----- z ----- z 38.07 b 43.67 33.55 35.36
1900 32.77 31.89 38.61 37.43 44.23 49.18 m ----- z ----- z ----- z 39.16 34.43 36.13 36.83
1901 30.61 31.88 c 34.10 b 35.93 45.45 ----- z ----- z ----- z ----- z 45.68 39.40 34.45 37.19
1902 31.23 38.00 b 35.37 a 38.33 44.19 d ----- z ----- z ----- z ----- z 41.71 36.67 33.00 37.31
1903 34.06 27.93 30.94 34.70 43.13 49.40 48.10 49.03 43.40 39.97 36.53 36.06 39.44
1904 33.68 32.86 35.61 40.90 40.68 46.60 48.26 46.29 45.07 41.03 41.60 34.46 c 40.59
1905 30.00 a 31.14 39.06 38.73 43.06 46.37 50.13 48.39 45.50 38.06 30.83 31.58 39.41
1906 34.13 32.00 31.65 37.73 42.74 44.70 52.10 47.62 b 42.18 b 38.52 35.20 32.65 39.27
1907 24.93 c 32.54 32.13 36.23 40.26 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.22
1908 34.87 33.69 35.84 37.70 39.65 ----- z ----- z 45.21 g 43.33 38.27 a 38.17 31.74 37.03
1909 18.90 36.96 35.29 36.90 41.42 44.63 47.00 46.73 p 42.22 l 41.55 37.93 25.74 36.63
1910 29.14 b 31.46 38.39 38.27 43.45 ----- z ----- z ----- z ----- z 41.84 36.47 34.45 k 37.00
1911 29.81 31.04 33.06 33.83 40.00 ----- z 51.65 48.13 44.77 37.90 35.63 32.94 38.07
1912 33.29 33.17 32.68 38.33 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 34.37
1913 31.27 e 28.10 r 33.87 37.83 47.32 50.52 c 51.45 ----- z ----- z ----- z ----- z ----- z 42.04
1914 ----- z ----- z 40.30 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 47.57 50.77 54.74 48.20 36.61 32.77 31.65 43.19
1917 31.16 32.82 32.97 38.43 41.84 45.47 51.55 52.19 49.97 40.00 38.30 42.03 41.39
1918 38.16 33.04 36.68 36.67 40.71 49.17 51.23 51.90 50.10 43.94 37.93 34.10 41.97
1919 33.55 34.93 37.19 39.93 42.61 45.30 49.87 50.10 47.70 37.68 37.70 23.81 40.03
1920 31.97 29.76 35.13 37.30 37.94 46.40 50.48 51.45 48.53 43.26 36.43 37.65 40.52
1921 34.48 36.68 37.29 38.27 42.90 50.50 46.68 48.90 43.90 42.77 39.23 31.35 41.08
1922 27.48 30.54 33.52 35.23 42.94 47.13 49.13 51.48 47.77 43.97 32.43 30.55 39.35
1923 35.26 27.25 33.87 39.20 43.48 47.30 51.10 51.84 46.33 41.74 37.83 34.45 40.80
1924 29.74 38.83 34.00 37.53 42.90 46.33 48.29 48.87 45.27 42.61 35.00 26.39 39.65
1925 35.71 38.00 35.10 40.47 45.74 46.67 50.26 48.87 47.07 39.81 37.43 35.74 41.74
1926 31.77 37.89 36.55 41.80 43.32 48.00 49.16 50.10 44.83 44.06 39.53 33.00 41.67
1927 31.87 34.61 34.35 37.63 42.06 49.10 50.52 50.61 47.30 41.84 40.83 29.74 40.87
1928 30.48 32.48 39.19 39.47 43.61 47.90 50.55 48.13 45.37 41.97 36.17 30.03 40.45
1929 25.90 22.93 35.58 36.03 41.39 47.60 48.10 47.84 43.70 41.81 29.53 35.58 38.00
1930 17.13 35.71 35.29 40.23 40.06 45.40 48.29 50.74 48.57 38.55 34.63 31.35 38.83
1931 34.77 32.89 37.83 a 39.40 44.77 47.63 50.29 48.52 46.97 40.48 33.13 32.65 40.78
1932 31.48 32.21 38.48 40.17 41.87 47.93 47.48 52.84 45.77 43.48 38.57 27.65 40.66
1933 32.06 29.32 35.77 36.13 41.42 46.80 49.48 51.71 45.80 42.87 36.07 39.58 40.59
1934 38.29 36.07 39.45 42.87 45.00 45.93 50.61 51.32 47.43 43.97 41.93 35.55 43.20
1935 31.03 34.43 34.26 37.03 40.19 48.40 49.97 50.29 47.50 39.90 32.40 31.42 39.74
1936 35.58 26.62 33.03 40.90 46.06 49.97 50.10 49.10 45.17 a 39.23 28.60 35.97 40.03
1937 21.26 32.50 38.52 38.20 42.97 50.93 51.77 50.13 48.53 44.90 41.77 35.55 41.42
1938 32.71 33.79 35.52 39.97 42.26 47.53 52.19 47.58 51.27 43.84 34.97 34.17 a 41.32
1939 35.97 31.54 36.16 38.77 42.87 46.20 51.35 51.42 48.34 a 44.42 37.97 39.26 42.02
1940 33.48 39.00 39.84 40.48 a 45.71 48.07 51.32 51.97 51.50 47.42 34.77 36.00 43.30
1941 34.81 35.43 38.77 39.70 44.13 48.37 53.84 53.65 48.10 42.90 39.73 35.58 42.92
1942 27.97 34.68 34.23 39.97 44.29 47.37 53.23 52.52 47.37 43.03 37.40 37.29 41.61
1943 26.61 32.79 34.45 41.13 42.03 47.07 51.16 50.00 48.73 45.29 36.40 31.45 40.59
1944 30.94 33.45 34.39 39.60 43.35 46.90 50.55 50.68 49.47 45.10 37.00 30.71 41.01
1945 34.77 36.25 35.87 38.47 45.74 46.90 51.55 51.19 45.93 41.55 38.57 34.55 41.78
1946 33.48 35.25 36.45 38.37 44.61 47.83 51.71 50.06 46.83 40.16 34.53 35.65 41.25
1947 29.26 35.79 38.42 41.77 45.81 48.00 50.23 48.81 48.10 45.74 37.93 35.35 42.10
1948 31.06 31.79 34.32 38.30 44.13 52.10 50.23 51.87 46.63 40.97 36.00 30.45 40.65
1949 16.94 30.71 36.77 39.47 45.55 47.67 49.61 50.52 46.80 36.35 39.32 b 34.58 39.52
1950 20.19 31.43 37.45 37.43 41.03 49.00 50.94 51.58 46.37 43.39 39.00 40.32 40.68
1951 31.97 34.00 32.06 38.33 44.16 48.47 51.83 a 48.81 47.50 43.52 37.87 31.74 40.85
1952 30.48 33.93 a 35.58 38.17 42.60 a 48.76 a 50.68 50.19 45.97 41.97 28.13 32.71 39.93
1953 39.52 33.82 35.48 38.23 42.94 45.90 49.06 50.29 45.72 a 40.61 40.37 36.65 41.55
1954 32.23 33.93 31.74 37.73 43.29 47.00 48.52 50.13 46.87 38.87 42.03 34.38 b 40.56
1955 32.71 32.43 32.68 35.40 40.68 47.33 49.10 46.52 45.97 44.10 35.17 33.29 39.61
1956 33.74 28.72 35.81 39.43 45.19 47.00 52.03 51.42 46.93 42.06 32.40 33.55 40.69
1957 24.35 33.75 39.23 40.07 a 46.81 47.72 a 47.58 46.71 48.13 42.60 a 32.63 37.19 40.57
1958 36.35 41.79 34.87 39.53 46.10 52.73 52.58 51.26 48.37 40.55 38.80 39.45 43.53
1959 35.81 34.89 36.58 39.70 43.16 50.07 53.48 49.06 47.67 43.39 35.30 33.07 a 41.85
1960 30.61 34.28 36.10 40.17 44.39 48.43 51.45 51.87 47.70 43.13 38.20 31.87 41.52
1961 37.29 40.61 39.03 41.43 45.06 51.27 53.42 54.39 44.97 41.48 33.83 35.55 43.19
1962 29.52 35.04 35.19 40.70 43.10 46.47 49.90 51.65 48.60 43.84 40.63 36.03 41.72
1963 27.48 40.00 36.29 40.40 43.81 49.30 50.61 52.55 50.63 43.68 39.10 32.97 42.24
1964 36.29 30.86 34.97 36.23 40.26 48.53 52.55 50.55 46.77 40.61 35.00 33.00 40.47
1965 34.84 36.36 33.84 40.17 40.58 46.03 51.84 54.13 44.87 44.45 41.73 32.87 41.81
1966 34.68 34.29 36.74 39.63 42.42 47.90 51.94 51.00 50.70 41.39 40.90 39.71 42.61
1967 38.87 34.71 35.71 35.50 42.23 51.87 51.77 53.71 48.17 44.48 38.60 35.19 42.57
1968 33.68 37.14 39.10 37.00 44.06 48.97 52.48 53.16 48.83 41.74 38.73 33.03 42.33
1969 27.90 32.54 33.68 38.83 45.70 a 55.13 51.42 49.32 51.07 40.65 36.93 36.00 41.60
1970 34.77 34.75 35.55 37.57 41.90 50.70 51.58 51.77 45.97 38.97 38.40 34.26 41.35
1971 34.32 34.21 34.26 37.73 44.68 47.07 53.03 54.81 46.87 40.61 38.70 33.94 41.69
1972 32.39 35.48 39.45 36.27 46.13 49.20 55.55 53.81 45.90 39.55 40.33 28.81 41.91
1973 31.97 35.00 37.03 37.93 42.90 48.53 52.90 48.16 49.13 41.19 36.40 37.74 41.58
1974 30.65 35.61 37.35 40.33 42.29 49.00 52.74 52.13 48.57 38.42 37.43 37.13 41.80
1975 34.68 33.50 35.00 35.20 42.97 a 47.83 52.94 50.42 46.87 43.65 37.10 36.84 41.42
1976 34.00 32.79 34.77 38.37 43.45 45.97 a 52.29 51.45 47.93 39.35 35.63 31.71 40.64
1977 27.87 33.89 35.74 39.33 42.10 47.70 49.32 52.65 46.13 36.61 32.87 34.52 39.89
1978 34.87 37.61 38.19 40.43 42.77 50.90 54.68 53.55 49.20 40.45 27.73 27.71 41.51
1979 21.77 33.57 37.52 40.67 45.58 47.87 52.97 52.42 51.23 46.03 35.13 37.61 41.86
1980 27.39 36.24 37.55 42.30 46.00 49.60 54.55 49.71 48.20 41.77 40.87 36.10 42.52
1981 33.42 34.29 36.29 40.77 42.63 d 49.13 52.65 54.68 48.97 40.90 38.83 36.32 42.41
1982 31.55 34.32 35.29 36.10 43.81 51.53 53.13 53.71 49.57 41.03 34.50 32.45 41.42
1983 36.39 39.36 40.65 38.40 46.29 49.67 53.10 53.77 45.17 38.90 41.30 29.37 a 42.70
1984 32.77 35.28 39.52 38.77 43.19 47.87 51.19 50.35 47.60 40.42 37.17 a 28.74 41.07
1985 25.84 30.46 33.74 40.93 44.00 48.70 54.71 51.00 45.67 40.16 29.77 24.74 39.14
1986 35.16 36.39 40.16 39.03 45.68 53.10 50.94 55.65 48.77 42.06 38.97 33.45 43.28
1987 32.71 ----- z 38.90 41.27 ----- z ----- z 54.65 54.29 48.90 ----- z 39.90 33.29 42.99
1988 32.45 34.28 36.13 40.77 43.90 49.30 53.84 51.39 46.77 47.03 39.77 33.90 42.46
1989 35.61 27.07 37.87 42.67 46.10 51.13 53.19 53.23 48.43 42.06 40.10 32.90 42.53
1990 35.81 31.93 37.65 42.40 43.81 50.13 54.71 54.35 50.53 40.13 38.17 25.42 42.09
1991 28.65 37.86 34.81 38.27 42.81 48.37 52.52 53.71 51.07 40.87 39.90 36.61 42.12
1992 37.00 38.66 38.90 44.13 47.77 55.97 56.68 53.29 48.00 44.87 37.93 34.45 44.80
1993 28.45 29.61 38.58 42.10 51.19 50.87 52.42 54.77 47.40 42.13 29.57 32.00 41.59
1994 36.71 30.89 36.90 40.73 46.94 48.47 53.55 53.61 50.87 36.39 33.50 34.58 41.93
1995 35.35 34.12 l 36.74 38.57 46.90 50.50 57.48 50.74 52.10 41.19 42.70 34.23 44.23
1996 34.74 30.24 35.39 42.33 43.84 47.67 56.00 53.00 45.70 39.81 36.00 a 34.58 41.61
1997 33.10 32.29 37.13 38.97 49.03 49.83 54.16 55.94 51.00 42.29 40.37 32.48 43.05
1998 36.32 37.43 39.39 39.23 47.10 50.73 57.26 54.77 49.43 41.42 41.53 34.26 44.07
1999 36.16 35.71 35.50 a 37.13 40.90 48.27 50.45 56.84 46.23 39.45 40.90 34.32 41.82
2000 31.10 35.90 35.19 40.90 44.26 49.43 51.52 50.26 46.83 40.06 30.87 32.71 40.75
2001 31.00 a 30.07 35.90 37.20 43.16 47.07 a 50.19 53.77 49.23 40.35 38.90 33.26 40.84
2002 34.29 33.36 34.45 40.53 44.06 51.50 55.81 53.16 48.77 39.87 38.70 36.77 42.61
2003 35.94 32.96 39.13 39.37 44.10 51.50 54.45 53.97 51.03 46.61 33.50 34.19 43.06
2004 32.45 35.62 37.45 40.40 47.35 52.60 56.52 56.84 48.17 43.65 34.67 34.58 43.36
2005 33.42 29.46 37.10 40.30 48.68 49.57 55.03 52.71 46.07 45.58 33.43 30.22 h 42.85
2006 37.94 32.13 e 36.45 41.57 45.74 52.57 54.87 51.77 47.07 39.00 36.56 c 32.68 42.36
2007 28.87 36.64 37.57 a 38.10 43.84 49.37 56.58 53.45 47.77 40.87 35.17 33.69 b 41.83
2008 30.03 32.93 34.58 36.23 46.61 ----- z 53.35 55.48 49.00 42.00 41.60 30.19 41.09
2009 30.61 30.18 34.84 38.23 44.32 52.07 56.35 54.45 49.93 43.16 37.87 28.10 41.68
2010 39.13 37.86 37.94 39.87 44.23 49.53 52.42 52.74 51.97 42.94 37.50 37.39 43.62
2011 34.13 31.57 38.10 36.53 42.03 49.70 51.97 53.81 51.80 45.23 35.23 30.39 41.71
2012 33.31 e 35.03 35.35 41.50 43.61 49.27 53.97 54.00 47.90 43.52 b 40.10 41.00 y 43.41
2013 30.39 36.25 37.45 43.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 34.70
Period of Record Statistics
MEAN 31.90 33.68 35.90 38.87 43.66 48.65 51.81 51.63 47.61 41.49 36.80 33.57 41.43
S.D. 4.32 3.20 2.26 1.99 2.20 2.18 2.38 2.33 2.12 2.49 3.39 3.28 1.23
SKEW -1.23 -0.34 -0.11 -0.03 0.37 0.61 0.18 -0.08 0.04 0.06 -0.53 -0.48 -0.08
MAX 39.52 41.79 40.65 44.13 51.19 55.97 57.48 56.84 52.10 47.42 43.67 42.03 44.80
MIN 16.94 22.93 30.94 33.83 37.94 43.33 46.68 46.29 42.18 36.35 27.73 23.81 38.00
NO YRS 118 115 118 117 115 104 105 102 105 114 115 112 95