SILVERTON, OREGON

Monthly Average Temperature (Degrees Fahrenheit)

(357823)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1962 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 65.00 z 63.05 52.87 47.30 41.35 k 54.41
1963 34.27 48.62 45.19 47.37 55.92 59.77 61.82 65.58 64.87 54.87 46.65 40.03 52.08
1964 42.06 40.93 43.60 47.32 52.16 58.35 64.58 63.68 58.93 54.10 42.22 38.76 50.56
1965 39.74 42.64 46.98 51.12 52.48 58.73 66.97 66.39 59.50 55.35 47.23 37.39 52.04
1966 39.15 41.27 44.24 51.37 55.53 60.70 64.32 66.29 62.20 52.48 46.98 44.74 52.44
1967 43.98 43.29 43.79 45.77 55.21 63.77 67.85 72.00 65.87 53.65 46.05 40.97 53.52
1968 39.85 47.93 47.71 47.40 54.32 60.40 66.40 64.53 60.27 51.35 46.13 37.65 52.00
1969 33.69 40.38 46.23 48.95 57.79 64.05 64.42 63.92 61.83 50.55 45.48 42.13 51.62
1970 40.19 45.86 46.27 46.62 54.44 63.87 66.35 65.50 58.07 51.56 45.78 39.61 52.01
1971 38.92 40.86 42.40 47.80 55.00 56.97 65.79 68.18 58.55 49.89 43.65 38.63 50.55
1972 37.82 42.59 47.66 46.12 56.90 60.63 68.68 68.77 59.45 51.69 46.18 35.89 51.87
1973 38.00 44.07 46.23 50.35 57.28 a 61.12 67.42 63.18 62.17 51.85 43.37 43.47 52.37
1974 36.26 40.96 45.89 49.03 53.05 61.80 65.16 67.37 67.13 54.45 46.30 42.53 52.50
1975 41.66 41.07 43.66 45.87 55.77 60.08 66.85 62.95 64.63 52.97 44.43 42.35 51.86
1976 41.15 41.10 42.79 47.72 54.95 58.23 64.95 63.82 62.75 53.52 46.87 38.00 51.32
1977 37.05 44.11 43.48 51.40 51.81 61.57 64.63 70.90 60.02 53.60 44.38 42.58 52.13
1978 41.61 45.38 49.68 49.63 53.97 63.80 67.02 66.19 60.08 55.15 40.00 35.35 52.32
1979 30.42 41.82 48.90 50.43 56.81 62.58 67.66 65.45 64.45 56.66 42.60 44.02 52.65
1980 36.02 43.67 45.19 51.85 55.18 58.02 66.29 63.55 62.13 54.44 47.02 42.58 52.16
1981 41.19 42.82 48.13 51.03 55.50 59.05 65.60 69.87 63.05 52.27 47.12 42.45 53.17
1982 38.37 41.66 45.16 46.27 55.15 63.03 64.89 66.47 61.38 54.15 42.98 41.40 51.74
1983 41.84 46.32 49.00 50.17 58.02 59.63 63.16 66.97 59.62 52.35 47.68 35.92 52.56
1984 42.26 45.31 48.76 47.80 53.61 58.23 65.53 66.37 61.07 50.66 44.95 36.69 51.77
1985 34.03 ----- z 44.32 51.93 55.92 61.57 70.19 65.40 59.08 52.90 37.57 33.35 51.48
1986 43.76 44.14 51.48 49.32 56.18 65.47 63.53 70.52 59.25 54.79 46.68 39.18 53.69
1987 39.66 ----- z 48.05 54.00 58.87 64.02 65.15 67.58 64.00 57.92 47.98 38.63 55.08
1988 39.03 43.17 46.73 51.53 54.92 60.38 67.40 66.55 62.97 57.35 47.48 39.47 a 53.08
1989 41.74 35.95 45.94 54.97 56.19 63.43 64.15 64.77 64.20 53.13 46.98 38.58 52.50
1990 42.68 40.36 ----- z 53.58 55.53 61.80 69.37 68.44 65.70 52.13 47.80 34.10 53.77
1991 39.48 48.55 45.08 49.75 53.37 57.92 67.52 67.94 65.02 54.97 46.87 40.35 53.07
1992 43.53 47.14 51.47 53.62 62.48 66.23 68.68 68.58 61.42 55.92 45.48 39.08 55.30
1993 35.63 39.30 48.63 50.95 59.35 60.53 62.44 66.89 63.63 56.48 39.08 38.56 51.79
1994 42.55 40.95 49.29 52.10 58.02 60.15 68.42 66.55 65.45 52.05 40.53 41.58 53.14
1995 43.61 46.80 47.11 49.37 58.13 61.55 68.03 64.60 64.70 52.95 50.80 41.50 54.10
1996 41.63 40.91 47.35 52.28 53.23 60.40 69.48 67.56 59.68 52.66 45.52 41.50 52.68
1997 40.66 42.52 46.56 49.37 60.94 60.77 65.69 68.68 63.10 51.58 48.60 39.29 53.15
1998 43.65 45.52 47.45 50.65 54.47 60.80 67.94 67.50 64.40 52.68 47.45 39.07 a 53.46
1999 41.44 42.96 44.40 49.02 53.00 58.98 64.76 67.06 62.78 53.89 48.88 41.77 a 52.41
2000 39.07 a 43.19 44.32 51.77 55.39 62.62 65.02 65.18 61.80 53.06 40.68 40.15 51.85
2001 40.10 41.84 46.90 48.47 57.10 59.19 a 65.18 66.88 a 62.73 52.73 a 47.97 40.63 52.48
2002 40.81 43.41 43.34 50.52 53.71 62.67 68.06 67.03 63.17 52.87 47.15 43.16 52.99
2003 44.77 43.71 48.56 48.83 55.39 64.47 69.18 67.82 64.48 57.11 42.47 41.31 54.01
2004 38.82 44.05 49.40 53.32 57.50 62.95 69.29 69.13 60.77 54.74 43.72 41.94 53.80
2005 41.13 41.62 49.19 51.05 58.29 59.23 68.08 68.77 60.77 54.42 42.60 38.71 52.82
2006 44.11 40.98 44.44 51.30 ----- z 63.68 69.05 66.45 63.07 52.13 46.17 39.08 52.77
2007 37.13 43.62 48.66 49.58 55.90 60.70 68.56 66.52 61.05 50.98 42.88 39.84 52.12
2008 36.11 42.62 43.18 46.00 56.11 58.73 67.21 67.34 62.33 52.11 47.42 37.18 51.36
2009 38.55 40.88 43.40 49.27 56.56 62.72 70.19 67.44 63.97 52.26 46.48 35.74 52.29
2010 45.39 45.73 46.69 48.87 52.94 58.72 65.74 66.08 62.35 54.10 44.78 43.00 52.87
2011 40.61 39.79 45.27 46.12 51.74 59.18 63.68 67.05 65.25 53.35 43.28 37.02 51.03
2012 40.37 42.52 42.82 51.47 54.87 58.88 65.15 68.23 63.50 54.45 47.18 41.47 52.58
2013 35.26 42.93 46.85 62.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.68
Period of Record Statistics
MEAN 39.82 43.02 46.36 49.81 55.65 61.04 66.47 66.81 62.39 53.45 45.33 39.77 52.47
S.D. 3.17 2.52 2.32 2.32 2.25 2.20 2.06 1.97 2.19 1.80 2.70 2.62 0.91
SKEW -0.65 0.19 0.19 0.02 0.61 0.33 -0.10 0.19 -0.08 0.49 -0.85 -0.38 0.51
MAX 45.39 48.62 51.48 54.97 62.48 66.23 70.19 72.00 67.13 57.92 50.80 44.74 55.30
MIN 30.42 35.95 42.40 45.77 51.74 56.97 61.82 62.95 58.07 49.89 37.57 33.35 50.55
NO YRS 51 49 50 50 49 50 50 50 51 51 51 50 46