SILVERTON, OREGON

Monthly Average Maximum 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 78.67 z 74.60 61.42 54.40 47.40 k 63.47
1963 41.58 57.18 54.03 55.60 66.68 69.50 72.61 77.42 76.70 64.03 53.20 47.61 61.35
1964 48.23 50.07 51.74 56.43 62.48 68.17 76.39 75.29 70.63 64.77 49.00 44.58 59.82
1965 44.94 50.00 58.77 61.07 63.06 70.47 81.39 78.45 72.83 65.26 53.87 43.81 61.99
1966 45.06 49.75 53.32 61.73 67.48 72.10 76.29 80.13 74.20 62.19 53.73 50.10 62.17
1967 49.58 51.96 51.65 55.27 66.77 75.30 82.61 87.32 80.63 63.10 54.07 46.87 63.76
1968 46.06 57.07 56.71 57.07 64.23 71.07 79.23 75.06 70.97 61.00 53.70 43.55 61.31
1969 39.77 47.86 57.35 58.37 68.81 74.00 77.00 77.16 73.40 60.23 52.77 48.45 61.26
1970 46.00 55.14 55.35 55.53 65.94 76.07 80.81 80.23 69.87 61.81 54.07 45.90 62.23
1971 44.45 48.75 50.61 58.10 66.00 66.50 78.61 81.71 70.13 59.87 50.67 44.52 59.99
1972 43.77 50.00 56.03 55.43 68.16 71.40 82.58 82.94 71.60 62.74 52.97 42.45 61.67
1973 45.35 53.50 54.39 60.43 69.03 a 71.37 81.39 77.00 74.30 60.74 49.10 49.74 62.20
1974 43.45 46.61 54.68 57.93 62.23 73.23 76.74 81.00 82.87 67.77 53.40 49.06 62.41
1975 48.26 49.18 51.48 54.60 66.06 70.83 78.87 73.77 78.73 60.48 51.80 49.00 61.09
1976 47.68 48.83 51.45 57.23 66.61 68.83 77.68 74.42 74.70 65.42 55.50 44.61 61.08
1977 46.10 53.79 51.97 62.70 61.29 73.73 76.90 84.32 70.20 63.71 51.63 48.13 62.04
1978 46.35 51.68 59.26 58.77 63.65 75.13 79.16 77.94 68.63 66.42 48.17 42.03 61.43
1979 37.68 48.21 58.29 58.53 67.45 75.03 80.81 77.45 76.33 66.32 50.23 51.03 62.28
1980 44.06 51.76 52.65 62.10 64.61 67.23 79.16 77.42 75.20 66.45 54.60 49.90 62.10
1981 48.23 50.50 58.13 60.03 64.84 68.80 78.10 84.10 75.83 62.26 54.97 48.81 62.88
1982 43.71 49.07 54.06 56.50 67.13 74.33 77.32 79.03 73.10 64.90 51.73 48.29 61.60
1983 47.84 53.36 56.74 60.63 69.19 68.83 72.87 78.32 70.70 62.03 54.20 41.32 61.34
1984 49.48 53.41 57.13 56.30 62.81 68.73 78.90 79.06 72.03 57.23 51.07 42.06 60.69
1985 40.52 ----- z 53.13 61.57 66.55 73.40 84.48 78.06 69.80 62.52 43.67 40.06 61.25
1986 50.94 50.54 60.19 58.37 65.58 76.63 74.13 84.23 68.60 63.90 52.70 45.45 62.60
1987 45.87 ----- z 55.97 64.67 69.52 75.97 76.03 80.65 76.13 70.81 54.30 42.94 64.80
1988 44.39 50.93 55.39 59.90 64.10 70.93 80.03 79.42 75.97 66.03 52.63 45.03 62.06
1989 47.16 43.07 52.97 64.83 66.23 74.17 74.45 74.84 77.73 62.10 52.63 44.45 61.22
1990 48.29 46.61 ----- z 63.17 64.84 71.23 82.03 79.45 76.57 60.77 53.90 39.77 62.42
1991 46.19 56.25 52.65 57.87 61.42 66.53 80.29 80.13 78.27 66.39 52.57 45.74 62.02
1992 50.03 55.21 61.19 62.87 75.52 78.47 80.58 82.16 72.07 64.74 51.10 44.39 64.86
1993 41.68 47.21 56.48 58.43 68.94 69.77 71.52 78.00 77.90 67.23 47.13 43.55 60.65
1994 48.42 47.75 59.06 60.70 68.65 71.13 82.19 78.71 77.17 61.84 46.50 47.23 62.45
1995 50.42 54.61 56.61 58.63 68.90 71.80 79.68 76.16 75.03 61.42 56.83 46.84 63.08
1996 46.19 49.14 55.45 60.90 62.03 71.97 82.61 79.97 70.60 60.68 51.50 47.06 61.51
1997 46.23 50.00 53.58 57.97 71.71 70.50 76.97 80.71 74.00 58.42 55.27 44.94 61.69
1998 49.00 52.46 54.90 59.57 61.65 70.47 78.97 79.29 76.30 61.16 52.80 44.58 61.76
1999 46.90 48.21 51.74 58.63 62.52 68.03 76.77 77.90 76.80 64.29 55.07 47.65 61.21
2000 45.16 49.62 51.94 61.17 64.23 74.07 76.61 77.52 72.17 62.19 48.33 45.81 60.73
2001 46.90 49.96 54.42 56.80 68.77 68.90 76.55 78.65 73.67 62.19 54.00 45.48 61.36
2002 45.45 51.46 50.71 59.10 63.03 73.33 80.81 79.42 75.13 62.45 54.13 49.13 62.01
2003 50.81 51.68 55.03 56.67 64.42 75.43 82.90 79.61 76.07 65.39 48.80 45.84 62.72
2004 43.32 50.97 58.94 63.70 66.26 73.30 81.87 80.68 69.57 62.48 49.47 46.90 62.29
2005 47.68 51.04 58.52 58.83 66.77 68.03 79.84 82.16 72.03 61.87 49.73 43.84 61.70
2006 48.42 49.14 51.68 61.27 ----- z 73.60 81.61 79.06 75.53 62.39 51.73 45.52 61.81
2007 43.65 49.93 56.84 58.93 66.65 70.80 79.84 77.42 71.83 58.10 49.93 44.81 60.73
2008 41.61 49.66 50.94 54.17 65.16 69.23 79.65 78.48 74.70 61.16 53.83 42.77 60.11
2009 44.13 48.64 50.48 58.57 68.03 72.10 82.90 78.84 75.20 60.39 52.93 41.48 61.14
2010 50.39 52.57 54.94 57.73 61.65 67.50 77.84 77.84 71.20 62.23 49.97 47.68 60.96
2011 45.94 46.25 52.10 54.23 60.06 68.13 73.94 78.42 77.00 60.19 49.80 42.77 59.07
2012 46.90 49.55 50.39 60.57 64.81 67.93 75.97 81.03 76.03 63.58 52.77 45.65 61.26
2013 39.48 48.82 55.32 72.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 47.88
Period of Record Statistics
MEAN 45.88 50.59 54.75 59.00 65.77 71.48 78.73 79.17 74.14 62.88 52.02 45.58 61.65
S.D. 3.05 2.88 2.87 2.67 3.00 2.92 2.99 2.65 3.14 2.63 2.61 2.70 1.01
SKEW -0.54 0.30 0.28 0.23 0.55 0.24 -0.39 0.60 0.26 0.49 -0.87 -0.07 0.35
MAX 50.94 57.18 61.19 64.83 75.52 78.47 84.48 87.32 82.87 70.81 56.83 51.03 64.86
MIN 37.68 43.07 50.39 54.17 60.06 66.50 71.52 73.77 68.60 57.23 43.67 39.77 59.07
NO YRS 51 49 50 50 49 50 50 50 51 51 51 50 46