SISTERS, OREGON

Monthly Average Maximum Temperature (Degrees Fahrenheit)

(357857)

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
1958 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 85.70 u 72.17 67.13 50.37 48.32 59.50
1959 42.90 42.33 a 51.10 60.50 60.57 a 72.93 85.58 79.03 a 68.45 a 64.00 55.37 42.67 a 60.45
1960 37.58 42.44 b 52.13 57.30 60.87 77.30 88.57 a 78.77 76.47 64.81 45.93 41.29 60.29
1961 43.97 48.74 a 49.92 f 57.45 a 62.58 80.40 84.97 85.93 a 68.89 c 62.20 a 46.40 41.68 c 62.11
1962 41.87 43.14 48.06 62.77 58.45 73.80 82.19 77.65 77.40 62.19 50.77 46.52 60.40
1963 42.77 53.00 50.66 b 51.47 65.55 70.53 77.23 81.65 79.60 63.23 49.17 a 42.29 60.59
1964 42.32 49.96 f 48.48 54.60 63.29 70.30 81.25 c 78.60 a 73.20 65.06 45.36 b 39.10 60.14
1965 41.55 50.54 53.00 a 59.20 64.45 73.10 82.29 78.16 69.63 69.81 49.43 41.77 61.08
1966 43.10 44.39 53.23 61.03 69.35 70.87 79.29 81.90 76.85 c 65.52 49.80 43.45 61.57
1967 45.16 51.07 47.52 49.57 66.90 74.90 86.00 90.03 81.40 63.87 48.90 40.23 62.13
1968 43.00 47.28 55.29 57.07 64.42 74.90 86.42 76.58 75.50 61.74 47.60 41.18 i 62.71
1969 35.03 40.54 53.29 58.03 71.19 75.23 81.32 81.23 ----- z 58.52 52.10 41.87 58.94
1970 41.87 47.43 51.13 51.90 67.84 78.37 85.26 85.77 70.20 61.13 46.73 39.97 60.63
1971 45.16 46.96 b 46.84 56.43 65.06 69.30 85.55 87.45 69.27 60.42 50.40 39.87 60.23
1972 40.45 46.79 55.71 53.50 69.84 76.23 84.61 84.39 71.83 61.29 48.83 34.90 60.70
1973 37.32 45.29 51.39 60.27 70.29 76.17 87.10 82.90 75.07 63.10 44.00 43.81 61.39
1974 35.35 46.46 49.97 56.60 63.13 81.97 82.10 83.39 81.13 66.16 51.17 43.03 61.70
1975 43.45 43.56 a 46.58 51.70 66.30 d 72.07 85.19 79.23 78.57 59.52 45.77 44.39 59.69
1976 45.16 45.90 51.10 55.00 69.94 72.03 86.42 76.32 76.13 66.84 51.13 45.35 61.78
1977 40.58 51.75 d 50.61 65.07 60.00 81.23 84.48 91.52 71.63 64.07 b 47.53 41.32 62.48
1978 40.10 a 44.50 55.42 50.77 63.71 76.20 83.68 79.29 71.53 68.72 b 40.72 e 40.04 h 61.33
1979 ----- z 40.32 f 51.23 53.63 ----- z 76.19 d 84.87 78.73 a 78.20 68.00 e 41.42 f 44.57 c 66.93
1980 34.50 i ----- z ----- z ----- z ----- z 71.32 k 85.17 a 82.41 b 78.24 e 67.09 h 53.00 m 49.56 m 81.94
1981 41.53 l 46.78 j 55.80 k 61.09 g 66.85 e 75.85 c 81.63 d 90.04 e 76.00 e 59.90 j 51.22 l 41.82 i 78.07
1982 39.37 l 42.22 j 50.58 55.00 65.95 j 74.40 80.77 83.42 70.10 58.26 44.43 38.48 61.72
1983 45.61 45.11 51.61 56.86 b 71.00 m 70.10 77.03 85.68 71.43 66.32 47.13 33.00 p 61.69
1984 36.70 k 38.05 i 46.52 46.87 60.06 63.86 a 88.10 86.32 73.80 56.52 44.57 38.13 60.47
1985 37.42 44.86 51.16 64.13 68.65 79.50 91.87 82.00 68.03 60.52 b 39.87 33.68 60.14
1986 42.53 a 45.25 57.35 57.72 a 67.23 83.37 80.19 90.13 68.37 66.55 48.86 a 36.39 62.00
1987 38.50 k 45.78 j 54.09 i 70.90 i ----- z 80.52 e 78.81 83.84 81.73 72.95 j 51.06 n 38.55 k 81.22
1988 36.10 b 49.59 52.90 61.90 65.37 l 73.90 i 85.35 k 87.17 h 76.14 i 73.95 k 46.87 42.23 48.26
1989 41.77 35.11 49.48 62.93 65.00 77.93 82.45 79.61 76.30 62.68 51.80 46.35 60.95
1990 42.10 44.39 53.94 65.97 64.55 74.57 87.06 83.87 81.40 62.35 51.73 34.81 62.23
1991 41.26 52.82 48.10 56.30 61.71 70.40 86.42 87.06 80.60 66.16 47.47 41.07 a 61.61
1992 43.19 48.31 57.90 61.03 74.48 ----- z 82.19 87.29 75.40 66.23 46.43 35.61 61.64
1993 30.39 35.07 50.13 55.97 69.87 70.23 74.84 79.61 79.03 65.52 44.63 40.29 57.97
1994 47.16 44.61 56.32 61.70 69.45 75.27 90.06 84.90 80.00 62.06 41.20 42.42 62.93
1995 38.94 51.21 49.48 56.27 66.84 71.17 81.45 80.16 79.40 61.35 52.70 37.48 60.54
1996 41.13 43.38 52.06 59.27 62.61 75.57 88.35 86.52 73.10 61.42 49.37 40.45 61.10
1997 40.68 41.71 52.42 55.13 71.48 73.03 82.55 83.61 73.40 59.84 47.37 41.42 60.22
1998 42.45 44.43 53.19 56.80 60.81 73.83 89.19 88.39 81.63 62.13 46.83 40.32 61.67
1999 44.94 42.57 47.81 54.63 63.23 72.47 84.29 83.52 75.73 65.84 53.03 43.03 60.92
2000 37.74 42.21 49.16 61.50 60.06 74.23 84.48 87.16 75.27 59.97 38.27 37.13 58.93
2001 36.68 40.04 53.55 54.40 74.19 70.63 82.48 86.35 79.40 61.81 47.90 37.71 60.43
2002 38.68 47.39 49.58 61.07 65.03 76.83 87.77 81.45 76.53 61.23 54.19 i 40.97 62.41
2003 44.90 43.89 51.39 53.30 64.16 79.70 91.65 84.97 79.33 66.55 41.79 a 38.61 h 63.78
2004 36.77 43.03 56.79 g 63.07 65.88 n 76.23 86.39 83.13 70.27 61.00 48.83 42.71 61.14
2005 40.26 45.14 54.61 54.00 63.00 69.73 87.29 85.58 71.80 61.00 41.60 35.06 59.09
2006 42.39 48.50 l 45.74 57.63 67.52 77.03 87.61 83.52 76.73 61.87 47.20 40.16 62.49
2007 38.32 45.18 57.35 56.10 70.42 74.97 86.81 83.06 72.17 57.39 47.80 37.74 60.61
2008 36.74 45.52 47.45 51.93 65.16 73.17 86.87 83.19 76.07 62.45 51.73 36.16 59.70
2009 43.13 42.79 44.61 57.87 67.67 a 74.83 88.48 84.84 78.43 56.00 47.53 34.26 60.04
2010 42.16 43.22 e 51.55 54.20 e 58.94 69.77 85.06 m 81.61 72.07 60.84 45.63 39.03 56.27
2011 46.29 c 41.32 47.23 50.14 b 59.42 70.13 79.94 85.97 80.70 61.71 47.53 44.61 59.58
2012 44.81 43.93 47.71 58.67 65.13 67.65 j 84.31 b 87.16 77.89 b 61.58 48.96 b 38.71 59.90
2013 39.48 46.12 b 51.66 b 64.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 19.00 z 45.75
Period of Record Statistics
MEAN 41.08 45.11 51.11 56.98 65.47 74.47 84.44 83.49 75.35 62.83 47.53 40.48 60.76
S.D. 3.43 3.81 3.18 4.24 4.02 3.85 3.65 3.66 4.06 3.10 3.58 3.44 1.07
SKEW -0.68 -0.16 0.20 0.01 0.24 0.06 -0.36 0.03 -0.15 0.07 -0.47 -0.05 -0.45
MAX 47.16 53.00 57.90 65.97 74.48 83.37 91.87 91.52 81.73 69.81 55.37 48.32 62.93
MIN 30.39 35.07 44.61 46.87 58.45 63.86 74.84 76.32 68.03 56.00 38.27 33.68 57.97
NO YRS 49 47 50 51 47 50 52 53 53 51 50 48 34