MASON DAM, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(355258)

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
1969 ----- z ----- z 15.87 28.40 36.32 42.37 41.90 40.10 37.93 27.03 21.77 20.06 31.18
1970 17.10 19.57 21.81 24.97 33.90 44.67 45.26 40.68 32.33 26.19 25.27 10.52 28.52
1971 13.87 17.25 15.81 26.57 36.23 38.27 43.90 46.52 32.43 26.74 23.57 11.10 27.69
1972 11.48 14.24 25.10 27.30 35.13 41.67 44.32 44.90 34.67 28.35 26.10 10.74 28.67
1973 8.74 17.75 23.68 26.93 32.84 39.03 43.46 e 42.68 36.70 28.81 23.23 20.87 28.73
1974 7.71 14.71 21.35 28.13 32.48 41.40 43.23 38.74 h 31.57 b 23.81 21.23 12.29 25.27
1975 7.26 7.21 14.42 20.33 32.71 38.03 46.42 39.29 35.80 32.42 20.30 18.29 26.04
1976 11.42 12.76 15.65 26.67 33.45 37.57 45.55 44.90 40.19 d 28.90 29.27 d 15.39 28.48
1977 9.13 18.25 21.38 b 27.53 33.19 42.50 42.97 47.13 38.47 30.48 22.77 24.33 a 29.84
1978 20.74 24.25 27.87 30.67 34.56 d 39.87 45.61 43.35 38.20 28.94 21.20 8.32 30.30
1979 -0.81 20.07 23.30 a 29.19 d 34.04 f 39.17 42.83 a 46.10 39.07 33.10 a 21.41 a 21.62 j 29.34
1980 13.90 a 24.50 a 24.53 a 30.72 a 36.45 39.10 a 44.61 c 39.47 a 39.72 a 30.94 23.50 h 20.32 31.30
1981 23.77 19.21 26.34 b 30.73 36.74 40.40 42.23 45.90 38.21 a 30.42 27.43 21.84 31.94
1982 11.45 10.75 22.87 25.03 32.06 43.20 44.94 45.19 39.13 32.45 20.83 18.16 28.84
1983 20.81 23.18 28.61 27.37 34.94 38.07 43.19 48.29 35.00 31.16 27.03 11.81 30.79
1984 12.65 12.00 24.94 28.43 33.39 38.47 44.06 46.55 36.23 28.87 22.40 6.19 27.85
1985 3.16 -0.11 13.74 30.00 35.26 38.53 43.58 42.23 34.73 29.13 13.90 2.81 23.91
1986 13.29 22.50 28.13 28.00 35.39 43.47 41.00 47.06 36.00 30.32 26.83 16.87 30.74
1987 7.45 13.29 24.77 31.03 37.94 42.23 44.90 41.77 38.23 27.84 24.87 15.29 29.14
1988 9.77 a 13.96 e 22.00 30.17 34.94 43.17 44.71 42.13 36.07 33.13 26.30 8.71 28.75
1989 8.65 -0.39 21.27 a 30.63 34.03 40.23 43.94 43.16 36.37 31.03 25.83 17.65 27.70
1990 18.35 12.61 24.13 31.73 33.32 39.87 45.74 46.77 41.20 31.35 24.93 5.48 29.63
1991 9.13 23.96 24.29 28.37 33.74 37.80 45.19 46.65 39.03 28.77 25.23 20.26 30.20
1992 17.35 25.41 27.71 32.40 36.55 44.70 44.74 45.06 37.93 32.16 22.30 9.45 31.31
1993 2.35 8.36 24.06 28.67 39.48 39.37 38.39 43.00 37.20 33.97 16.43 19.42 27.56
1994 19.32 14.71 23.19 32.90 39.16 40.73 47.16 44.90 39.97 29.94 19.57 12.55 30.34
1995 18.32 22.07 24.06 29.33 36.26 41.27 46.65 41.77 39.50 28.94 27.77 20.52 31.37
1996 16.32 12.76 24.00 30.53 33.81 40.10 45.61 43.94 36.10 30.74 26.20 17.58 29.81
1997 14.94 16.75 23.74 28.80 38.00 41.00 45.97 46.77 41.53 30.10 27.77 15.53 a 30.91
1998 17.65 18.04 22.35 30.13 38.06 41.67 50.13 46.68 44.97 29.32 27.97 a 14.74 31.81
1999 16.23 a 10.23 b 19.58 25.29 b 31.92 g 38.85 c 41.13 47.00 a 35.47 30.06 30.40 16.90 28.29
2000 13.90 20.52 21.65 30.33 36.19 41.03 a 44.77 43.90 38.07 32.00 19.27 15.73 i 31.06
2001 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2002 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2003 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2004 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2005 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2008 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 14.45 17.96 b 24.74 27.47 31.45 b 42.50 z 43.89 v 47.23 41.50 34.10 23.47 17.26 27.96
2012 16.90 a 18.21 26.16 31.34 a 33.52 39.90 48.81 46.06 39.73 31.61 30.86 i 19.06 31.94
2013 5.48 17.41 a 23.65 30.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 15.51
Period of Record Statistics
MEAN 12.71 16.00 22.76 28.71 35.05 40.54 44.45 44.46 37.63 30.09 23.84 15.01 29.26
S.D. 5.69 6.27 3.79 2.52 2.08 1.98 2.23 2.49 2.84 2.27 3.70 5.31 1.84
SKEW -0.33 -0.82 -0.90 -1.02 0.40 0.43 -0.08 -0.55 0.02 -0.46 -0.59 -0.48 -0.89
MAX 23.77 25.41 28.61 32.90 39.48 44.70 50.13 48.29 44.97 34.10 30.40 24.33 31.94
MIN -0.81 -0.39 13.74 20.33 31.45 37.57 38.39 39.29 31.57 23.81 13.90 2.81 23.91
NO YRS 34 34 35 34 32 33 33 33 34 34 32 32 26