PELTON DAM, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(356532)

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 54.71 g 43.07 o 35.97 a 32.13 32.19 33.43
1959 29.13 30.71 31.55 37.20 38.26 48.43 52.29 48.58 46.33 36.90 26.67 25.45 37.63
1960 18.77 27.72 31.87 37.03 39.26 46.90 51.81 48.71 43.37 35.84 30.65 d 26.39 36.53
1961 31.77 34.46 34.74 35.40 41.45 49.93 51.10 54.00 41.70 34.84 26.37 27.87 38.64
1962 21.13 28.68 30.94 36.53 40.32 44.50 48.68 49.16 43.63 36.74 34.30 28.84 36.95
1963 17.61 32.46 29.97 34.77 41.06 45.70 48.71 48.68 48.50 37.55 33.53 26.32 37.07
1964 28.23 22.55 27.35 31.60 38.61 48.47 51.61 49.26 41.50 35.74 32.30 26.30 a 36.13
1965 31.10 29.50 27.13 37.30 38.32 46.67 50.84 50.61 41.67 z 36.00 k 35.97 27.23 37.47
1966 28.10 28.46 29.81 33.47 41.10 46.40 51.42 49.87 46.63 36.87 35.13 31.77 38.25
1967 31.68 29.07 30.03 32.53 39.61 47.93 50.90 52.32 46.90 39.32 33.20 25.06 38.21
1968 26.52 32.00 33.84 33.30 41.68 46.97 52.23 52.00 44.83 36.16 32.73 26.00 38.19
1969 17.19 26.96 28.00 33.87 42.61 50.47 48.87 47.23 45.53 33.03 30.97 28.65 36.11
1970 26.55 30.29 30.58 31.47 38.87 49.00 50.71 48.10 40.27 33.13 31.70 27.90 36.55
1971 28.29 26.82 27.68 32.57 41.97 44.50 50.90 53.03 41.80 33.52 30.50 27.71 36.61
1972 24.81 27.90 33.32 32.17 41.77 47.83 51.42 50.74 41.00 34.03 34.20 19.16 36.53
1973 23.68 30.00 28.90 33.87 41.81 47.90 50.42 47.93 a 44.83 37.74 33.80 33.16 37.84
1974 21.52 29.21 32.23 35.13 38.81 48.30 51.66 b 50.84 42.70 34.00 33.77 28.94 37.26
1975 29.16 25.93 28.84 30.40 38.61 44.97 53.81 48.23 42.63 39.84 30.90 31.26 37.05
1976 27.45 27.21 27.90 33.77 39.52 42.43 51.84 51.97 47.13 34.32 34.79 a 21.90 36.69
1977 20.65 28.39 28.42 34.97 39.26 48.63 50.58 54.90 45.17 37.32 28.83 31.42 37.38
1978 28.81 32.61 33.48 36.00 38.35 47.17 50.42 50.90 44.20 34.71 23.57 21.29 36.79
1979 9.71 29.11 32.45 36.43 40.58 46.47 50.90 51.65 45.63 41.03 32.63 30.00 37.22
1980 23.57 a 31.00 ----- z 36.30 40.74 45.37 51.61 ----- z 45.20 36.42 33.90 30.29 37.44
1981 31.94 29.64 31.90 34.67 41.58 46.60 49.19 50.39 44.47 35.63 a 32.13 30.32 38.21
1982 24.87 27.71 30.26 31.37 38.00 48.83 51.71 50.71 45.17 36.74 28.63 27.71 36.81
1983 30.06 34.11 36.03 33.63 40.03 44.50 48.87 51.94 40.03 37.19 35.97 21.23 37.80
1984 24.87 31.07 34.52 34.83 39.81 44.10 49.97 51.06 43.23 34.61 32.47 23.55 37.01
1985 24.87 24.18 27.81 34.93 39.52 45.90 53.35 48.45 40.90 35.42 20.57 16.90 34.40
1986 29.19 31.04 a 35.61 31.43 40.33 a 48.43 47.68 51.35 41.70 34.87 34.03 28.13 37.82
1987 24.97 29.82 33.10 36.80 42.81 48.43 51.52 48.32 43.37 34.52 31.73 27.26 37.72
1988 24.45 b 25.75 a 28.58 37.77 39.94 46.57 49.58 45.97 40.33 40.74 33.37 25.35 36.53
1989 28.26 17.18 32.13 37.37 39.97 47.30 47.87 48.61 40.43 36.19 31.60 24.52 35.95
1990 31.39 25.96 30.58 38.03 39.94 48.37 52.90 53.26 46.67 37.06 32.53 17.58 37.86
1991 23.26 32.61 30.77 34.43 39.87 45.67 51.10 54.19 43.90 34.94 35.10 30.16 38.00
1992 30.77 35.07 32.03 38.43 43.52 49.90 51.55 49.97 44.87 38.35 32.93 23.94 39.28
1993 18.35 22.21 31.90 35.57 44.00 46.77 47.39 47.61 40.53 37.94 19.27 28.42 35.00
1994 27.23 25.07 29.29 37.40 43.06 46.30 50.71 48.55 46.37 35.84 29.90 27.81 37.29
1995 29.10 31.75 30.35 33.40 39.87 45.87 50.90 46.42 44.60 33.68 35.73 29.19 37.57
1996 28.42 24.72 31.10 35.50 37.90 43.53 48.65 47.94 39.47 35.13 27.70 25.61 35.47
1997 23.06 25.82 32.13 33.80 42.65 44.07 48.81 52.23 47.47 35.52 33.77 24.58 36.99
1998 28.16 32.68 32.97 34.50 42.32 46.83 54.35 50.26 ----- z 35.26 35.80 27.13 38.21
1999 29.71 31.68 30.74 31.53 37.32 44.53 48.29 53.19 39.27 34.48 36.77 30.13 37.30
2000 26.19 32.28 28.77 36.43 42.55 46.47 50.19 47.77 44.97 37.39 28.27 27.06 37.36
2001 27.45 27.04 30.00 32.23 40.39 44.80 49.16 51.45 45.00 36.42 33.14 a 29.16 37.19
2002 29.81 26.89 26.77 35.73 40.42 48.07 55.52 51.10 46.27 33.13 29.43 32.06 37.93
2003 36.26 28.36 36.19 36.17 43.77 51.27 56.77 55.65 48.93 43.39 31.23 30.65 41.55
2004 25.06 30.69 34.94 36.73 43.45 50.83 55.71 56.87 48.00 41.19 32.10 31.42 40.58
2005 28.03 26.11 33.94 38.63 47.06 46.20 54.55 53.03 43.97 38.65 31.10 20.97 38.52
2006 30.58 23.96 30.48 36.50 42.65 50.43 54.68 51.26 43.93 34.10 32.47 26.00 38.09
2007 23.13 28.61 32.19 33.73 42.32 48.27 57.81 51.23 45.07 36.57 a 29.93 b 29.10 38.16
2008 ----- z 28.30 f 28.13 31.03 43.68 45.69 a 53.81 54.06 44.63 ----- z 34.07 20.19 39.48
2009 25.26 27.64 29.71 33.87 42.23 50.17 55.42 54.19 47.33 35.29 30.43 22.42 37.83
2010 32.35 30.50 30.58 34.27 40.84 46.87 52.84 51.35 47.53 38.42 31.20 27.90 a 38.72
2011 26.84 25.89 a 32.77 32.97 39.10 46.24 a 49.48 52.52 47.77 38.13 28.33 21.35 36.78
2012 26.87 27.66 31.23 37.07 41.32 48.30 54.39 52.35 45.23 37.23 34.40 28.94 38.75
2013 21.16 25.32 31.26 38.50 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 14.00 z 25.91
Period of Record Statistics
MEAN 26.25 28.52 31.07 34.76 40.83 47.06 51.43 50.79 44.25 36.40 31.61 26.76 37.44
S.D. 4.64 3.37 2.37 2.12 1.93 1.99 2.38 2.43 2.54 2.22 3.51 3.83 1.22
SKEW -0.96 -0.58 0.24 -0.15 0.56 0.06 0.60 0.21 -0.25 0.89 -1.51 -0.69 0.64
MAX 36.26 35.07 36.19 38.63 47.06 51.27 57.81 56.87 48.93 43.39 36.77 33.16 41.55
MIN 9.71 17.18 26.77 30.40 37.32 42.43 47.39 45.97 39.27 33.03 19.27 16.90 34.40
NO YRS 54 54 54 54 54 54 54 53 52 53 55 55 50