TROUTDALE SUBSTATION, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(358634)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z 53.19 54.37 a 47.07 42.61 35.60 32.03 44.15
1949 22.61 33.82 38.40 a 40.63 47.55 47.33 51.97 53.48 50.13 38.42 45.33 35.10 a 42.07
1950 20.03 31.54 37.35 38.83 a 41.58 50.87 51.71 53.16 46.20 45.07 a 40.53 40.58 41.45
1951 34.32 34.96 34.13 41.67 45.52 49.23 53.61 50.52 50.63 45.06 40.03 32.94 42.72
1952 30.58 34.14 36.58 39.30 44.68 49.83 52.68 54.10 a 49.31 a 48.16 36.07 37.10 42.71
1953 42.47 a 35.89 37.68 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.93 a 38.23 39.84
1954 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1955 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1956 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1957 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1958 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1959 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 52.20 f 50.97 44.97 36.38 a 35.58 41.97
1960 28.97 35.52 b 35.68 41.70 45.37 a 49.47 52.23 52.84 49.27 44.77 38.63 34.32 f 43.13
1961 37.53 a 40.86 39.84 40.73 47.77 a 52.29 b 54.55 55.70 a 47.07 42.58 34.83 34.77 a 44.04
1962 32.03 34.00 36.55 42.63 45.71 48.97 52.08 e 53.90 49.73 44.00 41.13 36.81 43.13
1963 28.42 39.71 37.48 40.97 45.74 50.27 53.31 r 53.65 51.30 45.06 41.43 35.61 42.70
1964 35.97 32.03 37.35 38.23 42.42 48.93 52.58 g 50.74 d 47.43 46.26 36.97 31.58 40.72
1965 35.61 36.46 38.06 41.03 43.55 49.62 a 54.57 c 56.35 47.43 47.17 b 44.13 33.77 43.98
1966 36.26 36.07 37.45 43.40 44.32 50.00 52.65 52.06 49.80 42.16 40.77 39.48 43.70
1967 39.77 36.04 36.87 38.63 45.38 b 53.70 54.26 55.65 51.70 46.35 40.13 35.97 44.54
1968 33.68 40.34 41.13 39.47 46.52 51.73 55.10 55.48 51.31 a 44.87 a 41.33 34.15 d 44.59
1969 26.42 35.54 37.45 42.23 47.61 56.47 53.87 52.45 51.57 44.70 a 41.77 38.32 44.03
1970 34.26 39.39 37.81 39.30 44.27 a 52.70 53.97 53.35 48.83 43.58 41.27 34.87 43.63
1971 35.71 36.86 35.06 40.03 45.90 49.63 55.00 56.97 49.10 43.45 40.03 35.42 43.60
1972 32.77 35.54 a 40.29 38.50 47.16 51.90 56.03 54.45 47.52 c 42.00 42.17 a 30.61 43.25
1973 32.32 36.71 39.71 41.37 47.80 a 52.23 54.55 51.84 51.18 b 45.16 38.97 40.06 44.33
1974 31.61 37.36 38.06 43.17 45.71 51.90 54.35 55.52 52.77 42.81 41.76 a 39.58 44.55
1975 35.68 34.64 36.72 b 37.47 45.45 51.43 56.10 53.81 52.87 47.55 39.33 37.71 44.06
1976 37.29 36.71 a 36.48 41.97 46.13 50.53 54.68 55.45 52.60 44.48 41.47 34.94 44.39
1977 31.26 37.86 37.61 41.23 44.81 52.07 53.77 57.87 50.60 46.00 36.87 38.16 44.01
1978 35.26 40.14 39.29 42.40 ----- z 54.17 55.68 55.29 52.33 46.84 33.60 31.84 44.26
1979 23.74 34.36 40.10 42.80 46.58 51.27 55.71 55.13 52.80 48.16 38.53 38.29 43.96
1980 29.55 36.66 39.26 43.67 47.50 e 51.56 e 55.78 d 52.26 d 49.08 d 43.15 e 41.21 f 36.38 e 44.08
1981 40.62 e 36.04 d 40.74 d 41.42 d 46.00 f 51.38 d 54.67 d 55.62 e 50.36 e 44.15 e 42.12 f 37.50 e 45.25
1982 33.58 36.07 37.35 39.13 45.13 52.47 53.58 54.87 51.80 45.87 37.43 35.32 43.55
1983 36.94 40.71 43.00 41.31 a 49.67 m 50.97 54.52 56.10 48.40 41.97 b 43.93 29.97 44.35
1984 34.94 36.45 42.52 41.73 46.23 50.37 53.87 53.35 50.57 44.16 40.47 32.58 43.94
1985 29.37 a 31.64 34.58 41.43 45.61 50.23 55.94 52.71 47.43 41.52 30.66 a 25.62 b 40.56
1986 33.68 37.13 m 42.14 j 40.23 44.45 k 53.10 52.78 m 55.67 j 48.73 42.95 i 39.93 32.81 41.41
1987 32.06 38.07 39.57 a 43.07 48.13 51.30 54.13 52.58 48.93 43.29 42.23 31.87 43.77
1988 31.74 34.28 36.80 a 41.10 44.81 48.80 51.65 49.90 46.73 47.74 41.30 36.58 42.62
1989 36.13 27.21 37.58 43.40 46.74 51.40 47.81 ----- z 42.80 39.77 42.96 d 34.74 40.96
1990 39.32 35.36 40.10 43.89 b 46.65 53.20 56.23 57.61 53.53 43.32 41.13 28.39 44.89
1991 31.70 a ----- z 37.26 42.20 45.90 49.03 55.06 56.61 50.20 44.48 41.03 37.52 44.64
1992 38.65 42.59 40.81 46.30 48.39 53.20 56.45 54.96 h 48.90 44.13 39.27 31.58 44.57
1993 29.26 34.39 40.06 44.47 51.23 53.00 55.65 56.68 49.97 47.16 32.13 34.32 44.03
1994 39.00 34.25 40.74 44.90 50.74 51.80 57.03 55.81 54.27 42.29 36.47 35.06 45.20
1995 37.06 38.93 40.39 42.53 49.52 53.50 58.29 54.52 ----- z 46.61 44.43 38.00 m 46.58
1996 34.05 l 32.58 j 37.40 k 42.52 i 43.71 n 48.84 k 53.41 n 52.74 l 46.20 o 45.20 k 37.00 k 33.06 m 9999.00
1997 32.45 i 35.33 m 37.93 q 40.33 i 48.90 j 51.39 l 53.56 o 55.83 m 50.87 o 40.86 j 36.24 m 34.85 k 9999.00
1998 33.35 n 37.05 i 38.58 l 41.00 i 45.74 l 50.32 k 55.37 l 56.80 p 48.17 r 44.33 m 42.78 l 34.87 p 9999.00
1999 36.29 n 36.46 o 36.14 q 37.31 n 42.00 u 49.74 k 53.22 m 56.17 s 46.50 z 44.10 44.70 40.65 43.15
2000 35.55 37.79 37.45 43.00 48.45 51.63 55.19 53.68 52.23 46.26 36.20 35.23 a 44.39
2001 35.87 34.11 38.97 41.33 45.84 50.73 54.81 55.48 50.70 42.77 41.33 37.35 44.11
2002 36.19 37.79 37.48 42.33 44.68 50.87 53.23 53.16 48.63 43.90 32.67 37.68 43.22
2003 38.52 33.96 39.97 41.53 45.23 51.00 53.84 53.71 51.60 49.06 38.13 33.45 44.17
2004 30.03 34.21 40.16 43.20 48.81 51.67 55.81 55.35 49.97 43.84 36.60 ----- z 44.51
2005 ----- z 30.50 36.45 40.23 47.48 47.47 52.65 49.97 41.93 44.26 33.43 29.90 41.30
2006 35.10 30.32 34.61 37.97 ----- z 47.23 49.90 47.19 45.10 35.19 30.90 ----- z 39.35
2007 ----- z 30.14 32.39 c 33.30 36.71 41.97 48.42 54.45 49.03 43.74 37.93 35.16 40.30
2008 32.48 36.21 35.42 37.97 46.90 48.20 52.68 54.84 49.57 42.90 43.07 31.23 42.62
2009 33.42 34.75 36.42 39.53 44.48 52.87 55.45 55.81 53.10 44.65 40.40 31.55 43.54
2010 39.77 38.46 39.94 41.30 43.71 49.33 52.90 53.13 53.73 46.97 41.74 g 37.39 45.15
2011 35.35 33.04 38.97 38.37 k 43.45 50.53 53.19 55.16 53.10 48.13 37.70 32.71 43.76
2012 33.55 36.76 36.77 a 43.59 a 45.03 49.90 54.90 55.68 49.63 45.94 43.14 a 37.39 44.36
2013 32.06 36.07 39.60 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.91
Period of Record Statistics
MEAN 33.70 35.72 38.12 41.23 45.93 50.85 54.04 54.12 49.84 44.43 39.33 34.97 43.65
S.D. 4.45 2.97 2.13 2.23 2.35 2.20 1.97 2.09 2.55 2.47 3.61 3.21 0.96
SKEW -0.80 -0.27 -0.13 -0.74 -0.94 -1.02 -0.94 -0.87 -0.81 -0.96 -0.58 -0.46 -1.25
MAX 42.47 42.59 43.00 46.30 51.23 56.47 58.29 57.87 54.27 49.06 45.33 40.65 45.20
MIN 20.03 27.21 32.39 33.30 36.71 41.97 47.81 47.19 41.93 35.19 30.66 25.62 40.56
NO YRS 53 53 54 52 48 53 51 51 54 55 54 53 35