PORTLAND WB CITY, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(356749)

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
1973 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 53.26 53.63 46.74 39.53 40.55 46.74
1974 33.29 37.71 39.42 43.47 46.58 53.43 56.45 56.42 55.77 45.84 42.27 38.90 45.80
1975 36.48 35.25 38.16 38.97 47.10 51.33 56.71 53.97 54.73 48.16 40.87 38.90 45.05
1976 38.55 36.31 37.68 42.43 47.48 50.80 55.84 56.65 55.20 47.55 42.23 35.97 45.56
1977 32.06 39.79 38.16 43.37 45.87 53.47 54.52 59.48 53.40 47.45 39.00 ----- z 46.05
1978 37.81 41.75 42.97 43.39 b 46.77 56.07 57.84 57.47 a 53.63 48.00 35.20 32.39 46.11
1979 26.58 37.11 42.58 44.23 49.48 53.40 58.19 ----- z ----- z ----- z 39.70 40.04 d 43.48
1980 31.32 38.79 39.68 44.87 48.90 51.70 56.94 55.10 53.27 47.81 42.93 39.32 45.89
1981 40.42 37.61 41.10 44.43 48.84 52.73 56.19 59.13 52.87 45.13 41.43 37.87 46.48
1982 34.97 36.93 38.55 39.90 46.84 53.63 54.77 56.84 52.83 46.45 37.33 36.13 44.60
1983 38.87 41.61 43.81 42.53 50.10 52.37 56.19 57.90 51.30 46.35 43.60 31.52 46.35
1984 37.68 39.21 42.71 42.37 46.94 50.83 55.71 56.26 52.83 45.84 40.17 34.10 45.39
1985 32.16 ----- z 37.81 44.70 48.23 52.43 58.52 56.39 51.33 46.19 ----- z 29.81 45.76
1986 39.68 39.18 44.42 42.67 48.10 a 56.13 54.97 59.58 52.90 48.81 43.17 37.06 47.22
1987 36.29 40.93 42.48 45.40 50.77 54.37 56.87 58.39 55.07 49.45 43.93 35.61 47.46
1988 34.84 38.97 39.58 44.87 47.03 52.20 56.77 56.65 52.87 52.23 42.30 37.39 46.31
1989 37.87 30.21 39.81 47.07 48.77 54.80 55.48 56.39 53.53 47.61 42.90 36.39 45.90
1990 38.87 36.14 42.13 45.50 ----- z 53.97 58.77 59.55 57.50 46.10 42.77 30.10 46.49
1991 35.55 43.54 38.97 43.30 46.81 51.17 ----- z 58.19 56.20 46.84 42.97 39.32 45.71
1992 40.45 43.52 43.94 47.87 52.10 56.23 59.65 58.52 53.43 49.52 42.03 35.55 48.57
1993 32.74 35.29 41.58 45.33 51.61 53.33 55.10 58.06 54.07 49.81 35.00 36.19 45.68
1994 39.84 35.79 42.19 45.93 50.52 52.13 57.00 57.81 56.67 46.16 37.20 38.32 46.63
1995 39.90 40.79 40.61 43.00 50.13 53.73 59.45 55.74 57.90 47.58 47.80 38.74 47.95
1996 36.52 35.93 40.90 45.67 47.32 52.53 59.29 58.87 52.10 46.87 40.13 37.45 46.13
1997 37.48 37.75 40.55 44.17 52.65 53.67 57.16 60.29 56.13 47.71 44.93 38.19 47.56
1998 38.19 41.43 42.87 44.40 49.61 53.70 60.35 58.81 55.67 47.68 44.20 36.19 47.76
1999 38.26 39.25 38.90 41.52 a 45.55 b 51.89 b 55.74 58.79 b 53.07 46.81 45.20 44.87 a 46.65
2000 36.19 39.76 39.06 44.80 48.42 53.08 d 57.34 b 56.19 53.77 48.03 38.45 a 36.39 45.96
2001 37.47 a 36.50 41.10 42.10 47.94 50.47 55.42 57.52 54.57 46.74 43.97 a 39.03 46.07
2002 38.23 38.79 38.26 44.27 46.32 53.87 57.77 57.03 53.83 46.71 42.73 40.19 46.50
2003 42.03 39.36 42.81 43.27 48.26 55.13 58.00 57.94 56.00 50.10 b 39.63 38.58 47.59
2004 34.07 c 40.38 43.29 45.70 51.13 54.63 59.26 60.29 54.80 49.77 40.80 39.68 47.82
2005 39.16 37.18 42.68 44.97 52.06 52.83 58.23 58.10 53.33 49.90 39.30 36.52 47.02
2006 41.16 37.14 39.29 43.97 ----- z 56.13 58.81 56.94 53.97 ----- z 42.40 ----- z 47.76
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 55.77 46.97 41.73 32.94 44.35
2010 42.48 41.68 41.52 42.97 46.39 50.57 55.87 57.96 f 55.20 48.45 40.27 38.90 45.84
2011 37.55 35.14 40.81 40.07 45.26 52.77 55.77 58.57 a 57.39 b 49.19 39.53 33.90 45.50
2012 36.63 a 38.59 38.39 44.87 47.26 51.97 56.42 57.97 53.93 a 48.90 43.73 37.97 46.39
2013 33.29 38.86 45.40 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 36.07
Period of Record Statistics
MEAN 36.89 38.45 40.80 43.84 48.45 53.15 57.07 57.57 54.34 47.76 41.39 36.97 46.48
S.D. 3.32 2.67 1.98 1.88 2.02 1.60 1.55 1.62 1.65 1.53 2.72 3.08 0.95
SKEW -0.85 -0.46 0.05 -0.52 0.48 0.29 0.31 -0.61 0.34 0.71 -0.34 -0.38 0.23
MAX 42.48 43.54 44.42 47.87 52.65 56.23 60.35 60.29 57.90 52.23 47.80 44.87 48.57
MIN 26.58 30.21 37.68 38.97 45.26 50.47 54.52 53.26 51.30 45.13 35.00 29.81 44.60
NO YRS 37 36 36 36 34 36 35 35 37 36 37 36 29