PORTLAND WB CITY, OREGON

Monthly Extreme 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 46.00 44.00 41.00 32.00 33.00 32.00
1974 15.00 32.00 27.00 38.00 38.00 45.00 49.00 49.00 46.00 38.00 35.00 31.00 15.00
1975 25.00 28.00 31.00 31.00 37.00 44.00 49.00 47.00 48.00 42.00 30.00 31.00 25.00
1976 30.00 28.00 27.00 35.00 40.00 41.00 48.00 50.00 46.00 39.00 29.00 28.00 27.00
1977 21.00 34.00 32.00 34.00 40.00 42.00 47.00 52.00 47.00 40.00 24.00 ----- z 21.00
1978 22.00 34.00 34.00 36.00 b 36.00 48.00 51.00 51.00 a 45.00 37.00 23.00 14.00 14.00
1979 12.00 18.00 35.00 39.00 41.00 44.00 51.00 ----- z ----- z ----- z 33.00 31.00 d 12.00
1980 16.00 27.00 33.00 35.00 41.00 45.00 53.00 47.00 46.00 40.00 36.00 26.00 16.00
1981 36.00 28.00 32.00 36.00 39.00 46.00 48.00 50.00 43.00 39.00 30.00 31.00 28.00
1982 18.00 24.00 33.00 33.00 38.00 44.00 47.00 47.00 41.00 39.00 30.00 26.00 18.00
1983 29.00 35.00 38.00 35.00 41.00 46.00 48.00 52.00 42.00 40.00 33.00 10.00 10.00
1984 24.00 30.00 35.00 35.00 42.00 43.00 48.00 50.00 42.00 37.00 31.00 18.00 18.00
1985 26.00 ----- z 32.00 37.00 36.00 45.00 52.00 49.00 45.00 35.00 ----- z 19.00 19.00
1986 33.00 30.00 37.00 35.00 38.00 a 49.00 50.00 53.00 45.00 43.00 35.00 30.00 30.00
1987 26.00 33.00 35.00 37.00 43.00 46.00 51.00 50.00 47.00 42.00 29.00 24.00 24.00
1988 27.00 23.00 32.00 34.00 39.00 42.00 48.00 49.00 44.00 41.00 33.00 28.00 23.00
1989 30.00 8.00 24.00 37.00 42.00 49.00 51.00 51.00 45.00 39.00 34.00 27.00 8.00
1990 32.00 15.00 31.00 34.00 ----- z 48.00 50.00 51.00 52.00 40.00 35.00 11.00 11.00
1991 27.00 36.00 33.00 34.00 40.00 41.00 ----- z 49.00 47.00 31.00 32.00 30.00 27.00
1992 31.00 30.00 38.00 39.00 40.00 48.00 55.00 52.00 46.00 39.00 33.00 27.00 27.00
1993 23.00 26.00 32.00 39.00 42.00 48.00 49.00 47.00 45.00 44.00 23.00 26.00 23.00
1994 31.00 25.00 35.00 40.00 42.00 48.00 49.00 53.00 49.00 39.00 29.00 27.00 25.00
1995 30.00 18.00 32.00 37.00 44.00 46.00 50.00 50.00 52.00 35.00 35.00 27.00 18.00
1996 16.00 16.00 32.00 38.00 37.00 46.00 47.00 51.00 42.00 38.00 30.00 29.00 16.00
1997 28.00 32.00 34.00 34.00 40.00 48.00 51.00 55.00 51.00 40.00 37.00 31.00 28.00
1998 22.00 34.00 32.00 37.00 45.00 49.00 55.00 52.00 49.00 37.00 37.00 17.00 17.00
1999 32.00 33.00 33.00 33.00 a 38.00 b 42.00 b 49.00 52.00 b 42.00 38.00 39.00 34.00 a 32.00
2000 32.00 33.00 31.00 35.00 39.00 46.00 d 49.00 b 50.00 42.00 42.00 28.00 a 29.00 28.00
2001 28.00 a 29.00 34.00 35.00 40.00 44.00 51.00 52.00 46.00 38.00 35.00 a 35.00 28.00
2002 31.00 32.00 30.00 38.00 38.00 44.00 49.00 50.00 47.00 31.00 32.00 34.00 30.00
2003 33.00 31.00 33.00 37.00 37.00 47.00 50.00 51.00 48.00 36.00 b 29.00 28.00 28.00
2004 15.00 c 35.00 37.00 37.00 46.00 47.00 53.00 56.00 48.00 41.00 32.00 33.00 15.00
2005 26.00 30.00 36.00 38.00 43.00 46.00 52.00 53.00 45.00 39.00 31.00 27.00 26.00
2006 34.00 24.00 31.00 36.00 ----- z 49.00 51.00 50.00 46.00 ----- z 28.00 ----- z 24.00
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 47.00 39.00 35.00 18.00 18.00
2010 37.00 34.00 35.00 37.00 38.00 43.00 49.00 49.00 f 48.00 41.00 19.00 26.00 19.00
2011 27.00 19.00 33.00 34.00 38.00 45.00 49.00 54.00 a 48.00 b 38.00 31.00 28.00 19.00
2012 30.00 a 32.00 29.00 35.00 37.00 44.00 48.00 49.00 48.00 a 41.00 36.00 25.00 25.00
2013 25.00 33.00 38.00 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 25.00
Period of Record Statistics
MEAN 26.49 28.03 32.72 35.94 39.85 45.50 49.91 50.57 46.05 38.86 31.43 26.36 21.52
S.D. 6.27 6.68 2.99 2.01 2.54 2.37 2.05 2.29 2.75 2.82 4.29 6.29 6.27
SKEW -0.62 -1.19 -0.63 -0.09 0.55 -0.19 0.78 0.12 0.17 -1.00 -0.86 -1.11 -0.43
MAX 37.00 36.00 38.00 40.00 46.00 49.00 55.00 56.00 52.00 44.00 39.00 35.00 30.00
MIN 12.00 8.00 24.00 31.00 36.00 41.00 47.00 46.00 41.00 31.00 19.00 10.00 8.00
NO YRS 37 36 36 36 34 36 35 35 37 36 37 36 27