HEADWORKS PORTLAND W, OREGON

Period of Record General Climate Summary - Temperature

Station:(353770) HEADWORKS PTLD WTR BUR
From Year=1899 To Year=2012
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest
Mean		 Year Lowest
Mean		 Year >=
90 F		 <=
32 F		 <=
32 F		 <=
0 F
F F F F dd/yyyy
or
yyyymmdd		 F dd/yyyy
or
yyyymmdd		 F - F - # Days # Days # Days # Days
January 43.6 33.0 38.3 63 29/1984 1 12/1909 46.1 1981 26.3 1950 0.0 1.6 13.7 0.0
February 48.1 34.5 41.3 74 29/1968 5 03/1989 48.8 1992 32.9 1936 0.0 0.2 10.3 0.0
March 53.2 36.2 44.8 84 27/1930 19 01/1971 52.8 1934 38.4 1951 0.0 0.0 7.3 0.0
April 59.6 39.2 49.4 93 27/1926 28 18/1909 57.2 1926 43.6 1912 0.0 0.0 2.0 0.0
May 66.0 43.8 54.9 99 28/1983 28 01/1954 62.3 1992 48.3 1899 0.4 0.0 0.1 0.0
June 71.2 48.6 59.9 104 15/1961 33 06/1950 68.7 1921 55.5 1914 1.1 0.0 0.0 0.0
July 78.4 51.9 65.1 110 13/1935 30 16/1911 70.8 1906 60.2 1909 3.2 0.0 0.0 0.0
August 77.9 52.1 65.0 107 02/1939 31 06/1913 71.6 1967 58.0 1912 3.1 0.0 0.0 0.0
September 72.5 48.8 60.7 104 02/1988 29 18/1911 65.9 1991 49.1 1911 1.2 0.0 0.0 0.0
October 62.3 44.0 53.2 94 01/1987 22 30/1935 59.0 1987 46.2 1949 0.0 0.0 0.7 0.0
November 51.1 38.4 44.7 79 05/1949 11 15/1955 50.1 1995 36.4 1985 0.0 0.1 4.9 0.0
December 44.6 34.5 39.5 63 14/1977 -2 12/1919 45.1 1958 31.3 1919 0.0 0.9 10.7 0.0
Annual 60.7 42.1 51.4 110 19350713 -2 19191212 55.5 1992 48.2 1916 9.2 2.9 49.8 0.0
Winter 45.4 34.0 39.7 74 19680229 -2 19191212 45.3 1992 32.4 1949 0.0 2.7 34.6 0.0
Spring 59.6 39.7 49.7 99 19830528 19 19710301 56.1 1992 44.7 1917 0.4 0.0 9.4 0.0
Summer 75.8 50.9 63.3 110 19350713 30 19110716 67.5 1992 59.1 1954 7.5 0.0 0.0 0.0
Fall 62.0 43.7 52.8 104 19880902 11 19551115 56.2 1991 46.0 1911 1.3 0.2 5.7 0.0
Table updated on Oct 31, 2012
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov. 






Western Regional Climate Center, wrcc@dri.edu