MC MILLIN RESERVOIR, WASHINGTON

Period of Record General Climate Summary - Temperature

Station:(455224) MC MILLIN RESERVOIR
From Year=1941 To Year=2006
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 44.6 31.4 38.0 66 20/2005 0 18/1950 44.0 2003 25.8 1950 0.0 1.6 16.3 0.0
February 48.5 32.9 40.7 67 03/1962 3 01/1950 46.8 1963 32.8 1989 0.0 0.2 13.3 0.0
March 52.5 34.9 43.7 79 30/2004 9 05/1955 50.4 1941 38.2 1955 0.0 0.0 10.6 0.0
April 57.9 38.2 48.0 83 15/1984 25 08/1952 52.9 1941 43.5 1975 0.0 0.0 4.5 0.0
May 64.3 43.2 53.7 92 29/1983 26 01/1954 58.6 1958 50.2 1999 0.0 0.0 0.6 0.0
June 69.1 47.8 58.5 97 10/1955 32 03/1976 63.0 1992 54.6 1971 0.3 0.0 0.0 0.0
July 75.2 50.7 63.0 98 29/1958 36 03/1949 68.4 1941 58.4 1955 1.1 0.0 0.0 0.0
August 75.4 51.0 63.2 100 10/1981 37 29/1980 67.1 1967 59.3 1955 0.9 0.0 0.0 0.0
September 70.0 47.0 58.5 95 03/1988 29 27/1972 62.6 1967 55.0 1972 0.2 0.0 0.1 0.0
October 60.1 41.4 50.8 86 02/1987 21 28/1971 55.0 1944 47.6 1949 0.0 0.0 2.8 0.0
November 50.4 36.0 43.2 73 01/1949 0 15/1955 49.7 1949 33.7 1985 0.0 0.3 9.7 0.0
December 45.3 32.6 38.9 66 25/2005 -1 23/1983 44.3 1950 32.0 1983 0.0 0.9 14.9 0.0
Annual 59.4 40.6 50.0 100 19810810 -1 19831223 52.6 1958 47.1 1955 2.5 3.0 72.8 0.1
Winter 46.1 32.3 39.2 67 19620203 -1 19831223 43.4 1958 33.9 1949 0.0 2.7 44.5 0.0
Spring 58.2 38.7 48.5 92 19830529 9 19550305 53.0 1941 44.2 1955 0.0 0.0 15.7 0.0
Summer 73.2 49.8 61.5 100 19810810 32 19760603 65.4 1958 57.9 1954 2.3 0.0 0.0 0.0
Fall 60.2 41.4 50.8 95 19880903 0 19551115 53.2 1967 46.2 1985 0.2 0.3 12.6 0.0
Table updated on Jul 28, 2006
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