LOWER MONUMENTAL DAM, WASHINGTON

Period of Record General Climate Summary - Temperature

Station:(454841) LOWER MONUMENTAL DAM
From Year=1962 To Year=2007
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 40.1 27.3 33.7 65 21/1968 -6 01/1979 42.4 1967 16.1 1979 0.0 6.5 19.1 0.4
February 49.0 32.5 40.8 70 13/1977 9 04/1972 44.3 1968 35.8 1969 0.0 0.8 12.9 0.0
March 56.5 35.7 46.1 78 31/1964 17 18/1965 50.5 1968 42.3 1976 0.0 0.0 8.6 0.0
April 63.6 41.1 52.4 91 25/1977 28 19/1966 56.2 1965 48.1 1975 0.1 0.0 1.2 0.0
May 73.7 48.1 60.9 102 06/1966 36 05/1965 64.8 1969 57.6 1978 1.4 0.0 0.0 0.0
June 82.2 55.6 68.9 106 24/1970 40 01/1966 74.7 1969 63.3 1971 7.0 0.0 0.0 0.0
July 90.9 61.8 76.3 111 11/1975 47 30/1963 80.4 1968 72.3 1963 17.1 0.0 0.0 0.0
August 90.3 61.3 75.8 109 02/1965 44 31/1964 82.3 1967 70.7 1978 17.0 0.0 0.0 0.0
September 80.4 53.3 66.8 105 01/1967 31 29/1974 73.2 1967 62.3 1970 5.5 0.0 0.1 0.0
October 67.2 42.4 54.8 88 02/1976 22 29/1971 59.2 1965 52.5 1978 0.0 0.0 1.4 0.0
November 50.8 36.0 43.4 73 01/1967 13 21/1977 46.7 1965 34.9 1978 0.0 0.4 7.8 0.0
December 42.1 30.1 36.2 62 11/1968 -14 30/1968 41.9 1966 29.9 1972 0.0 4.7 16.6 0.6
Annual 65.6 43.8 54.7 111 19750711 -14 19681230 57.2 1967 52.2 1978 48.0 12.5 67.7 1.1
Winter 43.8 30.0 36.9 70 19770213 -14 19681230 42.8 1967 31.6 1969 0.0 12.0 48.6 1.1
Spring 64.6 41.6 53.1 102 19660506 17 19650318 55.6 1966 50.1 1975 1.4 0.0 9.8 0.0
Summer 87.8 59.5 73.7 111 19750711 40 19660601 78.1 1967 70.5 1976 41.1 0.0 0.0 0.0
Fall 66.1 43.9 55.0 105 19670901 13 19771121 58.5 1963 50.0 1978 5.5 0.4 9.3 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