BONNEVILLE DAM, OREGON

Period of Record General Climate Summary - Precipitation

Station:(350897) BONNEVILLE DAM
From Year=1937 To Year=2012
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >=
0.01 in.		 >=
0.10 in.		 >=
0.50 in.		 >=
1.00 in.		 Mean High Year
in. in. - in. - in. dd/yyyy
or
yyyymmdd		 # Days # Days # Days # Days in. in. -
January 11.32 30.74 1953 0.32 1985 4.12 15/1956 20 16 8 4 8.5 81.5 1950
February 8.86 21.72 1961 1.23 1993 3.75 07/1996 18 14 6 2 2.8 31.5 1949
March 8.29 19.22 2011 2.13 1965 4.00 07/1957 20 16 6 2 0.7 19.5 1989
April 5.60 12.49 1993 0.99 1956 4.85 10/1981 17 12 4 1 0.0 0.0 1938
May 3.87 9.51 1960 0.62 1992 2.35 01/2001 14 9 2 0 0.0 0.0 1938
June 2.84 8.76 1981 0.14 1940 2.74 08/1981 10 7 2 0 0.0 0.0 1938
July 0.85 5.90 1983 0.00 1938 1.60 14/1983 5 2 0 0 0.0 0.0 1939
August 1.27 6.67 1968 0.00 1955 2.08 26/1956 5 3 1 0 0.0 0.0 1938
September 2.80 6.65 1972 0.00 1942 2.48 30/1951 8 5 2 1 0.0 0.0 1938
October 6.57 17.37 1947 0.10 1987 4.73 11/1959 14 11 5 2 0.0 0.0 1938
November 11.71 28.96 2006 2.45 1952 5.08 07/2006 20 16 8 4 0.7 10.3 1985
December 12.67 27.94 1996 3.44 1985 6.23 27/1937 21 17 9 4 2.9 18.5 1948
Annual 76.66 118.61 1996 47.30 1944 6.23 19371227 172 127 54 20 15.7 92.5 1950
Winter 32.85 56.52 1953 12.30 1977 6.23 19371227 59 46 24 10 14.2 92.0 1950
Spring 17.77 36.81 2011 9.15 1965 4.85 19810410 51 37 13 3 0.7 19.5 1989
Summer 4.97 11.89 1968 0.64 2003 2.74 19810608 20 12 3 1 0.0 0.0 1941
Fall 21.08 37.14 1950 4.14 1952 5.08 20061107 42 32 15 6 0.7 10.3 1985
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