ROSS DAM, WASHINGTON

Period of Record General Climate Summary - Precipitation

Station:(457185) ROSS DAM
From Year=1960 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 9.38 17.98 1974 0.60 1985 4.13 08/2009 18 14 7 3 16.6 55.0 1972
February 6.00 13.47 1961 1.08 2004 5.42 22/2002 15 10 4 2 8.7 46.5 1990
March 5.44 12.53 1997 0.29 1992 3.57 12/2007 17 12 3 1 5.6 40.1 2002
April 3.10 7.11 1991 0.27 1999 2.82 04/1991 14 8 2 0 0.3 7.0 1975
May 2.05 5.32 1984 0.35 1992 2.48 12/1987 11 6 1 0 0.0 0.0 1961
June 1.60 4.92 1968 0.19 1965 2.19 02/1968 10 5 1 0 0.0 0.0 1961
July 1.14 4.54 1983 0.00 2009 1.95 09/1997 7 3 0 0 0.0 0.0 1961
August 1.25 4.03 2004 0.01 1986 1.62 25/2004 7 4 1 0 0.0 0.0 1961
September 2.34 6.43 1972 0.02 2012 2.32 30/2005 9 5 1 0 0.0 0.0 1960
October 5.90 19.71 2003 0.23 1987 6.85 17/2003 15 10 4 1 0.1 2.6 1984
November 10.18 28.41 1995 1.24 1979 5.36 08/1995 20 15 7 3 4.8 45.5 1973
December 9.21 18.60 1975 1.26 1985 4.54 26/1980 19 14 6 3 15.5 72.0 1996
Annual 57.59 79.11 1990 38.66 1985 6.85 20031017 163 105 37 14 51.5 149.5 2008
Winter 24.59 39.47 1974 7.55 1985 5.42 20020222 52 38 17 7 40.8 133.9 2008
Spring 10.59 18.74 1997 4.47 1992 3.57 20070312 42 25 6 2 5.9 40.4 2002
Summer 3.98 8.81 1983 0.87 2003 2.19 19680602 24 11 2 0 0.0 0.0 1961
Fall 18.43 37.92 1995 6.22 1987 6.85 20031017 45 30 12 5 4.8 45.5 1973
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