date! ,

Period of Record General Climate Summary - Precipitation

Station:(479236) WILLOW RESERVOIR
From Year=1934 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 1.01 2.93 1997 0.14 1961 1.29 05/1997 8 4 0 0 11.6 41.0 1950
February 0.85 2.76 1971 0.02 1987 1.20 21/1937 6 3 0 0 9.0 30.0 1937
March 1.51 3.56 1977 0.18 1937 1.35 11/1973 8 4 1 0 8.8 23.5 1942
April 2.28 5.04 2002 0.48 1946 2.34 03/1934 9 6 1 0 3.2 14.0 1993
May 3.40 8.18 1960 0.56 1986 3.22 06/1960 11 7 2 1 0.4 8.7 1960
June 4.10 11.38 2010 0.92 2006 6.12 14/1981 12 8 3 1 0.0 0.0 1934
July 3.91 8.32 1935 1.02 1998 3.76 01/1958 10 7 3 1 0.0 0.0 1934
August 4.00 10.59 1995 0.38 1970 3.40 31/1973 10 7 3 1 0.0 0.0 1934
September 3.73 10.67 1994 0.41 1952 4.27 08/1985 11 7 2 1 0.0 2.0 1995
October 2.53 6.78 2005 0.12 1953 5.13 05/2005 10 6 2 1 0.7 13.0 1938
November 1.84 6.25 1991 0.15 1981 2.32 13/1964 9 5 1 0 6.5 17.5 1957
December 1.18 3.02 1968 0.00 1943 1.26 16/1940 9 4 0 0 10.6 26.0 1996
Annual 30.33 42.55 1968 14.58 1976 6.12 19810614 113 67 18 6 50.9 95.2 1950
Winter 3.03 6.15 1971 0.94 1987 1.29 19970105 23 10 1 0 31.2 59.1 1962
Spring 7.19 12.66 1973 3.48 1980 3.22 19600506 28 17 4 1 12.4 29.9 1942
Summer 12.01 23.61 2010 4.81 1976 6.12 19810614 32 22 8 3 0.0 0.0 1934
Fall 8.10 18.48 1985 1.26 1976 5.13 20051005 29 18 5 2 7.3 17.5 1957
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