LEWISTON WSO AP, IDAHO

Period of Record General Climate Summary - Precipitation

Station:(105241) LEWISTON WSO AP
From Year=1948 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 1.23 3.55 1970 0.11 2007 1.15 15/1956 11 4 0 0 5.5 26.1 1957
February 0.87 2.22 2000 0.17 1988 0.92 15/2011 9 3 0 0 2.4 14.9 1956
March 1.13 3.59 2012 0.25 1969 0.88 07/2003 11 4 0 0 1.2 9.7 1955
April 1.23 3.29 1978 0.05 1956 0.89 01/1978 10 4 0 0 0.0 1.1 1972
May 1.52 3.78 1998 0.27 1964 1.32 18/1991 10 5 0 0 0.0 0.0 1949
June 1.36 4.70 1950 0.23 2003 1.64 15/1956 9 4 0 0 0.0 1.0 1964
July 0.58 2.60 1987 0.00 1953 1.80 10/1998 5 2 0 0 0.0 0.0 1949
August 0.69 2.96 1989 0.00 1955 1.36 01/1960 4 2 0 0 0.0 0.0 1948
September 0.71 2.48 2000 0.00 1975 1.73 14/1955 5 2 0 0 0.0 0.0 1948
October 1.00 2.79 1950 0.00 1978 1.09 10/1955 8 3 0 0 0.1 2.5 1971
November 1.18 2.79 1973 0.23 1976 1.22 18/1996 11 4 0 0 1.8 14.4 1961
December 1.13 3.28 1964 0.14 1965 0.87 07/1975 11 4 0 0 4.1 18.7 1968
Annual 12.62 18.72 1950 7.73 2007 1.80 19980710 103 41 4 0 15.2 40.6 1955
Winter 3.23 6.67 1965 0.96 1977 1.15 19560115 32 11 1 0 12.0 45.3 1969
Spring 3.88 6.88 2011 1.70 1966 1.32 19910518 31 13 1 0 1.3 9.7 1955
Summer 2.63 5.92 1964 0.27 1973 1.80 19980710 17 8 1 0 0.0 1.0 1964
Fall 2.88 5.72 1955 0.32 1987 1.73 19550914 23 10 1 0 1.9 14.4 1961
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