LEWISTON WSO AP, IDAHO

Period of Record General Climate Summary - Temperature

Station:(105241) LEWISTON WSO AP
From Year=1948 To Year=2012
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 39.8 27.2 33.5 66 09/1953 -22 31/1950 44.1 1953 14.3 1949 0.0 6.6 20.4 1.0
February 46.3 30.7 38.5 72 24/1986 -15 02/1950 47.7 1991 26.6 1989 0.0 1.7 15.8 0.2
March 53.8 34.5 44.2 78 29/2004 2 05/1955 49.1 2004 35.3 1955 0.0 0.1 11.1 0.0
April 62.0 39.6 50.8 97 24/1977 20 19/1966 57.0 1990 45.0 1955 0.1 0.0 3.3 0.0
May 70.7 46.5 58.6 100 29/1983 23 01/1954 64.6 1958 53.3 1955 1.2 0.0 0.2 0.0
June 78.7 53.2 65.9 107 22/1973 34 01/1951 72.3 1977 59.9 1953 4.4 0.0 0.0 0.0
July 89.3 59.1 74.2 110 12/1967 41 02/1955 80.3 2007 65.4 1993 16.6 0.0 0.0 0.0
August 88.2 58.4 73.3 115 04/1961 41 24/1992 79.1 1967 66.7 1954 14.9 0.0 0.0 0.0
September 78.2 50.5 64.3 103 02/1950 28 17/1965 72.9 1990 56.8 1985 3.8 0.0 0.1 0.0
October 62.9 40.9 51.9 89 02/1975 15 31/2002 58.7 1988 46.8 1949 0.0 0.0 3.0 0.0
November 48.0 33.5 40.8 74 03/1975 -3 14/1955 47.1 1989 28.9 1985 0.0 1.1 12.1 0.1
December 40.5 28.5 34.5 65 14/2002 -22 30/1968 41.0 1950 23.2 1985 0.0 5.0 20.6 0.4
Annual 63.2 41.9 52.5 115 19610804 -22 19500131 55.8 1990 48.9 1955 40.9 14.6 86.5 1.7
Winter 42.2 28.8 35.5 72 19860224 -22 19500131 40.5 1958 25.5 1949 0.0 13.4 56.8 1.6
Spring 62.2 40.2 51.2 100 19830529 2 19550305 55.3 1992 44.5 1955 1.2 0.1 14.5 0.0
Summer 85.4 56.9 71.1 115 19610804 34 19510601 75.5 1961 66.4 1954 35.9 0.0 0.0 0.0
Fall 63.0 41.7 52.3 103 19500902 -3 19551114 57.7 1990 44.8 1985 3.8 1.1 15.2 0.1
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