LEWISTON WTP, IDAHO

Period of Record General Climate Summary - Temperature

Station:(105236) LEWISTON WATER PLANT
From Year=1894 To Year=1955
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 40.9 26.0 33.4 65 08/1945 -21 31/1950 44.4 1953 15.9 1937 0.0 5.5 22.0 1.4
February 47.3 29.0 38.1 70 24/1896 -13 01/1950 44.8 1934 20.7 1936 0.0 1.6 18.1 0.4
March 56.1 33.3 44.7 78 20/1934 7 05/1955 51.6 1934 38.9 1955 0.0 0.1 13.1 0.0
April 67.0 39.9 53.5 99 25/1946 22 01/1936 58.9 1934 48.5 1955 0.2 0.0 2.8 0.0
May 75.7 46.5 61.1 104 28/1934 26 01/1954 68.5 1897 56.1 1896 2.7 0.0 0.2 0.0
June 81.4 52.5 66.9 109 23/1936 35 01/1951 73.8 1940 62.8 1953 6.0 0.0 0.0 0.0
July 93.2 58.6 75.9 117 28/1939 41 07/1895 80.0 1938 69.3 1897 21.4 0.0 0.0 0.0
August 92.3 56.5 74.4 111 20/1897 41 20/1945 78.5 1897 70.3 1954 20.4 0.0 0.0 0.0
September 81.4 49.2 65.3 108 07/1944 29 21/1895 72.8 1938 58.5 1895 6.8 0.0 0.2 0.0
October 66.6 40.3 53.5 94 05/1943 16 31/1935 57.2 1944 48.1 1946 0.2 0.0 4.6 0.0
November 50.4 32.7 41.6 75 04/1950 -2 16/1955 48.9 1899 32.8 1936 0.0 0.6 14.2 0.1
December 43.1 29.6 36.6 65 01/1939 5 12/1898 42.4 1950 30.3 1898 0.0 2.9 19.8 0.0
Annual 66.3 41.2 53.8 117 19390728 -21 19500131 57.1 1934 51.9 1955 57.7 10.7 95.1 1.9
Winter 43.7 28.2 36.0 70 18960224 -21 19500131 41.3 1953 28.5 1937 0.0 9.9 60.0 1.8
Spring 66.3 39.9 53.1 104 19340528 7 19550305 58.7 1934 48.1 1955 3.0 0.2 16.1 0.0
Summer 89.0 55.8 72.4 117 19390728 35 19510601 76.3 1940 69.6 1954 47.8 0.0 0.0 0.0
Fall 66.2 40.7 53.5 108 19440907 -2 19551116 56.2 1944 49.9 1936 7.0 0.6 19.0 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