Lewiston, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° 39° -22° (1950) 66° (1953) 1.14" 3.9"
February 31° 46° -18° (1884) 72° (1986) 0.95" 2.4"
March 36° 54° 2° (1955) 80° (1923) 1.12" 0.7"
April 41° 62° 20° (1966) 99° (1946) 1.31" 0.1"
May 47° 70° 23° (1954) 104° (1934) 1.56" 0"
June 54° 78° 34° (1951) 109° (1936) 1.16" 0"
July 59° 88° 41° (1955) 117° (1939) 0.72" 0"
August 59° 88° 41° (1992) 115° (1961) 0.75" 0"
September 51° 77° 27° (1926) 108° (1944) 0.81" 0"
October 41° 62° 15° (2002) 94° (1943) 0.96" 0.1"
November 34° 47° -3° (1955) 77° (1999) 1.21" 1.8"
December 28° 39° -23° (1919) 67° (1921) 1.05" 3.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 31° 42° 3° (1985) 65° (1939) 0.04" NA
Dec 2 30° 41° -2° (1919) 61° (1975) 0.04" NA
Dec 3 30° 41° -4° (1919) 62° (1980) 0.04" NA
Dec 4 30° 41° -5° (1919) 63° (2007) 0.04" NA
Dec 5 30° 41° 1° (1919) 59° (1939) 0.04" NA
Dec 6 30° 40° 7° (1919) 60° (1939) 0.04" NA
Dec 7 30° 40° 2° (1972) 57° (1973) 0.04" NA
Dec 8 29° 40° -9° (1919) 60° (1989) 0.04" NA
Dec 9 29° 40° -11° (1919) 58° (1979) 0.04" NA
Dec 10 29° 40° -9° (1972) 62° (1968) 0.04" NA
Dec 11 29° 40° -4° (1932) 61° (1924) 0.03" NA
Dec 12 29° 39° -20° (1919) 67° (1921) 0.03" NA
Dec 13 29° 39° -23° (1919) 59° (2006) 0.03" NA
Dec 14 28° 39° -10° (1919) 65° (2002) 0.03" NA
Dec 15 28° 39° -7° (1919) 62° (2002) 0.03" NA
Dec 16 28° 39° -8° (1884) 61° (1982) 0.03" NA
Dec 17 28° 39° -11° (1964) 59° (1937) 0.03" NA
Dec 18 28° 39° -8° (1924) 66° (1917) 0.03" NA
Dec 19 28° 39° -7° (1924) 62° (1934) 0.03" NA
Dec 20 28° 39° 0° (1983) 57° (1934) 0.03" NA
Dec 21 28° 38° -8° (1983) 60° (1972) 0.03" NA
Dec 22 28° 38° -13° (1983) 62° (1917) 0.03" NA
Dec 23 28° 38° -16° (1983) 64° (1901) 0.03" NA
Dec 24 28° 38° -13° (1983) 60° (1922) 0.03" NA
Dec 25 28° 38° -6° (1924) 59° (1980) 0.03" NA
Dec 26 27° 38° 8° (1948) 62° (1980) 0.03" NA
Dec 27 27° 38° 5° (1948) 60° (1917) 0.03" NA
Dec 28 27° 38° 4° (1990) 63° (1965) 0.03" NA
Dec 29 27° 38° -10° (1968) 62° (1917) 0.03" NA
Dec 30 27° 38° -22° (1968) 60° (1920) 0.04" NA
Dec 31 27° 38° -16° (1884) 55° (1917) 0.04" NA
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