Lewiston August 20 Weather Records

Daily averages and all-time records for weather in Lewiston, Idaho for the date of August 20.
August 20 All-Time Records
1894–2024
Highest temperature 111 °F 1897
Lowest temperature 41 °F 1945
Lowest daily high 63 °F 1959
Highest daily low 72 °F 1982
Most precipitation 0.96 inches 1959
Most snow none -
August 20 Average Weather
1991–2020 1
Average high 88.6 °F
Average low 59.1 °F
Chance precipitation 11.4%
Chance snow 0%
Lewiston August 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 82 66 0.00 0.0
2022 98 71 0.00 0.0
2021 85 62 0.18 0.0
2020 91 65 0.05 0.0
2019 101 62 0.00 0.0
2018 84 62 0.00 0.0
2017 86 55 0.00 0.0
2016 96 58 0.00 0.0
2015 94 61 0.00 0.0
2014 87 64 0.00 0.0
2013 89 61 0.00 0.0
2012 99 70 0.00 0.0
2011 93 57 0.00 0.0
2010 88 55 0.00 0.0
2009 102 68 0.00 0.0
2008 72 62 0.35 0.0
2007 64 56 0.08 0.0
2006 100 59 0.00 0.0
2005 99 57 0.00 n/a
2004 96 64 0.00 n/a
2003 90 60 0.00 n/a
2002 79 57 0.05 n/a
2001 86 53 0.00 n/a
2000 77 52 0.00 n/a
1999 98 61 0.00 n/a
1998 96 60 0.00 n/a
1997 97 66 0.00 n/a
1996 76 54 0.00 n/a
1995 92 55 0.00 0.0
1994 85 57 0.00 0.0
1993 85 66 0.00 0.0
1992 90 64 0.00 0.0
1991 97 66 0.00 0.0
1990 76 55 0.00 0.0
1989 83 64 0.00 0.0
1988 77 58 0.00 0.0
1987 83 58 0.00 0.0
1986 94 58 0.00 0.0
1985 72 53 0.06 0.0
1984 87 51 0.00 0.0
1983 81 62 0.00 0.0
1982 103 72 0.00 0.0
1981 84 60 0.00 0.0
1980 83 52 0.00 0.0
1979 90 59 0.00 0.0
1978 66 58 0.12 0.0
1977 104 68 0.00 0.0
1976 81 57 0.06 0.0
1975 82 57 0.00 0.0
1974 79 56 0.00 0.0
1973 94 60 0.00 0.0
1972 92 59 0.01 0.0
1971 90 68 0.00 0.0
1970 93 59 0.00 0.0
1969 92 57 0.00 0.0
1968 72 55 0.05 0.0
1967 102 65 0.00 0.0
1966 82 49 0.00 0.0
1965 81 57 0.00 0.0
1964 78 48 0.00 0.0
1963 78 59 0.00 0.0
1962 93 58 0.00 0.0
1961 94 71 0.00 0.0
1960 83 54 0.00 0.0
1959 63 52 0.96 0.0
1958 97 55 0.00 0.0
1957 87 54 0.00 0.0
1956 95 56 0.00 0.0
1955 83 59 0.00 0.0
1954 69 56 0.10 0.0
1953 83 68 0.00 0.0
1952 84 46 0.00 0.0
1951 96 56 0.00 0.0
1950 98 60 0.00 0.0
1949 90 60 0.00 0.0
1948 75 46 0.00 0.0
1947 78 53 0.00 0.0
1946 108 65 0.00 0.0
1945 91 41 0.00 0.0
1944 87 48 0.00 0.0
1943 87 52 0.00 0.0
1942 108 65 0.00 0.0
1941 99 63 0.00 0.0
1940 108 62 0.00 0.0
1939 98 55 0.00 n/a
1938 89 55 0.00 n/a
1937 91 65 0.00 n/a
1936 89 55 0.00 n/a
1935 84 50 0.00 n/a
1934 94 57 0.00 n/a
1933 n/a n/a n/a n/a
1932 n/a n/a n/a n/a
1931 n/a n/a n/a n/a
1930 n/a n/a n/a n/a
1929 n/a n/a n/a n/a
1928 n/a n/a n/a n/a
1927 n/a n/a n/a n/a
1926 n/a n/a n/a n/a
1925 n/a n/a n/a n/a
1924 n/a n/a n/a n/a
1923 n/a n/a n/a n/a
1922 n/a n/a n/a n/a
1921 n/a n/a n/a n/a
1920 n/a n/a n/a n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 n/a n/a n/a n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 n/a n/a n/a n/a
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 n/a n/a n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a n/a n/a
1906 n/a n/a n/a n/a
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 98 60 0.00 n/a
1898 92 62 0.00 n/a
1897 111 59 0.00 n/a
1896 96 57 0.00 n/a
1895 84 50 0.00 n/a
1894 103 59 n/a n/a
What's the all-time high for Lewiston on 8/20?
For the date of Aug 20, the highest temperature ever reached in Lewiston history is 111 °F which happened in 1897.
Highest Temperatures in Lewiston on August 20
Rank Temperature Year
1 111 °F 1897
2 108 °F 1942
2 108 °F 1946
2 108 °F 1940
5 104 °F 1977
6 103 °F 1982
6 103 °F 1894
8 102 °F 1967
8 102 °F 2009
10 101 °F 2019
What's the all-time low for Lewiston on 8/20?
For the date of Aug 20, the lowest temperature ever reached in Lewiston history is 41 °F which happened in 1945.
Lowest Temperatures in Lewiston on August 20
Rank Temperature Year
1 41 °F 1945
2 46 °F 1952
2 46 °F 1948
4 48 °F 1944
4 48 °F 1964
6 49 °F 1966
7 50 °F 1895
7 50 °F 1935
9 51 °F 1984
10 52 °F 1959
10 52 °F 1980
10 52 °F 2000
10 52 °F 1943
Lowest High Temperatures in Lewiston on August 20
Rank Temperature Year
1 63 °F 1959
2 64 °F 2007
3 66 °F 1978
4 69 °F 1954
5 72 °F 2008
5 72 °F 1968
5 72 °F 1985
8 75 °F 1948
9 76 °F 1990
9 76 °F 1996
What's the most it has ever rained in Lewiston on 8/20?
For the date of Aug 20, the most precipitation ever recorded in Lewiston history is 0.96 inches which happened in 1959.
All-Time Most Precipitation in Lewiston on August 20
Rank Precipitation Year
1 0.96 inches 1959
2 0.35 inches 2008
3 0.18 inches 2021
4 0.12 inches 1978
5 0.10 inches 1954
6 0.08 inches 2007
7 0.06 inches 1976
7 0.06 inches 1985
9 0.05 inches 1968
9 0.05 inches 2002
9 0.05 inches 2020
Weather Station Details
Years Station Coordinates
1948–2024 Lewiston Nez Perce County Airport location
1894–1947 Lewiston WTP location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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