Lewiston May 20 Weather Records

Daily averages and all-time records for weather in Lewiston, Idaho for the date of May 20.
May 20 All-Time Records
1894–2024
Highest temperature 95 °F 2023
Lowest temperature 39 °F 1975
Lowest daily high 54 °F 1962
Highest daily low 63 °F 2023
Most precipitation 0.96 inches 2020
Most snow none -
May 20 Average Weather
1991–2020 1
Average high 72.9 °F
Average low 49.0 °F
Chance precipitation 34.7%
Chance snow 0%
Lewiston May 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 95 63 0.00 0.0
2022 64 44 0.00 0.0
2021 58 46 0.00 0.0
2020 56 50 0.96 0.0
2019 71 47 0.00 0.0
2018 77 54 0.00 0.0
2017 73 51 0.00 0.0
2016 64 46 0.11 0.0
2015 81 53 0.00 0.0
2014 79 44 0.00 0.0
2013 78 46 0.00 0.0
2012 78 53 0.00 0.0
2011 75 53 0.00 0.0
2010 57 44 0.26 0.0
2009 65 44 0.00 0.0
2008 69 51 0.21 0.0
2007 58 50 0.02 0.0
2006 74 59 0.59 0.0
2005 59 49 0.10 n/a
2004 72 52 0.39 n/a
2003 70 40 0.00 n/a
2002 61 49 0.03 n/a
2001 67 44 0.00 n/a
2000 78 49 0.00 n/a
1999 67 47 0.00 n/a
1998 74 47 0.00 n/a
1997 72 49 0.00 n/a
1996 64 42 0.00 n/a
1995 78 46 0.00 0.0
1994 60 50 0.17 0.0
1993 74 57 0.19 0.0
1992 67 46 0.11 0.0
1991 72 45 0.00 0.0
1990 63 50 0.16 0.0
1989 74 40 0.00 0.0
1988 79 44 0.00 0.0
1987 62 40 0.00 0.0
1986 63 48 0.44 0.0
1985 75 56 0.00 0.0
1984 63 48 0.00 0.0
1983 79 48 0.00 0.0
1982 75 43 0.00 0.0
1981 67 55 0.02 0.0
1980 85 51 0.00 0.0
1979 81 43 0.00 0.0
1978 80 50 0.00 0.0
1977 73 45 0.00 0.0
1976 69 47 0.00 0.0
1975 67 39 0.01 0.0
1974 66 50 0.00 0.0
1973 64 46 0.00 0.0
1972 78 52 0.19 0.0
1971 59 40 0.00 0.0
1970 72 52 0.00 0.0
1969 65 50 0.24 0.0
1968 70 53 0.36 0.0
1967 83 50 0.00 0.0
1966 84 50 0.00 0.0
1965 65 43 0.00 0.0
1964 77 54 0.00 0.0
1963 86 48 0.00 0.0
1962 54 44 0.02 0.0
1961 83 47 0.00 0.0
1960 58 39 0.62 0.0
1959 66 47 0.00 0.0
1958 90 53 0.02 0.0
1957 55 47 0.17 0.0
1956 82 57 0.00 0.0
1955 77 50 0.10 0.0
1954 78 49 0.00 0.0
1953 60 41 0.11 0.0
1952 69 48 0.11 0.0
1951 78 43 0.00 0.0
1950 74 42 0.00 0.0
1949 61 53 0.17 0.0
1948 75 51 0.00 0.0
1947 88 45 0.00 0.0
1946 85 40 0.00 0.0
1945 71 44 0.04 0.0
1944 72 41 0.00 0.0
1943 63 50 0.00 0.0
1942 72 49 0.00 0.0
1941 68 44 0.00 0.0
1940 82 50 0.00 0.0
1939 70 42 0.00 n/a
1938 69 45 0.00 n/a
1937 73 46 0.00 n/a
1936 70 46 0.00 n/a
1935 80 40 0.00 n/a
1934 71 51 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 74 45 n/a 0.0
1899 64 54 0.00 n/a
1898 69 42 0.60 n/a
1897 85 61 0.05 n/a
1896 74 46 0.00 n/a
1895 72 53 0.00 n/a
1894 73 53 0.00 n/a
What's the all-time high for Lewiston on 5/20?
For the date of May 20, the highest temperature ever reached in Lewiston history is 95 °F which happened in 2023.
Highest Temperatures in Lewiston on May 20
Rank Temperature Year
1 95 °F 2023
2 90 °F 1958
3 88 °F 1947
4 86 °F 1963
5 85 °F 1897
5 85 °F 1946
5 85 °F 1980
8 84 °F 1966
9 83 °F 1967
9 83 °F 1961
What's the all-time low for Lewiston on 5/20?
For the date of May 20, the lowest temperature ever reached in Lewiston history is 39 °F which has happened 2 times, most recently in 1975.
Lowest Temperatures in Lewiston on May 20
Rank Temperature Year
1 39 °F 1975
1 39 °F 1960
3 40 °F 1971
3 40 °F 1987
3 40 °F 1946
3 40 °F 1989
3 40 °F 2003
3 40 °F 1935
9 41 °F 1944
9 41 °F 1953
Lowest High Temperatures in Lewiston on May 20
Rank Temperature Year
1 54 °F 1962
2 55 °F 1957
3 56 °F 2020
4 57 °F 2010
5 58 °F 2021
5 58 °F 2007
5 58 °F 1960
8 59 °F 1971
8 59 °F 2005
10 60 °F 1994
10 60 °F 1953
What's the most it has ever rained in Lewiston on 5/20?
For the date of May 20, the most precipitation ever recorded in Lewiston history is 0.96 inches which happened in 2020.
All-Time Most Precipitation in Lewiston on May 20
Rank Precipitation Year
1 0.96 inches 2020
2 0.62 inches 1960
3 0.60 inches 1898
4 0.59 inches 2006
5 0.44 inches 1986
6 0.39 inches 2004
7 0.36 inches 1968
8 0.26 inches 2010
9 0.24 inches 1969
10 0.21 inches 2008
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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