Boise April 20 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of April 20.
April 20 All-Time Records
1911–2024
Highest temperature 89 °F 1994
Lowest temperature 18 °F 1927
Lowest daily high 41 °F 1944
Highest daily low 53 °F 2012
Most precipitation 0.80 inches 2010
Most snow 0.2 inches 1963
April 20 Average Weather
1991–2020 1
Average high 63.7 °F
Average low 39.9 °F
Chance precipitation 29.4%
Chance snow 0.3%
Boise April 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 72 38 0.00 0.0
2023 52 28 0.00 0.0
2022 65 39 0.00 0.0
2021 61 34 0.00 0.0
2020 71 42 0.00 0.0
2019 68 49 0.22 0.0
2018 69 40 0.00 0.0
2017 56 41 0.12 0.0
2016 82 48 0.00 0.0
2015 73 40 0.00 0.0
2014 64 42 0.00 0.0
2013 61 42 0.01 0.0
2012 76 53 0.00 0.0
2011 54 37 0.05 0.0
2010 83 49 0.80 0.0
2009 83 46 0.00 0.0
2008 44 28 0.00 0.0
2007 59 38 0.00 0.0
2006 72 42 0.00 0.0
2005 52 41 0.08 0.0
2004 58 38 0.09 0.0
2003 73 44 0.00 0.0
2002 61 32 0.00 0.0
2001 54 42 0.00 0.0
2000 71 48 0.13 0.0
1999 62 44 0.00 0.0
1998 69 38 0.00 0.0
1997 58 43 0.11 0.0
1996 51 32 0.00 0.0
1995 45 35 0.09 0.0
1994 89 48 0.00 0.0
1993 65 32 0.00 0.0
1992 75 42 0.00 0.0
1991 65 45 0.00 0.0
1990 73 48 0.04 0.0
1989 82 47 0.00 0.0
1988 60 47 0.79 0.0
1987 64 24 0.00 0.0
1986 75 39 0.00 0.0
1985 42 20 0.00 0.0
1984 54 38 0.00 0.0
1983 67 47 0.20 0.0
1982 54 23 0.00 0.0
1981 57 48 0.78 0.0
1980 81 47 0.00 0.0
1979 63 37 0.00 0.0
1978 57 37 0.10 0.0
1977 68 31 0.00 0.0
1976 61 42 0.07 0.0
1975 57 30 0.00 0.0
1974 59 37 0.00 0.0
1973 58 34 0.00 0.0
1972 61 33 0.00 0.0
1971 64 38 0.04 0.0
1970 48 29 0.00 0.0
1969 62 34 0.00 0.0
1968 50 22 0.00 0.0
1967 51 31 0.00 0.0
1966 50 24 0.01 0.0
1965 68 53 0.00 0.0
1964 64 28 0.00 0.0
1963 45 30 0.03 0.2
1962 58 41 0.36 0.0
1961 57 26 0.00 0.0
1960 71 42 0.00 0.0
1959 63 30 0.00 0.0
1958 68 43 0.00 0.0
1957 54 38 0.22 0.0
1956 78 46 0.00 0.0
1955 53 39 0.02 0.0
1954 57 35 0.01 0.0
1953 75 39 0.00 0.0
1952 62 33 0.00 0.0
1951 58 28 0.00 0.0
1950 73 42 0.00 0.0
1949 63 38 0.00 0.0
1948 75 41 0.00 0.0
1947 57 39 0.00 0.0
1946 59 36 0.00 0.0
1945 83 49 0.00 0.0
1944 41 33 0.22 0.0
1943 61 36 0.00 0.0
1942 81 46 0.00 0.0
1941 63 34 0.00 0.0
1940 60 43 0.03 0.0
1939 75 33 0.00 0.0
1938 67 32 0.00 0.0
1937 65 38 0.00 0.0
1936 76 41 0.00 0.0
1935 73 46 0.00 n/a
1934 83 42 0.00 0.0
1933 67 36 0.00 0.0
1932 55 31 n/a n/a
1931 68 20 0.00 n/a
1930 80 42 0.00 n/a
1929 62 42 0.03 0.0
1928 52 33 0.10 0.0
1927 52 18 0.00 0.0
1926 68 42 0.00 0.0
1925 49 34 0.01 0.0
1924 66 28 0.00 0.0
1923 47 29 0.15 0.0
1922 62 46 0.02 0.0
1921 58 40 0.17 0.0
1920 52 33 0.04 0.1
1919 65 37 0.00 0.0
1918 67 33 0.00 0.0
1917 67 40 0.00 0.0
1916 65 33 0.00 0.0
1915 77 48 0.01 0.0
1914 68 40 0.00 0.0
1913 74 31 0.00 0.0
1912 52 34 0.02 0.0
1911 52 36 0.06 0.0
What's the all-time high for Boise on 4/20?
For the date of Apr 20, the highest temperature ever reached in Boise history is 89 °F which happened in 1994.
Highest Temperatures in Boise on April 20
Rank Temperature Year
1 89 °F 1994
2 83 °F 1934
2 83 °F 2009
2 83 °F 1945
2 83 °F 2010
6 82 °F 2016
6 82 °F 1989
8 81 °F 1980
8 81 °F 1942
10 80 °F 1930
What's the all-time low for Boise on 4/20?
For the date of Apr 20, the lowest temperature ever reached in Boise history is 18 °F which happened in 1927.
Lowest Temperatures in Boise on April 20
Rank Temperature Year
1 18 °F 1927
2 20 °F 1931
2 20 °F 1985
4 22 °F 1968
5 23 °F 1982
6 24 °F 1966
6 24 °F 1987
8 26 °F 1961
9 28 °F 1924
9 28 °F 2008
9 28 °F 1964
9 28 °F 1951
9 28 °F 2023
Lowest High Temperatures in Boise on April 20
Rank Temperature Year
1 41 °F 1944
2 42 °F 1985
3 44 °F 2008
4 45 °F 1963
4 45 °F 1995
6 47 °F 1923
7 48 °F 1970
8 49 °F 1925
9 50 °F 1968
9 50 °F 1966
What's the most it has ever rained in Boise on 4/20?
For the date of Apr 20, the most precipitation ever recorded in Boise history is 0.80 inches which happened in 2010.
All-Time Most Precipitation in Boise on April 20
Rank Precipitation Year
1 0.80 inches 2010
2 0.79 inches 1988
3 0.78 inches 1981
4 0.36 inches 1962
5 0.22 inches 1944
5 0.22 inches 1957
5 0.22 inches 2019
8 0.20 inches 1983
9 0.17 inches 1921
10 0.15 inches 1923
All-Time Most Snow in Boise on April 20
Rank Precipitation Year
1 0.2 inches 1963
2 0.1 inches 1920
Weather Station Details
Years Station Coordinates
1940–2024 location
1911–1939 Meridian 1 W location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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