Boise April 18 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of April 18.
April 18 All-Time Records
1911–2024
Highest temperature 89 °F 1994
Lowest temperature 21 °F 1968
Lowest daily high 43 °F 1955
Highest daily low 53 °F 1943
Most precipitation 0.51 inches 2017
Most snow 0.9 inches 2023
April 18 Average Weather
1991–2020 1
Average high 63.0 °F
Average low 39.6 °F
Chance precipitation 29.7%
Chance snow 0.5%
Boise April 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 58 31 0.00 0.0
2023 47 30 0.16 0.9
2022 72 40 0.00 0.0
2021 75 40 0.00 0.0
2020 69 35 0.00 0.0
2019 73 42 0.00 0.0
2018 63 36 0.00 0.0
2017 61 44 0.51 0.0
2016 73 46 0.00 0.0
2015 73 42 0.00 0.0
2014 62 46 0.01 0.0
2013 57 25 0.00 0.0
2012 63 46 0.05 0.0
2011 55 37 0.13 0.0
2010 74 43 0.00 0.0
2009 65 40 0.00 0.0
2008 67 40 0.00 0.0
2007 47 38 0.01 0.0
2006 54 29 0.00 0.0
2005 55 33 0.02 0.0
2004 60 36 0.00 0.0
2003 56 35 0.00 0.0
2002 48 32 0.00 0.0
2001 71 41 0.00 0.0
2000 66 48 0.16 0.0
1999 77 47 0.00 0.0
1998 60 35 0.00 0.0
1997 70 52 0.07 0.0
1996 51 35 0.18 0.0
1995 57 40 0.00 0.0
1994 89 51 0.00 0.0
1993 53 39 0.04 0.0
1992 59 41 0.00 0.0
1991 58 39 0.00 0.0
1990 70 49 0.00 0.0
1989 83 51 0.00 0.0
1988 65 36 0.00 0.0
1987 52 37 0.03 0.0
1986 56 30 0.00 0.0
1985 63 36 0.17 0.0
1984 54 42 0.00 0.0
1983 68 47 0.00 0.0
1982 48 31 0.00 0.0
1981 73 43 0.02 0.0
1980 78 44 0.00 0.0
1979 50 33 0.08 0.0
1978 65 37 0.00 0.0
1977 57 23 0.00 0.0
1976 53 35 0.02 0.0
1975 59 35 0.00 0.0
1974 69 49 0.00 0.0
1973 49 31 0.00 0.0
1972 49 27 0.00 0.0
1971 59 40 0.01 0.0
1970 57 28 0.00 0.0
1969 57 38 0.04 0.0
1968 60 21 0.00 0.0
1967 52 41 0.00 0.0
1966 51 30 0.00 0.0
1965 51 32 0.12 0.0
1964 57 22 0.00 0.0
1963 50 33 0.00 0.0
1962 81 48 0.00 0.0
1961 59 40 0.07 0.0
1960 69 45 0.00 0.0
1959 53 30 0.00 0.0
1958 59 34 0.00 0.0
1957 61 43 0.00 0.0
1956 70 36 0.00 0.0
1955 43 32 0.30 0.0
1954 64 46 0.00 0.0
1953 63 33 0.00 0.0
1952 77 48 0.00 0.0
1951 71 38 0.00 0.0
1950 56 30 0.00 0.0
1949 80 48 0.00 0.0
1948 59 38 0.00 0.0
1947 61 42 0.00 0.0
1946 80 50 0.00 0.0
1945 70 41 0.00 0.0
1944 56 33 0.00 0.0
1943 84 53 0.00 0.0
1942 62 38 0.00 0.0
1941 53 33 0.00 0.0
1940 70 44 0.00 0.0
1939 79 34 0.00 0.0
1938 68 50 0.03 0.0
1937 68 38 0.00 0.0
1936 79 49 0.00 0.0
1935 66 35 0.00 n/a
1934 80 37 0.00 0.0
1933 62 29 0.00 0.0
1932 61 34 n/a n/a
1931 61 26 0.00 n/a
1930 69 41 0.05 n/a
1929 70 36 0.00 0.0
1928 52 33 0.00 0.0
1927 55 32 0.00 0.0
1926 69 50 0.10 0.0
1925 54 38 0.08 0.0
1924 65 29 0.00 0.0
1923 64 38 0.00 0.0
1922 56 28 0.00 0.0
1921 66 39 0.00 0.0
1920 63 34 0.00 0.0
1919 64 47 0.15 0.0
1918 61 27 0.00 0.0
1917 54 28 0.00 0.0
1916 54 37 0.00 0.0
1915 79 37 0.00 0.0
1914 65 31 0.00 0.0
1913 69 41 0.02 0.0
1912 55 32 0.00 0.0
1911 66 34 0.09 0.0
What's the all-time high for Boise on 4/18?
For the date of Apr 18, the highest temperature ever reached in Boise history is 89 °F which happened in 1994.
Highest Temperatures in Boise on April 18
Rank Temperature Year
1 89 °F 1994
2 84 °F 1943
3 83 °F 1989
4 81 °F 1962
5 80 °F 1946
5 80 °F 1934
5 80 °F 1949
8 79 °F 1936
8 79 °F 1939
8 79 °F 1915
What's the all-time low for Boise on 4/18?
For the date of Apr 18, the lowest temperature ever reached in Boise history is 21 °F which happened in 1968.
Lowest Temperatures in Boise on April 18
Rank Temperature Year
1 21 °F 1968
2 22 °F 1964
3 23 °F 1977
4 25 °F 2013
5 26 °F 1931
6 27 °F 1972
6 27 °F 1918
8 28 °F 1922
8 28 °F 1970
8 28 °F 1917
Lowest High Temperatures in Boise on April 18
Rank Temperature Year
1 43 °F 1955
2 47 °F 2007
2 47 °F 2023
4 48 °F 2002
4 48 °F 1982
6 49 °F 1972
6 49 °F 1973
8 50 °F 1979
8 50 °F 1963
10 51 °F 1966
10 51 °F 1996
10 51 °F 1965
What's the most it has ever rained in Boise on 4/18?
For the date of Apr 18, the most precipitation ever recorded in Boise history is 0.51 inches which happened in 2017.
All-Time Most Precipitation in Boise on April 18
Rank Precipitation Year
1 0.51 inches 2017
2 0.30 inches 1955
3 0.18 inches 1996
4 0.17 inches 1985
5 0.16 inches 2000
5 0.16 inches 2023
7 0.15 inches 1919
8 0.13 inches 2011
9 0.12 inches 1965
10 0.10 inches 1926
All-Time Most Snow in Boise on April 18
Rank Precipitation Year
1 0.9 inches 2023
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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