Boise August 15 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of August 15.
August 15 All-Time Records
1911–2023
Highest temperature 105 °F 1920
Lowest temperature 42 °F 1938
Lowest daily high 68 °F 1968
Highest daily low 75 °F 1992
Most precipitation 0.2 inches 1976
Most snow none -
August 15 Average Weather
1991–2020 1
Average high 91.0 °F
Average low 60.8 °F
Chance precipitation 6.8%
Chance snow 0%
Boise August 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 99 62 0.00 0.0
2021 98 66 0.00 0.0
2020 98 58 0.00 0.0
2019 90 60 0.00 0.0
2018 98 63 0.00 0.0
2017 87 55 0.00 0.0
2016 99 65 0.00 0.0
2015 83 58 0.00 0.0
2014 87 62 0.00 0.0
2013 99 61 0.00 0.0
2012 97 64 0.00 0.0
2011 82 61 0.00 0.0
2010 92 63 0.00 0.0
2009 73 48 0.00 0.0
2008 93 68 0.00 0.0
2007 100 63 0.00 0.0
2006 92 65 0.00 0.0
2005 92 57 0.00 0.0
2004 93 67 0.00 0.0
2003 97 70 0.00 0.0
2002 95 58 0.00 0.0
2001 98 74 0.00 0.0
2000 91 60 0.00 0.0
1999 78 48 0.00 0.0
1998 96 67 0.00 0.0
1997 90 61 0.00 0.0
1996 98 66 0.00 0.0
1995 95 58 0.00 0.0
1994 95 58 0.00 0.0
1993 69 52 0.03 0.0
1992 93 75 0.00 0.0
1991 90 68 0.02 0.0
1990 95 69 0.00 0.0
1989 83 56 0.00 0.0
1988 83 52 0.00 0.0
1987 75 46 0.00 0.0
1986 97 59 0.00 0.0
1985 87 55 0.00 0.0
1984 93 62 0.00 0.0
1983 78 63 0.05 0.0
1982 89 54 0.00 0.0
1981 96 62 0.00 0.0
1980 82 59 0.00 0.0
1979 83 57 0.00 0.0
1978 89 52 0.13 0.0
1977 96 61 0.00 0.0
1976 70 51 0.24 0.0
1975 93 57 0.00 0.0
1974 87 52 0.00 0.0
1973 97 59 0.00 0.0
1972 84 65 0.05 0.0
1971 95 59 0.00 0.0
1970 92 52 0.00 0.0
1969 93 60 0.00 0.0
1968 68 51 0.01 0.0
1967 98 63 0.00 0.0
1966 93 55 0.00 0.0
1965 89 62 0.00 0.0
1964 91 54 0.00 0.0
1963 90 54 0.00 0.0
1962 96 60 0.00 0.0
1961 91 68 0.00 0.0
1960 72 48 0.00 0.0
1959 88 55 0.00 0.0
1958 97 59 0.00 0.0
1957 90 59 0.00 0.0
1956 90 60 0.00 0.0
1955 93 65 0.00 0.0
1954 78 53 0.00 0.0
1953 99 69 0.00 0.0
1952 87 58 0.00 0.0
1951 95 59 0.00 0.0
1950 92 61 0.00 0.0
1949 90 56 0.00 0.0
1948 94 59 0.00 0.0
1947 91 59 0.00 0.0
1946 88 52 0.00 0.0
1945 94 61 0.00 0.0
1944 85 51 0.00 0.0
1943 94 61 0.00 0.0
1942 92 56 0.00 0.0
1941 96 61 0.00 0.0
1940 85 48 0.00 0.0
1939 93 52 0.00 0.0
1938 80 42 0.00 0.0
1937 87 46 0.00 0.0
1936 95 59 0.00 0.0
1935 76 45 0.00 0.0
1934 97 54 0.00 n/a
1933 94 54 0.00 0.0
1932 92 52 0.00 n/a
1931 90 56 0.00 n/a
1930 89 56 0.00 n/a
1929 95 58 0.00 n/a
1928 86 43 0.00 n/a
1927 77 46 0.02 n/a
1926 90 44 0.00 0.0
1925 71 42 0.00 0.0
1924 93 48 0.00 0.0
1923 89 52 0.00 0.0
1922 82 51 0.00 0.0
1921 78 54 0.00 0.0
1920 105 65 0.00 0.0
1919 89 48 0.00 0.0
1918 76 61 0.00 0.0
1917 96 58 0.00 0.0
1916 95 54 0.00 0.0
1915 95 63 0.00 0.0
1914 100 58 0.00 0.0
1913 82 46 0.00 0.0
1912 86 55 0.00 0.0
1911 86 46 0.00 0.0
All-Time Highest Temperatures in Boise on August 15
Rank Temperature Year
1 105 °F 1920
2 100 °F 2007
2 100 °F 1914
4 99 °F 1953
4 99 °F 2013
4 99 °F 2016
4 99 °F 2022
8 98 °F 1967
8 98 °F 1996
8 98 °F 2001
8 98 °F 2018
8 98 °F 2020
8 98 °F 2021
All-Time Lowest Temperatures in Boise on August 15
Rank Temperature Year
1 42 °F 1925
1 42 °F 1938
3 43 °F 1928
4 44 °F 1926
5 45 °F 1935
6 46 °F 1927
6 46 °F 1987
6 46 °F 1937
6 46 °F 1911
6 46 °F 1913
Lowest High Temperatures in Boise on August 15
Rank Temperature Year
1 68 °F 1968
2 69 °F 1993
3 70 °F 1976
4 71 °F 1925
5 72 °F 1960
6 73 °F 2009
7 75 °F 1987
8 76 °F 1918
8 76 °F 1935
10 77 °F 1927
All-Time Most Precipitation in Boise on August 15
Rank Precipitation Year
1 0.2 inches 1976
2 0.1 inches 1978
3 0.1 inches 1983
3 0.1 inches 1972
5 0.0 inches 1993
6 0.0 inches 1927
6 0.0 inches 1991
8 0.0 inches 1968
Weather Station Details
Years Station Coordinates
1940–2023 location
1911–1939 Meridian 1 W location