Boise August 31 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of August 31.
August 31 All-Time Records
1911–2024
Highest temperature 106 °F 2022
Lowest temperature 35 °F 1927
Lowest daily high 55 °F 1964
Highest daily low 69 °F 2022
Most precipitation 0.46 inches 1964
Most snow none -
August 31 Average Weather
1991–2020 1
Average high 86.1 °F
Average low 56.7 °F
Chance precipitation 8.9%
Chance snow 0%
Boise August 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 90 56 0.00 0.0
2022 106 69 0.00 0.0
2021 81 54 0.00 0.0
2020 76 54 0.00 0.0
2019 96 65 0.00 0.0
2018 80 58 0.00 0.0
2017 89 65 0.00 0.0
2016 92 62 0.00 0.0
2015 83 52 0.00 0.0
2014 74 48 0.00 0.0
2013 95 59 0.00 0.0
2012 88 63 0.00 0.0
2011 80 58 0.00 0.0
2010 72 50 0.00 0.0
2009 88 62 0.00 0.0
2008 69 52 0.00 0.0
2007 94 68 0.04 0.0
2006 74 43 0.00 0.0
2005 80 50 0.00 0.0
2004 102 68 0.00 0.0
2003 89 60 0.00 0.0
2002 87 61 0.00 0.0
2001 91 64 0.00 0.0
2000 80 57 0.09 0.0
1999 66 43 0.00 0.0
1998 92 58 0.00 0.0
1997 86 63 0.00 0.0
1996 82 56 0.00 0.0
1995 96 54 0.00 0.0
1994 87 52 0.00 0.0
1993 85 47 0.00 0.0
1992 86 61 0.00 0.0
1991 96 63 0.00 0.0
1990 84 48 0.00 0.0
1989 80 44 0.00 0.0
1988 87 48 0.00 0.0
1987 94 57 0.00 0.0
1986 78 47 0.00 0.0
1985 78 48 0.00 0.0
1984 61 55 0.00 0.0
1983 93 61 0.10 0.0
1982 81 46 0.00 0.0
1981 79 43 0.00 0.0
1980 73 43 0.00 0.0
1979 77 56 0.02 0.0
1978 83 58 0.00 0.0
1977 73 42 0.00 0.0
1976 92 55 0.00 0.0
1975 73 48 0.00 0.0
1974 91 56 0.00 0.0
1973 69 53 0.02 0.0
1972 83 50 0.00 0.0
1971 75 60 0.00 0.0
1970 97 69 0.09 0.0
1969 86 49 0.00 0.0
1968 87 59 0.00 0.0
1967 99 67 0.00 0.0
1966 76 43 0.00 0.0
1965 80 43 0.00 0.0
1964 55 49 0.46 0.0
1963 73 60 0.05 0.0
1962 83 48 0.00 0.0
1961 79 62 0.01 0.0
1960 88 62 0.00 0.0
1959 77 50 0.00 0.0
1958 89 53 0.00 0.0
1957 76 47 0.00 0.0
1956 77 47 0.00 0.0
1955 94 56 0.00 0.0
1954 79 54 0.00 0.0
1953 80 53 0.00 0.0
1952 80 48 0.00 0.0
1951 75 45 0.00 0.0
1950 94 58 0.00 0.0
1949 92 59 0.00 0.0
1948 84 48 0.00 0.0
1947 84 51 0.00 0.0
1946 77 51 0.00 0.0
1945 96 54 0.00 0.0
1944 89 58 0.00 0.0
1943 79 42 0.00 0.0
1942 79 50 0.00 0.0
1941 77 50 0.00 0.0
1940 92 65 0.00 0.0
1939 86 46 0.00 0.0
1938 89 61 0.00 0.0
1937 81 42 0.00 0.0
1936 90 58 0.00 0.0
1935 86 56 0.00 0.0
1934 93 51 0.00 n/a
1933 73 42 0.00 0.0
1932 76 39 0.00 n/a
1931 90 43 0.00 n/a
1930 90 48 0.00 n/a
1929 98 67 0.00 n/a
1928 90 41 0.00 n/a
1927 80 35 0.00 n/a
1926 72 42 0.00 0.0
1925 92 54 0.00 0.0
1924 81 51 0.00 0.0
1923 94 56 0.00 0.0
1922 80 50 0.00 0.0
1921 90 54 0.00 0.0
1920 77 40 0.00 0.0
1919 89 62 0.00 0.0
1918 94 43 0.00 0.0
1917 88 44 0.00 0.0
1916 94 58 0.00 0.0
1915 96 52 0.08 0.0
1914 84 44 0.00 0.0
1913 90 56 0.00 0.0
1912 69 49 0.00 0.0
1911 95 51 0.00 0.0
What's the all-time high for Boise on 8/31?
For the date of Aug 31, the highest temperature ever reached in Boise history is 106 °F which happened in 2022.
Highest Temperatures in Boise on August 31
Rank Temperature Year
1 106 °F 2022
2 102 °F 2004
3 99 °F 1967
4 98 °F 1929
5 97 °F 1970
6 96 °F 1945
6 96 °F 1991
6 96 °F 1995
6 96 °F 1915
6 96 °F 2019
What's the all-time low for Boise on 8/31?
For the date of Aug 31, the lowest temperature ever reached in Boise history is 35 °F which happened in 1927.
Lowest Temperatures in Boise on August 31
Rank Temperature Year
1 35 °F 1927
2 39 °F 1932
3 40 °F 1920
4 41 °F 1928
5 42 °F 1937
5 42 °F 1943
5 42 °F 1933
5 42 °F 1977
5 42 °F 1926
10 43 °F 1966
10 43 °F 2006
10 43 °F 1980
10 43 °F 1931
10 43 °F 1999
10 43 °F 1981
10 43 °F 1918
10 43 °F 1965
Lowest High Temperatures in Boise on August 31
Rank Temperature Year
1 55 °F 1964
2 61 °F 1984
3 66 °F 1999
4 69 °F 1912
4 69 °F 2008
4 69 °F 1973
7 72 °F 2010
7 72 °F 1926
9 73 °F 1963
9 73 °F 1933
9 73 °F 1977
9 73 °F 1980
9 73 °F 1975
What's the most it has ever rained in Boise on 8/31?
For the date of Aug 31, the most precipitation ever recorded in Boise history is 0.46 inches which happened in 1964.
All-Time Most Precipitation in Boise on August 31
Rank Precipitation Year
1 0.46 inches 1964
2 0.10 inches 1983
3 0.09 inches 1970
3 0.09 inches 2000
5 0.08 inches 1915
6 0.05 inches 1963
7 0.04 inches 2007
8 0.02 inches 1973
8 0.02 inches 1979
10 0.01 inches 1961
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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