Boise September 12 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of September 12.
September 12 All-Time Records
1911–2024
Highest temperature 94 °F 1963
Lowest temperature 32 °F 1970
Lowest daily high 59 °F 1927
Highest daily low 68 °F 2011
Most precipitation 0.26 inches 1980
Most snow none -
September 12 Average Weather
1991–2020 1
Average high 81.1 °F
Average low 53.1 °F
Chance precipitation 12.5%
Chance snow 0%
Boise September 12 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 87 62 0.00 0.0
2022 85 60 0.00 0.0
2021 84 54 0.00 0.0
2020 84 57 0.00 0.0
2019 80 51 0.00 0.0
2018 71 48 0.00 0.0
2017 89 63 0.00 0.0
2016 72 46 0.00 0.0
2015 93 59 0.00 0.0
2014 79 45 0.00 0.0
2013 85 63 0.05 0.0
2012 78 44 0.00 0.0
2011 91 68 0.00 0.0
2010 87 51 0.00 0.0
2009 91 62 0.00 0.0
2008 83 51 0.00 0.0
2007 90 52 0.00 0.0
2006 91 57 0.00 0.0
2005 71 44 0.00 0.0
2004 69 53 0.16 0.0
2003 70 54 0.00 0.0
2002 88 59 0.00 0.0
2001 86 68 0.00 0.0
2000 89 57 0.00 0.0
1999 79 46 0.00 0.0
1998 78 58 0.00 0.0
1997 75 53 0.00 0.0
1996 90 62 0.00 0.0
1995 88 52 0.00 0.0
1994 77 51 0.00 0.0
1993 65 45 0.00 0.0
1992 69 46 0.03 0.0
1991 81 53 0.00 0.0
1990 88 54 0.00 0.0
1989 74 41 0.00 0.0
1988 67 38 0.00 0.0
1987 87 57 0.00 0.0
1986 75 54 0.00 0.0
1985 64 43 0.00 0.0
1984 70 39 0.00 0.0
1983 82 46 0.00 0.0
1982 67 48 0.00 0.0
1981 90 52 0.00 0.0
1980 80 53 0.26 0.0
1979 79 40 0.00 0.0
1978 63 37 0.00 0.0
1977 81 45 0.00 0.0
1976 68 49 0.01 0.0
1975 88 57 0.00 0.0
1974 70 43 0.00 0.0
1973 88 52 0.00 0.0
1972 61 45 0.00 0.0
1971 85 48 0.00 0.0
1970 61 32 0.00 0.0
1969 84 55 0.00 0.0
1968 81 56 0.00 0.0
1967 64 43 0.00 0.0
1966 70 48 0.00 0.0
1965 76 50 0.00 0.0
1964 82 46 0.00 0.0
1963 94 62 0.00 0.0
1962 76 50 0.04 0.0
1961 74 40 0.00 0.0
1960 89 58 0.03 0.0
1959 91 66 0.00 0.0
1958 79 46 0.01 0.0
1957 83 50 0.00 0.0
1956 76 49 0.00 0.0
1955 81 47 0.00 0.0
1954 72 47 0.00 0.0
1953 91 55 0.00 0.0
1952 68 39 0.00 0.0
1951 71 43 0.00 0.0
1950 74 44 0.00 0.0
1949 72 34 0.00 0.0
1948 93 56 0.00 0.0
1947 82 49 0.00 0.0
1946 86 52 0.00 0.0
1945 87 53 0.00 0.0
1944 89 61 0.00 0.0
1943 86 54 0.00 0.0
1942 75 45 0.00 0.0
1941 66 40 0.00 0.0
1940 86 62 0.04 0.0
1939 70 43 0.22 0.0
1938 84 45 0.00 0.0
1937 87 55 0.00 0.0
1936 76 38 0.00 0.0
1935 90 45 0.00 0.0
1934 81 43 0.00 0.0
1933 80 47 0.00 0.0
1932 81 41 0.00 n/a
1931 82 45 0.00 n/a
1930 78 40 0.00 n/a
1929 86 40 0.00 n/a
1928 76 42 0.17 n/a
1927 59 43 0.00 0.0
1926 82 47 0.00 0.0
1925 84 48 0.00 0.0
1924 87 42 0.00 0.0
1923 86 48 0.00 0.0
1922 92 48 0.00 0.0
1921 59 32 0.00 0.0
1920 76 59 0.00 0.0
1919 70 39 0.00 0.0
1918 74 56 0.00 0.0
1917 90 44 0.00 0.0
1916 83 43 0.00 0.0
1915 62 38 0.02 0.0
1914 61 39 0.11 0.0
1913 93 49 0.00 0.0
1912 77 46 0.00 0.0
1911 86 56 0.00 0.0
What's the all-time high for Boise on 9/12?
For the date of Sep 12, the highest temperature ever reached in Boise history is 94 °F which happened in 1963.
Highest Temperatures in Boise on September 12
Rank Temperature Year
1 94 °F 1963
2 93 °F 2015
2 93 °F 1913
2 93 °F 1948
5 92 °F 1922
6 91 °F 2011
6 91 °F 2006
6 91 °F 1959
6 91 °F 1953
6 91 °F 2009
What's the all-time low for Boise on 9/12?
For the date of Sep 12, the lowest temperature ever reached in Boise history is 32 °F which has happened 2 times, most recently in 1970.
Lowest Temperatures in Boise on September 12
Rank Temperature Year
1 32 °F 1970
1 32 °F 1921
3 34 °F 1949
4 37 °F 1978
5 38 °F 1915
5 38 °F 1936
5 38 °F 1988
8 39 °F 1952
8 39 °F 1914
8 39 °F 1984
8 39 °F 1919
Lowest High Temperatures in Boise on September 12
Rank Temperature Year
1 59 °F 1927
1 59 °F 1921
3 61 °F 1970
3 61 °F 1972
3 61 °F 1914
6 62 °F 1915
7 63 °F 1978
8 64 °F 1967
8 64 °F 1985
10 65 °F 1993
What's the most it has ever rained in Boise on 9/12?
For the date of Sep 12, the most precipitation ever recorded in Boise history is 0.26 inches which happened in 1980.
All-Time Most Precipitation in Boise on September 12
Rank Precipitation Year
1 0.26 inches 1980
2 0.22 inches 1939
3 0.17 inches 1928
4 0.16 inches 2004
5 0.11 inches 1914
6 0.05 inches 2013
7 0.04 inches 1962
7 0.04 inches 1940
9 0.03 inches 1960
9 0.03 inches 1992
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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