Boise September 9 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of September 9.
September 9 All-Time Records
1911–2024
Highest temperature 98 °F 2021
Lowest temperature 33 °F 1914
Lowest daily high 55 °F 1985
Highest daily low 69 °F 2017
Most precipitation 0.75 inches 1950
Most snow none -
September 9 Average Weather
1991–2020 1
Average high 82.3 °F
Average low 54.0 °F
Chance precipitation 11.7%
Chance snow 0%
Boise September 9 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 90 58 0.00 0.0
2022 78 46 0.00 0.0
2021 98 64 0.00 0.0
2020 78 47 0.00 0.0
2019 74 52 0.00 0.0
2018 84 52 0.00 0.0
2017 89 69 0.00 0.0
2016 77 44 0.00 0.0
2015 89 55 0.00 0.0
2014 78 50 0.00 0.0
2013 85 54 0.00 0.0
2012 93 67 0.01 0.0
2011 89 59 0.00 0.0
2010 67 49 0.00 0.0
2009 86 54 0.00 0.0
2008 84 56 0.00 0.0
2007 79 44 0.00 0.0
2006 85 59 0.00 0.0
2005 79 51 0.04 0.0
2004 81 54 0.00 0.0
2003 67 49 0.00 0.0
2002 77 47 0.00 0.0
2001 84 50 0.00 0.0
2000 67 44 0.00 0.0
1999 86 55 0.00 0.0
1998 70 62 0.46 0.0
1997 95 58 0.00 0.0
1996 89 54 0.00 0.0
1995 78 45 0.00 0.0
1994 77 50 0.00 0.0
1993 91 52 0.00 0.0
1992 78 44 0.00 0.0
1991 71 50 0.03 0.0
1990 92 57 0.00 0.0
1989 75 50 0.00 0.0
1988 87 50 0.00 0.0
1987 87 50 0.00 0.0
1986 65 49 0.02 0.0
1985 55 48 0.33 0.0
1984 82 52 0.00 0.0
1983 67 44 0.00 0.0
1982 91 57 0.00 0.0
1981 91 61 0.00 0.0
1980 84 54 0.00 0.0
1979 75 49 0.00 0.0
1978 81 50 0.09 0.0
1977 80 45 0.00 0.0
1976 82 47 0.00 0.0
1975 89 50 0.00 0.0
1974 87 50 0.00 0.0
1973 79 50 0.00 0.0
1972 72 52 0.00 0.0
1971 86 59 0.00 0.0
1970 71 34 0.00 0.0
1969 91 68 0.00 0.0
1968 93 54 0.00 0.0
1967 85 56 0.00 0.0
1966 85 53 0.00 0.0
1965 78 52 0.00 0.0
1964 71 41 0.00 0.0
1963 89 59 0.00 0.0
1962 77 43 0.00 0.0
1961 64 52 0.00 0.0
1960 83 51 0.00 0.0
1959 84 41 0.00 0.0
1958 87 57 0.00 0.0
1957 74 39 0.00 0.0
1956 91 57 0.00 0.0
1955 80 53 0.00 0.0
1954 91 52 0.00 0.0
1953 88 52 0.00 0.0
1952 69 49 0.00 0.0
1951 80 47 0.00 0.0
1950 64 55 0.75 0.0
1949 85 58 0.00 0.0
1948 84 49 0.00 0.0
1947 69 51 0.00 0.0
1946 77 47 0.00 0.0
1945 77 36 0.00 0.0
1944 92 57 0.00 0.0
1943 88 50 0.00 0.0
1942 74 49 0.01 0.0
1941 75 53 0.00 0.0
1940 90 63 0.31 0.0
1939 89 45 0.00 0.0
1938 72 38 0.00 0.0
1937 88 46 0.00 0.0
1936 84 47 0.00 0.0
1935 93 43 0.00 0.0
1934 80 36 0.00 0.0
1933 71 38 0.00 0.0
1932 78 37 0.00 n/a
1931 74 39 0.15 n/a
1930 85 46 0.00 n/a
1929 80 35 0.00 n/a
1928 70 37 0.00 n/a
1927 61 45 0.00 0.0
1926 89 40 0.00 0.0
1925 80 44 0.00 0.0
1924 80 50 0.00 0.0
1923 91 49 0.00 0.0
1922 77 38 0.00 0.0
1921 71 45 0.00 0.0
1920 77 47 0.01 0.0
1919 80 46 0.00 0.0
1918 75 50 0.06 0.0
1917 92 45 0.00 0.0
1916 63 43 0.07 0.0
1915 68 41 0.00 0.0
1914 72 33 0.00 0.0
1913 76 44 0.00 0.0
1912 73 41 0.00 0.0
1911 86 51 0.00 0.0
What's the all-time high for Boise on 9/9?
For the date of Sep 9, the highest temperature ever reached in Boise history is 98 °F which happened in 2021.
Highest Temperatures in Boise on September 9
Rank Temperature Year
1 98 °F 2021
2 95 °F 1997
3 93 °F 2012
3 93 °F 1968
3 93 °F 1935
6 92 °F 1990
6 92 °F 1917
6 92 °F 1944
9 91 °F 1982
9 91 °F 1993
9 91 °F 1956
9 91 °F 1923
9 91 °F 1954
9 91 °F 1981
9 91 °F 1969
What's the all-time low for Boise on 9/9?
For the date of Sep 9, the lowest temperature ever reached in Boise history is 33 °F which happened in 1914.
Lowest Temperatures in Boise on September 9
Rank Temperature Year
1 33 °F 1914
2 34 °F 1970
3 35 °F 1929
4 36 °F 1934
4 36 °F 1945
6 37 °F 1932
6 37 °F 1928
8 38 °F 1922
8 38 °F 1933
8 38 °F 1938
Lowest High Temperatures in Boise on September 9
Rank Temperature Year
1 55 °F 1985
2 61 °F 1927
3 63 °F 1916
4 64 °F 1961
4 64 °F 1950
6 65 °F 1986
7 67 °F 2003
7 67 °F 2010
7 67 °F 2000
7 67 °F 1983
What's the most it has ever rained in Boise on 9/9?
For the date of Sep 9, the most precipitation ever recorded in Boise history is 0.75 inches which happened in 1950.
All-Time Most Precipitation in Boise on September 9
Rank Precipitation Year
1 0.75 inches 1950
2 0.46 inches 1998
3 0.33 inches 1985
4 0.31 inches 1940
5 0.15 inches 1931
6 0.09 inches 1978
7 0.07 inches 1916
8 0.06 inches 1918
9 0.04 inches 2005
10 0.03 inches 1991
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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