Boise September 1 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of September 1.
September 1 All-Time Records
1911–2024
Highest temperature 102 °F 1945
Lowest temperature 36 °F 1914
Lowest daily high 54 °F 1964
Highest daily low 66 °F 2009
Most precipitation 0.65 inches 1964
Most snow none -
September 1 Average Weather
1991–2020 1
Average high 85.8 °F
Average low 56.5 °F
Chance precipitation 9.3%
Chance snow 0%
Boise September 1 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 85 62 0.00 0.0
2022 97 64 0.00 0.0
2021 80 47 0.00 0.0
2020 84 49 0.00 0.0
2019 97 65 0.00 0.0
2018 82 52 0.00 0.0
2017 93 56 0.00 0.0
2016 86 58 0.00 0.0
2015 87 58 0.00 0.0
2014 77 49 0.00 0.0
2013 94 62 0.00 0.0
2012 85 57 0.00 0.0
2011 77 48 0.00 0.0
2010 78 60 0.00 0.0
2009 95 66 0.00 0.0
2008 70 48 0.00 0.0
2007 96 62 0.00 0.0
2006 84 46 0.00 0.0
2005 87 54 0.00 0.0
2004 90 64 0.00 0.0
2003 88 63 0.00 0.0
2002 87 57 0.00 0.0
2001 92 59 0.00 0.0
2000 71 54 0.10 0.0
1999 73 42 0.00 0.0
1998 98 66 0.00 0.0
1997 97 65 0.00 0.0
1996 77 49 0.00 0.0
1995 94 56 0.00 0.0
1994 87 55 0.00 0.0
1993 85 53 0.00 0.0
1992 85 59 0.00 0.0
1991 87 60 0.00 0.0
1990 91 50 0.00 0.0
1989 89 56 0.00 0.0
1988 90 50 0.00 0.0
1987 101 62 0.00 0.0
1986 77 47 0.00 0.0
1985 76 53 0.00 0.0
1984 73 47 0.00 0.0
1983 79 55 0.03 0.0
1982 86 50 0.00 0.0
1981 85 55 0.00 0.0
1980 79 45 0.00 0.0
1979 90 56 0.00 0.0
1978 88 55 0.00 0.0
1977 77 41 0.00 0.0
1976 100 61 0.00 0.0
1975 70 43 0.00 0.0
1974 89 52 0.00 0.0
1973 71 45 0.00 0.0
1972 84 50 0.00 0.0
1971 85 46 0.00 0.0
1970 85 57 0.00 0.0
1969 92 51 0.00 0.0
1968 84 53 0.00 0.0
1967 98 63 0.00 0.0
1966 80 44 0.00 0.0
1965 81 48 0.00 0.0
1964 54 48 0.65 0.0
1963 82 61 0.00 0.0
1962 88 52 0.00 0.0
1961 73 50 0.20 0.0
1960 93 48 0.00 0.0
1959 75 45 0.00 0.0
1958 84 57 0.00 0.0
1957 80 53 0.00 0.0
1956 89 51 0.00 0.0
1955 91 53 0.00 0.0
1954 94 53 0.00 0.0
1953 82 56 0.00 0.0
1952 77 46 0.00 0.0
1951 79 45 0.00 0.0
1950 96 60 0.00 0.0
1949 93 61 0.00 0.0
1948 92 55 0.00 0.0
1947 90 57 0.00 0.0
1946 87 52 0.00 0.0
1945 102 60 0.00 0.0
1944 68 51 0.07 0.0
1943 83 53 0.00 0.0
1942 84 47 0.00 0.0
1941 72 47 0.00 0.0
1940 93 66 0.00 0.0
1939 79 45 0.00 0.0
1938 91 60 0.00 0.0
1937 82 43 0.00 0.0
1936 87 59 0.00 0.0
1935 89 48 0.00 0.0
1934 89 47 0.00 0.0
1933 82 39 0.00 0.0
1932 84 44 0.00 n/a
1931 90 50 0.00 n/a
1930 80 38 0.00 n/a
1929 92 55 0.00 n/a
1928 91 44 0.00 n/a
1927 76 52 0.00 0.0
1926 76 42 0.00 0.0
1925 90 56 0.00 0.0
1924 92 39 0.00 0.0
1923 92 55 0.00 0.0
1922 81 45 0.00 0.0
1921 83 49 0.00 0.0
1920 85 45 0.00 0.0
1919 81 50 0.00 0.0
1918 91 50 0.00 0.0
1917 88 43 0.00 0.0
1916 94 60 0.00 0.0
1915 80 65 0.10 0.0
1914 83 36 0.00 0.0
1913 79 45 0.00 0.0
1912 71 47 0.00 0.0
1911 93 55 0.00 0.0
What's the all-time high for Boise on 9/1?
For the date of Sep 1, the highest temperature ever reached in Boise history is 102 °F which happened in 1945.
Highest Temperatures in Boise on September 1
Rank Temperature Year
1 102 °F 1945
2 101 °F 1987
3 100 °F 1976
4 98 °F 1998
4 98 °F 1967
6 97 °F 1997
6 97 °F 2019
6 97 °F 2022
9 96 °F 1950
9 96 °F 2007
What's the all-time low for Boise on 9/1?
For the date of Sep 1, the lowest temperature ever reached in Boise history is 36 °F which happened in 1914.
Lowest Temperatures in Boise on September 1
Rank Temperature Year
1 36 °F 1914
2 38 °F 1930
3 39 °F 1933
3 39 °F 1924
5 41 °F 1977
6 42 °F 1999
6 42 °F 1926
8 43 °F 1975
8 43 °F 1917
8 43 °F 1937
Lowest High Temperatures in Boise on September 1
Rank Temperature Year
1 54 °F 1964
2 68 °F 1944
3 70 °F 1975
3 70 °F 2008
5 71 °F 1912
5 71 °F 1973
5 71 °F 2000
8 72 °F 1941
9 73 °F 1999
9 73 °F 1961
9 73 °F 1984
What's the most it has ever rained in Boise on 9/1?
For the date of Sep 1, the most precipitation ever recorded in Boise history is 0.65 inches which happened in 1964.
All-Time Most Precipitation in Boise on September 1
Rank Precipitation Year
1 0.65 inches 1964
2 0.20 inches 1961
3 0.10 inches 1915
3 0.10 inches 2000
5 0.07 inches 1944
6 0.03 inches 1983
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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