Bozeman September 21 Weather Records

Daily averages and all-time records for weather in Bozeman, Montana for the date of September 21.
September 21 All-Time Records
1892–2024
Highest temperature 86 °F 1967
Lowest temperature 24 °F 1895
Lowest daily high 39 °F 1968
Highest daily low 50 °F 2015
Most precipitation 1.53 inches 1984
Most snow 2.0 inches 1968
September 21 Average Weather
1991–2020 1
Average high 70.0 °F
Average low 40.7 °F
Chance precipitation 31.2%
Chance snow 2.3%
Bozeman September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 65 45 0.10 0.0
2022 53 44 0.00 0.0
2021 66 29 0.00 0.0
2020 73 39 0.00 0.0
2019 59 41 0.99 0.0
2018 75 34 0.00 0.0
2017 54 39 0.16 0.0
2016 61 43 0.12 0.0
2015 76 50 0.00 0.0
2014 76 49 0.00 0.0
2013 79 44 0.00 0.0
2012 77 44 0.00 0.0
2011 68 36 0.00 0.0
2010 63 38 0.00 0.0
2009 61 31 0.00 0.0
2008 62 41 0.06 0.0
2007 70 34 0.26 0.0
2006 56 39 0.37 0.0
2005 79 45 0.00 0.0
2004 51 33 0.01 0.0
2003 66 32 0.00 0.0
2002 64 31 0.00 0.0
2001 79 38 0.00 0.0
2000 54 31 0.51 0.3
1999 76 35 0.00 0.0
1998 59 37 0.00 0.0
1997 61 46 0.00 0.0
1996 61 43 0.00 0.0
1995 n/a n/a n/a n/a
1994 73 36 0.01 0.0
1993 68 32 0.01 0.0
1992 72 49 0.10 0.0
1991 83 46 0.01 0.0
1990 69 39 0.00 0.0
1989 66 37 0.00 0.0
1988 60 36 0.01 0.0
1987 79 44 0.00 0.0
1986 56 33 0.04 0.0
1985 62 42 0.03 0.0
1984 73 36 1.53 0.0
1983 59 26 0.00 0.0
1982 79 42 0.00 0.0
1981 60 36 0.00 0.0
1980 59 37 0.57 0.0
1979 84 48 0.00 0.0
1978 65 32 0.00 0.0
1977 63 41 0.26 0.0
1976 73 41 0.00 0.0
1975 65 32 0.00 0.0
1974 66 34 0.00 0.0
1973 61 41 0.16 0.0
1972 70 34 0.00 0.0
1971 50 31 0.00 0.0
1970 55 31 0.00 0.0
1969 57 42 0.43 0.0
1968 39 27 0.24 2.0
1967 86 48 0.00 0.0
1966 82 50 0.00 0.0
1965 49 36 0.20 0.0
1964 57 40 0.03 0.0
1963 n/a n/a n/a n/a
1962 66 48 0.03 0.0
1961 47 32 0.22 n/a
1960 60 37 0.13 0.0
1959 51 33 1.27 0.0
1958 76 38 0.00 0.0
1957 56 33 0.01 n/a
1956 74 44 0.36 0.0
1955 53 31 0.48 0.0
1954 77 40 0.00 0.0
1953 72 38 0.00 0.0
1952 67 38 0.00 0.0
1951 51 34 0.08 0.0
1950 67 n/a 0.00 0.0
1949 73 36 0.00 0.0
1948 80 43 0.00 n/a
1947 70 40 0.00 n/a
1946 64 40 0.00 n/a
1945 59 38 0.18 n/a
1944 71 44 0.00 n/a
1943 70 45 0.00 n/a
1942 67 44 0.00 n/a
1941 49 32 0.22 n/a
1940 61 41 0.21 n/a
1939 78 48 0.00 n/a
1938 82 49 0.00 n/a
1937 70 45 0.22 n/a
1936 85 47 0.00 n/a
1935 79 45 0.00 n/a
1934 65 32 0.00 n/a
1933 74 37 0.00 n/a
1932 55 32 0.00 n/a
1931 54 34 0.38 0.0
1930 79 39 0.00 n/a
1929 59 41 0.09 n/a
1928 71 35 0.00 n/a
1927 71 40 0.00 n/a
1926 56 35 0.01 n/a
1925 47 35 0.01 n/a
1924 65 31 0.00 n/a
1923 79 50 0.00 n/a
1922 83 50 0.00 n/a
1921 66 33 0.00 n/a
1920 75 37 0.00 n/a
1919 55 38 0.00 n/a
1918 84 45 0.00 n/a
1917 81 49 0.00 n/a
1916 75 37 0.00 n/a
1915 74 35 0.00 n/a
1914 52 34 0.68 n/a
1913 72 39 0.00 n/a
1912 58 28 0.00 n/a
1911 70 36 0.00 n/a
1910 69 45 0.72 n/a
1909 50 35 0.06 n/a
1908 74 42 0.00 n/a
1907 68 33 0.00 n/a
1906 80 46 0.00 n/a
1905 80 45 0.00 n/a
1904 70 41 0.00 n/a
1903 79 39 0.00 n/a
1902 63 31 0.00 n/a
1901 51 38 0.00 n/a
1900 64 36 0.00 n/a
1899 n/a n/a n/a n/a
1898 76 40 0.00 n/a
1897 79 42 0.00 n/a
1896 72 45 0.00 n/a
1895 39 24 0.22 n/a
1894 65 50 0.00 n/a
1893 n/a n/a n/a n/a
1892 64 39 0.05 n/a
What's the all-time high for Bozeman on 9/21?
For the date of Sep 21, the highest temperature ever reached in Bozeman history is 86 °F which happened in 1967.
Highest Temperatures in Bozeman on September 21
Rank Temperature Year
1 86 °F 1967
2 85 °F 1936
3 84 °F 1918
3 84 °F 1979
5 83 °F 1922
5 83 °F 1991
7 82 °F 1938
7 82 °F 1966
9 81 °F 1917
10 80 °F 1948
10 80 °F 1906
10 80 °F 1905
What's the all-time low for Bozeman on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Bozeman history is 24 °F which happened in 1895.
Lowest Temperatures in Bozeman on September 21
Rank Temperature Year
1 24 °F 1895
2 26 °F 1983
3 27 °F 1968
4 28 °F 1912
5 29 °F 2021
6 31 °F 1902
6 31 °F 1971
6 31 °F 2002
6 31 °F 1924
6 31 °F 1970
6 31 °F 2009
6 31 °F 2000
6 31 °F 1955
Lowest High Temperatures in Bozeman on September 21
Rank Temperature Year
1 39 °F 1895
1 39 °F 1968
3 47 °F 1925
3 47 °F 1961
5 49 °F 1965
5 49 °F 1941
7 50 °F 1909
7 50 °F 1971
9 51 °F 2004
9 51 °F 1959
9 51 °F 1901
9 51 °F 1951
What's the most it has ever rained in Bozeman on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Bozeman history is 1.53 inches which happened in 1984.
All-Time Most Precipitation in Bozeman on September 21
Rank Precipitation Year
1 1.53 inches 1984
2 1.27 inches 1959
3 0.99 inches 2019
4 0.72 inches 1910
5 0.68 inches 1914
6 0.57 inches 1980
7 0.51 inches 2000
8 0.48 inches 1955
9 0.43 inches 1969
10 0.38 inches 1931
All-Time Most Snow in Bozeman on September 21
Rank Precipitation Year
1 2.0 inches 1968
2 0.3 inches 2000
Weather Station Details
Years Station Coordinates
1892–2024 Bozeman Montana State University location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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