Bozeman September 20 Weather Records

Daily averages and all-time records for weather in Bozeman, Montana for the date of September 20.
September 20 All-Time Records
1892–2024
Highest temperature 85 °F 2009
Lowest temperature 16 °F 1983
Lowest daily high 43 °F 1925
Highest daily low 54 °F 2009
Most precipitation 0.91 inches 1940
Most snow 3.6 inches 1971
September 20 Average Weather
1991–2020 1
Average high 70.5 °F
Average low 41.1 °F
Chance precipitation 31.2%
Chance snow 1.9%
Bozeman September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 73 37 0.00 0.0
2022 72 44 0.00 0.0
2021 54 41 0.05 0.0
2020 63 48 0.06 0.0
2019 60 41 0.75 0.0
2018 60 43 0.02 0.0
2017 54 34 0.20 0.0
2016 72 43 0.02 0.0
2015 75 39 0.00 0.0
2014 74 42 0.00 0.0
2013 69 37 0.00 0.0
2012 76 45 0.00 0.0
2011 66 33 0.02 0.0
2010 82 47 0.00 0.0
2009 85 54 0.21 0.0
2008 84 53 0.03 0.0
2007 67 38 0.03 0.0
2006 66 40 0.13 0.0
2005 80 38 0.00 0.0
2004 52 32 0.42 0.0
2003 70 39 0.00 0.0
2002 71 40 0.00 0.0
2001 73 35 0.00 0.0
2000 57 29 0.00 0.0
1999 69 31 0.00 0.0
1998 54 38 0.02 0.0
1997 62 38 0.00 0.0
1996 62 36 0.02 0.0
1995 n/a n/a n/a n/a
1994 76 45 0.00 0.0
1993 71 44 0.01 0.0
1992 72 41 0.00 0.0
1991 83 44 0.00 0.0
1990 69 47 0.02 0.0
1989 66 37 0.00 0.0
1988 55 41 0.29 0.0
1987 74 41 0.00 0.0
1986 54 39 0.06 0.0
1985 60 30 0.05 0.0
1984 79 53 0.02 0.0
1983 44 16 0.00 0.0
1982 66 45 0.00 0.0
1981 59 36 0.12 0.0
1980 61 39 0.00 0.0
1979 76 45 0.00 0.0
1978 55 29 0.00 0.0
1977 68 43 0.03 0.0
1976 66 38 0.00 0.0
1975 59 32 0.00 0.0
1974 65 42 0.00 0.0
1973 65 46 0.42 0.0
1972 54 36 0.15 0.0
1971 62 32 0.41 3.6
1970 62 34 0.62 0.0
1969 59 43 0.12 0.0
1968 58 35 0.44 0.0
1967 75 53 0.00 0.0
1966 80 44 0.00 0.0
1965 51 35 0.11 0.0
1964 61 39 0.04 0.0
1963 n/a n/a n/a n/a
1962 67 42 0.00 0.0
1961 51 35 0.33 0.0
1960 79 46 0.00 0.0
1959 61 40 0.08 0.0
1958 59 35 0.00 0.0
1957 47 32 n/a n/a
1956 85 52 0.00 0.0
1955 61 45 0.14 0.0
1954 67 40 0.00 0.0
1953 64 31 0.00 0.0
1952 76 44 0.00 0.0
1951 68 34 0.83 0.0
1950 63 n/a 0.00 0.0
1949 69 40 0.00 0.0
1948 73 39 0.06 n/a
1947 62 37 0.00 n/a
1946 69 39 0.00 n/a
1945 60 38 0.00 n/a
1944 71 46 0.00 n/a
1943 71 40 0.00 n/a
1942 68 36 0.00 n/a
1941 50 32 0.38 n/a
1940 64 49 0.91 n/a
1939 79 41 0.00 n/a
1938 83 50 0.00 n/a
1937 80 53 0.00 n/a
1936 80 43 0.00 n/a
1935 72 44 0.00 n/a
1934 48 25 0.01 n/a
1933 78 48 0.00 n/a
1932 54 43 0.21 n/a
1931 60 43 0.39 n/a
1930 68 35 0.00 n/a
1929 75 44 0.00 n/a
1928 58 29 0.00 n/a
1927 68 37 0.00 n/a
1926 63 36 0.00 n/a
1925 43 31 0.00 n/a
1924 49 32 0.49 n/a
1923 81 45 0.00 n/a
1922 83 45 0.00 n/a
1921 56 36 0.09 n/a
1920 81 53 0.00 n/a
1919 74 50 0.00 n/a
1918 80 45 0.00 n/a
1917 79 46 0.00 n/a
1916 72 41 0.00 n/a
1915 62 34 0.00 n/a
1914 53 33 0.91 n/a
1913 71 34 0.00 n/a
1912 47 31 0.00 n/a
1911 62 33 0.00 n/a
1910 73 48 0.00 n/a
1909 58 36 0.03 n/a
1908 71 41 0.00 n/a
1907 62 29 0.00 n/a
1906 77 43 0.00 n/a
1905 75 48 0.00 n/a
1904 65 34 0.00 n/a
1903 73 40 0.00 n/a
1902 49 34 0.00 n/a
1901 81 30 0.00 n/a
1900 64 36 0.00 n/a
1899 n/a n/a n/a n/a
1898 75 47 0.00 n/a
1897 77 46 0.00 n/a
1896 70 40 0.00 n/a
1895 n/a 34 0.43 n/a
1894 60 41 0.00 n/a
1893 n/a n/a n/a n/a
1892 71 39 0.00 n/a
What's the all-time high for Bozeman on 9/20?
For the date of Sep 20, the highest temperature ever reached in Bozeman history is 85 °F which has happened 2 times, most recently in 2009.
Highest Temperatures in Bozeman on September 20
Rank Temperature Year
1 85 °F 1956
1 85 °F 2009
3 84 °F 2008
4 83 °F 1938
4 83 °F 1922
4 83 °F 1991
7 82 °F 2010
8 81 °F 1901
8 81 °F 1920
8 81 °F 1923
What's the all-time low for Bozeman on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Bozeman history is 16 °F which happened in 1983.
Lowest Temperatures in Bozeman on September 20
Rank Temperature Year
1 16 °F 1983
2 25 °F 1934
3 29 °F 1907
3 29 °F 1978
3 29 °F 2000
3 29 °F 1928
7 30 °F 1985
7 30 °F 1901
9 31 °F 1925
9 31 °F 1999
9 31 °F 1912
9 31 °F 1953
Lowest High Temperatures in Bozeman on September 20
Rank Temperature Year
1 43 °F 1925
2 44 °F 1983
3 47 °F 1957
3 47 °F 1912
5 48 °F 1934
6 49 °F 1924
6 49 °F 1902
8 50 °F 1941
9 51 °F 1961
9 51 °F 1965
What's the most it has ever rained in Bozeman on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Bozeman history is 0.91 inches which has happened 2 times, most recently in 1940.
All-Time Most Precipitation in Bozeman on September 20
Rank Precipitation Year
1 0.91 inches 1914
1 0.91 inches 1940
3 0.83 inches 1951
4 0.75 inches 2019
5 0.62 inches 1970
6 0.49 inches 1924
7 0.44 inches 1968
8 0.43 inches 1895
9 0.42 inches 1973
9 0.42 inches 2004
All-Time Most Snow in Bozeman on September 20
Rank Precipitation Year
1 3.6 inches 1971
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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