Bozeman September 18 Weather Records

Daily averages and all-time records for weather in Bozeman, Montana for the date of September 18.
September 18 All-Time Records
1892–2024
Highest temperature 87 °F 1981
Lowest temperature 16 °F 1965
Lowest daily high 38 °F 1947
Highest daily low 58 °F 2016
Most precipitation 0.84 inches 1978
Most snow 2.0 inches 1978
September 18 Average Weather
1991–2020 1
Average high 71.7 °F
Average low 41.9 °F
Chance precipitation 30.8%
Chance snow 1.3%
Bozeman September 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 80 43 0.00 0.0
2022 70 39 0.03 0.0
2021 80 53 0.00 0.0
2020 75 46 0.00 0.0
2019 75 41 0.00 0.0
2018 71 40 0.00 0.0
2017 60 43 0.00 0.0
2016 70 58 0.00 0.0
2015 59 39 0.10 0.0
2014 78 45 0.16 0.0
2013 63 43 0.62 0.0
2012 76 41 0.00 0.0
2011 66 41 0.00 0.0
2010 56 35 0.10 0.0
2009 85 51 0.00 0.0
2008 81 43 0.00 0.0
2007 64 36 0.10 0.0
2006 65 34 0.00 0.0
2005 61 48 0.31 0.0
2004 n/a 41 0.00 0.0
2003 63 27 0.00 0.0
2002 57 43 0.36 0.0
2001 76 39 0.00 0.0
2000 80 47 0.00 0.0
1999 79 38 0.00 0.0
1998 83 55 0.02 0.0
1997 68 45 0.12 0.0
1996 57 31 0.00 0.0
1995 n/a n/a n/a n/a
1994 82 49 0.00 0.0
1993 67 36 0.00 0.0
1992 66 30 0.00 0.0
1991 60 30 0.00 0.0
1990 74 50 0.00 0.0
1989 64 43 0.14 0.0
1988 57 31 0.16 0.5
1987 68 34 0.00 0.0
1986 62 42 0.07 0.0
1985 59 39 0.08 0.0
1984 85 49 0.00 0.0
1983 49 36 0.17 0.0
1982 69 39 0.00 0.0
1981 87 49 0.00 0.0
1980 76 42 0.00 0.0
1979 84 46 0.00 0.0
1978 52 32 0.84 2.0
1977 65 35 0.06 0.0
1976 76 47 0.72 0.0
1975 49 39 0.04 0.0
1974 77 42 0.00 0.0
1973 71 41 0.00 0.0
1972 82 45 0.00 0.0
1971 57 26 0.00 0.0
1970 82 46 0.00 0.0
1969 81 53 0.00 0.0
1968 74 51 0.00 0.0
1967 63 36 0.04 0.0
1966 83 45 0.00 0.0
1965 43 16 0.00 0.0
1964 76 39 0.00 0.0
1963 65 44 0.02 0.0
1962 76 44 0.00 0.0
1961 73 46 0.28 0.0
1960 77 39 0.00 0.0
1959 68 39 0.00 0.0
1958 67 37 0.00 0.0
1957 51 32 0.00 n/a
1956 82 47 0.00 0.0
1955 55 43 0.18 0.0
1954 62 35 0.18 0.0
1953 70 40 0.00 0.0
1952 78 48 0.00 0.0
1951 70 49 0.12 0.0
1950 63 n/a 0.00 0.0
1949 70 33 0.00 0.0
1948 75 54 0.00 n/a
1947 38 28 0.50 n/a
1946 57 33 0.00 n/a
1945 46 32 0.06 0.0
1944 56 27 0.00 n/a
1943 75 40 0.06 n/a
1942 47 32 0.08 n/a
1941 78 54 0.00 n/a
1940 71 49 0.02 n/a
1939 78 40 0.00 n/a
1938 84 45 0.00 n/a
1937 84 51 0.00 n/a
1936 70 38 0.00 n/a
1935 69 38 0.00 n/a
1934 80 46 0.00 n/a
1933 72 51 0.00 n/a
1932 76 40 0.00 n/a
1931 75 37 0.00 n/a
1930 76 43 0.00 n/a
1929 74 44 0.00 n/a
1928 77 47 0.00 n/a
1927 n/a 38 0.00 n/a
1926 57 33 0.01 n/a
1925 68 43 0.00 n/a
1924 53 33 0.62 n/a
1923 68 33 0.00 n/a
1922 69 41 0.00 n/a
1921 67 43 0.00 n/a
1920 82 54 0.03 n/a
1919 75 46 0.00 n/a
1918 67 43 0.00 n/a
1917 65 40 0.00 n/a
1916 79 42 0.00 n/a
1915 75 40 0.00 n/a
1914 80 49 0.09 n/a
1913 70 44 0.03 n/a
1912 71 37 0.00 n/a
1911 57 35 0.00 n/a
1910 72 46 0.17 n/a
1909 52 32 0.00 n/a
1908 63 40 0.00 n/a
1907 58 38 0.00 n/a
1906 72 43 0.00 n/a
1905 n/a n/a n/a n/a
1904 77 40 0.00 n/a
1903 69 34 0.00 n/a
1902 68 32 0.00 n/a
1901 53 34 0.00 n/a
1900 48 38 0.53 n/a
1899 n/a n/a n/a n/a
1898 82 48 0.00 n/a
1897 75 44 0.00 n/a
1896 60 40 0.00 n/a
1895 75 46 0.00 n/a
1894 72 40 0.00 n/a
1893 n/a n/a n/a n/a
1892 78 54 0.00 n/a
What's the all-time high for Bozeman on 9/18?
For the date of Sep 18, the highest temperature ever reached in Bozeman history is 87 °F which happened in 1981.
Highest Temperatures in Bozeman on September 18
Rank Temperature Year
1 87 °F 1981
2 85 °F 2009
2 85 °F 1984
4 84 °F 1938
4 84 °F 1937
4 84 °F 1979
7 83 °F 1998
7 83 °F 1966
9 82 °F 1920
9 82 °F 1898
9 82 °F 1956
9 82 °F 1970
9 82 °F 1994
9 82 °F 1972
What's the all-time low for Bozeman on 9/18?
For the date of Sep 18, the lowest temperature ever reached in Bozeman history is 16 °F which happened in 1965.
Lowest Temperatures in Bozeman on September 18
Rank Temperature Year
1 16 °F 1965
2 26 °F 1971
3 27 °F 2003
3 27 °F 1944
5 28 °F 1947
6 30 °F 1991
6 30 °F 1992
8 31 °F 1996
8 31 °F 1988
10 32 °F 1902
10 32 °F 1942
10 32 °F 1945
10 32 °F 1957
10 32 °F 1909
10 32 °F 1978
Lowest High Temperatures in Bozeman on September 18
Rank Temperature Year
1 38 °F 1947
2 43 °F 1965
3 46 °F 1945
4 47 °F 1942
5 48 °F 1900
6 49 °F 1983
6 49 °F 1975
8 51 °F 1957
9 52 °F 1909
9 52 °F 1978
What's the most it has ever rained in Bozeman on 9/18?
For the date of Sep 18, the most precipitation ever recorded in Bozeman history is 0.84 inches which happened in 1978.
All-Time Most Precipitation in Bozeman on September 18
Rank Precipitation Year
1 0.84 inches 1978
2 0.72 inches 1976
3 0.62 inches 1924
3 0.62 inches 2013
5 0.53 inches 1900
6 0.50 inches 1947
7 0.36 inches 2002
8 0.31 inches 2005
9 0.28 inches 1961
10 0.18 inches 1955
10 0.18 inches 1954
All-Time Most Snow in Bozeman on September 18
Rank Precipitation Year
1 2.0 inches 1978
2 0.5 inches 1988
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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