Bozeman August 21 Weather Records

Daily averages and all-time records for weather in Bozeman, Montana for the date of August 21.
August 21 All-Time Records
1892–2024
Highest temperature 92 °F 2009
Lowest temperature 34 °F 1904
Lowest daily high 56 °F 1918
Highest daily low 60 °F 2006
Most precipitation 0.55 inches 1954
Most snow none -
August 21 Average Weather
1991–2020 1
Average high 81.7 °F
Average low 49.3 °F
Chance precipitation 30.6%
Chance snow 0.1%
Bozeman August 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 90 56 0.11 0.0
2022 90 57 0.00 0.0
2021 65 50 0.01 0.0
2020 83 54 0.00 0.0
2019 88 59 0.00 0.0
2018 57 45 0.17 0.0
2017 79 45 0.00 0.0
2016 82 50 0.00 0.0
2015 80 46 0.00 0.0
2014 68 53 0.16 0.0
2013 86 53 0.00 0.0
2012 87 52 0.00 0.0
2011 84 54 0.02 0.0
2010 88 50 0.00 0.0
2009 92 57 0.00 0.0
2008 82 48 0.04 0.0
2007 73 51 0.02 0.0
2006 84 60 0.00 0.0
2005 88 48 0.00 0.0
2004 81 51 0.00 0.0
2003 84 58 0.00 0.0
2002 84 45 0.06 0.0
2001 84 47 0.00 0.0
2000 73 39 0.00 0.0
1999 84 51 0.01 0.0
1998 83 49 0.00 0.0
1997 83 49 0.03 0.0
1996 85 46 0.00 0.0
1995 91 55 0.00 0.0
1994 87 52 0.09 0.0
1993 74 55 0.35 0.0
1992 77 50 0.05 0.0
1991 89 54 0.00 0.0
1990 78 48 0.05 0.0
1989 71 45 0.00 0.0
1988 81 45 0.00 0.0
1987 84 48 0.00 0.0
1986 75 52 0.41 0.0
1985 80 47 0.00 0.0
1984 79 47 0.00 0.0
1983 77 53 0.19 0.0
1982 87 56 0.07 0.0
1981 86 55 0.17 0.0
1980 76 47 0.00 0.0
1979 77 48 0.00 0.0
1978 81 44 0.00 0.0
1977 84 51 0.00 0.0
1976 86 46 0.00 0.0
1975 77 51 0.00 0.0
1974 71 41 0.02 0.0
1973 85 55 0.00 0.0
1972 79 48 0.00 0.0
1971 87 51 0.00 0.0
1970 82 41 0.00 0.0
1969 88 55 0.00 0.0
1968 63 39 0.35 0.0
1967 88 53 0.00 0.0
1966 64 40 0.05 0.0
1965 67 49 0.00 0.0
1964 69 46 0.00 0.0
1963 72 42 0.00 0.0
1962 87 52 0.00 0.0
1961 85 52 0.00 0.0
1960 90 55 0.00 0.0
1959 80 45 0.00 0.0
1958 80 53 0.00 0.0
1957 87 52 0.00 0.0
1956 82 50 0.00 0.0
1955 82 48 0.00 0.0
1954 59 46 0.55 0.0
1953 87 53 0.00 0.0
1952 85 49 0.00 0.0
1951 83 48 0.00 0.0
1950 76 47 0.00 0.0
1949 88 50 0.00 0.0
1948 82 43 0.00 n/a
1947 81 51 0.00 n/a
1946 90 58 0.00 n/a
1945 76 39 0.00 n/a
1944 79 45 0.00 n/a
1943 84 46 0.00 n/a
1942 85 53 0.00 n/a
1941 78 52 0.02 n/a
1940 86 53 0.00 n/a
1939 80 46 0.00 n/a
1938 85 45 0.00 n/a
1937 86 50 0.00 n/a
1936 80 43 0.00 n/a
1935 87 45 0.00 n/a
1934 77 49 0.00 n/a
1933 61 37 0.44 n/a
1932 84 53 0.00 n/a
1931 85 56 0.08 n/a
1930 76 45 0.00 n/a
1929 84 46 0.00 n/a
1928 85 47 0.00 n/a
1927 79 48 0.04 n/a
1926 72 46 0.00 n/a
1925 86 49 0.00 n/a
1924 67 44 0.11 n/a
1923 68 54 0.29 n/a
1922 81 54 0.03 n/a
1921 84 53 0.00 n/a
1920 81 43 0.00 n/a
1919 88 51 0.00 n/a
1918 56 45 0.22 n/a
1917 85 47 0.00 n/a
1916 72 38 0.00 n/a
1915 73 48 0.00 n/a
1914 79 45 0.00 n/a
1913 78 54 0.00 n/a
1912 76 44 0.00 n/a
1911 61 42 0.00 n/a
1910 84 51 0.00 n/a
1909 78 51 0.00 n/a
1908 60 50 0.00 n/a
1907 74 38 0.00 n/a
1906 n/a n/a n/a n/a
1905 84 47 0.00 n/a
1904 66 34 0.00 n/a
1903 73 49 0.00 n/a
1902 74 44 0.00 n/a
1901 76 55 0.00 n/a
1900 75 43 0.00 n/a
1899 n/a n/a n/a n/a
1898 91 55 0.00 n/a
1897 88 49 0.00 n/a
1896 n/a 50 0.00 n/a
1895 74 56 0.00 n/a
1894 83 55 0.00 n/a
1893 n/a n/a n/a n/a
1892 n/a n/a n/a n/a
What's the all-time high for Bozeman on 8/21?
For the date of Aug 21, the highest temperature ever reached in Bozeman history is 92 °F which happened in 2009.
Highest Temperatures in Bozeman on August 21
Rank Temperature Year
1 92 °F 2009
2 91 °F 1995
2 91 °F 1898
4 90 °F 1946
4 90 °F 2022
4 90 °F 1960
4 90 °F 2023
8 89 °F 1991
9 88 °F 2019
9 88 °F 1897
9 88 °F 1969
9 88 °F 1949
9 88 °F 2010
9 88 °F 1967
9 88 °F 2005
9 88 °F 1919
What's the all-time low for Bozeman on 8/21?
For the date of Aug 21, the lowest temperature ever reached in Bozeman history is 34 °F which happened in 1904.
Lowest Temperatures in Bozeman on August 21
Rank Temperature Year
1 34 °F 1904
2 37 °F 1933
3 38 °F 1907
3 38 °F 1916
5 39 °F 2000
5 39 °F 1945
5 39 °F 1968
8 40 °F 1966
9 41 °F 1974
9 41 °F 1970
Lowest High Temperatures in Bozeman on August 21
Rank Temperature Year
1 56 °F 1918
2 57 °F 2018
3 59 °F 1954
4 60 °F 1908
5 61 °F 1911
5 61 °F 1933
7 63 °F 1968
8 64 °F 1966
9 65 °F 2021
10 66 °F 1904
What's the most it has ever rained in Bozeman on 8/21?
For the date of Aug 21, the most precipitation ever recorded in Bozeman history is 0.55 inches which happened in 1954.
All-Time Most Precipitation in Bozeman on August 21
Rank Precipitation Year
1 0.55 inches 1954
2 0.44 inches 1933
3 0.41 inches 1986
4 0.35 inches 1993
4 0.35 inches 1968
6 0.29 inches 1923
7 0.22 inches 1918
8 0.19 inches 1983
9 0.17 inches 1981
9 0.17 inches 2018
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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