Helena September 12 Weather Records

Daily averages and all-time records for weather in Helena, Montana for the date of September 12.
September 12 All-Time Records
1893–2024
Highest temperature 91 °F 2015
Lowest temperature 22 °F 1949
Lowest daily high 37 °F 1921
Highest daily low 57 °F 1969
Most precipitation 0.75 inches 1914
Most snow 2.4 inches 1896
September 12 Average Weather
1991–2020 1
Average high 74.7 °F
Average low 45.1 °F
Chance precipitation 19.5%
Chance snow 0%
Helena September 12 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 87 53 0.00 0.0
2022 84 51 0.00 0.0
2021 81 45 0.00 0.0
2020 90 50 0.00 0.0
2019 73 42 0.00 0.0
2018 68 47 0.00 0.0
2017 90 49 0.00 0.0
2016 51 40 0.00 0.0
2015 91 47 0.00 0.0
2014 n/a n/a n/a n/a
2013 87 54 0.00 0.0
2012 69 41 0.00 0.0
2011 83 49 0.00 0.0
2010 76 42 0.00 0.0
2009 81 43 0.00 0.0
2008 80 41 0.00 0.0
2007 69 44 0.00 0.0
2006 87 48 0.00 0.0
2005 65 33 0.00 0.0
2004 62 50 0.30 0.0
2003 59 45 0.09 n/a
2002 85 47 0.00 n/a
2001 73 48 0.00 n/a
2000 84 43 0.00 n/a
1999 65 28 0.00 n/a
1998 76 50 0.00 n/a
1997 71 46 0.02 n/a
1996 83 54 0.00 n/a
1995 83 47 0.00 0.0
1994 75 48 0.00 0.0
1993 59 38 0.52 0.0
1992 62 42 0.03 0.0
1991 75 44 0.00 0.0
1990 91 49 0.00 0.0
1989 66 28 0.00 0.0
1988 56 33 0.00 0.0
1987 85 43 0.00 0.0
1986 51 37 0.24 0.0
1985 57 47 0.33 0.0
1984 66 42 0.00 0.0
1983 70 45 0.00 0.0
1982 51 42 0.34 0.0
1981 90 44 0.00 0.0
1980 72 49 0.00 0.0
1979 68 42 0.00 0.0
1978 48 41 0.21 0.0
1977 78 39 0.00 0.0
1976 67 43 0.00 0.0
1975 70 35 0.00 0.0
1974 52 35 0.00 0.0
1973 80 49 0.00 0.0
1972 59 41 0.00 0.0
1971 79 34 0.00 0.0
1970 38 29 0.00 0.0
1969 82 57 0.00 0.0
1968 73 47 0.05 0.0
1967 56 41 0.14 0.0
1966 70 54 0.04 0.0
1965 54 36 0.15 0.0
1964 74 31 0.00 0.0
1963 82 47 0.01 0.0
1962 64 37 0.00 0.0
1961 54 37 0.00 0.0
1960 82 43 0.00 0.0
1959 86 46 0.00 0.0
1958 75 50 0.03 0.0
1957 63 49 0.05 0.0
1956 72 48 0.00 0.0
1955 78 49 0.00 0.0
1954 78 46 0.00 0.0
1953 91 42 0.00 0.0
1952 60 47 0.04 0.0
1951 60 38 0.00 0.0
1950 55 34 0.00 0.0
1949 56 22 0.00 0.0
1948 84 45 0.00 0.0
1947 84 39 0.00 0.0
1946 82 46 0.00 0.0
1945 74 30 0.00 0.0
1944 84 46 0.00 0.0
1943 87 42 0.00 0.0
1942 64 38 0.00 0.0
1941 61 41 0.02 0.0
1940 82 51 0.02 0.0
1939 56 43 0.00 n/a
1938 76 44 0.00 0.0
1937 80 53 0.00 0.0
1936 81 41 0.00 0.0
1935 82 46 0.00 0.0
1934 78 47 0.00 0.0
1933 75 45 0.00 0.0
1932 69 44 0.00 0.0
1931 62 47 0.01 0.0
1930 63 47 0.02 0.0
1929 77 45 0.00 0.0
1928 62 44 0.00 0.0
1927 67 41 0.00 0.0
1926 59 43 0.23 0.0
1925 61 44 0.00 0.0
1924 72 42 0.00 0.0
1923 77 40 0.00 0.0
1922 82 49 0.00 0.0
1921 37 30 0.00 0.3
1920 80 48 0.04 0.0
1919 67 51 0.00 0.0
1918 80 49 0.00 0.0
1917 76 44 0.00 0.0
1916 74 45 0.00 0.0
1915 45 31 0.13 0.0
1914 44 35 0.75 0.0
1913 85 45 0.00 0.0
1912 71 43 0.00 0.0
1911 78 50 0.00 0.0
1910 48 37 0.00 0.0
1909 57 43 0.07 0.0
1908 78 56 0.07 0.0
1907 47 35 0.06 0.0
1906 58 31 0.00 0.0
1905 72 44 0.00 0.0
1904 63 40 0.00 0.0
1903 44 37 0.00 0.0
1902 71 37 0.00 0.0
1901 59 39 0.00 0.0
1900 66 50 0.00 0.0
1899 82 52 0.00 0.0
1898 74 46 0.00 0.0
1897 64 48 0.05 0.0
1896 38 32 0.34 2.4
1895 78 47 0.00 0.0
1894 65 43 0.00 0.0
1893 63 48 0.05 0.0
What's the all-time high for Helena on 9/12?
For the date of Sep 12, the highest temperature ever reached in Helena history is 91 °F which has happened 3 times, most recently in 2015.
Highest Temperatures in Helena on September 12
Rank Temperature Year
1 91 °F 1953
1 91 °F 1990
1 91 °F 2015
4 90 °F 2017
4 90 °F 1981
4 90 °F 2020
7 87 °F 2013
7 87 °F 1943
7 87 °F 2006
7 87 °F 2023
What's the all-time low for Helena on 9/12?
For the date of Sep 12, the lowest temperature ever reached in Helena history is 22 °F which happened in 1949.
Lowest Temperatures in Helena on September 12
Rank Temperature Year
1 22 °F 1949
2 28 °F 1989
2 28 °F 1999
4 29 °F 1970
5 30 °F 1945
5 30 °F 1921
7 31 °F 1915
7 31 °F 1906
7 31 °F 1964
10 32 °F 1896
Lowest High Temperatures in Helena on September 12
Rank Temperature Year
1 37 °F 1921
2 38 °F 1970
2 38 °F 1896
4 44 °F 1914
4 44 °F 1903
6 45 °F 1915
7 47 °F 1907
8 48 °F 1910
8 48 °F 1978
10 51 °F 1986
10 51 °F 1982
10 51 °F 2016
What's the most it has ever rained in Helena on 9/12?
For the date of Sep 12, the most precipitation ever recorded in Helena history is 0.75 inches which happened in 1914.
All-Time Most Precipitation in Helena on September 12
Rank Precipitation Year
1 0.75 inches 1914
2 0.52 inches 1993
3 0.34 inches 1896
3 0.34 inches 1982
5 0.33 inches 1985
6 0.30 inches 2004
7 0.24 inches 1986
8 0.23 inches 1926
9 0.21 inches 1978
10 0.15 inches 1965
All-Time Most Snow in Helena on September 12
Rank Precipitation Year
1 2.4 inches 1896
2 0.3 inches 1921
Weather Station Details
Years Station Coordinates
1939–2024 Helena Regional Airport location
1893–1938 Helna location