Casper September 11 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of September 11.
September 11 All-Time Records
1900–2023
Highest temperature 100 °F 1911
Lowest temperature 26 °F 2014
Lowest daily high 41 °F 2014
Highest daily low 64 °F 1935
Most precipitation 0.63 inches 1973
Most snow 3.0 inches 1974
September 11 Average Weather
1991–2020 1
Average high 77.7 °F
Average low 44.2 °F
Chance precipitation 21.8%
Chance snow 1.5%
Casper September 11 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 75 38 0.00 0.0
2022 83 36 0.00 0.0
2021 87 55 0.00 0.0
2020 55 44 0.07 0.0
2019 65 43 0.25 0.0
2018 84 50 0.00 0.0
2017 89 52 0.00 0.0
2016 86 48 0.00 0.0
2015 79 39 0.00 0.0
2014 41 26 0.15 1.0
2013 65 51 0.05 0.0
2012 79 50 0.00 0.0
2011 84 41 0.00 0.0
2010 77 40 0.00 0.0
2009 73 42 0.00 0.0
2008 57 45 0.01 0.0
2007 82 32 0.00 0.0
2006 75 41 0.01 0.0
2005 79 41 0.00 0.0
2004 87 38 0.00 0.0
2003 67 42 0.00 0.0
2002 75 38 0.00 0.0
2001 84 47 0.00 0.0
2000 73 38 0.00 0.0
1999 66 42 0.01 0.0
1998 82 54 0.09 n/a
1997 85 53 0.00 n/a
1996 79 47 0.00 n/a
1995 73 44 0.00 0.0
1994 87 51 0.00 0.0
1993 91 54 0.00 0.0
1992 86 47 0.00 0.0
1991 76 52 0.00 0.0
1990 89 46 0.00 0.0
1989 52 27 0.00 0.0
1988 56 38 0.08 0.0
1987 66 43 0.00 0.0
1986 72 42 0.00 0.0
1985 77 43 0.01 0.0
1984 67 37 0.06 0.0
1983 82 50 0.00 0.0
1982 48 40 0.33 0.0
1981 86 44 0.00 0.0
1980 75 53 0.04 0.0
1979 72 37 0.13 0.0
1978 65 42 0.02 0.0
1977 84 45 0.01 0.0
1976 82 47 0.00 0.0
1975 58 41 0.01 0.0
1974 46 33 0.41 3.0
1973 57 50 0.63 0.0
1972 74 40 0.02 0.0
1971 90 47 0.00 0.0
1970 81 35 0.00 0.0
1969 83 45 0.02 0.0
1968 88 46 0.00 0.0
1967 82 52 0.04 0.0
1966 86 56 0.00 0.0
1965 80 41 0.00 0.0
1964 75 37 0.00 0.0
1963 83 52 0.00 0.0
1962 84 49 0.00 0.0
1961 71 37 0.06 0.0
1960 75 48 0.00 0.0
1959 89 45 0.00 0.0
1958 85 52 0.00 0.0
1957 68 36 0.00 0.0
1956 81 55 0.02 0.0
1955 80 43 0.00 0.0
1954 89 56 0.00 0.0
1953 84 47 0.00 0.0
1952 87 56 0.05 0.0
1951 66 35 0.15 0.0
1950 47 34 0.14 0.0
1949 73 34 0.00 0.0
1948 86 41 0.00 0.0
1947 n/a n/a n/a n/a
1946 n/a n/a n/a n/a
1945 n/a n/a n/a n/a
1944 n/a n/a n/a n/a
1943 n/a n/a n/a n/a
1942 n/a n/a n/a n/a
1941 n/a n/a n/a n/a
1940 n/a n/a 0.00 n/a
1939 80 59 0.00 0.0
1938 53 35 0.05 0.0
1937 n/a n/a n/a n/a
1936 86 43 0.00 0.0
1935 87 64 0.00 0.0
1934 90 n/a 0.00 0.0
1933 n/a 56 0.00 0.0
1932 80 40 0.00 0.0
1931 87 58 0.00 n/a
1930 80 54 n/a n/a
1929 71 36 n/a n/a
1928 76 43 0.00 n/a
1927 85 55 n/a n/a
1926 81 45 0.06 n/a
1925 77 46 n/a n/a
1924 58 41 0.60 n/a
1923 74 43 n/a n/a
1922 77 43 0.00 n/a
1921 69 30 0.00 n/a
1920 75 48 0.00 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 79 56 0.00 0.0
1916 58 30 0.00 n/a
1915 64 34 0.00 0.0
1914 82 37 0.00 0.0
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 100 40 n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a n/a n/a
1906 n/a n/a n/a n/a
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 68 39 0.00 0.0
What's the all-time high for Casper on 9/11?
For the date of Sep 11, the highest temperature ever reached in Casper history is 100 °F which happened in 1911.
Highest Temperatures in Casper on September 11
Rank Temperature Year
1 100 °F 1911
2 91 °F 1993
3 90 °F 1971
3 90 °F 1934
5 89 °F 1954
5 89 °F 1990
5 89 °F 2017
5 89 °F 1959
9 88 °F 1968
10 87 °F 2021
10 87 °F 1952
10 87 °F 1931
10 87 °F 1994
10 87 °F 2004
10 87 °F 1935
What's the all-time low for Casper on 9/11?
For the date of Sep 11, the lowest temperature ever reached in Casper history is 26 °F which happened in 2014.
Lowest Temperatures in Casper on September 11
Rank Temperature Year
1 26 °F 2014
2 27 °F 1989
3 30 °F 1921
3 30 °F 1916
5 32 °F 2007
6 33 °F 1974
7 34 °F 1950
7 34 °F 1949
7 34 °F 1915
10 35 °F 1951
10 35 °F 1938
10 35 °F 1970
Lowest High Temperatures in Casper on September 11
Rank Temperature Year
1 41 °F 2014
2 46 °F 1974
3 47 °F 1950
4 48 °F 1982
5 52 °F 1989
6 53 °F 1938
7 55 °F 2020
8 56 °F 1988
9 57 °F 1973
9 57 °F 2008
What's the most it has ever rained in Casper on 9/11?
For the date of Sep 11, the most precipitation ever recorded in Casper history is 0.63 inches which happened in 1973.
All-Time Most Precipitation in Casper on September 11
Rank Precipitation Year
1 0.63 inches 1973
2 0.60 inches 1924
3 0.41 inches 1974
4 0.33 inches 1982
5 0.25 inches 2019
6 0.15 inches 1951
6 0.15 inches 2014
8 0.14 inches 1950
9 0.13 inches 1979
10 0.09 inches 1998
All-Time Most Snow in Casper on September 11
Rank Precipitation Year
1 3.0 inches 1974
2 1.0 inches 2014
Weather Station Details
Years Station Coordinates
1949–2023 Casper-Natrona County International Airport location
1900–1948 Casper 2 E location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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