Casper September 23 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of September 23.
September 23 All-Time Records
1900–2024
Highest temperature 90 °F 1992
Lowest temperature 24 °F 2000
Lowest daily high 29 °F 2000
Highest daily low 61 °F 1924
Most precipitation 0.29 inches 2000
Most snow 4.5 inches 2000
September 23 Average Weather
1991–2020 1
Average high 71.6 °F
Average low 39.6 °F
Chance precipitation 26.3%
Chance snow 4.6%
Casper September 23 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 67 39 0.00 0.0
2022 75 42 0.00 0.0
2021 75 38 0.00 0.0
2020 80 49 0.00 0.0
2019 78 38 0.00 0.0
2018 84 47 0.00 0.0
2017 44 37 0.10 0.0
2016 66 46 0.10 0.0
2015 87 50 0.00 0.0
2014 80 46 0.00 0.0
2013 70 39 0.00 0.0
2012 84 34 0.00 0.0
2011 86 45 0.00 0.0
2010 69 43 0.07 0.0
2009 69 33 0.00 0.0
2008 69 35 0.00 0.0
2007 66 47 0.04 0.0
2006 47 37 0.27 0.0
2005 79 48 0.01 0.0
2004 67 32 0.00 0.0
2003 78 44 0.00 0.0
2002 67 30 0.00 0.0
2001 76 34 0.00 0.0
2000 29 24 0.29 4.5
1999 80 39 0.00 0.0
1998 69 49 0.01 n/a
1997 53 37 0.09 n/a
1996 59 29 0.00 n/a
1995 53 34 0.07 0.0
1994 78 42 0.00 0.0
1993 71 41 0.00 0.0
1992 90 55 0.00 0.0
1991 59 32 0.00 0.0
1990 80 34 0.00 0.0
1989 75 37 0.00 0.0
1988 74 42 0.00 0.0
1987 86 41 0.00 0.0
1986 72 39 0.00 0.0
1985 45 27 0.00 0.0
1984 43 25 0.02 0.2
1983 83 35 0.00 0.0
1982 73 45 0.00 0.0
1981 73 40 0.00 0.0
1980 64 36 0.00 0.0
1979 86 44 0.00 0.0
1978 80 45 0.00 0.0
1977 59 40 0.12 0.0
1976 69 47 0.00 0.0
1975 75 36 0.00 0.0
1974 79 36 0.00 0.0
1973 79 46 0.00 0.0
1972 72 35 0.00 0.0
1971 70 31 0.00 0.0
1970 73 44 0.00 0.0
1969 77 41 0.00 0.0
1968 66 35 0.00 0.0
1967 72 44 0.00 0.0
1966 87 47 0.00 0.0
1965 45 28 0.00 0.0
1964 63 32 0.00 0.0
1963 79 50 0.00 0.0
1962 74 47 0.00 0.0
1961 52 32 0.29 0.7
1960 64 39 0.00 0.0
1959 47 38 0.12 0.0
1958 83 47 0.00 0.0
1957 79 40 0.00 0.0
1956 73 30 0.00 0.0
1955 55 35 0.00 0.0
1954 73 54 0.00 0.0
1953 75 49 0.00 0.0
1952 78 42 0.00 0.0
1951 50 34 0.02 0.0
1950 68 43 0.00 0.0
1949 86 35 0.00 0.0
1948 83 60 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 0.02 n/a
1939 73 44 0.00 0.0
1938 87 52 0.00 0.0
1937 n/a n/a n/a n/a
1936 66 43 0.00 0.0
1935 84 53 0.00 0.0
1934 77 31 0.15 0.0
1933 74 35 0.00 0.0
1932 75 38 0.00 0.0
1931 59 39 0.15 n/a
1930 60 52 n/a n/a
1929 73 48 n/a n/a
1928 71 35 n/a n/a
1927 77 37 0.03 n/a
1926 72 29 n/a n/a
1925 69 40 n/a n/a
1924 79 61 n/a n/a
1923 79 56 0.00 n/a
1922 83 41 0.00 n/a
1921 83 48 0.00 n/a
1920 67 45 0.02 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 78 51 0.02 0.0
1916 73 38 0.00 n/a
1915 80 39 0.00 0.0
1914 74 29 0.00 0.0
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 87 32 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 81 30 0.00 0.0
What's the all-time high for Casper on 9/23?
For the date of Sep 23, the highest temperature ever reached in Casper history is 90 °F which happened in 1992.
Highest Temperatures in Casper on September 23
Rank Temperature Year
1 90 °F 1992
2 87 °F 1911
2 87 °F 2015
2 87 °F 1938
2 87 °F 1966
6 86 °F 2011
6 86 °F 1987
6 86 °F 1979
6 86 °F 1949
10 84 °F 2012
10 84 °F 2018
10 84 °F 1935
What's the all-time low for Casper on 9/23?
For the date of Sep 23, the lowest temperature ever reached in Casper history is 24 °F which happened in 2000.
Lowest Temperatures in Casper on September 23
Rank Temperature Year
1 24 °F 2000
2 25 °F 1984
3 27 °F 1985
4 28 °F 1965
5 29 °F 1926
5 29 °F 1914
5 29 °F 1996
8 30 °F 1956
8 30 °F 2002
8 30 °F 1901
Lowest High Temperatures in Casper on September 23
Rank Temperature Year
1 29 °F 2000
2 43 °F 1984
3 44 °F 2017
4 45 °F 1985
4 45 °F 1965
6 47 °F 2006
6 47 °F 1959
8 50 °F 1951
9 52 °F 1961
10 53 °F 1997
10 53 °F 1995
What's the most it has ever rained in Casper on 9/23?
For the date of Sep 23, the most precipitation ever recorded in Casper history is 0.29 inches which has happened 2 times, most recently in 2000.
All-Time Most Precipitation in Casper on September 23
Rank Precipitation Year
1 0.29 inches 2000
1 0.29 inches 1961
3 0.27 inches 2006
4 0.15 inches 1931
4 0.15 inches 1934
6 0.12 inches 1977
6 0.12 inches 1959
8 0.10 inches 2016
8 0.10 inches 2017
10 0.09 inches 1997
All-Time Most Snow in Casper on September 23
Rank Precipitation Year
1 4.5 inches 2000
2 0.7 inches 1961
3 0.2 inches 1984
Weather Station Details
Years Station Coordinates
1949–2024 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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