Casper September 1 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of September 1.
September 1 All-Time Records
1900–2023
Highest temperature 100 °F 1911
Lowest temperature 32 °F 1965
Lowest daily high 48 °F 1974
Highest daily low 67 °F 1921
Most precipitation 0.62 inches 1973
Most snow none -
September 1 Average Weather
1991–2020 1
Average high 82.5 °F
Average low 48.0 °F
Chance precipitation 19.5%
Chance snow 0.5%
Casper September 1 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 91 46 0.00 0.0
2022 96 48 0.00 0.0
2021 78 60 0.00 0.0
2020 77 42 0.00 0.0
2019 94 49 0.00 0.0
2018 86 42 0.00 0.0
2017 87 53 0.00 0.0
2016 93 47 0.00 0.0
2015 91 58 0.00 0.0
2014 73 40 0.00 0.0
2013 89 48 0.00 0.0
2012 87 61 0.00 0.0
2011 86 52 0.00 0.0
2010 78 49 0.00 0.0
2009 90 46 0.00 0.0
2008 69 38 0.10 0.0
2007 91 63 0.00 0.0
2006 59 39 0.00 0.0
2005 83 34 0.00 0.0
2004 91 56 0.00 0.0
2003 82 45 0.00 0.0
2002 87 48 0.00 0.0
2001 88 57 0.00 0.0
2000 79 55 0.25 0.0
1999 79 53 0.00 0.0
1998 85 43 0.00 n/a
1997 74 58 0.00 n/a
1996 82 46 0.00 n/a
1995 97 46 0.00 0.0
1994 73 47 0.06 0.0
1993 79 52 0.00 0.0
1992 71 52 0.00 0.0
1991 92 51 0.00 0.0
1990 89 50 0.00 0.0
1989 84 46 0.00 0.0
1988 80 45 0.00 0.0
1987 85 50 0.00 0.0
1986 70 50 0.14 0.0
1985 84 44 0.02 0.0
1984 71 45 0.00 0.0
1983 96 58 0.00 0.0
1982 87 45 0.00 0.0
1981 86 40 0.00 0.0
1980 72 38 0.00 0.0
1979 81 43 0.00 0.0
1978 87 56 0.00 0.0
1977 80 47 0.00 0.0
1976 83 45 0.00 0.0
1975 90 41 0.00 0.0
1974 48 41 0.07 0.0
1973 66 48 0.62 0.0
1972 57 42 0.19 0.0
1971 88 59 0.00 0.0
1970 85 56 0.00 0.0
1969 87 45 0.00 0.0
1968 85 42 0.00 0.0
1967 88 50 0.00 0.0
1966 72 50 0.03 0.0
1965 83 32 0.00 0.0
1964 86 60 0.01 0.0
1963 75 52 0.00 0.0
1962 80 39 0.00 0.0
1961 79 49 0.17 0.0
1960 90 57 0.02 0.0
1959 71 42 0.00 0.0
1958 90 46 0.00 0.0
1957 70 47 0.03 0.0
1956 85 43 0.00 0.0
1955 91 59 0.00 0.0
1954 91 58 0.00 0.0
1953 89 57 0.00 0.0
1952 59 38 0.20 0.0
1951 76 42 0.01 0.0
1950 91 55 0.00 0.0
1949 82 37 0.00 0.0
1948 91 50 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 89 57 0.01 0.0
1938 66 55 0.09 0.0
1937 n/a n/a n/a n/a
1936 89 52 0.00 0.0
1935 74 46 0.00 0.0
1934 75 n/a 0.00 0.0
1933 n/a 44 0.00 0.0
1932 80 39 0.00 0.0
1931 74 53 0.00 n/a
1930 68 38 0.04 n/a
1929 94 55 n/a n/a
1928 78 48 n/a n/a
1927 84 58 n/a n/a
1926 77 44 n/a n/a
1925 88 66 n/a n/a
1924 77 40 n/a n/a
1923 80 47 0.03 n/a
1922 81 55 0.00 n/a
1921 88 67 0.00 n/a
1920 69 39 0.00 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 74 41 0.00 0.0
1916 86 48 0.00 n/a
1915 88 46 0.00 0.0
1914 64 45 0.00 0.0
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 100 45 0.04 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 90 49 0.00 0.0
What's the all-time high for Casper on 9/1?
For the date of Sep 1, the highest temperature ever reached in Casper history is 100 °F which happened in 1911.
Highest Temperatures in Casper on September 1
Rank Temperature Year
1 100 °F 1911
2 97 °F 1995
3 96 °F 1983
3 96 °F 2022
5 94 °F 2019
5 94 °F 1929
7 93 °F 2016
8 92 °F 1991
9 91 °F 1948
9 91 °F 1950
9 91 °F 1954
9 91 °F 1955
9 91 °F 2004
9 91 °F 2007
9 91 °F 2015
9 91 °F 2023
What's the all-time low for Casper on 9/1?
For the date of Sep 1, the lowest temperature ever reached in Casper history is 32 °F which happened in 1965.
Lowest Temperatures in Casper on September 1
Rank Temperature Year
1 32 °F 1965
2 34 °F 2005
3 37 °F 1949
4 38 °F 1980
4 38 °F 2008
4 38 °F 1930
4 38 °F 1952
8 39 °F 1932
8 39 °F 1920
8 39 °F 2006
8 39 °F 1962
Lowest High Temperatures in Casper on September 1
Rank Temperature Year
1 48 °F 1974
2 57 °F 1972
3 59 °F 1952
3 59 °F 2006
5 64 °F 1914
6 66 °F 1973
6 66 °F 1938
8 68 °F 1930
9 69 °F 1920
9 69 °F 2008
What's the most it has ever rained in Casper on 9/1?
For the date of Sep 1, the most precipitation ever recorded in Casper history is 0.62 inches which happened in 1973.
All-Time Most Precipitation in Casper on September 1
Rank Precipitation Year
1 0.62 inches 1973
2 0.25 inches 2000
3 0.20 inches 1952
4 0.19 inches 1972
5 0.17 inches 1961
6 0.14 inches 1986
7 0.10 inches 2008
8 0.09 inches 1938
9 0.07 inches 1974
10 0.06 inches 1994
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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