Casper September 17 Weather Records

Daily averages and all-time records for weather in Casper, Wyoming for the date of September 17.
September 17 All-Time Records
1900–2024
Highest temperature 99 °F 1911
Lowest temperature 19 °F 1965
Lowest daily high 27 °F 1965
Highest daily low 58 °F 1911
Most precipitation 1.20 inches 1923
Most snow 4.4 inches 1965
September 17 Average Weather
1991–2020 1
Average high 75.1 °F
Average low 42.1 °F
Chance precipitation 23.7%
Chance snow 2.2%
Casper September 17 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 83 43 0.00 0.0
2022 74 41 0.00 0.0
2021 83 30 0.00 0.0
2020 78 45 0.00 0.0
2019 82 42 0.00 0.0
2018 88 49 0.00 0.0
2017 70 34 0.00 0.0
2016 75 39 0.00 0.0
2015 72 46 0.00 0.0
2014 85 50 0.00 0.0
2013 84 56 0.00 0.0
2012 70 40 0.01 0.0
2011 66 40 0.09 0.0
2010 87 36 0.00 0.0
2009 83 38 0.00 0.0
2008 83 39 0.00 0.0
2007 76 45 0.02 0.0
2006 53 35 0.00 0.0
2005 78 42 0.00 0.0
2004 86 47 0.00 0.0
2003 54 32 0.75 2.5
2002 74 49 0.27 0.0
2001 68 42 0.30 0.0
2000 89 44 0.00 0.0
1999 82 37 0.00 0.0
1998 88 53 0.00 n/a
1997 81 39 0.00 n/a
1996 61 40 0.00 n/a
1995 87 51 0.01 0.0
1994 81 38 0.00 0.0
1993 69 48 0.22 0.0
1992 84 44 0.00 0.0
1991 53 39 0.01 0.0
1990 75 55 0.00 0.0
1989 85 48 0.00 0.0
1988 82 53 0.00 0.0
1987 60 35 0.00 0.0
1986 75 48 0.00 0.0
1985 79 51 0.00 0.0
1984 86 48 0.00 0.0
1983 84 40 0.00 0.0
1982 63 41 0.00 0.0
1981 81 36 0.00 0.0
1980 82 49 0.00 0.0
1979 83 42 0.00 0.0
1978 55 43 0.16 0.0
1977 72 40 0.00 0.0
1976 85 51 0.00 0.0
1975 77 45 0.03 0.0
1974 75 40 0.00 0.0
1973 67 30 0.00 0.0
1972 82 50 0.00 0.0
1971 45 26 0.01 0.1
1970 78 41 0.00 0.0
1969 77 48 0.00 0.0
1968 65 33 0.00 0.0
1967 65 43 0.60 0.0
1966 75 40 0.00 0.0
1965 27 19 0.42 4.4
1964 82 44 0.00 0.0
1963 81 46 0.01 0.0
1962 81 42 0.00 0.0
1961 80 54 0.00 0.0
1960 63 45 0.12 0.0
1959 52 42 0.10 0.0
1958 83 51 0.00 0.0
1957 76 49 0.02 0.0
1956 83 39 0.00 0.0
1955 74 48 0.18 0.0
1954 82 43 0.00 0.0
1953 70 43 0.04 0.0
1952 81 41 0.00 0.0
1951 80 44 0.00 0.0
1950 76 44 0.00 0.0
1949 64 37 0.00 0.0
1948 85 53 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 81 46 0.00 0.0
1938 77 43 0.00 0.0
1937 n/a n/a n/a n/a
1936 75 33 0.00 0.0
1935 85 43 0.00 0.0
1934 80 42 0.00 0.0
1933 88 38 0.00 0.0
1932 84 42 0.00 0.0
1931 84 53 0.00 n/a
1930 82 40 n/a n/a
1929 80 41 n/a n/a
1928 79 40 n/a n/a
1927 81 52 n/a n/a
1926 81 40 n/a n/a
1925 84 49 n/a n/a
1924 77 48 0.02 n/a
1923 45 37 1.20 n/a
1922 83 45 0.00 n/a
1921 72 29 0.00 n/a
1920 84 49 0.00 n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 68 42 0.11 0.0
1916 69 32 0.00 n/a
1915 72 29 0.00 0.0
1914 83 42 0.00 0.0
1913 n/a n/a n/a n/a
1912 n/a n/a n/a n/a
1911 99 58 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 63 31 0.00 0.0
What's the all-time high for Casper on 9/17?
For the date of Sep 17, the highest temperature ever reached in Casper history is 99 °F which happened in 1911.
Highest Temperatures in Casper on September 17
Rank Temperature Year
1 99 °F 1911
2 89 °F 2000
3 88 °F 1998
3 88 °F 1933
3 88 °F 2018
6 87 °F 1995
6 87 °F 2010
8 86 °F 2004
8 86 °F 1984
10 85 °F 2014
10 85 °F 1935
10 85 °F 1976
10 85 °F 1989
10 85 °F 1948
What's the all-time low for Casper on 9/17?
For the date of Sep 17, the lowest temperature ever reached in Casper history is 19 °F which happened in 1965.
Lowest Temperatures in Casper on September 17
Rank Temperature Year
1 19 °F 1965
2 26 °F 1971
3 29 °F 1921
3 29 °F 1915
5 30 °F 2021
5 30 °F 1973
7 31 °F 1901
8 32 °F 2003
8 32 °F 1916
10 33 °F 1968
10 33 °F 1936
Lowest High Temperatures in Casper on September 17
Rank Temperature Year
1 27 °F 1965
2 45 °F 1923
2 45 °F 1971
4 52 °F 1959
5 53 °F 2006
5 53 °F 1991
7 54 °F 2003
8 55 °F 1978
9 60 °F 1987
10 61 °F 1996
What's the most it has ever rained in Casper on 9/17?
For the date of Sep 17, the most precipitation ever recorded in Casper history is 1.20 inches which happened in 1923.
All-Time Most Precipitation in Casper on September 17
Rank Precipitation Year
1 1.20 inches 1923
2 0.75 inches 2003
3 0.60 inches 1967
4 0.42 inches 1965
5 0.30 inches 2001
6 0.27 inches 2002
7 0.22 inches 1993
8 0.18 inches 1955
9 0.16 inches 1978
10 0.12 inches 1960
All-Time Most Snow in Casper on September 17
Rank Precipitation Year
1 4.4 inches 1965
2 2.5 inches 2003
3 0.1 inches 1971
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy