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Casper August Monthly Average Temperatures

A time series of monthly average August temperatures in Casper, Wyoming from 1901–2023.

Hottest August in Casper History

The hottest August in Casper, Wyoming history occurred in 1983, when the average temperature of 75.1 °F was 5.7 °F higher than normal.

Coldest August in Casper History

The coldest August in Casper, Wyoming history occurred in 1915, when the average temperature of 59.0 °F was 10.4 °F below normal.

Casper Average August Temperature by Year

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Year	Temperature (°F)	to Normal (°F)
2023	68.6	-0.8
2022	71.0	1.6
2021	68.6	-0.8
2020	71.8	2.4
2019	70.1	0.7
2018	68.0	-1.4
2017	67.7	-1.7
2016	67.1	-2.3
2015	68.7	-0.7
2014	68.0	-1.4
2013	72.2	2.8
2012	71.1	1.7
2011	72.1	2.7
2010	70.7	1.3
2009	65.8	-3.6
2008	68.7	-0.7
2007	71.0	1.6
2006	70.1	0.8
2005	66.7	-2.7
2004	64.9	-4.5
2003	72.8	3.4
2002	67.0	-2.4
2001	72.4	3.1
2000	72.8	3.4
1999	70.3	1.0
1998	70.3	0.9
1997	68.8	-0.6
1996	68.3	-1.1
1995	73.0	3.6
1994	73.8	4.4
1993	68.4	-1.0
1992	68.8	-0.6
1991	72.4	3.0
1990	68.9	-0.5
1989	69.4	0.0
1988	70.2	0.8
1987	66.5	-2.9
1986	69.7	0.3
1985	67.1	-2.3
1984	71.5	2.1
1983	75.1	5.7
1982	74.1	4.7
1981	69.6	0.2
1980	66.8	-2.6
1979	68.0	-1.4
1978	67.2	-2.2
1977	66.5	-2.9
1976	68.8	-0.6
1975	68.4	-0.9
1974	64.8	-4.6
1973	71.0	1.6
1972	68.4	-1.0
1971	71.6	2.3
1970	72.6	3.3
1969	72.2	2.8
1968	65.3	-4.1
1967	69.3	-0.1
1966	66.9	-2.4
1965	66.7	-2.7
1964	66.4	-2.9
1963	70.8	1.5
1962	68.1	-1.3
1961	72.5	3.1
1960	67.6	-1.7
1959	70.7	1.3
1958	71.6	2.3
1957	71.5	2.1
1956	67.4	-2.0
1955	73.6	4.2
1954	71.5	2.1
1953	71.2	1.8
1952	70.6	1.3
1951	68.4	-1.0
1950	67.0	-2.4
1949	70.1	0.7
1948	70.7	1.4
1939	69.7	0.3
1938	70.0	0.6
1937	72.1	2.7
1936	71.1	1.7
1935	71.6	2.2
1934	66.8	-2.6
1932	72.8	3.4
1930	67.9	-1.5
1929	74.7	5.3
1928	69.4	0.0
1927	66.5	-2.9
1926	71.4	2.0
1925	70.0	0.6
1924	70.2	0.8
1923	69.1	-0.3
1922	74.2	4.8
1921	70.7	1.3
1920	68.6	-0.8
1917	66.3	-3.0
1916	69.1	-0.3
1915	59.0	-10.4
1914	69.6	0.2
1913	71.1	1.7
1912	74.9	5.5
1911	72.7	3.3
1901	72.1	2.7

Monthly average temperature is the mean of the daily high and low temperatures for the month
"Normal" is based on the average for the years 1991–2020