Number of Days of 100 °F in Casper by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in Casper, Wyoming, between 1900 and 2024.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 1912 holds the record for the most 100 °F days in Casper history. There were 46 days with a high temperature of at least 100 degrees that year.

How many so far this year (2024)?

It has not reached 100 degrees Fahrenheit in Casper so far in 2024. As of April 23, the highest temperature this year is 75 °F.

The last time it reached at least 100° F was July 17, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 100 °F
2024	46	0
2023	25	1
2022	15	2
2021	15	2
2020	25	1
2019	46	0
2018	8	3
2017	46	0
2016	25	1
2015	46	0
2014	25	1
2013	46	0
2012	8	3
2011	46	0
2010	46	0
2009	46	0
2008	46	0
2007	15	2
2006	3	8
2005	8	3
2004	46	0
2003	8	3
2002	15	2
2001	25	1
2000	15	2
1999	46	0
1998	15	2
1997	46	0
1996	46	0
1995	15	2
1994	15	2
1993	46	0
1992	46	0
1991	46	0
1990	6	4
1989	8	3
1988	8	3
1987	46	0
1986	46	0
1985	46	0
1984	46	0
1983	25	1
1982	25	1
1981	25	1
1980	46	0
1979	25	1
1978	46	0
1977	46	0
1976	46	0
1975	46	0
1974	46	0
1973	46	0
1972	46	0
1971	46	0
1970	25	1
1969	46	0
1968	46	0
1967	46	0
1966	46	0
1965	46	0
1964	46	0
1963	46	0
1962	46	0
1961	46	0
1960	46	0
1959	25	1
1958	46	0
1957	46	0
1956	46	0
1955	46	0
1954	5	5
1953	25	1
1952	46	0
1951	46	0
1950	46	0
1949	46	0
1948	46	0
1947	46	0
1946	46	0
1945	46	0
1944	46	0
1943	46	0
1942	46	0
1941	46	0
1940	46	0
1939	6	4
1938	15	2
1937	25	1
1936	25	1
1935	8	3
1934	25	1
1933	25	1
1932	25	1
1931	25	1
1930	25	1
1929	25	1
1928	46	0
1927	46	0
1926	46	0
1925	15	2
1924	46	0
1923	46	0
1922	46	0
1921	46	0
1920	46	0
1919	46	0
1918	46	0
1917	46	0
1916	25	1
1915	46	0
1914	46	0
1913	46	0
1912	1	46
1911	2	31
1910	46	0
1909	46	0
1908	46	0
1907	46	0
1906	46	0
1905	46	0
1904	46	0
1903	46	0
1902	46	0
1901	4	7
1900	46	0

Weather Station Details

Years	Station	Coordinates
1949–2024	Casper-Natrona County International Airport	location
1900–1948	Casper 2 E	location