Average May Temperature in Casper by Year

This page contains a list of the average monthly high and low temperatures in Casper, Wyoming for the month of May each year between 1901 and 2023. It is based on NOAA data.

Change:

Month:

What Was the Hottest May Ever in Casper?

1934 was the warmest May in the history of Casper, Wyoming. The average daily high temperature was 81.6 °F, and the average low was 46.0 °F.

What Was the Coldest May Ever in Casper?

2019 was the coolest May in the history of Casper, Wyoming. The average daily high temperature was 58.7 °F, and the average low was 33.5 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	21	70.3	40.1
2022	95	63.4	33.2
2021	72	66.7	35.9
2020	52	69.9	36.3
2019	102	58.7	33.5
2018	17	70.9	40.5
2017	63	66.4	37.6
2016	84	63.4	36.1
2015	88	61.1	37.2
2014	55	68.4	37.3
2013	36	69.5	39.0
2012	42	70.3	37.4
2011	97	59.7	35.4
2010	100	60.3	32.6
2009	54	69.1	36.7
2008	85	63.4	36.0
2007	37	69.9	38.5
2006	31	71.4	37.4
2005	76	65.8	35.6
2004	49	69.0	37.6
2003	48	69.5	37.1
2002	80	66.1	34.4
2001	26	71.3	38.4
2000	25	69.8	40.1
1999	82	63.8	36.0
1998	32	70.7	38.1
1997	67	67.2	35.9
1996	79	64.0	36.6
1995	93	59.1	37.6
1994	2	78.0	44.0
1993	13	69.3	43.0
1992	12	71.7	40.6
1991	65	64.1	39.6
1990	78	66.0	35.0
1989	41	69.3	38.6
1988	39	69.6	38.7
1987	8	71.4	43.5
1986	75	66.7	35.0
1985	20	71.0	39.6
1984	29	70.3	38.7
1983	92	62.0	34.8
1982	74	64.3	37.8
1981	71	63.4	39.3
1980	66	65.6	37.5
1979	87	62.7	35.8
1978	86	61.1	38.0
1977	24	69.8	40.4
1976	45	68.3	38.9
1975	90	61.4	36.3
1974	70	66.3	36.5
1973	73	65.9	36.3
1972	61	66.1	38.1
1971	81	63.5	36.7
1970	50	67.5	39.1
1969	19	71.8	38.9
1968	96	61.7	34.4
1967	89	61.1	37.1
1966	16	74.1	37.4
1965	83	61.7	38.0
1964	40	67.6	40.6
1963	23	69.3	41.0
1962	30	67.5	41.4
1961	33	67.3	41.4
1960	46	68.7	38.4
1959	77	63.4	37.8
1958	5	73.5	44.5
1957	69	62.2	40.9
1956	14	68.8	43.0
1955	27	69.1	40.4
1954	51	66.7	39.7
1953	91	61.1	36.1
1952	43	66.2	41.2
1951	53	65.3	40.6
1950	101	58.7	33.9
1949	47	66.6	40.1
1939	9	73.1	41.6
1938	60	67.0	37.8
1937	38	69.7	38.7
1936	3	76.6	43.0
1935	98	58.2	35.7
1934	1	81.6	46.0
1933	62	65.3	38.8
1932	18	70.2	41.1
1931	57	67.1	38.4
1930	56	66.1	39.5
1929	64	66.6	37.2
1928	6	71.8	45.3
1927	35	68.4	40.2
1926	11	69.6	44.2
1925	10	71.7	42.4
1924	68	65.5	37.6
1923	28	67.9	41.1
1922	34	66.3	42.3
1921	22	68.7	41.7
1920	58	65.6	39.8
1918	59	68.0	37.3
1917	99	58.6	35.3
1916	94	60.6	36.0
1914	44	66.9	40.4
1912	7	79.2	37.3
1911	15	73.3	38.3
1901	4	75.0	44.2

Weather Station Details

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