Rapid City Downtown, SD: May

31 May 2026: May 2026 averaged 59.7°F in Rapid City Downtown, SD, the warmest May since 2023, tied 12th warmest of 115 (with 1897).

May 2026

Mean temperature: 59.7°F; Warmest since 2023; 12th warmest of 115
Precipitation: 3.07 in; Wettest since 2023; 53rd wettest of 115

The mean temperature of every May in Rapid City Downtown, SD since 1888: 59.7°F in 2026; the highest is 66.6°F, in 1934.

Every year, ranked, as a table

Every May in Rapid City Downtown, SD from 1888 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	59.7	12	71.8	12	47.6	17	3.07	53	0
2025	57.4	31	67.8	35	46.9	21	2.63	63	0
2024	56.2	44	66.3	54	46.1	33	2.33	72	0
2023	61.2	6	72.9	9	49.6	6	5.41	23	0
2022	55.4	51	66	56	44.8	47	1.99	85	0
2021	54	70	64.2	71	43.9	61	2.49	68	0
2020	54.5	64	64.3	68	44.6	48	2.54	65	0
2019	48.4	113	57	113	39.7	110	8.73	3	0
2018	60.5	9	70.7	16	50.3	3	5.49	21	0
2017	56.5	43	67.1	47	45.9	35	1.41	100	0
2016	56.2	44	67	49	45.5	41	1.52	98	0
2015	51.7	94	60.3	104	43.1	77	7.76	10	0
2014	55.2	54	64.6	66	45.9	35	1.86	87	0
2013	57.3	33	67.9	34	46.6	26	4.25	34	0
2012	56.9	38	68.3	32	45.5	41	2.18	77	0
2011	50.6	105	58.9	109	42.4	84	8.24	4	0
2010	51.5	97	61.5	98	41.5	94	5.56	19	0
2009	55.7	48	67.6	42	43.9	61	2.58	64	0
2008	51.3	100	60.4	103	42.2	85	9.71	1	0
2007	58.4	20	68.9	28	47.9	15	4.13	38	0
2006	57.7	27	68.6	30	46.7	24	3.04	54	0
2005	53.5	75	63.6	76	43.3	74	4.59	30	0
2004	55.1	56	66.5	52	43.7	66	3.51	42	0
2003	54.6	61	65	64	44.1	57	1.55	96	0
2002	51.5	97	62.3	93	40.7	102	2.11	81	0
2001	57.3	33	67.5	44	47.2	19	2.04	82	0
2000	56.9	38	67.3	45	46.5	27	3.23	51	1
1999	53.8	72	63.4	78	44.3	52	2.01	83	0
1998	57.1	36	67.8	35	46.4	29	2.13	80	0
1997	53.1	78	63	83	43.3	74	6.39	16	0
1996	49.9	109	57.9	111	42	89	8.12	6	0
1971	54.6	61	65.1	63	44	58	3.66	41	0
1970	57.7	27	69.3	26	46.1	33	3.32	46	0
1969	60	10	73.4	6	46.5	27	2.00	84	0
1968	52.5	85	62.8	85	42.2	85	1.78	91	0
1967	51.3	100	61.7	97	40.6	103	4.33	33	1
1966	58.6	18	72.7	10	44.4	51	0.46	112	0
1965	56.1	46	67.1	47	45.1	45	7.30	11	0
1964	59.5	14	69.8	21	49.1	7	3.04	54	0
1963	57.6	30	69.4	25	45.9	35	2.37	71	0
1962	58	21	67.8	35	48.1	14	9.21	2	0
1961	56.6	42	67.8	35	45.5	41	1.47	99	0
1960	56.9	38	69.5	24	44.2	53	1.85	88	0
1959	54.2	67	65.6	60	42.7	79	2.89	58	1
1958	62.3	4	74.7	2	49.8	5	1.07	103	0
1957	54.3	66	62.8	85	45.7	39	7.98	9	0
1956	57.7	27	67.7	41	47.7	16	3.40	45	0
1955	59.5	14	71.6	13	47.5	18	1.55	96	0
1954	54.8	59	65.5	61	44	58	2.29	73	0
1953	52.9	82	63.2	80	42.5	82	1.58	95	0
1952	57.3	33	68.5	31	46.2	32	4.35	32	0
1951	57	37	68.2	33	45.7	39	2.89	58	0
1950	51.6	96	62	95	41.2	99	2.14	79	0
1949	58	21	69.8	21	46.3	30	2.21	75	0
1948	55.2	54	65.9	57	44.5	49	2.15	78	0
1947	54.9	58	65.7	59	44	58	1.16	102	0
1946	51.9	92	61.3	101	42.5	82	6.77	12	0
1945	51.7	94	62.5	91	40.8	101	3.12	52	0
1944	59.1	17	69.6	23	48.6	10	3.31	47	0
1943	52.5	85	63.4	78	41.7	91	2.38	70	0
1942	51	102	60.5	102	41.5	94	4.78	26	0
1941	61	7	73.3	7	48.8	8	1.34	101	0
1940	57.9	24	70.8	15	45	46	0.42	114	0
1939	62.5	2	74.4	5	50.6	2	1.04	105	0
1938	54.1	68	63.8	74	44.5	49	3.24	49	0
1937	58	21	68.8	29	47.2	19	2.80	60	0
1936	62.5	2	74.6	3	50.3	3	0.09	115	0
1935	48.5	112	56.9	114	40.1	107	6.69	14	0
1934	66.6	1	80.6	1	52.5	1	0.44	113	0
1933	53	80	62.3	93	43.6	69	6.51	15	0
1932	57.4	31	67.8	35	46.9	21	5.02	25	0
1931	54.7	60	67.8	35	41.7	91	1.06	104	1
1930	52.6	83	63.1	82	42.2	85	0.92	106	0
1929	52.1	89	63.6	76	40.6	103	4.21	36	0
1928	59.9	11	71.2	14	48.5	11	1.94	86	0
1927	50.9	103	59.8	106	42	89	5.53	20	0
1926	59.2	16	70.2	18	48.2	13	8.07	8	0
1925	55.5	50	67.2	46	43.9	61	4.18	37	0
1924	50.7	104	62.7	89	38.7	114	0.53	109	0
1923	54.5	64	65.5	61	43.5	72	4.25	34	0
1922	56	47	66.2	55	45.8	38	3.73	40	0
1921	53.5	75	63.2	80	43.7	66	2.50	67	0
1920	52.3	87	61.4	99	43.1	77	8.15	5	0
1919	55.6	49	67.6	42	43.6	69	1.82	89	0
1918	55.4	51	66.9	50	43.9	61	4.10	39	0
1917	48.6	111	58	110	39.1	113	4.65	29	0
1916	52	91	62.8	85	41.2	99	4.75	27	0
1915	50.2	107	59	108	41.5	94	3.41	44	0
1914	55.4	51	66.6	51	44.2	53	1.61	94	0
1913	52.6	83	62.6	90	42.6	81	3.24	49	0
1912	54.6	61	65	64	44.2	53	2.25	74	0
1911	56.9	38	69.9	20	43.9	61	0.50	111	0
1910	52.2	88	62.9	84	41.5	94	2.76	61	0
1909	51.5	97	62.5	91	40.5	105	5.13	24	0
1908	50.6	105	61.4	99	39.7	110	5.46	22	0
1907	47.3	114	57.3	112	37.4	115	8.09	7	0
1906	53.1	78	64.1	72	42.1	88	4.67	28	0
1905	49.5	110	59.3	107	39.8	108	6.25	17	0
1904	53.9	71	64.3	68	43.4	73	3.50	43	0
1903	53.7	73	64.3	68	43.2	76	2.94	57	0
1902	57.9	24	69.1	27	46.7	24	2.97	56	0
1901	60.8	8	73.2	8	48.5	11	2.53	66	0
1900	61.7	5	74.6	3	48.7	9	0.53	109	0
1899	53.3	77	63.8	74	42.7	79	6.76	13	0
1898	53	80	61.9	96	44.2	53	3.26	48	0
1897	59.7	12	72.6	11	46.9	21	1.82	89	0
1896	57.8	26	70.1	19	45.5	41	0.60	108	0
1895	54.1	68	64.6	66	43.7	66	2.66	62	0
1894	58.5	19	70.7	16	46.3	30	0.72	107	0
1893	51.9	92	64	73	39.8	108	1.73	92	0
1892	47.3	114	55.1	115	39.4	112	4.49	31	0
1891	55	57	66.4	53	43.6	69	1.72	93	0
1890	53.7	73	65.8	58	41.6	93	2.46	69	0
1889	52.1	89	62.8	85	41.5	94	2.19	76	0
1888	50.1	108	59.9	105	40.4	106	6.01	18	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	66.6
1939	62.5
1936	62.5
1958	62.3
1900	61.7
2023	61.2
1941	61
1901	60.8
2018	60.5
1969	60

Coldest
Year	Mean, °F
1907	47.3
1892	47.3
2019	48.4
1935	48.5
1917	48.6
1905	49.5
1996	49.9
1888	50.1
1915	50.2
2011	50.6
More years share the last value

Wettest
Year	Precipitation, in
2008	9.71
1962	9.21
2019	8.73
2011	8.24
1920	8.15
1996	8.12
1907	8.09
1926	8.07
1957	7.98
2015	7.76

Driest
Year	Precipitation, in
1936	0.09
1940	0.42
1934	0.44
1966	0.46
1911	0.50
1924	0.53
1900	0.53
1896	0.60
1894	0.72
1930	0.92

The hottest, coldest and wettest days

Hottest day: 91°F; 26 May 2026, 13 May 2026, 11 May 2026
Coldest night: 31°F; 6 May 2026
Wettest day: 1.83 in; 30 May 2026

Every month, season and year

Months

Seasons

Years

Rapid City Downtown, SD the day's answers

All-time records

Every answer in words

May 2026 brought 3.07 in of precipitation in Rapid City Downtown, SD, the wettest May since 2023, 53rd wettest of 115.
The hottest day of May 2026 in Rapid City Downtown, SD: 91°F on Tuesday 26 May 2026, Wednesday 13 May 2026 and Monday 11 May 2026.
The coldest night of May 2026 in Rapid City Downtown, SD: a low of 31°F on Wednesday 6 May 2026.
The wettest day of May 2026 in Rapid City Downtown, SD: 1.83 in on Saturday 30 May 2026.