Sisseton, SD: May

31 May 2026: May 2026 averaged 57.3°F in Sisseton, SD, the coldest May since 2020, tied 40th coldest of 91 (with 1940 and 1937).

May 2026

Mean temperature: 57.3°F; Coldest since 2020; 40th coldest of 91
Precipitation: 1.94 in; Driest since 2023; 38th driest of 94

A normal May in Sisseton, SD (1991 to 2020): a mean temperature of 56.6°F, between 53.5°F and 61.2°F in eight years of ten and 3.19 in of precipitation, between 1.24 in and 4.52 in in eight years of ten.

The mean temperature of every May in Sisseton, SD since 1933: 57.3°F in 2026; the lowest is 50.7°F, in 1945.

Normal range, 53.5 to 61.2°F

Every year, ranked, as a table

Every May in Sisseton, SD from 1932 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	57.3	50	71.2	36	43.4	66	1.94	57	0
2025	58.4	31	71.3	33	45.5	40	3.11	40	0
2024	57.7	44	69.1	55	46.4	32	5.69	6	0
2023	65.6	2	80.2	2	51.1	4	1.00	85	0
2022	58.3	34	68.8	58	47.8	22	3.77	24	0
2021	58.1	37	71.4	31	44.8	48	1.32	76	0
2020	54.5	73	65.1	81	43.8	63	1.75	64	0
2019	52.7	84	63.4	88	42	81	4.11	16	0
2018	65.2	4	78.7	3	51.7	3	1.80	63	0
2017	57.6	46	70.5	40	44.6	54	1.14	81	0
2016	59.5	23	73.3	19	45.7	37	0.87	89	0
2015	54.8	69	66.3	75	43.4	66	5.19	9	0
2014	56.7	56	68.6	59	44.8	48	3.73	26	0
2013	55.4	63	66.2	76	44.6	54	3.72	27	0
2012	60.6	18	72.2	24	49	16	1.47	71	0
2011	53.9	78	64.3	84	43.6	65	3.35	34	0
2010	56.7	56	67.4	66	45.9	36	2.13	53	0
2009	56.1	60	69.9	47	42.4	75	1.02	84	0
2008	55	67	67.7	64	42.4	75	1.37	73	0
2007	61.2	15	72.6	22	49.9	12	3.53	32	0
2006	58.5	30	69.4	50	47.6	24	1.74	66	0
2005	55.4	63	65.8	77	44.9	45	3.26	37	0
2004	53.5	81	64.9	82	42.1	80	4.18	13	2
2003	54.5	73	66.9	68	42.2	78	3.66	29	0
2002	51.8	88	65.4	79	38.3	92	3.12	39	1
2001	58.4	31	69.4	50	47.4	26	3.80	22	0
2000	58.1	37	69.9	47	46.3	33	1.27	77	0
1999	57.6	46	69.5	49	45.7	37	1.88	59	1
1998	62.3	11	73.6	16	50.8	5	5.51	7	1
1997	53.6	80	65.4	79	41.9	82	1.55	69	1
1996	53.2	83	63.3	89	43.1	68	4.51	11	0
1995	55.2	66	65.5	78	44.9	45	4.08	17	2
1994	61.2	15	73.4	18	48.4	20	2.12	54	2
1993	56.4	59	68	62	44.7	53	4.34	12	1
1992	60.4	22	74.4	13	46.9	29	1.25	80	1
1991	60.7	17	71.7	26	49.7	15	4.60	10	0
1990	55.4	63	66.8	69	44	59	1.33	74	0
1989	58.2	35	71.8	25	44.8	48	1.11	82	1
1988	63.9	5	77.6	7	50.1	9	4.02	20	2
1987	62.7	8	74.8	12	50.6	8	2.89	42	0
1986	58.1	37	69.2	53	47	28	3.08	41	1
1985	62.7	8	75.6	10	50	11	3.58	30	1
1984	57.5	48	70	46	44.9	45	1.09	83	0
1983	55.7	61	68.3	60	43.1	68	0.43	92	1
1982	58.6	29	69	57	48.6	18	3.69	28	3
1981	58.1	37	71.4	31	44.8	48	3.31	35	1
1980	62.2	12	77.9	4	46.2	34	0.90	88	1
1979	52.1	86	64.3	84	40	86	1.33	74	0
1978	59.4	26	71.7	26	47.7	23	2.39	49	2
1977	65.5	3	77.9	4	53.2	1	2.52	44	0
1976	58.1	37	73.5	17	42.6	73	0.41	93	2
1975	59.2	27	73	20	45.4	41	0.99	87	0
1974	54.7	70	66.5	72	43	70	4.06	18	0
1973	58.4	31	71.6	28	45.2	43	3.74	25	0
1972	61.6	14	72.4	23	50.8	5	7.57	4	0
1971	56.6	58	71.5	29	41.8	83	3.13	38	1
1970	57.5	48	70.8	38	44.2	56	1.85	60	0
1969							2.40	48	6
1968	54.6	71	66.5	72	42.6	73	4.16	14	0
1967	52.5	85	66.5	72	38.5	91	1.00	85	0
1966	53.8	79	68	62	39.7	89	0.75	90	0
1965	58.8	28	70.5	40	47.1	27	9.76	1	0
1964	60.6	18	73	20	48.1	21	0.59	91	0
1963	57.8	43	70.3	44	45.3	42	2.44	47	1
1962	59.5	23	69.3	52	49.8	13	8.95	3	0
1961	54.9	68	67.6	65	42.2	78	4.06	18	0
1960	57.7	44	71.5	29	44.2	56	1.74	66	2
1959	58.2	35	70.6	39	45.7	37	2.34	50	0
1958	59.5	23	75.5	11	43.9	61	1.42	72	1
1957	54.6	71	66.8	69	42.4	75	5.92	5	0
1956	57.1	53	69.1	55	45.1	44	3.27	36	0
1955	63.3	7	77.8	6	48.8	17	1.82	62	0
1954	51.2	90	64.3	84	38.1	93	9.15	2	0
1953	55.5	62	68.2	61	42.8	71	2.85	43	0
1952	57.1	53	71.3	33	42.8	71	1.27	77	1
1951			71.3	33	46.5	31	2.29	51	5
1949	60.5	21	74.1	14	46.8	30	2.50	46	0
1948	57	55	69.2	53	44.8	48	1.26	79	0
1947	52	87	64.2	87	39.8	87	1.85	60	0
1946	54	77	67	67	40.8	85	1.63	68	1
1945	50.7	91	62.5	92	38.9	90	1.92	58	0
1944	60.6	18	71.1	37	50.1	9	4.14	15	0
1943	54.3	75	66.8	69	41.8	83	3.39	33	3
1942	53.4	82	63.1	90	43.7	64	5.43	8	0
1941	61.7	13	73.7	15	49.8	13	1.75	64	0
1940	57.3	50	70.5	40	44	59	1.52	70	0
1939	63.8	6	76.9	8	50.7	7	2.14	52	0
1938	54.2	76	64.5	83	43.9	61	3.57	31	0
1937	57.3	50	70.5	40	44.2	56	2.52	44	0
1936	62.6	10	76.4	9	48.5	19	2.01	56	1
1935	51.3	89	62.8	91	39.8	87	2.09	55	0
1934	70.3	1	88.9	1	51.8	2	0.36	94	0
1933	58.1	37	70.2	45	46	35	3.84	21	0
1932					47.6	24	3.78	23	13

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1934	70.3
2023	65.6
1977	65.5
2018	65.2
1988	63.9
1939	63.8
1955	63.3
1987	62.7
1985	62.7
1936	62.6

Coldest
Year	Mean, °F
1945	50.7
1954	51.2
1935	51.3
2002	51.8
1947	52
1979	52.1
1967	52.5
2019	52.7
1996	53.2
1942	53.4

Wettest
Year	Precipitation, in
1965	9.76
1954	9.15
1962	8.95
1972	7.57
1957	5.92
2024	5.69
1998	5.51
1942	5.43
2015	5.19
1991	4.60

Driest
Year	Precipitation, in
1934	0.36
1976	0.41
1983	0.43
1964	0.59
1966	0.75
2016	0.87
1980	0.90
1975	0.99
2023	1.00
1967	1.00

The hottest, coldest and wettest days

Hottest day: 94°F; 28 May 2026, 26 May 2026, 25 May 2026
Coldest night: 25°F; 7 May 2026
Wettest day: 0.69 in; 22 May 2026

Every month, season and year

Months

Seasons

Years

Sisseton, SD the day's answers

All-time records

Every answer in words

May 2026 brought 1.94 in of precipitation in Sisseton, SD, the driest May since 2023, 38th driest of 94.
The hottest day of May 2026 in Sisseton, SD: 94°F on Thursday 28 May 2026, Tuesday 26 May 2026 and Monday 25 May 2026.
The coldest night of May 2026 in Sisseton, SD: a low of 25°F on Thursday 7 May 2026.
The wettest day of May 2026 in Sisseton, SD: 0.69 in on Friday 22 May 2026.