Sisseton, SD: August

31 August 2026: August 2026 averaged 68.7°F in Sisseton, SD, the coldest August since 2025, tied 30th coldest of 94 (with 2005).

August 2026

Mean temperature: 68.7°F; Coldest since 2025; 30th coldest of 94
Precipitation: 0.23 in; Driest since 2003; 3rd driest of 96

A normal August in Sisseton, SD (1991 to 2020): a mean temperature of 68.7°F, between 65.9°F and 72.2°F in eight years of ten and 2.19 in of precipitation, between 0.81 in and 4.33 in in eight years of ten.

The mean temperature of every August in Sisseton, SD since 1932: 68.7°F in 2026; the lowest is 62.9°F, in 2004.

Normal range, 65.9 to 72.2°F

Every year, ranked, as a table

Every August in Sisseton, SD from 1931 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	68.7	64	80.8	65	56.5	68	0.23	94	0
2025	68.5	69	79	78	58.1	42	3.68	23	0
2024	68.9	60	78.8	79	58.9	29	3.54	29	0
2023	70.8	35	82.5	42	59.2	27	6.45	4	0
2022	71.1	32	82.2	47	60	22	3.49	30	0
2021	71.4	30	82.9	39	60	22	7.98	1	0
2020	70	43	82.4	45	57.5	49	2.28	52	0
2019	65.9	88	75.7	94	56.2	72	4.94	11	0
2018	68.2	72	79.4	76	57	59	1.14	76	0
2017	66.1	87	77.2	91	54.9	86	5.30	8	0
2016	70	43	82.1	49	57.8	47	4.28	18	0
2015	68.2	72	81.2	60	55.2	84	2.19	55	0
2014	68.2	72	78.4	82	58	44	2.18	56	0
2013	70	43	82.8	40	57.2	54	0.95	83	0
2012	67.1	84	81.4	58	52.8	92	1.06	79	0
2011	69.9	49	80.9	61	58.8	30	3.60	26	0
2010	72.2	23	83.1	36	61.3	8	2.67	44	0
2009	65.7	91	76.8	93	54.5	87	4.29	17	0
2008	69	57	81.5	56	56.6	64	1.56	68	0
2007	67.2	82	78.3	84	56	76	2.24	54	0
2006	69.9	49	81.5	56	58.4	35	4.73	15	0
2005	68.7	64	80.7	66	56.8	62	3.57	28	0
2004	62.9	94	75.1	95	50.7	94	0.67	88	0
2003	72.5	16	84.9	22	60.1	19	0.13	96	2
2002	68.3	71	79.5	73	57.1	57	2.98	36	2
2001	70	43	82.8	40	57.2	54	0.83	85	0
2000	69.6	53	83	38	56.2	72	2.10	57	0
1999	68.6	66	80.6	67	56.6	64	2.62	46	3
1998	72.3	21	84	29	60.5	13	2.73	40	2
1997	68.5	69	79.5	73	57.6	48	2.08	58	2
1996	70.3	38	82.5	42	58	44	0.60	91	1
1995	72.4	19	82.5	42	62.3	3	3.61	24	0
1994	66.6	86	77.2	91	55.9	78	1.47	69	0
1993	68	76	78.6	81	57.3	53	1.93	63	1
1992	65.6	93	77.3	90	53.8	90	1.34	73	0
1991	71.6	28	82.4	45	61	12	1.86	65	1
1990	70.1	41	81.7	53	58.5	33	3.19	35	0
1989	69.9	49	80.9	61	58.8	30	6.03	6	0
1988	73	14	85.5	20	60.4	16	4.68	16	0
1987	68.6	66	80.9	61	56.2	72	1.38	72	1
1986	66.7	85	78.2	85	55.3	83	2.91	38	0
1985	67.4	81	77.7	88	57.2	54	2.66	45	0
1984	73.9	12	86.5	14	61.5	6	3.33	31	2
1983	77.1	1	90.6	2	63.8	1	5.06	10	1
1982	71.1	32	84.8	26	57.5	49	0.98	80	0
1981	71	34	83.4	33	58.5	33	1.47	69	1
1980	68.9	60	80.9	61	56.9	60	5.25	9	1
1979	67.5	79	78.4	82	56.6	64	1.45	71	0
1978	71.7	27	84	29	59.4	26	2.73	40	1
1977	65.7	91	77.5	89	53.9	89	2.46	50	1
1976	75.9	2	91.7	1	60.2	17	1.09	78	1
1975	70.3	38	83.1	36	57.5	49	4.74	14	1
1974	69.3	55	83.5	32	55.2	84	2.37	51	0
1973	75.3	5	88.7	6	62	4	0.98	80	0
1972	73.5	13	85.7	19	61.2	9	1.20	75	0
1971	72.3	21	87.5	11	57.1	57	2.91	38	0
1970	72.5	16	86.4	16	58.4	35	0.40	92	1
1969	75.9	2	90.4	3	61.6	5	0.14	95	3
1968	70	43	84.4	28	55.6	80	1.65	67	0
1967			83.7	31			4.07	19	7
1966	67.8	77	79.4	76	56.3	71	6.36	5	0
1965	69.2	56	81.8	51	56.6	64	2.08	58	0
1964	67.5	79	79.5	73	55.5	81	6.91	2	0
1963	70.5	36	82	50	59.1	28	2.47	49	0
1962	72.4	19	84.9	22	59.9	24	0.62	90	0
1961	74.6	9	88	10	61.2	9	1.99	61	0
1960	72.1	24	84.5	27	59.7	25	3.24	34	0
1959	74.9	6	89.3	4	60.2	17	1.68	66	1
1958	71.9	25	87.3	12	56.5	68	1.13	77	0
1957	68.9	60	79.7	69	58.2	40	5.40	7	0
1956	68.6	66	81.8	51	55.5	81	4.05	20	0
1955	74.4	10	87.2	13	61.4	7	3.61	24	1
1954	69	57	81.7	53	56.4	70	2.50	48	0
1953	71.6	28	83.2	35	60.1	19	3.90	22	0
1952	70.5	36	84.9	22	56	76	0.98	80	0
1951	65.8	90	78.1	87	53.5	91	3.59	27	0
1950	65.9	88	80.1	68	51.8	93	2.07	60	1
1949	74.7	7	88.3	7	61.1	11	0.91	84	0
1948	70.1	41	82.2	47	58.1	42	2.69	43	0
1947	75.8	4	88.2	9	63.3	2	0.81	86	0
1946	67.2	82	78.2	85	56.1	75	0.32	93	0
1945	69	57	79.7	69	58.3	38	2.28	52	0
1944	68.2	72	79.7	69	56.7	63	3.98	21	0
1943	70	43	81.7	53	58.3	38	2.92	37	0
1942	68.9	60	79.6	72	58.2	40	4.76	13	0
1941	69.9	49	81.4	58	58.4	35	6.49	3	0
1940	67.8	77	78.7	80	56.9	60	3.26	32	0
1939	71.9	25	86.4	16	57.4	52	1.22	74	0
1938	74.2	11	88.3	7	60.5	13	0.63	89	1
1937	74.7	7	89.3	4	60.1	19	3.25	33	0
1936	72.5	16	86.4	16	58.7	32	1.95	62	0
1935	69.5	54	83.3	34	55.7	79	1.93	63	0
1934	70.3	38	86.5	14	54.1	88	2.70	42	0
1933	72.9	15	85.3	21	60.5	13	0.77	87	0
1932	71.4	30	84.9	22	57.9	46	4.77	12	0
1931							2.57	47	31

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1983	77.1
1976	75.9
1969	75.9
1947	75.8
1973	75.3
1959	74.9
1949	74.7
1937	74.7
1961	74.6
1955	74.4

Coldest
Year	Mean, °F
2004	62.9
1992	65.6
2009	65.7
1977	65.7
1951	65.8
2019	65.9
1950	65.9
2017	66.1
1994	66.6
1986	66.7

Wettest
Year	Precipitation, in
2021	7.98
1964	6.91
1941	6.49
2023	6.45
1966	6.36
1989	6.03
1957	5.40
2017	5.30
1980	5.25
1983	5.06

Driest
Year	Precipitation, in
2003	0.13
1969	0.14
2026	0.23
1946	0.32
1970	0.40
1996	0.60
1962	0.62
1938	0.63
2004	0.67
1933	0.77

The hottest, coldest and wettest days

Hottest day: 86°F; 20 August 2026, 3 August 2026
Coldest night: 47°F; 28 August 2026, 23 August 2026
Wettest day: 0.09 in; 14 August 2026

Every month, season and year

Months

Seasons

Years

Sisseton, SD the day's answers

All-time records

Every answer in words

August 2026 brought 0.23 in of precipitation in Sisseton, SD, the driest August since 2003, 3rd driest of 96.
The hottest day of August 2026 in Sisseton, SD: 86°F on Thursday 20 August 2026 and Monday 3 August 2026.
The coldest night of August 2026 in Sisseton, SD: a low of 47°F on Friday 28 August 2026 and Sunday 23 August 2026.
The wettest day of August 2026 in Sisseton, SD: 0.09 in on Friday 14 August 2026.