Helena, MT: August

31 August 2026: August 2026 averaged 69.8°F in Helena, MT, the warmest August since 2024, tied 20th warmest of 147 (with 2024, 2015 and 1984).

August 2026

Mean temperature: 69.8°F; Warmest since 2024; 20th warmest of 147
Precipitation: 1.34 in; Wettest since 2025; 41st wettest of 146

A normal August in Helena, MT (1991 to 2020): a mean temperature of 69.1°F, between 65.1°F and 72°F in eight years of ten and 0.79 in of precipitation, between 0.28 in and 2.16 in in eight years of ten.

The mean temperature of every August in Helena, MT since 1880: 69.8°F in 2026; the highest is 75.3°F, in 2022.

Normal range, 65.1 to 72°F

Every year, ranked, as a table

Every August in Helena, MT from 1880 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	69.8	20	85	35	54.6	31	1.34	41	0
2025	69.7	24	84.1	43	55.3	19	2.02	13	0
2024	69.8	20	85.6	29	54	40	0.76	70	0
2023	72.3	5	86.6	17	58	3	0.50	97	0
2022	75.3	1	91.7	2	58.9	2	0.48	100	0
2021	68.8	41	82.7	56	54.8	30	1.98	16	0
2020	71.9	7	88.1	7	55.6	15	0.07	140	0
2019	69.7	24	84.4	38	54.9	27	1.62	30	0
2018	68.1	55	83.5	48	52.6	68	0.40	114	0
2017	71	12	87.1	14	55	24	trace	145	0
2016	68	56	84.3	40	51.8	85	0.92	59	0
2015	69.8	20	86.4	20	53.3	48	0.28	124	0
2014	68.9	40	82.9	53	54.9	27	2.11	12	0
2013	71.1	10	87	15	55.2	21	1.71	27	0
2012	70.2	15	87.2	11	53.2	51	0.66	78	0
2011	70	17	86.5	19	53.5	42	0.98	56	0
2010	65.1	108	79.5	98	50.6	102	2.59	8	0
2009	68.4	49	82.5	59	54.4	35	1.86	20	0
2008	69.6	29	86.1	24	53.2	51	0.45	109	0
2007	69.7	24	86.3	22	53.1	55	0.39	116	0
2006	69.3	36	85.4	33	53.2	51	0.25	127	0
2005	68.6	44	85.3	34	51.9	82	0.29	123	0
2004	66.4	83	80.5	87	52.2	76	2.84	4	0
2003	73.4	3	89.5	5	57.4	5	1.03	51	0
2002	64	120	78	114	49.9	113	1.32	42	0
2001	74.6	2	92	1	57.3	6	0.43	110	0
2000	69.6	29	86.2	23	53	59	0.43	110	0
1999	68.4	49	84.6	37	52.1	78	1.92	17	0
1998	68.6	44	86.6	17	50.5	106	0.50	97	0
1997	65.3	104	81.2	74	49.5	121	1.79	24	0
1996	66.5	80	84.8	36	48.3	141	0.89	61	0
1995	65.2	106	84.3	40	46.1	147	0.33	120	0
1994	69.9	18	87.5	9	52.3	73	0.47	105	0
1993	61.5	144	74.3	144	48.7	135	2.79	5	0
1992	64.7	114	81.2	74	48.1	144	1.01	54	0
1991	72.8	4	89.6	4	55.9	14	0.70	75	0
1990	68.4	49	84	45	52.8	64	2.57	9	0
1989	64.3	116	77.5	120	51.1	96	1.61	32	0
1988	68.6	44	85.6	29	51.5	88	0.02	144	0
1987	62.7	135	77.6	119	47.9	145	0.38	117	0
1986	68	56	84.1	43	51.9	82	1.84	22	0
1985	63	132	77.1	128	49	130	2.64	7	0
1984	69.8	20	85.5	31	54.1	39	1.11	49	0
1983	70.7	13	85.5	31	56	13	2.67	6	0
1982	69.1	37	85.7	28	52.5	70	0.74	71	0
1981	69.5	31	86.7	16	52.3	73	0.10	139	0
1980	62.9	134	77.2	123	48.6	137	0.28	124	0
1979	67.7	64	82.5	59	52.9	62	0.79	68	0
1978	65.5	100	81.2	74	49.7	120	0.59	88	0
1977	63.5	126	78.4	113	48.7	135	0.72	72	0
1976	64.7	114	79	104	50.5	106	1.58	34	0
1975	61.2	146	74.1	145	48.3	141	2.47	10	0
1974	61.5	144	73.5	146	49.5	121	4.23	1	0
1973	66.7	76	83.5	48	50	112	0.56	94	0
1972	66	91	80.5	87	51.4	90	1.63	29	0
1971	69	38	87.2	11	50.8	99	1.22	46	0
1970	67.8	62	86.4	20	49.3	124	0.63	82	0
1969	70.1	16	88.8	6	51.3	92	0.38	117	0
1968	63.2	130	77.1	128	49.2	126	2.00	14	0
1967	71.4	8	89.7	3	53.1	55	0.58	93	0
1966	66.7	76	83.5	48	49.9	113	0.42	112	0
1965	65.8	96	79.9	93	51.6	87	1.92	17	0
1964	63.4	127	77.7	117	49	130	1.91	19	0
1963	68	56	84	45	52	79	0.80	67	0
1962	64.9	112	79.6	96	50.2	109	1.80	23	0
1961	71.2	9	87.6	8	54.9	27	0.62	83	0
1960	63.3	129	77.9	116	48.8	133	2.12	11	0
1959	64.1	119	80.4	90	47.9	145	0.36	119	0
1958	69.4	35	85.8	27	53	59	0.59	88	0
1957	66.2	87	81.2	74	51.2	94	1.23	45	0
1956	63.7	124	78.8	107	48.6	137	1.43	37	0
1955	68	56	86.1	24	49.9	113	0.24	129	0
1954	63.9	121	78.5	111	49.4	123	1.35	39	0
1953	66.9	71	83.3	52	50.6	102	0.59	88	0
1952	66	91	81.1	80	51	97	0.66	78	0
1951	62.5	137	75.9	136	49.1	127	1.58	34	0
1950	64.3	116	79.7	94	48.8	133	1.35	39	0
1949	68.3	53	86	26	50.6	102	0.66	78	0
1948	65.6	98	81	83	50.2	109	1.02	52	0
1947	65.4	102	81.8	70	49	130	0.50	97	0
1946	66	91	81.3	73	50.6	102	0.48	100	0
1945	67.7	64	84.2	42	51.3	92	0.46	107	0
1944	62.5	137	76.5	132	48.4	139	1.62	30	0
1943	66.4	83	82.1	65	50.7	101	0.89	61	0
1942	65.7	97	82.4	62	49.1	127	0.60	86	0
1941	67	70	81	83	53.1	55	0.61	85	0
1940	69.9	18	87.3	10	52.5	70	trace	145	0
1939	67.8	62	82.2	64	53.5	42	0.48	100	0
1938	66.1	89	78.9	105	53.3	48	1.24	44	0
1937	66.9	71	80.2	92	53.5	42	0.65	81	0
1936	67.7	64	81.2	74	54.2	36	0.69	76	0
1935	66.5	80	79.7	94	53.2	51	0.62	83	0
1934	68.8	41	82.6	57	55	24	0.03	142	0
1933	65.3	104	77.2	123	53.4	47	3.06	2	0
1932	67.1	69	79.6	96	54.6	31	1.49	36	0
1931	69.7	24	84.4	38	55	24	0.06	141	0
1930	69.5	31	82.6	57	56.3	10	0.54	95	0
1929	72.3	5	87.2	11	57.3	6	0.11	138	0
1928	63.1	131	76.3	134	49.9	113	1.99	15	0
1927	62.3	140	74.5	140	50.2	109	2.91	3	0
1926	64.3	116	76.7	131	51.9	82	0.87	63	0
1925	65.1	108	78.7	109	51.5	88	1.15	48	0
1924	65.5	100	78.7	109	52.2	76	0.25	127	0
1923	64.9	112	77.4	122	52.3	73	1.66	28	0
1922	68.5	47	81.8	70	55.3	19	0.94	58	0
1921	67.9	60	81.9	68	53.9	41	0.68	77	0
1920	66.7	76	80.5	87	53	59	0.79	68	0
1919	69.7	24	82.9	53	56.5	8	0.12	136	0
1918	63.4	127	75.5	137	51.2	94	0.96	57	0
1917	66.2	87	81	83	51.4	90	0.20	133	0
1916	65	110	79.2	103	50.9	98	1.19	47	0
1915	69.5	31	83.4	51	55.6	15	0.59	88	0
1914	65.6	98	79.5	98	51.7	86	0.21	131	0
1913	67.9	60	81.2	74	54.6	31	0.60	86	0
1912	62.7	135	74.5	140	50.8	99	1.60	33	0
1911	61.8	142	74.4	143	49.3	124	0.87	63	0
1910	62.4	139	76.5	132	48.2	143	1.06	50	0
1909	66.9	71	81.9	68	52	79	0.42	112	0
1908	63	132	76.1	135	49.9	113	0.90	60	0
1907	61.6	143	74.9	138	48.4	139	1.00	55	0
1906	65.4	102	78	114	52.7	66	1.79	24	0
1905	68.3	53	82.5	59	54.2	36	0.21	131	0
1904	68.5	47	82	67	55.1	23	0.72	72	0
1903	66	91	78.5	111	53.5	42	0.83	66	0
1902	65	110	77.1	128	52.6	68	0.32	121	1
1901	68.8	41	81.1	80	56.4	9	0.17	134	0
1900	63.9	121	74.9	138	52.8	64	0.59	88	0
1899	60.7	147	72.3	147	49.1	127	1.26	43	0
1898	69	38	82.4	62	55.6	15	0.71	74	0
1897	68.4	49	82.1	65	54.6	31	0.52	96	0
1896	65.2	106	77.7	117	52.7	66	0.86	65	0
1895	66.1	89	78.9	105	53.3	48	0.14	135	0
1894	70.3	14	82.8	55	57.9	4	0.40	114	0
1893	66.4	83	80.8	86	52	79	0.46	107	0
1892	66	91	79.5	98	52.5	70	0.48	100	0
1891	66.5	80	79.5	98	53.5	42	1.02	52	0
1890	66.9	71	79.5	98	54.2	36	0.23	130	0
1889	67.3	68	81.6	72	52.9	62	0.31	122	0
1888	66.7	76	80.3	91	53.1	55	0.26	126	0
1887	62.2	141	74.5	140	49.9	113	1.86	20	0
1886	69.5	31	83.7	47	55.2	21	0.03	142	0
1885	63.8	123	77.2	123	50.5	106	0.48	100	0
1884	67.5	67	78.8	107	56.1	12	0.47	105	0
1883	66.9	71	77.5	120	56.3	10			0
1882	71.1	10	81.1	80	61.2	1	0.12	136	0
1881	66.4	83	77.2	123	55.6	15	1.78	26	0
1880	63.6	125	77.2	123	49.9	113	1.38	38	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2022	75.3
2001	74.6
2003	73.4
1991	72.8
2023	72.3
1929	72.3
2020	71.9
1967	71.4
1961	71.2
2013	71.1
More years share the last value

Coldest
Year	Mean, °F
1899	60.7
1975	61.2
1993	61.5
1974	61.5
1907	61.6
1911	61.8
1887	62.2
1927	62.3
1910	62.4
1951	62.5
More years share the last value

Wettest
Year	Precipitation, in
1974	4.23
1933	3.06
1927	2.91
2004	2.84
1993	2.79
1983	2.67
1985	2.64
2010	2.59
1990	2.57
1975	2.47

Driest
Year	Precipitation, in
2017	trace
1940	trace
1988	0.02
1934	0.03
1886	0.03
1931	0.06
2020	0.07
1981	0.10
1929	0.11
1919	0.12
More years share the last value

The hottest, coldest and wettest days

Hottest day: 103°F; 1 August 2026
Coldest night: 44°F; 31 August 2026
Wettest day: 0.31 in; 28 August 2026

Every month, season and year

Months

Seasons

Years

Helena, MT the day's answers

All-time records

Every answer in words

August 2026 brought 1.34 in of precipitation in Helena, MT, the wettest August since 2025, 41st wettest of 146.
The hottest day of August 2026 in Helena, MT: 103°F on Saturday 1 August 2026.
The coldest night of August 2026 in Helena, MT: a low of 44°F on Monday 31 August 2026.
The wettest day of August 2026 in Helena, MT: 0.31 in on Friday 28 August 2026.