Great Falls, MT: August

31 August 2026: August 2026 averaged 66.6°F in Great Falls, MT, the coldest August since 2021, tied 54th coldest of 133 (with 2018 and 1914).

August 2026

Mean temperature: 66.6°F; Coldest since 2021; 54th coldest of 133
Precipitation: 1.44 in; Wettest since 2021; 41st wettest of 135

A normal August in Great Falls, MT (1991 to 2020): a mean temperature of 67.3°F, between 63.9°F and 69.8°F in eight years of ten and 1.10 in of precipitation, between 0.23 in and 2.50 in in eight years of ten.

The mean temperature of every August in Great Falls, MT since 1894: 66.6°F in 2026; the lowest is 60.5°F, in 1993.

Normal range, 63.9 to 69.8°F

Every year, ranked, as a table

Every August in Great Falls, MT from 1892 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	66.6	78	82.6	65	50.7	91	1.44	41	0
2025	68.2	49	84	45	52.5	56	0.61	87	0
2024	67.1	70	84	45	50.2	103	0.66	82	0
2023	69	38	84.5	39	53.4	39	0.63	84	0
2022	72.3	4	90	2	54.5	23	0.40	107	0
2021	66.1	86	80.9	88	51.3	81	2.18	23	0
2020	68.9	40	86.8	18	51.1	82	0.10	130	0
2019	66.8	75	82.6	65	51.1	82	1.15	55	0
2018	66.6	78	82.9	63	50.3	102	0.67	78	0
2017	67	73	83.5	53	50.4	99	0.06	132	0
2016	65.4	94	82.3	73	48.5	124	1.12	56	0
2015	68.6	42	85.6	30	51.6	78	0.38	108	0
2014	67.3	63	81.3	86	53.3	40	4.39	6	0
2013	69.7	26	87	17	52.5	56	1.08	62	0
2012	69.2	35	87.9	10	50.5	94	0.36	111	0
2011	69.4	30	86.8	18	52.1	67	0.36	111	0
2010	65	104	79.7	97	50.2	103	2.05	27	0
2009	65.2	101	79.6	99	50.9	89	1.01	64	0
2008	68.1	51	84.2	41	52	71	1.31	46	0
2007	67.6	61	84.7	37	50.5	94	0.24	122	0
2006	67.2	67	83.3	59	51.1	82	1.33	45	0
2005	65.8	87	82.2	74	49.4	119	0.97	66	0
2004	64.4	113	79.1	103	49.8	114	2.55	18	0
2003	71	12	87.6	15	54.3	29	1.31	46	0
2002	60.8	132	74.3	129	47.3	130	2.49	20	0
2001	70.8	16	88.4	5	53.2	42	0.26	119	0
2000	68.3	48	86.3	23	50.4	99	0.12	127	0
1999	68	54	83.4	56	52.5	56	2.18	23	0
1998	69.1	36	86.1	26	52.1	67	1.72	32	0
1997	65.3	99	80.7	91	49.9	111	1.61	38	0
1996	67.3	63	84.9	34	49.6	116	0.67	78	0
1995	64	118	81.4	82	46.6	134	0.55	95	0
1994	67.1	70	83.3	59	51	87	0.60	91	0
1993	60.5	133	72.7	133	48.3	126	3.04	10	0
1992	62.9	122	78	110	47.8	129	1.37	43	0
1991	71.6	8	87.9	10	55.4	13	1.35	44	0
1990	68.5	46	83	62	54	34	3.19	7	0
1989	64	118	77.3	117	50.7	91	4.88	4	0
1988	67.1	70	83.6	51	50.5	94	0.26	119	0
1987	61.5	131	75.1	125	48	127	2.43	22	0
1986	69	38	83.5	53	54.5	23	0.81	72	0
1985	61.7	130	73.9	132	49.6	116	4.90	3	0
1984	71.6	8	87.9	10	55.3	16	1.01	64	0
1983	72.4	2	88.1	7	56.7	6	1.10	60	0
1982	65	104	80.8	89	49.2	120	0.41	106	0
1981	69.7	26	86.4	22	53.1	46	1.21	51	0
1980	62.3	126	75.7	122	49	122	0.67	78	0
1979	68.5	46	83.9	48	53.1	46	0.29	116	0
1978	66.5	81	80.8	89	52.1	67	1.04	63	0
1977	62.5	125	75.5	123	49.5	118	1.94	30	0
1976	67.8	58	81.5	81	54.2	30	1.91	31	0
1975	64.8	110	77.5	115	52	71	2.13	26	0
1974	62.9	122	75	126	50.8	90	4.76	5	0
1973	71.1	10	86	27	56.3	9	0.88	69	0
1972	69.6	28	82.4	70	56.7	6	1.26	50	0
1971	76	1	92.9	1	59	1	1.16	54	0
1970	70.9	15	88	9	53.8	36	0.77	73	0
1969	72	5	89.4	4	54.7	21	0.03	135	0
1968	64.4	113	77.1	119	51.7	77	2.16	25	0
1967	71	12	88.1	7	53.9	35	0.23	123	0
1966	65	104	80	95	50.1	107	0.77	73	0
1965	68	54	81.6	80	54.4	26	1.58	39	0
1964	65.3	99	78.4	107	52.3	64	1.66	36	0
1963	68.7	41	84.2	41	53.3	40	0.49	101	0
1962	67.3	63	81.4	82	53.2	42	1.69	33	0
1961	72.4	2	87.7	13	57.1	3	0.63	84	0
1960	65.4	94	77.7	113	53.2	42	2.66	14	0
1959	65.7	89	78.4	107	53.1	46	0.37	109	0
1958	71.1	10	84.9	34	57.4	2	0.42	105	0
1957	65.5	92	78.7	105	52.4	62	1.11	58	0
1956	65.1	103	77.6	114	52.6	55	1.68	34	0
1955	70.3	18	85.3	31	55.3	16	0.04	134	0
1954	65	104	77.1	119	53	49	2.63	16	0
1953	69.1	36	82.8	64	55.4	13	0.56	94	0
1952	66.3	82	79.4	102	53.2	42	1.21	51	0
1951	62.7	124	74.4	128	51	87	2.50	19	0
1950	64.5	112	77.1	119	51.9	74	2.94	11	0
1949	71	12	85.3	31	56.6	8	0.27	117	0
1948	68.6	42	81.7	78	55.5	12	0.50	99	0
1947	66.8	75	80.2	92	53.5	38	0.30	115	0
1946	66.7	77	79.6	99	53.8	36	1.18	53	0
1945	70.2	20	83.6	51	56.8	4	0.85	70	0
1944	64.9	109	77.2	118	52.5	56	1.44	41	0
1943	68.1	51	81.7	78	54.5	23	0.64	83	0
1942	67.2	67	80.2	92	54.2	30	0.67	78	0
1941	67.5	62	79.8	96	55.3	16	0.68	77	0
1940	70.4	17	86.2	25	54.6	22	0.05	133	0
1939	69.5	29	86.6	21	52.5	56	0.59	92	0
1938	67.2	67	82.5	67	51.8	76	1.64	37	0
1937	68	54	84.6	38	51.5	79	0.61	87	0
1936	70.2	20	86.3	23	54.1	33	0.43	103	0
1935	66.2	85	83.2	61	49.2	120	0.50	99	0
1934	68.2	49	85.9	28	50.5	94	0.16	126	0
1933	67.8	58	83.5	53	52.2	66	5.34	1	0
1932	67.9	57	83.4	56	52.4	62	4.95	2	0
1931	69.4	30	86.8	18	51.9	74	0.89	68	0
1930	71.7	7	88.3	6	55.1	19	0.45	102	0
1929	71.8	6	89.5	3	54.2	30	0.32	114	0
1928	63.8	121	79.6	99	47.9	128	2.62	17	0
1927	63.9	120	77.9	111	49.9	111	2.45	21	0
1926	65.7	89	81.4	82	50.1	107	1.27	49	0
1925	65.5	92	82.4	70	48.6	123	0.43	103	0
1924	64.2	117	81.4	82	47	132	0.53	97	0
1923	65.6	91	81	87	50.2	103	1.95	29	0
1922	70	22	85.7	29	54.4	26	0.63	84	0
1921	67.3	63	84	45	50.5	94	0.61	87	0
1920	68.1	51	84.3	40	52	71	0.35	113	0
1919	69.4	30	87.7	13	51.1	82	0.37	109	0
1918	65.8	87	81.8	76	49.7	115	2.05	27	0
1917	66.3	82	84.1	44	48.5	124	0.97	66	0
1916	65.4	94	80.1	94	50.7	91	1.12	56	0
1915	70	22	85.1	33	55.1	19	1.67	35	1
1914	66.6	78	81.8	76	51.4	80	0.51	98	0
1913	69.4	30	83.4	56	55.4	13	1.11	58	0
1912	64.3	115	75.5	123	53	49	3.10	9	0
1911	62.2	129	74.1	131	50.4	99	2.67	12	0
1910	64.3	115	78.4	107	50.1	107	0.25	121	0
1909	68.6	42	84.2	41	53	49	0.61	87	0
1908	65	104	79	104	51.1	82	3.13	8	0
1907	62.3	126	74.3	129	50.1	107	2.67	12	1
1906	65.4	94	77.8	112	53	49	2.66	14	0
1905	70.3	18	83.8	49	56.8	4	0.82	71	0
1904	67.7	60	82.4	70	53	49	0.57	93	0
1903	65.4	94	78.7	105	52.1	67	0.74	76	0
1902	67	73	79.7	97	54.4	26	0.55	95	0
1901	69.8	24	83.7	50	56	11	0.12	127	0
1900	65.2	101	77.4	116	52.9	54	1.53	40	0
1899	62.3	126	74.7	127	49.9	111	1.10	60	0
1898	69.4	30	82.5	67	56.2	10	1.29	48	0
1897	69.8	24	87.5	16	52.5	56	0.07	131	3
1896	64.6	111	82.1	75	47.1	131	0.27	117	0
1895	66.3	82	82.5	67	50.2	103	0.20	124	0
1894	68.6	42	84.9	34	52.3	64	0.17	125	0
1893					44.4	135	0.11	129	14
1892					46.7	133	0.76	75	13

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1971	76
1983	72.4
1961	72.4
2022	72.3
1969	72
1929	71.8
1930	71.7
1991	71.6
1984	71.6
1973	71.1
More years share the last value

Coldest
Year	Mean, °F
1993	60.5
2002	60.8
1987	61.5
1985	61.7
1911	62.2
1980	62.3
1907	62.3
1899	62.3
1977	62.5
1951	62.7

Wettest
Year	Precipitation, in
1933	5.34
1932	4.95
1985	4.90
1989	4.88
1974	4.76
2014	4.39
1990	3.19
1908	3.13
1912	3.10
1993	3.04

Driest
Year	Precipitation, in
1969	0.03
1955	0.04
1940	0.05
2017	0.06
1897	0.07
2020	0.10
1893	0.11
2000	0.12
1901	0.12
1934	0.16

The hottest, coldest and wettest days

Hottest day: 102°F; 1 August 2026
Coldest night: 38°F; 4 August 2026
Wettest day: 0.74 in; 14 August 2026

Every month, season and year

Months

Seasons

Years

Great Falls, MT the day's answers

All-time records

Every answer in words

August 2026 brought 1.44 in of precipitation in Great Falls, MT, the wettest August since 2021, tied 41st wettest of 135 (with 1944).
The hottest day of August 2026 in Great Falls, MT: 102°F on Saturday 1 August 2026.
The coldest night of August 2026 in Great Falls, MT: a low of 38°F on Tuesday 4 August 2026.
The wettest day of August 2026 in Great Falls, MT: 0.74 in on Friday 14 August 2026.