Great Falls, MT: December

31 December 2025: December 2025 averaged 33.4°F in Great Falls, MT, the warmest December since 2024, 20th warmest of 132.

December 2025

Mean temperature: 33.4°F; Warmest since 2024; 20th warmest of 132
Precipitation: 0.38 in; Driest since 2023; 47th driest of 135

A normal December in Great Falls, MT (1991 to 2020): a mean temperature of 26.7°F, between 16.4°F and 33.5°F in eight years of ten and 0.32 in of precipitation, between 0.11 in and 1.26 in in eight years of ten.

The mean temperature of every December in Great Falls, MT since 1893: 33.4°F in 2025; the highest is 37.6°F, in 2023.

Normal range, 16.4 to 33.5°F

Every year, ranked, as a table

Every December in Great Falls, MT from 1891 to 2025, 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
2025	33.4	20	44.5	9	22.4	34	0.38	87	0
2024	35.4	9	45.8	3	24.9	18	0.48	73	0
2023	37.6	1	47.8	1	27.4	7	0.08	129	0
2022	17.2	117	25.7	120	8.7	112	0.90	37	0
2021	20.1	106	31.9	97	8.3	117	0.89	38	0
2020	33.8	17	43.5	17	24.2	24	0.10	128	0
2019	31.7	34	40.5	37	22.9	30	0.17	118	0
2018	29.4	56	38.8	49	20	58	0.33	92	0
2017	21.1	102	29.4	109	12.8	101	1.31	18	0
2016	14.3	127	22.4	130	6.2	126	0.89	38	0
2015	26.6	79	35.1	77	18.2	78	1.07	27	0
2014	28.4	66	37.8	63	19	68	1.10	26	0
2013	21.1	102	32.1	96	10	107	0.94	35	0
2012	25.8	82	34.6	86	17	81	0.55	62	0
2011	31.6	35	40.8	35	22.4	34	0.20	110	0
2010	23.2	95	32.2	95	14.2	95	1.56	7	0
2009	14.3	127	23.7	128	4.8	130	0.76	47	0
2008	16.5	119	26.1	119	6.8	121	1.43	12	0
2007	26.7	76	35.8	75	17.5	79	0.12	125	0
2006	32	31	41.2	30	22.8	32	0.59	57	0
2005	25	87	32.7	93	17.3	80	0.29	98	0
2004	31.3	39	42	22	20.6	50	0.43	77	0
2003	30.3	46	40.7	36	20	58	0.11	126	0
2002	30.8	43	40.2	40	21.4	44	0.29	98	0
2001	25.3	85	34.9	79	15.8	88	0.39	85	0
2000	19.1	109	30	107	8.3	117	0.19	113	0
1999	35.1	11	45	6	25.3	16	0.03	133	0
1998	24.7	88	34.8	81	14.6	93	0.22	109	0
1997	30.7	44	39.8	42	21.6	40	0.33	92	0
1996	15.3	124	23.8	127	6.7	123	1.25	19	0
1995	26.7	76	38.5	51	14.8	92	0.14	122	0
1994	28.6	62	38.3	56	18.9	70	0.24	105	0
1993	33.5	19	41.5	26	25.6	13	0.30	96	0
1992	18.4	110	28	113	8.7	112	0.31	94	0
1991	34.9	13	44.4	11	25.5	15	0.08	129	0
1990	17.8	115	28.6	111	6.9	120	0.73	51	0
1989	27.5	71	36.4	71	18.5	75	1.32	16	0
1988	29.5	54	38.5	51	20.5	52	0.97	34	0
1987	29.6	52	38.1	60	21.1	48	0.24	105	0
1986	33.1	21	42	22	24.3	23	0.27	101	0
1985	24.6	89	32.8	92	16.4	83	0.47	74	0
1984	13	129	23.3	129	2.7	132	1.25	19	0
1983	4	132	14.6	133	-6.6	134	0.70	53	0
1982	26.7	76	34.2	87	19.3	65	0.99	31	0
1981	24.6	89	34.8	81	14.4	94	0.43	77	0
1980	23.7	92	31.9	97	15.6	89	0.27	101	0
1979	34.6	14	46.1	2	23.1	29	0.26	104	0
1978	17.3	116	26.2	117	8.5	115	1.05	28	0
1977	16.5	119	25.3	123	7.7	119	1.92	2	0
1976	31.5	36	41.3	27	21.8	39	0.51	70	0
1975	28.6	62	38.2	59	18.9	70	0.55	62	0
1974	32.5	26	41	32	24	25	0.60	56	0
1973	28.9	61	36.6	68	21.2	45	1.37	14	0
1972	17.9	113	26.7	116	9.1	110	1.68	6	0
1971	17.9	113	29.2	110	6.7	123	1.48	8	0
1970	23	96	32.5	94	13.4	98	0.70	53	0
1969	29.9	50	37.9	62	21.9	38	0.40	82	0
1968	16.1	122	25.5	122	6.6	125	1.36	15	0
1967	22	99	31.1	103	13	100	1.47	9	0
1966	27.9	69	36	73	19.8	60	0.99	31	0
1965	29.1	58	38.4	54	19.8	60	0.59	57	0
1964	11.1	131	21.3	132	1	133	1.23	21	0
1963	23.5	94	31.8	99	15.2	91	1.02	30	0
1962	32.6	25	42.3	21	22.9	30	0.51	70	0
1961	20.3	105	30.2	106	10.4	106	0.30	96	0
1960	30.1	48	38.3	56	22	37	0.19	113	0
1959	36	6	44.5	9	27.5	6	0.43	77	0
1958	29.9	50	38.3	56	21.5	42	1.17	24	0
1957	36.6	5	44.3	12	28.8	3	0.11	126	0
1956	29.1	58	38.9	48	19.4	64	0.59	57	0
1955	22.3	97	31.5	101	13.1	99	0.55	62	0
1954	34.6	14	42.8	20	26.3	10	trace	135	0
1953	32.5	26	40.5	37	24.5	21	0.98	33	0
1952	32.5	26	39.3	46	25.7	12	0.08	129	0
1951	15.2	125	24.3	126	6.1	127	1.71	4	0
1950	33	22	41	32	24.9	18	0.58	60	0
1949	19.9	107	30.8	104	8.9	111	0.53	65	0
1948	18.4	110	26.8	115	10	107	0.53	65	0
1947	31	42	38.7	50	23.4	28	0.44	76	0
1946	26.9	74	35	78	18.7	73	0.86	42	0
1945	24.1	91	31.7	100	16.4	83	1.73	3	0
1944	28.6	62	36.9	66	20.3	55	0.50	72	0
1943	32.8	23	40.4	39	25.2	17	0.42	80	0
1942	28.2	67	36	73	20.4	53	0.06	132	0
1941	28.5	65	36.3	72	20.7	49	1.19	23	0
1940	32.8	23	41.2	30	24.4	22	0.18	116	0
1939	36.7	4	45.2	5	28.1	4	0.31	94	0
1938	29.3	57	38.4	54	20.2	56	0.02	134	0
1937			36.5	69	15.5	90	0.78	46	4
1936	25.4	83	34.8	81	15.9	86	0.56	61	0
1935	32.1	29	41.8	25	22.4	34	0.15	120	0
1934	27.7	70	36.5	69	18.8	72	0.81	44	0
1933	22	99	32.9	91	11.1	104	1.04	29	0
1932	21.1	102	29.6	108	12.5	102	1.12	25	0
1931	31.1	41	39.8	42	22.5	33	0.40	82	0
1930	35.6	8	44.6	8	26.6	9	0.14	122	0
1929	22.2	98	30.6	105	13.8	97	1.46	10	0
1928	29	60	38.5	51	19.5	63	0.71	52	0
1927	12.8	130	22.2	131	3.3	131	0.63	55	0
1926	25.4	83	34.9	79	15.9	86	0.85	43	0
1925	35.9	7	44.2	14	27.7	5	0.46	75	0
1924	15.1	126	24.7	125	5.4	128	0.89	38	0
1923	30.1	48	39.8	42	20.4	53	0.52	68	0
1922	16.7	118	24.8	124	8.6	114	1.32	16	0
1921	25.1	86	33.8	89	16.4	83	1.69	5	0
1920	29.5	54	37.4	64	21.6	40	0.28	100	0
1919	21.6	101	31.4	102	11.7	103	1.38	13	0
1918	31.9	33	43.3	19	20.6	50	0.14	122	0
1917	18	112	27.5	114	8.5	115	2.49	1	0
1916	15.4	123	25.6	121	5.1	129	0.88	41	0
1915	30.6	45	41	32	20.2	56	0.40	82	0
1914	16.3	121	26.2	117	6.8	121	0.42	80	2
1913	34.4	16	44.9	7	23.8	27	0.27	101	0
1912	35.4	9	43.5	17	27.4	7	0.19	113	0
1911	26.8	75	34.8	81	18.7	73	0.75	48	0
1910	31.2	40	41.3	27	21.2	45	0.20	110	0
1909	19.2	108	28.6	111	9.8	109	0.75	48	0
1908	30.2	47	39.2	47	21.2	45	0.16	119	0
1907	35.1	11	44.2	14	26	11	0.52	68	0
1906	27	73	37.1	65	16.8	82	1.45	11	0
1905	31.4	37	38	61	24.9	18	0.18	116	0
1904	31.4	37	41.3	27	21.5	42	0.38	87	0
1903	33.8	17	41.9	24	25.6	13	0.91	36	0
1902	23.6	93	33	90	14.2	95	0.39	85	0
1901	32.1	29	40.2	40	24	25	0.53	65	0
1900	37	3	44.3	12	29.7	1	0.20	110	0
1899	26.2	81	34	88	18.5	75	0.80	45	0
1898	27.4	72	35.2	76	19.6	62	0.37	90	0
1897	26.6	79	34.7	85	18.5	75	0.37	90	0
1896	37.3	2	45.4	4	29.3	2	0.15	120	0
1895	28	68	36.8	67	19.2	67	0.23	107	0
1894	32	31	43.8	16	19.3	65	0.74	50	3
1893	29.6	52	39.6	45	19	68	0.38	87	1
1892					11.1	104	1.20	22	11
1891							0.23	107	28

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2023	37.6
1896	37.3
1900	37
1939	36.7
1957	36.6
1959	36
1925	35.9
1930	35.6
2024	35.4
1912	35.4

Coldest
Year	Mean, °F
1983	4
1964	11.1
1927	12.8
1984	13
2016	14.3
2009	14.3
1924	15.1
1951	15.2
1996	15.3
1916	15.4

Wettest
Year	Precipitation, in
1917	2.49
1977	1.92
1945	1.73
1951	1.71
1921	1.69
1972	1.68
2010	1.56
1971	1.48
1967	1.47
1929	1.46

Driest
Year	Precipitation, in
1954	trace
1938	0.02
1999	0.03
1942	0.06
2023	0.08
1991	0.08
1952	0.08
2020	0.10
2003	0.11
1957	0.11

The hottest, coldest and wettest days

Hottest day: 63°F; 15 December 2025, 14 December 2025
Coldest night: -8°F; 28 December 2025
Wettest day: 0.10 in; 2 December 2025

Every month, season and year

Months

Seasons

Years

Great Falls, MT the day's answers

All-time records

Every answer in words

December 2025 brought 0.38 in of precipitation in Great Falls, MT, the driest December since 2023, tied 47th driest of 135 (with 1904 and 1893).
The hottest day of December 2025 in Great Falls, MT: 63°F on Monday 15 December 2025 and Sunday 14 December 2025.
The coldest night of December 2025 in Great Falls, MT: a low of -8°F on Sunday 28 December 2025.
The wettest day of December 2025 in Great Falls, MT: 0.10 in on Tuesday 2 December 2025.