Great Falls, MT: records

4 October 2026: The hottest day on record in Great Falls, MT: 107°F on Tuesday 25 July 1933.

The record begins: 1891

All-time records

Hottest day: 107°F; 25 July 1933
Coldest night: -49°F; 15 February 1936
Wettest day: 3.36 in; 23 June 1907
Warmest night: 76°F; 13 July 1953
Coldest day: -26°F; 29 December 1968

Daily records by decade

New daily records set in Great Falls, MT by decade since the 1920s: the most record highs, 150, came in the 1930s; the most record lows, 82, in the 1920s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1890s	0	0	9
1900s	0	0	10
1910s	0	0	10
1920s	64	82	10
1930s	150	80	10
1940s	32	22	10
1950s	30	60	10
1960s	60	36	10
1970s	38	20	10
1980s	46	45	10
1990s	29	50	10
2000s	33	35	10
2010s	24	20	10
2020s	31	27	7

Records by month

Month	Highest	Lowest	Wettest day
January	67°F 26 January 2015, 31 January 1992	-44°F 10 January 1909	0.72 in 2 January 1955
February	70°F 5 February 2026, 27 February 1992, 27 February 1932	-49°F 15 February 1936	0.93 in 12 February 1897
March	78°F 30 March 2004, 29 March 1978	-32°F 3 March 2019, 10 March 1932	1.09 in 13 March 1896
April	89°F 20 April 1980	-10°F 2 April 1936	2.20 in 30 April 1951
May	100°F 28 May 1919	12°F 1 May 2009	2.75 in 15 May 1902
June	102°F 21 June 1919, 21 June 1900	31°F 8 June 2009, 10 June 1999, 8 June 1950 and 1 more	3.36 in 23 June 1907
July	107°F 25 July 1933	35°F 4 July 1915, 1 July 1894	1.61 in 10 July 1983
August	106°F 24 August 1969, 5 August 1961	30°F 24 August 1992	2.87 in 23 August 2014
September	102°F 3 September 2022	10°F 24 September 1926	1.56 in 27 September 1982
October	91°F 1 October 1992, 3 October 1943	-11°F 30 October 1991	2.28 in 3 October 2015
November	76°F 7 November 1999, 5 November 1975	-25°F 28 November 1985, 23 November 1985, 18 November 1903	1.14 in 8 November 1906, 23 November 1892
December	69°F 1 December 2021, 5 December 1939	-43°F 29 December 1968	0.77 in 14 December 2015

Streaks, months and years

Longest heat streak	18 days	30 July to 16 August 1971	A high of 90°F or above
Longest cold streak	32 days	3 February to 6 March 2019	A high of 32°F or below
Wettest month	8.13 in	May 1953
Driest month	0.00 in	November 1917
Wettest year	25.24 in	1975
Driest year	6.68 in	1904

Every record in words

The coldest night on record in Great Falls, MT: a low of -49°F on Saturday 15 February 1936.
The wettest day on record in Great Falls, MT: 3.36 in on Sunday 23 June 1907.
The warmest night on record in Great Falls, MT: a low of 76°F on Monday 13 July 1953.
The coldest day on record in Great Falls, MT: a high of -26°F on Sunday 29 December 1968.
The longest run of days with a high of 90°F or above in Great Falls, MT: 18 days, from Friday 30 July to Monday 16 August 1971.
The longest run of days with a high of 32°F or below in Great Falls, MT: 32 days, from Sunday 3 February to Wednesday 6 March 2019.
The wettest month on record in Great Falls, MT: May 1953, with 8.13 in of precipitation.
The driest month on record in Great Falls, MT: November 1917, with 0.00 in of precipitation.
The wettest year on record in Great Falls, MT: 1975, with 25.24 in of precipitation.
The driest year on record in Great Falls, MT: 1904, with 6.68 in of precipitation.

Great Falls, MT the day's answers