Deer Lodge, MT: records

31 August 2026: The hottest day on record in Deer Lodge, MT: 108°F on Monday 22 July 1901.

The record begins: 1893

All-time records

Hottest day: 108°F; 22 July 1901
Coldest night: -42°F; 14 December 1919
Wettest day: 2.13 in; 31 July 1997
Warmest night: 80°F; 12 July 1901
Coldest day: -25°F; 2 February 1989

Daily records by decade

New daily records set in Deer Lodge, MT by decade since the 1930s: the most record highs, 72, came in the 1940s; the most record lows, 98, in the 1960s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1890s	0	0	7
1900s	0	0	10
1910s	0	0	10
1920s	0	0	10
1930s	8	0	10
1940s	72	41	10
1950s	62	63	10
1960s	42	98	10
1970s	34	73	10
1980s	31	83	10
1990s	40	60	10
2000s	38	42	10
2010s	11	28	10
2020s	35	18	7

Records by month

Month	Highest	Lowest	Wettest day
January	62°F 26 January 2015	-40°F 14 January 2024, 13 January 2024	1.00 in 17 January 2023
February	69°F 26 February 1995, 27 February 1932	-41°F 4 February 1899	1.09 in 25 February 2002
March	73°F 20 March 2026, 19 March 2026, 31 March 2004 and 4 more	-29°F 3 March 2019	1.29 in 17 March 1992
April	84°F 25 April 1946	-8°F 8 April 1982	1.00 in 2 April 2018, 22 April 1899
May	94°F 28 May 1919	7°F 2 May 1967	2.00 in 19 May 1938
June	100°F 25 June 1919	22°F 3 June 1987, 13 June 1969	1.72 in 12 June 1921
July	108°F 22 July 1901	20°F 26 July 1997	2.13 in 31 July 1997
August	103°F 3 August 1919	19°F 10 August 2016, 29 August 1995	1.76 in 21 August 1933
September	99°F 20 September 1901	9°F 29 September 1985	1.53 in 20 September 1968
October	87°F 1 October 1992	-15°F 30 October 2006	1.50 in 2 October 1893
November	73°F 2 November 2025, 12 November 1999	-38°F 13 November 1959	1.50 in 23 November 1921
December	66°F 2 December 2021, 5 December 1939	-42°F 14 December 1919	0.90 in 7 December 2021

Streaks, months and years

Longest heat streak	12 days	15 July to 26 July 1901	A high of 90°F or above
Longest cold streak	36 days	27 December 1936 to 31 January 1937	A high of 32°F or below
Wettest month	5.90 in	May 1980
Driest month	0.00 in	December 1997	and 7 more
Wettest year	19.04 in	1980
Driest year	5.91 in	1935

Every record in words

The coldest night on record in Deer Lodge, MT: a low of -42°F on Sunday 14 December 1919.
The wettest day on record in Deer Lodge, MT: 2.13 in on Thursday 31 July 1997.
The warmest night on record in Deer Lodge, MT: a low of 80°F on Friday 12 July 1901.
The coldest day on record in Deer Lodge, MT: a high of -25°F on Thursday 2 February 1989.
The longest run of days with a high of 90°F or above in Deer Lodge, MT: 12 days, from Monday 15 July to Friday 26 July 1901.
The longest run of days with a high of 32°F or below in Deer Lodge, MT: 36 days, from Sunday 27 December 1936 to Sunday 31 January 1937.
The wettest month on record in Deer Lodge, MT: May 1980, with 5.90 in of precipitation.
The driest month on record in Deer Lodge, MT: December 1997, with 0.00 in of precipitation (shared with 7 other months).
The wettest year on record in Deer Lodge, MT: 1980, with 19.04 in of precipitation.
The driest year on record in Deer Lodge, MT: 1935, with 5.91 in of precipitation.

Deer Lodge, MT the day's answers