Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Montana

Average Temperature Rankings, September 1901

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1901 1-Month	48.7°F (9.3°C)	53.8°F (12.1°C)	-5.1°F (-2.8°C)	6th Coolest	Coolest to Date	1965
September 1901 1-Month	48.7°F (9.3°C)	53.8°F (12.1°C)	-5.1°F (-2.8°C)	123rd Warmest	Warmest since: 1900	1998
Aug–Sep 1901 2-Month	57.2°F (14.0°C)	59.0°F (15.0°C)	-1.8°F (-1.0°C)	23rd Coolest	Coolest since: 1900	1965
	57.2°F (14.0°C)	59.0°F (15.0°C)	-1.8°F (-1.0°C)	106th Warmest	Warmest since: 1899	2022
	Ties: 1941
Jul–Sep 1901 3-Month	60.7°F (15.9°C)	61.2°F (16.2°C)	-0.5°F (-0.3°C)	40th Coolest	Coolest since: 1900	1912
	60.7°F (15.9°C)	61.2°F (16.2°C)	-0.5°F (-0.3°C)	89th Warmest	Warmest since: 1898	2022
	Ties: 1941, 1956, 1975, 1999, 2010
Jun–Sep 1901 4-Month	58.8°F (14.9°C)	60.5°F (15.8°C)	-1.7°F (-0.9°C)	14th Coolest	Coolest since: 1895	1993
	58.8°F (14.9°C)	60.5°F (15.8°C)	-1.7°F (-0.9°C)	115th Warmest	Warmest since: 1900	2021
	Ties: 1927, 1944
May–Sep 1901 5-Month	58.3°F (14.6°C)	58.4°F (14.7°C)	-0.1°F (-0.1°C)	53rd Coolest	Coolest since: 1899	1907
	58.3°F (14.6°C)	58.4°F (14.7°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest since: 1900	1936
	Ties: 1910, 1918, 1984, 1996
Apr–Sep 1901 6-Month	55.4°F (13.0°C)	55.5°F (13.1°C)	-0.1°F (-0.1°C)	56th Coolest	Coolest since: 1899	1907
	55.4°F (13.0°C)	55.5°F (13.1°C)	-0.1°F (-0.1°C)	73rd Warmest	Warmest since: 1900	1936
	Ties: 1984
Mar–Sep 1901 7-Month	51.9°F (11.1°C)	51.7°F (10.9°C)	0.2°F (0.2°C)	61st Coolest	Coolest since: 1899	1965
	51.9°F (11.1°C)	51.7°F (10.9°C)	0.2°F (0.2°C)	68th Warmest	Warmest since: 1900	2012
	Ties: 1921, 1952, 1960
Feb–Sep 1901 8-Month	47.5°F (8.6°C)	47.9°F (8.8°C)	-0.4°F (-0.2°C)	47th Coolest	Coolest since: 1899	1899
	47.5°F (8.6°C)	47.9°F (8.8°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1900	2012, 2016
	Ties: 1908, 1936, 2014
Jan–Sep 1901 9-Month	44.3°F (6.8°C)	44.5°F (6.9°C)	-0.2°F (-0.1°C)	55th Coolest	Coolest since: 1899	1899
	44.3°F (6.8°C)	44.5°F (6.9°C)	-0.2°F (-0.1°C)	74th Warmest	Warmest since: 1900	2012
	Ties: 1923, 1932, 1944, 1970, 1971, 2018
Dec 1900–Sep 1901 10-Month	42.6°F (5.9°C)	42.1°F (5.6°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1899	1950
	42.6°F (5.9°C)	42.1°F (5.6°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 1900	2012
	Ties: 1906, 1925, 1930
Nov 1900–Sep 1901 11-Month	41.1°F (5.1°C)	41.0°F (5.0°C)	0.1°F (0.1°C)	60th Coolest	Coolest since: 1899	1899
	41.1°F (5.1°C)	41.0°F (5.0°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 1900	2012
	Ties: 1933, 1942
Oct 1900–Sep 1901 12-Month	41.3°F (5.2°C)	41.2°F (5.1°C)	0.1°F (0.1°C)	64th Coolest	Coolest since: 1899	1899
Oct 1900–Sep 1901 12-Month	41.3°F (5.2°C)	41.2°F (5.1°C)	0.1°F (0.1°C)	64th Warmest	Warmest since: 1900	2012
Apr 1900–Sep 1901 18-Month	46.6°F (8.1°C)	45.9°F (7.7°C)	0.7°F (0.4°C)	84th Coolest	Coolest since: 1900	1917
	46.6°F (8.1°C)	45.9°F (7.7°C)	0.7°F (0.4°C)	44th Warmest	Warmest to Date	2016
	Ties: 1980
Oct 1899–Sep 1901 24-Month	42.1°F (5.6°C)	41.1°F (5.1°C)	1.0°F (0.5°C)	90th Coolest	Coolest since: 1900	1917
	42.1°F (5.6°C)	41.1°F (5.1°C)	1.0°F (0.5°C)	37th Warmest	Warmest to Date	2016
	Ties: 1954, 1984
Oct 1898–Sep 1901 36-Month	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	19th Coolest	Coolest since: 1900	1951
	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	107th Warmest	Warmest to Date	2017
	Ties: 1905, 1924, 1949, 1953, 1957, 1971
Oct 1897–Sep 1901 48-Month	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	18th Coolest	Coolest since: 1900	1952
	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	107th Warmest	Warmest to Date	2007, 2017, 2018
	Ties: 1929
Oct 1896–Sep 1901 60-Month	40.2°F (4.6°C)	41.1°F (5.1°C)	-0.9°F (-0.5°C)	12th Coolest	Coolest since: 1900	1952
	40.2°F (4.6°C)	41.1°F (5.1°C)	-0.9°F (-0.5°C)	112th Warmest	Warmest to Date	2016
	Ties: 1903, 1919, 1950, 1954

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 24, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings