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 1905

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Record Coolest

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1905 1-Month	56.8°F (13.8°C)	53.8°F (12.1°C)	3.0°F (1.7°C)	105th Coolest	Coolest since: 1904	1965
	56.8°F (13.8°C)	53.8°F (12.1°C)	3.0°F (1.7°C)	24th Warmest	Warmest since: 1897	1998
	Ties: 1906
Aug–Sep 1905 2-Month	61.3°F (16.3°C)	59.0°F (15.0°C)	2.3°F (1.3°C)	105th Coolest	Coolest since: 1904	1965
Aug–Sep 1905 2-Month	61.3°F (16.3°C)	59.0°F (15.0°C)	2.3°F (1.3°C)	24th Warmest	Warmest to Date	2022
Jul–Sep 1905 3-Month	62.4°F (16.9°C)	61.2°F (16.2°C)	1.2°F (0.7°C)	89th Coolest	Coolest since: 1904	1912
	62.4°F (16.9°C)	61.2°F (16.2°C)	1.2°F (0.7°C)	40th Warmest	Warmest to Date	2022
	Ties: 1917, 1976, 1997
Jun–Sep 1905 4-Month	60.6°F (15.9°C)	60.5°F (15.8°C)	0.1°F (0.1°C)	59th Coolest	Coolest since: 1904	1993
	60.6°F (15.9°C)	60.5°F (15.8°C)	0.1°F (0.1°C)	70th Warmest	Warmest since: 1900	2021
	Ties: 1971, 2008
May–Sep 1905 5-Month	57.8°F (14.3°C)	58.4°F (14.7°C)	-0.6°F (-0.4°C)	39th Coolest	Coolest since: 1904	1907
	57.8°F (14.3°C)	58.4°F (14.7°C)	-0.6°F (-0.4°C)	90th Warmest	Warmest since: 1901	1936
	Ties: 1992
Apr–Sep 1905 6-Month	55.0°F (12.8°C)	55.5°F (13.1°C)	-0.5°F (-0.3°C)	38th Coolest	Coolest since: 1904	1907
	55.0°F (12.8°C)	55.5°F (13.1°C)	-0.5°F (-0.3°C)	91st Warmest	Warmest since: 1904	1936
	Ties: 1904, 1918, 1974
Mar–Sep 1905 7-Month	52.3°F (11.3°C)	51.7°F (10.9°C)	0.6°F (0.4°C)	81st Coolest	Coolest since: 1904	1965
	52.3°F (11.3°C)	51.7°F (10.9°C)	0.6°F (0.4°C)	48th Warmest	Warmest since: 1900	2012
	Ties: 1914, 1973
Feb–Sep 1905 8-Month	47.6°F (8.7°C)	47.9°F (8.8°C)	-0.3°F (-0.1°C)	51st Coolest	Coolest since: 1904	1899
	47.6°F (8.7°C)	47.9°F (8.8°C)	-0.3°F (-0.1°C)	78th Warmest	Warmest since: 1900	2012, 2016
	Ties: 1928, 1969, 1972, 1996
Jan–Sep 1905 9-Month	43.9°F (6.6°C)	44.5°F (6.9°C)	-0.6°F (-0.3°C)	43rd Coolest	Coolest since: 1904	1899
	43.9°F (6.6°C)	44.5°F (6.9°C)	-0.6°F (-0.3°C)	86th Warmest	Warmest since: 1901	2012
	Ties: 1915
Dec 1904–Sep 1905 10-Month	41.9°F (5.5°C)	42.1°F (5.6°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 1904	1950
	41.9°F (5.5°C)	42.1°F (5.6°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1901	2012
	Ties: 1935, 1947, 1954
Nov 1904–Sep 1905 11-Month	41.5°F (5.3°C)	41.0°F (5.0°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1904	1899
	41.5°F (5.3°C)	41.0°F (5.0°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 1900	2012
	Ties: 1944, 1970, 2008
Oct 1904–Sep 1905 12-Month	41.8°F (5.4°C)	41.2°F (5.1°C)	0.6°F (0.3°C)	78th Coolest	Coolest since: 1904	1899
	41.8°F (5.4°C)	41.2°F (5.1°C)	0.6°F (0.3°C)	50th Warmest	Warmest since: 1900	2012
	Ties: 1995, 2002
Apr 1904–Sep 1905 18-Month	46.2°F (7.9°C)	45.9°F (7.7°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1904	1917
	46.2°F (7.9°C)	45.9°F (7.7°C)	0.3°F (0.2°C)	58th Warmest	Warmest since: 1901	2016
	Ties: 1933, 1942
Oct 1903–Sep 1905 24-Month	40.9°F (4.9°C)	41.1°F (5.1°C)	-0.2°F (-0.2°C)	48th Coolest	Coolest since: 1904	1917
	40.9°F (4.9°C)	41.1°F (5.1°C)	-0.2°F (-0.2°C)	79th Warmest	Warmest since: 1902	2016
	Ties: 1914, 1978
Oct 1902–Sep 1905 36-Month	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	19th Coolest	Coolest since: 1904	1951
	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	107th Warmest	Warmest since: 1903	2017
	Ties: 1901, 1924, 1949, 1953, 1957, 1971
Oct 1901–Sep 1905 48-Month	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	23rd Coolest	Coolest since: 1904	1952
	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	102nd Warmest	Warmest since: 1903	2007, 2017, 2018
	Ties: 1902, 1909, 1910, 1971
Oct 1900–Sep 1905 60-Month	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	30th Coolest	Coolest since: 1903	1952
	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	94th Warmest	Warmest since: 1904	2016
	Ties: 1906, 1910, 1971

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