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 2021

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 2021 1-Month	58.3°F (14.6°C)	53.8°F (12.1°C)	4.5°F (2.5°C)	115th Coolest	Coolest since: 2020	1965
	58.3°F (14.6°C)	53.8°F (12.1°C)	4.5°F (2.5°C)	14th Warmest	Warmest since: 2013	1998
	Ties: 2011
Aug–Sep 2021 2-Month	61.5°F (16.4°C)	58.9°F (14.9°C)	2.6°F (1.5°C)	107th Coolest	Coolest since: 2019	1965
Aug–Sep 2021 2-Month	61.5°F (16.4°C)	58.9°F (14.9°C)	2.6°F (1.5°C)	22nd Warmest	Warmest since: 2020	2022
Jul–Sep 2021 3-Month	65.2°F (18.4°C)	61.2°F (16.2°C)	4.0°F (2.2°C)	126th Coolest	Coolest since: 2020	1912
	65.2°F (18.4°C)	61.2°F (16.2°C)	4.0°F (2.2°C)	3rd Warmest	Warmest since: 2012	2022
	Ties: 1936, 2012
Jun–Sep 2021 4-Month	65.2°F (18.4°C)	60.5°F (15.8°C)	4.7°F (2.6°C)	128th Coolest	Coolest since: 2020	1993
Jun–Sep 2021 4-Month	65.2°F (18.4°C)	60.5°F (15.8°C)	4.7°F (2.6°C)	1st Warmest	Warmest to Date	2021
May–Sep 2021 5-Month	61.9°F (16.6°C)	58.4°F (14.7°C)	3.5°F (1.9°C)	127th Coolest	Coolest since: 2020	1907
	61.9°F (16.6°C)	58.4°F (14.7°C)	3.5°F (1.9°C)	2nd Warmest	Warmest since: 1988	1936
	Ties: 1988
Apr–Sep 2021 6-Month	58.3°F (14.6°C)	55.4°F (13.0°C)	2.9°F (1.6°C)	124th Coolest	Coolest since: 2020	1907
Apr–Sep 2021 6-Month	58.3°F (14.6°C)	55.4°F (13.0°C)	2.9°F (1.6°C)	5th Warmest	Warmest since: 2012	1936
Mar–Sep 2021 7-Month	55.1°F (12.8°C)	51.7°F (10.9°C)	3.4°F (1.9°C)	125th Coolest	Coolest since: 2020	1965
Mar–Sep 2021 7-Month	55.1°F (12.8°C)	51.7°F (10.9°C)	3.4°F (1.9°C)	4th Warmest	Warmest since: 2012	2012
Feb–Sep 2021 8-Month	50.0°F (10.0°C)	48.0°F (8.9°C)	2.0°F (1.1°C)	109th Coolest	Coolest since: 2020	1899
	50.0°F (10.0°C)	48.0°F (8.9°C)	2.0°F (1.1°C)	20th Warmest	Warmest since: 2017	2012, 2016
	Ties: 2005
Jan–Sep 2021 9-Month	47.4°F (8.6°C)	44.5°F (6.9°C)	2.9°F (1.7°C)	115th Coolest	Coolest since: 2020	1899
	47.4°F (8.6°C)	44.5°F (6.9°C)	2.9°F (1.7°C)	14th Warmest	Warmest since: 2016	2012
	Ties: 2000
Dec 2020–Sep 2021 10-Month	45.5°F (7.5°C)	42.1°F (5.6°C)	3.4°F (1.9°C)	117th Coolest	Coolest since: 2020	1950
Dec 2020–Sep 2021 10-Month	45.5°F (7.5°C)	42.1°F (5.6°C)	3.4°F (1.9°C)	11th Warmest	Warmest since: 2016	2012
Nov 2020–Sep 2021 11-Month	44.3°F (6.8°C)	40.9°F (4.9°C)	3.4°F (1.9°C)	122nd Coolest	Coolest since: 2020	1899
	44.3°F (6.8°C)	40.9°F (4.9°C)	3.4°F (1.9°C)	6th Warmest	Warmest since: 2016	2012
	Ties: 1931, 1988, 2015
Oct 2020–Sep 2021 12-Month	43.9°F (6.6°C)	41.1°F (5.1°C)	2.8°F (1.5°C)	118th Coolest	Coolest since: 2020	1899
	43.9°F (6.6°C)	41.1°F (5.1°C)	2.8°F (1.5°C)	10th Warmest	Warmest since: 2016	2012
	Ties: 1992, 1998, 2007
Apr 2020–Sep 2021 18-Month	48.1°F (8.9°C)	45.9°F (7.7°C)	2.2°F (1.2°C)	116th Coolest	Coolest since: 2020	1917
	48.1°F (8.9°C)	45.9°F (7.7°C)	2.2°F (1.2°C)	12th Warmest	Warmest since: 2016	2016
	Ties: 1992, 2013
Oct 2019–Sep 2021 24-Month	43.2°F (6.2°C)	41.2°F (5.1°C)	2.0°F (1.1°C)	116th Coolest	Coolest since: 2020	1917
	43.2°F (6.2°C)	41.2°F (5.1°C)	2.0°F (1.1°C)	11th Warmest	Warmest since: 2017	2016
	Ties: 1981, 1992
Oct 2018–Sep 2021 36-Month	42.3°F (5.7°C)	41.2°F (5.1°C)	1.1°F (0.6°C)	99th Coolest	Coolest since: 2020	1951
	42.3°F (5.7°C)	41.2°F (5.1°C)	1.1°F (0.6°C)	27th Warmest	Warmest since: 2018	2017
	Ties: 1991
Oct 2017–Sep 2021 48-Month	42.0°F (5.6°C)	41.1°F (5.1°C)	0.9°F (0.5°C)	92nd Coolest	Coolest since: 2020	1952
	42.0°F (5.6°C)	41.1°F (5.1°C)	0.9°F (0.5°C)	33rd Warmest	Warmest since: 2019	2007, 2017, 2018
	Ties: 1935, 1961, 1984
Oct 2016–Sep 2021 60-Month	42.3°F (5.7°C)	41.1°F (5.1°C)	1.2°F (0.6°C)	101st Coolest	Coolest since: 2014	1952
	42.3°F (5.7°C)	41.1°F (5.1°C)	1.2°F (0.6°C)	23rd Warmest	Warmest since: 2020	2016
	Ties: 1934, 1942, 2013, 2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings