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, May 2015

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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
May 2015 1-Month	49.6°F (9.8°C)	50.2°F (10.1°C)	-0.6°F (-0.3°C)	59th Coolest	Coolest since: 2012	1907, 1927
	49.6°F (9.8°C)	50.2°F (10.1°C)	-0.6°F (-0.3°C)	70th Warmest	Warmest since: 2014	1934
	Ties: 1924, 1960, 2008
Apr–May 2015 2-Month	46.2°F (7.9°C)	45.5°F (7.5°C)	0.7°F (0.4°C)	79th Coolest	Coolest since: 2014	1975
	46.2°F (7.9°C)	45.5°F (7.5°C)	0.7°F (0.4°C)	50th Warmest	Warmest since: 2012	1934
	Ties: 1948, 2004
Mar–May 2015 3-Month	44.0°F (6.7°C)	40.1°F (4.5°C)	3.9°F (2.2°C)	121st Coolest	Coolest since: 2014	1899
	44.0°F (6.7°C)	40.1°F (4.5°C)	3.9°F (2.2°C)	8th Warmest	Warmest since: 2012	1910
	Ties: 1994, 2007
Feb–May 2015 4-Month	39.7°F (4.3°C)	35.4°F (1.9°C)	4.3°F (2.4°C)	124th Coolest	Coolest since: 2014	1899
	39.7°F (4.3°C)	35.4°F (1.9°C)	4.3°F (2.4°C)	5th Warmest	Warmest since: 2012	1992
	Ties: 1926, 1977, 2012
Jan–May 2015 5-Month	36.7°F (2.6°C)	31.7°F (-0.2°C)	5.0°F (2.8°C)	123rd Coolest	Coolest since: 2014	1899
	36.7°F (2.6°C)	31.7°F (-0.2°C)	5.0°F (2.8°C)	6th Warmest	Warmest since: 2012	1992
	Ties: 2012
Dec 2014–May 2015 6-Month	34.8°F (1.6°C)	29.9°F (-1.2°C)	4.9°F (2.8°C)	122nd Coolest	Coolest since: 2014	1917
	34.8°F (1.6°C)	29.9°F (-1.2°C)	4.9°F (2.8°C)	6th Warmest	Warmest since: 2012	1992
	Ties: 1926, 1981, 2000
Nov 2014–May 2015 7-Month	33.4°F (0.8°C)	29.8°F (-1.2°C)	3.6°F (2.0°C)	116th Coolest	Coolest since: 2014	1899
Nov 2014–May 2015 7-Month	33.4°F (0.8°C)	29.8°F (-1.2°C)	3.6°F (2.0°C)	12th Warmest	Warmest since: 2012	1992
Oct 2014–May 2015 8-Month	35.2°F (1.8°C)	31.5°F (-0.3°C)	3.7°F (2.1°C)	119th Coolest	Coolest since: 2014	1899
Oct 2014–May 2015 8-Month	35.2°F (1.8°C)	31.5°F (-0.3°C)	3.7°F (2.1°C)	9th Warmest	Warmest since: 2012	1934, 2000
Sep 2014–May 2015 9-Month	37.4°F (3.0°C)	34.0°F (1.1°C)	3.4°F (1.9°C)	120th Coolest	Coolest since: 2014	1899
	37.4°F (3.0°C)	34.0°F (1.1°C)	3.4°F (1.9°C)	8th Warmest	Warmest since: 2012	2016
	Ties: 1999
Aug 2014–May 2015 10-Month	40.2°F (4.6°C)	37.0°F (2.8°C)	3.2°F (1.8°C)	121st Coolest	Coolest since: 2014	1917
Aug 2014–May 2015 10-Month	40.2°F (4.6°C)	37.0°F (2.8°C)	3.2°F (1.8°C)	7th Warmest	Warmest since: 2012	1992, 2016
Jul 2014–May 2015 11-Month	42.7°F (5.9°C)	39.6°F (4.2°C)	3.1°F (1.7°C)	121st Coolest	Coolest since: 2014	1917
Jul 2014–May 2015 11-Month	42.7°F (5.9°C)	39.6°F (4.2°C)	3.1°F (1.7°C)	7th Warmest	Warmest since: 2012	1992, 2016
Jun 2014–May 2015 12-Month	43.8°F (6.6°C)	41.1°F (5.1°C)	2.7°F (1.5°C)	118th Coolest	Coolest since: 2014	1917
	43.8°F (6.6°C)	41.1°F (5.1°C)	2.7°F (1.5°C)	10th Warmest	Warmest since: 2012	2016
	Ties: 2007
Dec 2013–May 2015 18-Month	39.0°F (3.9°C)	37.4°F (3.0°C)	1.6°F (0.9°C)	100th Coolest	Coolest since: 2014	1917
	39.0°F (3.9°C)	37.4°F (3.0°C)	1.6°F (0.9°C)	27th Warmest	Warmest since: 2013	2016
	Ties: 1984, 1989, 2012
Jun 2013–May 2015 24-Month	42.8°F (6.0°C)	41.1°F (5.1°C)	1.7°F (0.9°C)	108th Coolest	Coolest since: 2014	1917
	42.8°F (6.0°C)	41.1°F (5.1°C)	1.7°F (0.9°C)	19th Warmest	Warmest since: 2013	2016
	Ties: 1991
Jun 2012–May 2015 36-Month	42.9°F (6.1°C)	41.1°F (5.1°C)	1.8°F (1.0°C)	112th Coolest	Coolest since: 2013	1918
	42.9°F (6.1°C)	41.1°F (5.1°C)	1.8°F (1.0°C)	14th Warmest	Warmest since: 2014	2017
	Ties: 2004, 2022
Jun 2011–May 2015 48-Month	43.3°F (6.3°C)	41.1°F (5.1°C)	2.2°F (1.2°C)	119th Coolest	Coolest since: 2014	1899, 1952
	43.3°F (6.3°C)	41.1°F (5.1°C)	2.2°F (1.2°C)	6th Warmest	Warmest since: 2008	2016
	Ties: 2001, 2006
Jun 2010–May 2015 60-Month	42.7°F (5.9°C)	41.1°F (5.1°C)	1.6°F (0.8°C)	110th Coolest	Coolest since: 2014	1952
	42.7°F (5.9°C)	41.1°F (5.1°C)	1.6°F (0.8°C)	14th Warmest	Warmest since: 2010	2016
	Ties: 2001, 2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings