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 1910

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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 1910 1-Month	52.4°F (11.3°C)	53.8°F (12.1°C)	-1.4°F (-0.8°C)	32nd Coolest	Coolest since: 1907	1965
	52.4°F (11.3°C)	53.8°F (12.1°C)	-1.4°F (-0.8°C)	97th Warmest	Warmest since: 1909	1998
	Ties: 1927
Aug–Sep 1910 2-Month	56.3°F (13.5°C)	59.0°F (15.0°C)	-2.7°F (-1.5°C)	11th Coolest	Coolest since: 1907	1965
	56.3°F (13.5°C)	59.0°F (15.0°C)	-2.7°F (-1.5°C)	118th Warmest	Warmest since: 1909	2022
	Ties: 1903, 1907
Jul–Sep 1910 3-Month	60.0°F (15.6°C)	61.2°F (16.2°C)	-1.2°F (-0.6°C)	28th Coolest	Coolest since: 1907	1912
	60.0°F (15.6°C)	61.2°F (16.2°C)	-1.2°F (-0.6°C)	101st Warmest	Warmest since: 1909	2022
	Ties: 1918
Jun–Sep 1910 4-Month	60.2°F (15.7°C)	60.5°F (15.8°C)	-0.3°F (-0.1°C)	43rd Coolest	Coolest since: 1908	1993
	60.2°F (15.7°C)	60.5°F (15.8°C)	-0.3°F (-0.1°C)	86th Warmest	Warmest since: 1909	2021
	Ties: 1977, 1995
May–Sep 1910 5-Month	58.3°F (14.6°C)	58.4°F (14.7°C)	-0.1°F (-0.1°C)	53rd Coolest	Coolest since: 1909	1907
	58.3°F (14.6°C)	58.4°F (14.7°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest since: 1901	1936
	Ties: 1901, 1918, 1984, 1996
Apr–Sep 1910 6-Month	56.7°F (13.7°C)	55.5°F (13.1°C)	1.2°F (0.6°C)	98th Coolest	Coolest since: 1909	1907
	56.7°F (13.7°C)	55.5°F (13.1°C)	1.2°F (0.6°C)	31st Warmest	Warmest since: 1900	1936
	Ties: 1969
Mar–Sep 1910 7-Month	54.4°F (12.4°C)	51.7°F (10.9°C)	2.7°F (1.5°C)	118th Coolest	Coolest since: 1909	1965
	54.4°F (12.4°C)	51.7°F (10.9°C)	2.7°F (1.5°C)	11th Warmest	Warmest to Date	2012
	Ties: 2016
Feb–Sep 1910 8-Month	49.2°F (9.6°C)	47.9°F (8.8°C)	1.3°F (0.8°C)	93rd Coolest	Coolest since: 1909	1899
	49.2°F (9.6°C)	47.9°F (8.8°C)	1.3°F (0.8°C)	36th Warmest	Warmest to Date	2012, 2016
	Ties: 1941
Jan–Sep 1910 9-Month	45.7°F (7.6°C)	44.5°F (6.9°C)	1.2°F (0.7°C)	86th Coolest	Coolest since: 1909	1899
Jan–Sep 1910 9-Month	45.7°F (7.6°C)	44.5°F (6.9°C)	1.2°F (0.7°C)	43rd Warmest	Warmest since: 1900	2012
Dec 1909–Sep 1910 10-Month	42.3°F (5.7°C)	42.1°F (5.6°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1909	1950
	42.3°F (5.7°C)	42.1°F (5.6°C)	0.2°F (0.1°C)	60th Warmest	Warmest since: 1908	2012
	Ties: 1948, 1970, 2002
Nov 1909–Sep 1910 11-Month	41.3°F (5.2°C)	41.0°F (5.0°C)	0.3°F (0.2°C)	71st Coolest	Coolest since: 1909	1899
	41.3°F (5.2°C)	41.0°F (5.0°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 1908	2012
	Ties: 1930, 1935, 1966, 1973
Oct 1909–Sep 1910 12-Month	41.4°F (5.2°C)	41.2°F (5.1°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1909	1899
	41.4°F (5.2°C)	41.2°F (5.1°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1908	2012
	Ties: 1906, 1948
Apr 1909–Sep 1910 18-Month	45.6°F (7.6°C)	45.9°F (7.7°C)	-0.3°F (-0.1°C)	44th Coolest	Coolest since: 1909	1917
	45.6°F (7.6°C)	45.9°F (7.7°C)	-0.3°F (-0.1°C)	84th Warmest	Warmest since: 1906	2016
	Ties: 1915, 1957, 1973
Oct 1908–Sep 1910 24-Month	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	38th Coolest	Coolest since: 1908	1917
	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	89th Warmest	Warmest since: 1909	2016
	Ties: 1960, 1971, 1985, 2019
Oct 1907–Sep 1910 36-Month	41.3°F (5.2°C)	41.1°F (5.1°C)	0.2°F (0.1°C)	57th Coolest	Coolest since: 1909	1951
	41.3°F (5.2°C)	41.1°F (5.1°C)	0.2°F (0.1°C)	69th Warmest	Warmest since: 1902	2017
	Ties: 1921, 1927, 1943, 1948, 1954, 1984, 1995, 2020
Oct 1906–Sep 1910 48-Month	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	23rd Coolest	Coolest since: 1909	1952
	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	102nd Warmest	Warmest since: 1909	2007, 2017, 2018
	Ties: 1902, 1905, 1909, 1971
Oct 1905–Sep 1910 60-Month	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	30th Coolest	Coolest since: 1907	1952
	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	94th Warmest	Warmest since: 1909	2016
	Ties: 1905, 1906, 1971

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings