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 1898

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1898 1-Month	53.5°F (11.9°C)	53.8°F (12.1°C)	-0.3°F (-0.2°C)	49th Coolest	Coolest since: 1896	1965
	53.5°F (11.9°C)	53.8°F (12.1°C)	-0.3°F (-0.2°C)	80th Warmest	Warmest since: 1897	1998
	Ties: 1918
Aug–Sep 1898 2-Month	59.8°F (15.4°C)	58.9°F (14.9°C)	0.9°F (0.5°C)	80th Coolest	Coolest since: 1896	1965
	59.8°F (15.4°C)	58.9°F (14.9°C)	0.9°F (0.5°C)	49th Warmest	Warmest since: 1897	2022
	Ties: 1906, 1935
Jul–Sep 1898 3-Month	61.2°F (16.2°C)	61.2°F (16.2°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1896	1912
	61.2°F (16.2°C)	61.2°F (16.2°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1897	2022
	Ties: 1954
Jun–Sep 1898 4-Month	60.3°F (15.7°C)	60.4°F (15.8°C)	-0.1°F (-0.1°C)	46th Coolest	Coolest since: 1896	1993
	60.3°F (15.7°C)	60.4°F (15.8°C)	-0.1°F (-0.1°C)	83rd Warmest	Warmest since: 1897	2021
	Ties: 1906, 1925, 1947, 1955, 1974
May–Sep 1898 5-Month	58.1°F (14.5°C)	58.5°F (14.7°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1896	1907
	58.1°F (14.5°C)	58.5°F (14.7°C)	-0.4°F (-0.2°C)	83rd Warmest	Warmest since: 1897	1936
	Ties: 1917, 1953
Apr–Sep 1898 6-Month	55.2°F (12.9°C)	55.4°F (13.0°C)	-0.2°F (-0.1°C)	46th Coolest	Coolest since: 1896	1907
	55.2°F (12.9°C)	55.4°F (13.0°C)	-0.2°F (-0.1°C)	83rd Warmest	Warmest since: 1897	1936
	Ties: 1967, 1973, 1983, 2002, 2004
Mar–Sep 1898 7-Month	50.3°F (10.2°C)	51.7°F (10.9°C)	-1.4°F (-0.7°C)	19th Coolest	Coolest since: 1896	1965
Mar–Sep 1898 7-Month	50.3°F (10.2°C)	51.7°F (10.9°C)	-1.4°F (-0.7°C)	110th Warmest	Warmest since: 1897	2012
Feb–Sep 1898 8-Month	47.2°F (8.4°C)	47.9°F (8.8°C)	-0.7°F (-0.4°C)	35th Coolest	Coolest since: 1897	1899
	47.2°F (8.4°C)	47.9°F (8.8°C)	-0.7°F (-0.4°C)	94th Warmest	Warmest to Date	2012, 2016
	Ties: 1924, 1943, 1947, 1948, 1978, 2002, 2011
Jan–Sep 1898 9-Month	44.1°F (6.7°C)	44.4°F (6.9°C)	-0.3°F (-0.2°C)	47th Coolest	Coolest since: 1897	1899
	44.1°F (6.7°C)	44.4°F (6.9°C)	-0.3°F (-0.2°C)	82nd Warmest	Warmest to Date	2012
	Ties: 1935, 1945, 1952, 1960, 1985, 2011
Dec 1897–Sep 1898 10-Month	41.7°F (5.4°C)	42.1°F (5.6°C)	-0.4°F (-0.2°C)	46th Coolest	Coolest since: 1896	1950
	41.7°F (5.4°C)	42.1°F (5.6°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1897	2012
	Ties: 1945, 1971
Nov 1897–Sep 1898 11-Month	39.9°F (4.4°C)	40.9°F (4.9°C)	-1.0°F (-0.5°C)	32nd Coolest	Coolest since: 1897	1899
Nov 1897–Sep 1898 11-Month	39.9°F (4.4°C)	40.9°F (4.9°C)	-1.0°F (-0.5°C)	96th Warmest	Warmest to Date	2012
Oct 1897–Sep 1898 12-Month	40.2°F (4.6°C)	41.2°F (5.1°C)	-1.0°F (-0.5°C)	34th Coolest	Coolest since: 1897	1899
	40.2°F (4.6°C)	41.2°F (5.1°C)	-1.0°F (-0.5°C)	94th Warmest	Warmest to Date	2012
	Ties: 1911, 1913
Apr 1897–Sep 1898 18-Month	45.8°F (7.7°C)	45.9°F (7.7°C)	-0.1°F (0.0°C)	53rd Coolest	Coolest since: 1897	1917
	45.8°F (7.7°C)	45.9°F (7.7°C)	-0.1°F (0.0°C)	75th Warmest	Warmest to Date	2016
	Ties: 1902, 1923, 1968, 2010
Oct 1896–Sep 1898 24-Month	40.0°F (4.4°C)	41.1°F (5.1°C)	-1.1°F (-0.7°C)	17th Coolest	Coolest since: 1897	1917
	40.0°F (4.4°C)	41.1°F (5.1°C)	-1.1°F (-0.7°C)	110th Warmest	Warmest to Date	2016
	Ties: 1957, 1965, 1966
Oct 1895–Sep 1898 36-Month	40.0°F (4.4°C)	41.2°F (5.1°C)	-1.2°F (-0.7°C)	12th Coolest	Coolest since: 1898	1951
	40.0°F (4.4°C)	41.2°F (5.1°C)	-1.2°F (-0.7°C)	114th Warmest	Warmest to Date	2017
	Ties: 1980

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings