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 1931

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1931 1-Month	55.6°F (13.1°C)	53.8°F (12.1°C)	1.8°F (1.0°C)	90th Coolest	Coolest since: 1930	1965
	55.6°F (13.1°C)	53.8°F (12.1°C)	1.8°F (1.0°C)	39th Warmest	Warmest since: 1923	1998
	Ties: 1991
Aug–Sep 1931 2-Month	60.6°F (15.9°C)	58.9°F (14.9°C)	1.7°F (1.0°C)	98th Coolest	Coolest since: 1929	1965
	60.6°F (15.9°C)	58.9°F (14.9°C)	1.7°F (1.0°C)	31st Warmest	Warmest since: 1930	2022
	Ties: 1909, 1919, 1948, 1952, 1953, 1966, 1971, 2000
Jul–Sep 1931 3-Month	62.8°F (17.1°C)	61.2°F (16.2°C)	1.6°F (0.9°C)	98th Coolest	Coolest since: 1929	1912
	62.8°F (17.1°C)	61.2°F (16.2°C)	1.6°F (0.9°C)	31st Warmest	Warmest since: 1930	2022
	Ties: 1981
Jun–Sep 1931 4-Month	62.9°F (17.2°C)	60.4°F (15.8°C)	2.5°F (1.4°C)	113th Coolest	Coolest since: 1930	1993
	62.9°F (17.2°C)	60.4°F (15.8°C)	2.5°F (1.4°C)	16th Warmest	Warmest since: 1919	2021
	Ties: 1933
May–Sep 1931 5-Month	60.7°F (15.9°C)	58.4°F (14.7°C)	2.3°F (1.2°C)	114th Coolest	Coolest since: 1930	1907
	60.7°F (15.9°C)	58.4°F (14.7°C)	2.3°F (1.2°C)	15th Warmest	Warmest since: 1919	1936
	Ties: 2003
Apr–Sep 1931 6-Month	57.6°F (14.2°C)	55.4°F (13.0°C)	2.2°F (1.2°C)	114th Coolest	Coolest since: 1929	1907
	57.6°F (14.2°C)	55.4°F (13.0°C)	2.2°F (1.2°C)	15th Warmest	Warmest since: 1930	1936
	Ties: 1934, 1987, 2015
Mar–Sep 1931 7-Month	53.7°F (12.1°C)	51.7°F (10.9°C)	2.0°F (1.2°C)	110th Coolest	Coolest since: 1930	1965
Mar–Sep 1931 7-Month	53.7°F (12.1°C)	51.7°F (10.9°C)	2.0°F (1.2°C)	19th Warmest	Warmest since: 1910	2012
Feb–Sep 1931 8-Month	50.8°F (10.4°C)	47.9°F (8.8°C)	2.9°F (1.6°C)	119th Coolest	Coolest since: 1930	1899
Feb–Sep 1931 8-Month	50.8°F (10.4°C)	47.9°F (8.8°C)	2.9°F (1.6°C)	10th Warmest	Warmest to Date	2012, 2016
Jan–Sep 1931 9-Month	48.1°F (8.9°C)	44.5°F (6.9°C)	3.6°F (2.0°C)	123rd Coolest	Coolest since: 1930	1899
	48.1°F (8.9°C)	44.5°F (6.9°C)	3.6°F (2.0°C)	6th Warmest	Warmest to Date	2012
	Ties: 1987
Dec 1930–Sep 1931 10-Month	45.8°F (7.7°C)	42.1°F (5.6°C)	3.7°F (2.1°C)	123rd Coolest	Coolest since: 1930	1950
	45.8°F (7.7°C)	42.1°F (5.6°C)	3.7°F (2.1°C)	5th Warmest	Warmest to Date	2012
	Ties: 1987
Nov 1930–Sep 1931 11-Month	44.3°F (6.8°C)	41.0°F (5.0°C)	3.3°F (1.8°C)	122nd Coolest	Coolest since: 1930	1899
	44.3°F (6.8°C)	41.0°F (5.0°C)	3.3°F (1.8°C)	6th Warmest	Warmest to Date	2012
	Ties: 1988, 2015, 2021
Oct 1930–Sep 1931 12-Month	43.8°F (6.6°C)	41.2°F (5.1°C)	2.6°F (1.5°C)	114th Coolest	Coolest since: 1930	1899
Oct 1930–Sep 1931 12-Month	43.8°F (6.6°C)	41.2°F (5.1°C)	2.6°F (1.5°C)	14th Warmest	Warmest to Date	2012
Apr 1930–Sep 1931 18-Month	48.4°F (9.1°C)	45.9°F (7.7°C)	2.5°F (1.4°C)	123rd Coolest	Coolest since: 1930	1917
	48.4°F (9.1°C)	45.9°F (7.7°C)	2.5°F (1.4°C)	5th Warmest	Warmest to Date	2016
	Ties: 1934, 2006, 2015, 2022
Oct 1929–Sep 1931 24-Month	42.6°F (5.9°C)	41.1°F (5.1°C)	1.5°F (0.8°C)	102nd Coolest	Coolest since: 1930	1917
	42.6°F (5.9°C)	41.1°F (5.1°C)	1.5°F (0.8°C)	25th Warmest	Warmest to Date	2016
	Ties: 1964, 2003
Oct 1928–Sep 1931 36-Month	41.4°F (5.2°C)	41.1°F (5.1°C)	0.3°F (0.1°C)	71st Coolest	Coolest since: 1930	1951
	41.4°F (5.2°C)	41.1°F (5.1°C)	0.3°F (0.1°C)	55th Warmest	Warmest since: 1926	2017
	Ties: 1959, 1960, 1962, 1976, 1985
Oct 1927–Sep 1931 48-Month	41.0°F (5.0°C)	41.0°F (5.0°C)	0.0°F (0.0°C)	49th Coolest	Coolest since: 1930	1952
	41.0°F (5.0°C)	41.0°F (5.0°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1927	2007, 2017, 2018
	Ties: 1911, 1969, 1981
Oct 1926–Sep 1931 60-Month	40.8°F (4.9°C)	41.1°F (5.1°C)	-0.3°F (-0.2°C)	34th Coolest	Coolest since: 1930	1952
	40.8°F (4.9°C)	41.1°F (5.1°C)	-0.3°F (-0.2°C)	90th Warmest	Warmest since: 1928	2016
	Ties: 1908, 1909, 1923, 1955, 1974, 1982

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings