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 1930

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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 1930 1-Month	54.7°F (12.6°C)	53.8°F (12.1°C)	0.9°F (0.5°C)	71st Coolest	Coolest since: 1929	1965
	54.7°F (12.6°C)	53.8°F (12.1°C)	0.9°F (0.5°C)	58th Warmest	Warmest since: 1923	1998
	Ties: 1943, 1980
Aug–Sep 1930 2-Month	61.1°F (16.2°C)	59.0°F (15.0°C)	2.1°F (1.2°C)	104th Coolest	Coolest since: 1929	1965
	61.1°F (16.2°C)	59.0°F (15.0°C)	2.1°F (1.2°C)	25th Warmest	Warmest since: 1922	2022
	Ties: 1897
Jul–Sep 1930 3-Month	63.6°F (17.6°C)	61.2°F (16.2°C)	2.4°F (1.4°C)	112th Coolest	Coolest since: 1929	1912
	63.6°F (17.6°C)	61.2°F (16.2°C)	2.4°F (1.4°C)	17th Warmest	Warmest to Date	2022
	Ties: 1938, 1963
Jun–Sep 1930 4-Month	62.4°F (16.9°C)	60.5°F (15.8°C)	1.9°F (1.1°C)	107th Coolest	Coolest since: 1929	1993
	62.4°F (16.9°C)	60.5°F (15.8°C)	1.9°F (1.1°C)	22nd Warmest	Warmest since: 1922	2021
	Ties: 1961
May–Sep 1930 5-Month	59.8°F (15.4°C)	58.4°F (14.7°C)	1.4°F (0.7°C)	101st Coolest	Coolest since: 1929	1907
	59.8°F (15.4°C)	58.4°F (14.7°C)	1.4°F (0.7°C)	28th Warmest	Warmest since: 1922	1936
	Ties: 1997, 2000, 2018
Apr–Sep 1930 6-Month	57.8°F (14.3°C)	55.5°F (13.1°C)	2.3°F (1.2°C)	116th Coolest	Coolest since: 1929	1907
	57.8°F (14.3°C)	55.5°F (13.1°C)	2.3°F (1.2°C)	13th Warmest	Warmest since: 1919	1936
	Ties: 1994
Mar–Sep 1930 7-Month	53.6°F (12.0°C)	51.7°F (10.9°C)	1.9°F (1.1°C)	109th Coolest	Coolest since: 1929	1965
	53.6°F (12.0°C)	51.7°F (10.9°C)	1.9°F (1.1°C)	20th Warmest	Warmest since: 1910	2012
	Ties: 1900, 1990, 2022
Feb–Sep 1930 8-Month	50.7°F (10.4°C)	47.9°F (8.8°C)	2.8°F (1.6°C)	118th Coolest	Coolest since: 1929	1899
Feb–Sep 1930 8-Month	50.7°F (10.4°C)	47.9°F (8.8°C)	2.8°F (1.6°C)	11th Warmest	Warmest to Date	2012, 2016
Jan–Sep 1930 9-Month	45.2°F (7.3°C)	44.5°F (6.9°C)	0.7°F (0.4°C)	79th Coolest	Coolest since: 1929	1899
	45.2°F (7.3°C)	44.5°F (6.9°C)	0.7°F (0.4°C)	50th Warmest	Warmest since: 1926	2012
	Ties: 1997
Dec 1929–Sep 1930 10-Month	42.6°F (5.9°C)	42.1°F (5.6°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1929	1950
	42.6°F (5.9°C)	42.1°F (5.6°C)	0.5°F (0.3°C)	50th Warmest	Warmest since: 1926	2012
	Ties: 1901, 1906, 1925
Nov 1929–Sep 1930 11-Month	41.3°F (5.2°C)	41.0°F (5.0°C)	0.3°F (0.2°C)	71st Coolest	Coolest since: 1929	1899
	41.3°F (5.2°C)	41.0°F (5.0°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 1926	2012
	Ties: 1910, 1935, 1966, 1973
Oct 1929–Sep 1930 12-Month	41.5°F (5.3°C)	41.2°F (5.1°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1929	1899
	41.5°F (5.3°C)	41.2°F (5.1°C)	0.3°F (0.2°C)	58th Warmest	Warmest since: 1926	2012
	Ties: 1974, 1984
Apr 1929–Sep 1930 18-Month	45.9°F (7.7°C)	45.9°F (7.7°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1929	1917
	45.9°F (7.7°C)	45.9°F (7.7°C)	0.0°F (0.0°C)	70th Warmest	Warmest since: 1926	2016
	Ties: 1906, 1959, 1986
Oct 1928–Sep 1930 24-Month	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	29th Coolest	Coolest since: 1929	1917
	40.3°F (4.6°C)	41.1°F (5.1°C)	-0.8°F (-0.5°C)	98th Warmest	Warmest since: 1927	2016
	Ties: 1908
Oct 1927–Sep 1930 36-Month	40.1°F (4.5°C)	41.1°F (5.1°C)	-1.0°F (-0.6°C)	14th Coolest	Coolest since: 1929	1951
	40.1°F (4.5°C)	41.1°F (5.1°C)	-1.0°F (-0.6°C)	112th Warmest	Warmest since: 1928	2017
	Ties: 1904, 1979
Oct 1926–Sep 1930 48-Month	40.1°F (4.5°C)	41.1°F (5.1°C)	-1.0°F (-0.6°C)	13th Coolest	Coolest since: 1920	1952
	40.1°F (4.5°C)	41.1°F (5.1°C)	-1.0°F (-0.6°C)	112th Warmest	Warmest since: 1929	2007, 2017, 2018
	Ties: 1915, 1919
Oct 1925–Sep 1930 60-Month	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	25th Coolest	Coolest since: 1924	1952
	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	99th Warmest	Warmest since: 1929	2016
	Ties: 1911

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings