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 1947

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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 1947 1-Month	53.6°F (12.0°C)	53.8°F (12.1°C)	-0.2°F (-0.1°C)	51st Coolest	Coolest since: 1946	1965
	53.6°F (12.0°C)	53.8°F (12.1°C)	-0.2°F (-0.1°C)	78th Warmest	Warmest since: 1944	1998
	Ties: 2008
Aug–Sep 1947 2-Month	59.1°F (15.1°C)	59.0°F (15.0°C)	0.1°F (0.1°C)	63rd Coolest	Coolest since: 1946	1965
	59.1°F (15.1°C)	59.0°F (15.0°C)	0.1°F (0.1°C)	66th Warmest	Warmest since: 1943	2022
	Ties: 1960
Jul–Sep 1947 3-Month	62.1°F (16.7°C)	61.2°F (16.2°C)	0.9°F (0.5°C)	81st Coolest	Coolest since: 1946	1912
	62.1°F (16.7°C)	61.2°F (16.2°C)	0.9°F (0.5°C)	48th Warmest	Warmest since: 1940	2022
	Ties: 1989
Jun–Sep 1947 4-Month	60.3°F (15.7°C)	60.5°F (15.8°C)	-0.2°F (-0.1°C)	46th Coolest	Coolest since: 1946	1993
	60.3°F (15.7°C)	60.5°F (15.8°C)	-0.2°F (-0.1°C)	83rd Warmest	Warmest since: 1941	2021
	Ties: 1898, 1906, 1925, 1955, 1974
May–Sep 1947 5-Month	58.4°F (14.7°C)	58.4°F (14.7°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1946	1907
	58.4°F (14.7°C)	58.4°F (14.7°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1941	1936
	Ties: 1935, 2008
Apr–Sep 1947 6-Month	55.5°F (13.1°C)	55.5°F (13.1°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1945	1907
	55.5°F (13.1°C)	55.5°F (13.1°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1946	1936
	Ties: 1921, 1956, 1992, 1996, 2011, 2019
Mar–Sep 1947 7-Month	51.2°F (10.7°C)	51.7°F (10.9°C)	-0.5°F (-0.2°C)	40th Coolest	Coolest since: 1945	1965
	51.2°F (10.7°C)	51.7°F (10.9°C)	-0.5°F (-0.2°C)	89th Warmest	Warmest since: 1946	2012
	Ties: 1908, 1953, 2019
Feb–Sep 1947 8-Month	47.2°F (8.4°C)	47.9°F (8.8°C)	-0.7°F (-0.4°C)	35th Coolest	Coolest since: 1945	1899
	47.2°F (8.4°C)	47.9°F (8.8°C)	-0.7°F (-0.4°C)	94th Warmest	Warmest since: 1946	2012, 2016
	Ties: 1898, 1943, 1948, 1978, 2002, 2011
Jan–Sep 1947 9-Month	44.2°F (6.8°C)	44.5°F (6.9°C)	-0.3°F (-0.1°C)	54th Coolest	Coolest since: 1945	1899
Jan–Sep 1947 9-Month	44.2°F (6.8°C)	44.5°F (6.9°C)	-0.3°F (-0.1°C)	75th Warmest	Warmest since: 1946	2012
Dec 1946–Sep 1947 10-Month	41.9°F (5.5°C)	42.1°F (5.6°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 1945	1950
	41.9°F (5.5°C)	42.1°F (5.6°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1946	2012
	Ties: 1905, 1935, 1954
Nov 1946–Sep 1947 11-Month	40.4°F (4.7°C)	41.0°F (5.0°C)	-0.6°F (-0.3°C)	42nd Coolest	Coolest since: 1945	1899
	40.4°F (4.7°C)	41.0°F (5.0°C)	-0.6°F (-0.3°C)	86th Warmest	Warmest since: 1946	2012
	Ties: 1945, 1957, 1971, 1996, 1997
Oct 1946–Sep 1947 12-Month	40.1°F (4.5°C)	41.2°F (5.1°C)	-1.1°F (-0.6°C)	30th Coolest	Coolest since: 1943	1899
	40.1°F (4.5°C)	41.2°F (5.1°C)	-1.1°F (-0.6°C)	98th Warmest	Warmest since: 1946	2012
	Ties: 1904, 1943, 1975
Apr 1946–Sep 1947 18-Month	45.3°F (7.4°C)	45.9°F (7.7°C)	-0.6°F (-0.3°C)	35th Coolest	Coolest since: 1943	1917
	45.3°F (7.4°C)	45.9°F (7.7°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1946	2016
	Ties: 1955, 1971
Oct 1945–Sep 1947 24-Month	41.3°F (5.2°C)	41.1°F (5.1°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1944	1917
	41.3°F (5.2°C)	41.1°F (5.1°C)	0.2°F (0.1°C)	59th Warmest	Warmest since: 1946	2016
	Ties: 1968, 1974, 1976
Oct 1944–Sep 1947 36-Month	41.2°F (5.1°C)	41.1°F (5.1°C)	0.1°F (0.0°C)	54th Coolest	Coolest since: 1945	1951
	41.2°F (5.1°C)	41.1°F (5.1°C)	0.1°F (0.0°C)	72nd Warmest	Warmest since: 1946	2017
	Ties: 1965, 2011
Oct 1943–Sep 1947 48-Month	41.4°F (5.2°C)	41.1°F (5.1°C)	0.3°F (0.1°C)	76th Coolest	Coolest since: 1946	1952
	41.4°F (5.2°C)	41.1°F (5.1°C)	0.3°F (0.1°C)	49th Warmest	Warmest since: 1946	2007, 2017, 2018
	Ties: 1944, 1946, 1997
Oct 1942–Sep 1947 60-Month	41.1°F (5.1°C)	41.1°F (5.1°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1932	1952
	41.1°F (5.1°C)	41.1°F (5.1°C)	0.0°F (0.0°C)	65th Warmest	Warmest since: 1946	2016
	Ties: 1957, 1958

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings