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, May 1909

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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
May 1909 1-Month	47.2°F (8.4°C)	50.2°F (10.1°C)	-3.0°F (-1.7°C)	16th Coolest	Coolest since: 1907	1907, 1927
	47.2°F (8.4°C)	50.2°F (10.1°C)	-3.0°F (-1.7°C)	113th Warmest	Warmest since: 1908	1934
	Ties: 1968
Apr–May 1909 2-Month	40.4°F (4.7°C)	45.5°F (7.5°C)	-5.1°F (-2.8°C)	2nd Coolest	Coolest to Date	1975
Apr–May 1909 2-Month	40.4°F (4.7°C)	45.5°F (7.5°C)	-5.1°F (-2.8°C)	127th Warmest	Warmest since: 1908	1934
Mar–May 1909 3-Month	36.7°F (2.6°C)	40.1°F (4.5°C)	-3.4°F (-1.9°C)	15th Coolest	Coolest since: 1899	1899
Mar–May 1909 3-Month	36.7°F (2.6°C)	40.1°F (4.5°C)	-3.4°F (-1.9°C)	114th Warmest	Warmest since: 1908	1910
Feb–May 1909 4-Month	32.8°F (0.4°C)	35.4°F (1.9°C)	-2.6°F (-1.5°C)	19th Coolest	Coolest since: 1904	1899
	32.8°F (0.4°C)	35.4°F (1.9°C)	-2.6°F (-1.5°C)	110th Warmest	Warmest since: 1908	1992
	Ties: 2002
Jan–May 1909 5-Month	28.4°F (-2.0°C)	31.7°F (-0.2°C)	-3.3°F (-1.8°C)	16th Coolest	Coolest since: 1907	1899
	28.4°F (-2.0°C)	31.7°F (-0.2°C)	-3.3°F (-1.8°C)	113th Warmest	Warmest since: 1908	1992
	Ties: 1949
Dec 1908–May 1909 6-Month	27.4°F (-2.6°C)	29.9°F (-1.2°C)	-2.5°F (-1.4°C)	17th Coolest	Coolest since: 1907	1917
	27.4°F (-2.6°C)	29.9°F (-1.2°C)	-2.5°F (-1.4°C)	111th Warmest	Warmest since: 1908	1992
	Ties: 1978
Nov 1908–May 1909 7-Month	28.1°F (-2.2°C)	29.8°F (-1.2°C)	-1.7°F (-1.0°C)	25th Coolest	Coolest since: 1907	1899
	28.1°F (-2.2°C)	29.8°F (-1.2°C)	-1.7°F (-1.0°C)	103rd Warmest	Warmest since: 1908	1992
	Ties: 1962, 1997
Oct 1908–May 1909 8-Month	29.6°F (-1.3°C)	31.5°F (-0.3°C)	-1.9°F (-1.0°C)	22nd Coolest	Coolest since: 1907	1899
	29.6°F (-1.3°C)	31.5°F (-0.3°C)	-1.9°F (-1.0°C)	106th Warmest	Warmest since: 1908	1934, 2000
	Ties: 1982
Sep 1908–May 1909 9-Month	32.5°F (0.3°C)	34.0°F (1.1°C)	-1.5°F (-0.8°C)	29th Coolest	Coolest since: 1907	1899
Sep 1908–May 1909 9-Month	32.5°F (0.3°C)	34.0°F (1.1°C)	-1.5°F (-0.8°C)	99th Warmest	Warmest since: 1908	2016
Aug 1908–May 1909 10-Month	35.4°F (1.9°C)	37.0°F (2.8°C)	-1.6°F (-0.9°C)	24th Coolest	Coolest since: 1907	1917
	35.4°F (1.9°C)	37.0°F (2.8°C)	-1.6°F (-0.9°C)	104th Warmest	Warmest since: 1908	1992, 2016
	Ties: 1896
Jul 1908–May 1909 11-Month	38.3°F (3.5°C)	39.6°F (4.2°C)	-1.3°F (-0.7°C)	25th Coolest	Coolest since: 1907	1917
	38.3°F (3.5°C)	39.6°F (4.2°C)	-1.3°F (-0.7°C)	103rd Warmest	Warmest since: 1908	1992, 2016
	Ties: 1993
Jun 1908–May 1909 12-Month	39.7°F (4.3°C)	41.1°F (5.1°C)	-1.4°F (-0.8°C)	23rd Coolest	Coolest since: 1907	1917
	39.7°F (4.3°C)	41.1°F (5.1°C)	-1.4°F (-0.8°C)	105th Warmest	Warmest since: 1908	2016
	Ties: 1904
Dec 1907–May 1909 18-Month	36.9°F (2.7°C)	37.4°F (3.0°C)	-0.5°F (-0.3°C)	44th Coolest	Coolest since: 1908	1917
	36.9°F (2.7°C)	37.4°F (3.0°C)	-0.5°F (-0.3°C)	83rd Warmest	Warmest since: 1906	2016
	Ties: 1910, 1922, 1985
Jun 1907–May 1909 24-Month	40.6°F (4.8°C)	41.1°F (5.1°C)	-0.5°F (-0.3°C)	39th Coolest	Coolest since: 1908	1917
	40.6°F (4.8°C)	41.1°F (5.1°C)	-0.5°F (-0.3°C)	88th Warmest	Warmest since: 1906	2016
	Ties: 1905, 1948
Jun 1906–May 1909 36-Month	40.2°F (4.6°C)	41.1°F (5.1°C)	-0.9°F (-0.5°C)	20th Coolest	Coolest since: 1905	1918
	40.2°F (4.6°C)	41.1°F (5.1°C)	-0.9°F (-0.5°C)	106th Warmest	Warmest since: 1908	2017
	Ties: 1949, 1957, 1967
Jun 1905–May 1909 48-Month	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	23rd Coolest	Coolest since: 1907	1899, 1952
	40.5°F (4.7°C)	41.1°F (5.1°C)	-0.6°F (-0.4°C)	102nd Warmest	Warmest since: 1908	2016
	Ties: 1904, 1907, 1910, 1979
Jun 1904–May 1909 60-Month	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	32nd Coolest	Coolest since: 1908	1952
	40.7°F (4.8°C)	41.1°F (5.1°C)	-0.4°F (-0.3°C)	92nd Warmest	Warmest since: 1908	2016
	Ties: 1905, 1908, 1910, 1924, 1949, 1970, 1975, 1997

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings