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.

Idaho

Average Temperature Rankings, September 1940

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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 1940 1-Month	56.7°F (13.7°C)	54.7°F (12.6°C)	2.0°F (1.1°C)	95th Coolest	Coolest since: 1939	1912, 1965
	56.7°F (13.7°C)	54.7°F (12.6°C)	2.0°F (1.1°C)	34th Warmest	Warmest since: 1938	1990
	Ties: 1899, 2003
Aug–Sep 1940 2-Month	61.2°F (16.2°C)	59.2°F (15.1°C)	2.0°F (1.1°C)	108th Coolest	Coolest since: 1939	1912
	61.2°F (16.2°C)	59.2°F (15.1°C)	2.0°F (1.1°C)	21st Warmest	Warmest since: 1938	2022
	Ties: 1997
Jul–Sep 1940 3-Month	63.0°F (17.2°C)	61.1°F (16.2°C)	1.9°F (1.0°C)	110th Coolest	Coolest since: 1939	1912
	63.0°F (17.2°C)	61.1°F (16.2°C)	1.9°F (1.0°C)	19th Warmest	Warmest to Date	2022
	Ties: 2006
Jun–Sep 1940 4-Month	62.6°F (17.0°C)	60.0°F (15.6°C)	2.6°F (1.4°C)	118th Coolest	Coolest since: 1939	1993
Jun–Sep 1940 4-Month	62.6°F (17.0°C)	60.0°F (15.6°C)	2.6°F (1.4°C)	11th Warmest	Warmest to Date	2021
May–Sep 1940 5-Month	60.7°F (15.9°C)	57.9°F (14.4°C)	2.8°F (1.5°C)	122nd Coolest	Coolest since: 1939	1912
May–Sep 1940 5-Month	60.7°F (15.9°C)	57.9°F (14.4°C)	2.8°F (1.5°C)	7th Warmest	Warmest to Date	2021
Apr–Sep 1940 6-Month	57.7°F (14.3°C)	55.1°F (12.8°C)	2.6°F (1.5°C)	123rd Coolest	Coolest since: 1939	1912
Apr–Sep 1940 6-Month	57.7°F (14.3°C)	55.1°F (12.8°C)	2.6°F (1.5°C)	6th Warmest	Warmest since: 1934	2021
Mar–Sep 1940 7-Month	54.7°F (12.6°C)	51.8°F (11.0°C)	2.9°F (1.6°C)	122nd Coolest	Coolest since: 1939	1912
Mar–Sep 1940 7-Month	54.7°F (12.6°C)	51.8°F (11.0°C)	2.9°F (1.6°C)	7th Warmest	Warmest since: 1934	1934, 2015
Feb–Sep 1940 8-Month	51.7°F (10.9°C)	48.7°F (9.3°C)	3.0°F (1.6°C)	124th Coolest	Coolest since: 1939	1964
Feb–Sep 1940 8-Month	51.7°F (10.9°C)	48.7°F (9.3°C)	3.0°F (1.6°C)	5th Warmest	Warmest since: 1934	1934, 2015
Jan–Sep 1940 9-Month	48.6°F (9.2°C)	45.7°F (7.6°C)	2.9°F (1.6°C)	123rd Coolest	Coolest since: 1939	1917
	48.6°F (9.2°C)	45.7°F (7.6°C)	2.9°F (1.6°C)	6th Warmest	Warmest since: 1934	1934
	Ties: 2007, 2016
Dec 1939–Sep 1940 10-Month	46.9°F (8.3°C)	43.5°F (6.4°C)	3.4°F (1.9°C)	124th Coolest	Coolest since: 1939	1917
Dec 1939–Sep 1940 10-Month	46.9°F (8.3°C)	43.5°F (6.4°C)	3.4°F (1.9°C)	4th Warmest	Warmest since: 1934	1934
Nov 1939–Sep 1940 11-Month	45.8°F (7.7°C)	42.5°F (5.8°C)	3.3°F (1.9°C)	125th Coolest	Coolest since: 1939	1917
Nov 1939–Sep 1940 11-Month	45.8°F (7.7°C)	42.5°F (5.8°C)	3.3°F (1.9°C)	3rd Warmest	Warmest since: 1934	1934
Oct 1939–Sep 1940 12-Month	45.7°F (7.6°C)	42.6°F (5.9°C)	3.1°F (1.7°C)	125th Coolest	Coolest since: 1939	1917
Oct 1939–Sep 1940 12-Month	45.7°F (7.6°C)	42.6°F (5.9°C)	3.1°F (1.7°C)	3rd Warmest	Warmest since: 1934	1934
Apr 1939–Sep 1940 18-Month	49.2°F (9.6°C)	46.7°F (8.2°C)	2.5°F (1.4°C)	124th Coolest	Coolest since: 1939	1917
Apr 1939–Sep 1940 18-Month	49.2°F (9.6°C)	46.7°F (8.2°C)	2.5°F (1.4°C)	4th Warmest	Warmest since: 1934	2015
Oct 1938–Sep 1940 24-Month	44.4°F (6.9°C)	42.6°F (5.9°C)	1.8°F (1.0°C)	116th Coolest	Coolest since: 1939	1917
	44.4°F (6.9°C)	42.6°F (5.9°C)	1.8°F (1.0°C)	11th Warmest	Warmest since: 1935	2016
	Ties: 2001, 2021
Oct 1937–Sep 1940 36-Month	44.4°F (6.9°C)	42.6°F (5.9°C)	1.8°F (1.0°C)	121st Coolest	Coolest since: 1939	1917
	44.4°F (6.9°C)	42.6°F (5.9°C)	1.8°F (1.0°C)	5th Warmest	Warmest to Date	2017
	Ties: 2005, 2014, 2022
Oct 1936–Sep 1940 48-Month	43.6°F (6.4°C)	42.6°F (5.9°C)	1.0°F (0.5°C)	103rd Coolest	Coolest since: 1939	1913, 1917, 1932
	43.6°F (6.4°C)	42.6°F (5.9°C)	1.0°F (0.5°C)	22nd Warmest	Warmest to Date	2018
	Ties: 2002
Oct 1935–Sep 1940 60-Month	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	93rd Coolest	Coolest since: 1939	1917, 1933
	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	31st Warmest	Warmest since: 1938	2016, 2017, 2018
	Ties: 1943, 1999

Citing This Page

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