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 1991

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1991 1-Month	57.0°F (13.9°C)	54.7°F (12.6°C)	2.3°F (1.3°C)	101st Coolest	Coolest since: 1989	1912, 1965
	57.0°F (13.9°C)	54.7°F (12.6°C)	2.3°F (1.3°C)	28th Warmest	Warmest since: 1990	1990
	Ties: 1917, 1918, 1949
Aug–Sep 1991 2-Month	62.0°F (16.7°C)	59.1°F (15.1°C)	2.9°F (1.6°C)	117th Coolest	Coolest since: 1989	1912
	62.0°F (16.7°C)	59.1°F (15.1°C)	2.9°F (1.6°C)	12th Warmest	Warmest since: 1990	2022
	Ties: 1963
Jul–Sep 1991 3-Month	63.5°F (17.5°C)	61.2°F (16.2°C)	2.3°F (1.3°C)	114th Coolest	Coolest since: 1989	1912
Jul–Sep 1991 3-Month	63.5°F (17.5°C)	61.2°F (16.2°C)	2.3°F (1.3°C)	15th Warmest	Warmest since: 1990	2022
Jun–Sep 1991 4-Month	61.3°F (16.3°C)	60.0°F (15.6°C)	1.3°F (0.7°C)	99th Coolest	Coolest since: 1989	1993
	61.3°F (16.3°C)	60.0°F (15.6°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1990	2021
	Ties: 1898, 1918, 1979, 2016
May–Sep 1991 5-Month	58.3°F (14.6°C)	57.8°F (14.3°C)	0.5°F (0.3°C)	78th Coolest	Coolest since: 1989	1912
	58.3°F (14.6°C)	57.8°F (14.3°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1990	2021
	Ties: 1924, 1928, 1989
Apr–Sep 1991 6-Month	55.2°F (12.9°C)	55.1°F (12.8°C)	0.1°F (0.1°C)	63rd Coolest	Coolest since: 1986	1912
	55.2°F (12.9°C)	55.1°F (12.8°C)	0.1°F (0.1°C)	66th Warmest	Warmest since: 1990	2021
	Ties: 1918, 1963
Mar–Sep 1991 7-Month	52.0°F (11.1°C)	51.8°F (11.0°C)	0.2°F (0.1°C)	62nd Coolest	Coolest since: 1985	1912
	52.0°F (11.1°C)	51.8°F (11.0°C)	0.2°F (0.1°C)	67th Warmest	Warmest since: 1990	1934, 2015
	Ties: 1956
Feb–Sep 1991 8-Month	49.8°F (9.9°C)	48.6°F (9.2°C)	1.2°F (0.7°C)	96th Coolest	Coolest since: 1989	1964
	49.8°F (9.9°C)	48.6°F (9.2°C)	1.2°F (0.7°C)	33rd Warmest	Warmest since: 1990	1934, 2015
	Ties: 1931, 1981
Jan–Sep 1991 9-Month	46.6°F (8.1°C)	45.7°F (7.6°C)	0.9°F (0.5°C)	90th Coolest	Coolest since: 1989	1917
	46.6°F (8.1°C)	45.7°F (7.6°C)	0.9°F (0.5°C)	39th Warmest	Warmest since: 1990	1934
	Ties: 1941, 1966
Dec 1990–Sep 1991 10-Month	43.4°F (6.3°C)	43.5°F (6.4°C)	-0.1°F (-0.1°C)	49th Coolest	Coolest since: 1989	1917
	43.4°F (6.3°C)	43.5°F (6.4°C)	-0.1°F (-0.1°C)	79th Warmest	Warmest since: 1990	1934
	Ties: 1907, 1915, 1924, 1956, 2011
Nov 1990–Sep 1991 11-Month	42.5°F (5.8°C)	42.5°F (5.8°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1989	1917
	42.5°F (5.8°C)	42.5°F (5.8°C)	0.0°F (0.0°C)	70th Warmest	Warmest since: 1990	1934
	Ties: 1915
Oct 1990–Sep 1991 12-Month	42.5°F (5.8°C)	42.6°F (5.9°C)	-0.1°F (-0.1°C)	50th Coolest	Coolest since: 1986	1917
	42.5°F (5.8°C)	42.6°F (5.9°C)	-0.1°F (-0.1°C)	78th Warmest	Warmest since: 1990	1934
	Ties: 1897, 1907, 1924
Apr 1990–Sep 1991 18-Month	47.4°F (8.6°C)	46.7°F (8.2°C)	0.7°F (0.4°C)	87th Coolest	Coolest since: 1986	1917
	47.4°F (8.6°C)	46.7°F (8.2°C)	0.7°F (0.4°C)	41st Warmest	Warmest since: 1990	2015
	Ties: 1898, 1905, 1939, 1978, 1994, 1999, 2008, 2009
Oct 1989–Sep 1991 24-Month	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	95th Coolest	Coolest since: 1989	1917
	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	32nd Warmest	Warmest since: 1990	2016
	Ties: 1926, 1959, 1989, 1999, 2008, 2020
Oct 1988–Sep 1991 36-Month	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	91st Coolest	Coolest since: 1987	1917
	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	35th Warmest	Warmest since: 1990	2017
	Ties: 1967
Oct 1987–Sep 1991 48-Month	43.5°F (6.4°C)	42.5°F (5.8°C)	1.0°F (0.6°C)	101st Coolest	Coolest since: 1989	1913, 1917, 1932
	43.5°F (6.4°C)	42.5°F (5.8°C)	1.0°F (0.6°C)	24th Warmest	Warmest since: 1990	2018
	Ties: 1937, 1942, 1997, 1999, 2013
Oct 1986–Sep 1991 60-Month	43.7°F (6.5°C)	42.6°F (5.9°C)	1.1°F (0.6°C)	104th Coolest	Coolest since: 1990	1917, 1933
	43.7°F (6.5°C)	42.6°F (5.9°C)	1.1°F (0.6°C)	20th Warmest	Warmest since: 1942	2016, 2017, 2018
	Ties: 1938, 1942, 1998, 2014

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings