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 1999

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1999 1-Month	54.2°F (12.3°C)	54.7°F (12.6°C)	-0.5°F (-0.3°C)	43rd Coolest	Coolest since: 1996	1912, 1965
	54.2°F (12.3°C)	54.7°F (12.6°C)	-0.5°F (-0.3°C)	86th Warmest	Warmest since: 1998	1990
	Ties: 1992
Aug–Sep 1999 2-Month	59.8°F (15.4°C)	59.2°F (15.1°C)	0.6°F (0.3°C)	76th Coolest	Coolest since: 1996	1912
	59.8°F (15.4°C)	59.2°F (15.1°C)	0.6°F (0.3°C)	53rd Warmest	Warmest since: 1998	2022
	Ties: 1987
Jul–Sep 1999 3-Month	61.1°F (16.2°C)	61.1°F (16.2°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1995	1912
	61.1°F (16.2°C)	61.1°F (16.2°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1998	2022
	Ties: 1897, 2010
Jun–Sep 1999 4-Month	59.7°F (15.4°C)	60.0°F (15.6°C)	-0.3°F (-0.2°C)	42nd Coolest	Coolest since: 1995	1993
	59.7°F (15.4°C)	60.0°F (15.6°C)	-0.3°F (-0.2°C)	87th Warmest	Warmest since: 1998	2021
	Ties: 1932, 2010
May–Sep 1999 5-Month	57.1°F (13.9°C)	57.9°F (14.4°C)	-0.8°F (-0.5°C)	26th Coolest	Coolest since: 1995	1912
	57.1°F (13.9°C)	57.9°F (14.4°C)	-0.8°F (-0.5°C)	103rd Warmest	Warmest since: 1998	2021
	Ties: 1953, 1984, 1995
Apr–Sep 1999 6-Month	54.0°F (12.2°C)	55.1°F (12.8°C)	-1.1°F (-0.6°C)	24th Coolest	Coolest since: 1993	1912
	54.0°F (12.2°C)	55.1°F (12.8°C)	-1.1°F (-0.6°C)	105th Warmest	Warmest since: 1998	2021
	Ties: 1895, 1970, 1983, 1984
Mar–Sep 1999 7-Month	51.1°F (10.6°C)	51.8°F (11.0°C)	-0.7°F (-0.4°C)	31st Coolest	Coolest since: 1993	1912
	51.1°F (10.6°C)	51.8°F (11.0°C)	-0.7°F (-0.4°C)	98th Warmest	Warmest since: 1998	1934, 2015
	Ties: 1962, 1968
Feb–Sep 1999 8-Month	48.1°F (8.9°C)	48.7°F (9.3°C)	-0.6°F (-0.4°C)	39th Coolest	Coolest since: 1993	1964
Feb–Sep 1999 8-Month	48.1°F (8.9°C)	48.7°F (9.3°C)	-0.6°F (-0.4°C)	90th Warmest	Warmest since: 1998	1934, 2015
Jan–Sep 1999 9-Month	45.8°F (7.7°C)	45.7°F (7.6°C)	0.1°F (0.1°C)	57th Coolest	Coolest since: 1993	1917
	45.8°F (7.7°C)	45.7°F (7.6°C)	0.1°F (0.1°C)	72nd Warmest	Warmest since: 1998	1934
	Ties: 1921, 1977
Dec 1998–Sep 1999 10-Month	43.5°F (6.4°C)	43.5°F (6.4°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1993	1917
	43.5°F (6.4°C)	43.5°F (6.4°C)	0.0°F (0.0°C)	75th Warmest	Warmest since: 1998	1934
	Ties: 1896, 1904, 1935, 1951, 1956, 2002, 2010, 2011
Nov 1998–Sep 1999 11-Month	42.6°F (5.9°C)	42.5°F (5.8°C)	0.1°F (0.1°C)	69th Coolest	Coolest since: 1995	1917
	42.6°F (5.9°C)	42.5°F (5.8°C)	0.1°F (0.1°C)	59th Warmest	Warmest since: 1998	1934
	Ties: 1901, 1921, 1924, 1946, 1951, 1969, 1980, 1995, 2010
Oct 1998–Sep 1999 12-Month	42.7°F (5.9°C)	42.6°F (5.9°C)	0.1°F (0.0°C)	59th Coolest	Coolest since: 1995	1917
	42.7°F (5.9°C)	42.6°F (5.9°C)	0.1°F (0.0°C)	69th Warmest	Warmest since: 1998	1934
	Ties: 1896, 1902, 1915, 1928, 1970, 1983, 2011
Apr 1998–Sep 1999 18-Month	47.4°F (8.6°C)	46.7°F (8.2°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1997	1917
	47.4°F (8.6°C)	46.7°F (8.2°C)	0.7°F (0.4°C)	42nd Warmest	Warmest since: 1998	2015
	Ties: 1898, 1905, 1939, 1991, 1994, 2008, 2009
Oct 1997–Sep 1999 24-Month	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	95th Coolest	Coolest since: 1997	1917
	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	32nd Warmest	Warmest since: 1998	2016
	Ties: 1926, 1959, 1989, 1991, 2008, 2020
Oct 1996–Sep 1999 36-Month	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1997	1917
Oct 1996–Sep 1999 36-Month	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	33rd Warmest	Warmest since: 1998	2017
Oct 1995–Sep 1999 48-Month	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	101st Coolest	Coolest since: 1998	1913, 1917, 1932
	43.5°F (6.4°C)	42.6°F (5.9°C)	0.9°F (0.5°C)	24th Warmest	Warmest since: 1997	2018
	Ties: 1937, 1942, 1991, 1997, 2013
Oct 1994–Sep 1999 60-Month	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	93rd Coolest	Coolest since: 1997	1917, 1933
	43.3°F (6.3°C)	42.6°F (5.9°C)	0.7°F (0.4°C)	31st Warmest	Warmest since: 1998	2016, 2017, 2018
	Ties: 1940, 1943

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