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.

Washington

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	57.1°F (13.9°C)	56.9°F (13.8°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1996	1895
	57.1°F (13.9°C)	56.9°F (13.8°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1998	1967
	Ties: 1968, 1980, 2010, 2019
Aug–Sep 1999 2-Month	61.4°F (16.3°C)	60.3°F (15.7°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1996	1895
	61.4°F (16.3°C)	60.3°F (15.7°C)	1.1°F (0.6°C)	36th Warmest	Warmest since: 1998	2022
	Ties: 1950, 2015
Jul–Sep 1999 3-Month	61.6°F (16.4°C)	61.5°F (16.4°C)	0.1°F (0.0°C)	57th Coolest	Coolest since: 1993	1895
	61.6°F (16.4°C)	61.5°F (16.4°C)	0.1°F (0.0°C)	72nd Warmest	Warmest since: 1998	2022
	Ties: 1908, 1928, 1931, 1941, 1945, 1953, 1973, 1992, 2010
Jun–Sep 1999 4-Month	60.2°F (15.7°C)	60.6°F (15.9°C)	-0.4°F (-0.2°C)	37th Coolest	Coolest since: 1993	1954
	60.2°F (15.7°C)	60.6°F (15.9°C)	-0.4°F (-0.2°C)	92nd Warmest	Warmest since: 1998	2021
	Ties: 1913, 1920, 1929, 1965, 1966, 2010
May–Sep 1999 5-Month	57.8°F (14.3°C)	58.8°F (14.9°C)	-1.0°F (-0.6°C)	19th Coolest	Coolest since: 1984	1899, 1964
	57.8°F (14.3°C)	58.8°F (14.9°C)	-1.0°F (-0.6°C)	110th Warmest	Warmest since: 1998	1958
	Ties: 1920, 1948, 1953, 1976
Apr–Sep 1999 6-Month	55.5°F (13.1°C)	56.5°F (13.6°C)	-1.0°F (-0.5°C)	23rd Coolest	Coolest since: 1984	1955
	55.5°F (13.1°C)	56.5°F (13.6°C)	-1.0°F (-0.5°C)	106th Warmest	Warmest since: 1998	2015
	Ties: 1959, 1975
Mar–Sep 1999 7-Month	53.1°F (11.7°C)	54.0°F (12.2°C)	-0.9°F (-0.5°C)	26th Coolest	Coolest since: 1984	1955
	53.1°F (11.7°C)	54.0°F (12.2°C)	-0.9°F (-0.5°C)	103rd Warmest	Warmest since: 1998	2015
	Ties: 1913, 1935, 1950, 1953, 1959, 1984
Feb–Sep 1999 8-Month	50.8°F (10.4°C)	51.3°F (10.7°C)	-0.5°F (-0.3°C)	37th Coolest	Coolest since: 1989	1955
	50.8°F (10.4°C)	51.3°F (10.7°C)	-0.5°F (-0.3°C)	92nd Warmest	Warmest since: 1998	2015
	Ties: 1912, 1923, 1935, 1937, 1943, 1972, 1989
Jan–Sep 1999 9-Month	49.0°F (9.4°C)	48.8°F (9.3°C)	0.2°F (0.1°C)	62nd Coolest	Coolest since: 1996	1916
	49.0°F (9.4°C)	48.8°F (9.3°C)	0.2°F (0.1°C)	67th Warmest	Warmest since: 1998	2015
	Ties: 1942, 1944, 1970
Dec 1998–Sep 1999 10-Month	47.1°F (8.4°C)	47.0°F (8.3°C)	0.1°F (0.1°C)	62nd Coolest	Coolest since: 1996	1916
	47.1°F (8.4°C)	47.0°F (8.3°C)	0.1°F (0.1°C)	66th Warmest	Warmest since: 1998	2015
	Ties: 1991
Nov 1998–Sep 1999 11-Month	46.4°F (8.0°C)	46.0°F (7.8°C)	0.4°F (0.2°C)	72nd Coolest	Coolest since: 1997	1916, 1917
	46.4°F (8.0°C)	46.0°F (7.8°C)	0.4°F (0.2°C)	56th Warmest	Warmest since: 1998	2015
	Ties: 1953, 1991, 1996, 1997
Oct 1998–Sep 1999 12-Month	46.5°F (8.1°C)	46.2°F (7.9°C)	0.3°F (0.2°C)	74th Coolest	Coolest since: 1997	1917
	46.5°F (8.1°C)	46.2°F (7.9°C)	0.3°F (0.2°C)	54th Warmest	Warmest since: 1998	2015
	Ties: 1908, 1935, 1978, 2010
Apr 1998–Sep 1999 18-Month	50.7°F (10.4°C)	49.6°F (9.8°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 1997	1917
Apr 1998–Sep 1999 18-Month	50.7°F (10.4°C)	49.6°F (9.8°C)	1.1°F (0.6°C)	28th Warmest	Warmest since: 1998	2015
Oct 1997–Sep 1999 24-Month	47.6°F (8.7°C)	46.1°F (7.8°C)	1.5°F (0.9°C)	114th Coolest	Coolest since: 1998	1917
	47.6°F (8.7°C)	46.1°F (7.8°C)	1.5°F (0.9°C)	13th Warmest	Warmest since: 1995	2016
	Ties: 1967, 1988, 1995, 2003, 2014
Oct 1996–Sep 1999 36-Month	47.2°F (8.4°C)	46.1°F (7.8°C)	1.1°F (0.6°C)	104th Coolest	Coolest since: 1998	1950
	47.2°F (8.4°C)	46.1°F (7.8°C)	1.1°F (0.6°C)	22nd Warmest	Warmest since: 1996	2016
	Ties: 1926, 1996, 2019
Oct 1995–Sep 1999 48-Month	47.0°F (8.3°C)	46.2°F (7.9°C)	0.8°F (0.4°C)	99th Coolest	Coolest since: 1997	1950, 1951, 1952
	47.0°F (8.3°C)	46.2°F (7.9°C)	0.8°F (0.4°C)	26th Warmest	Warmest since: 1998	2016
	Ties: 1940, 1961, 1997, 2008
Oct 1994–Sep 1999 60-Month	47.0°F (8.3°C)	46.1°F (7.8°C)	0.9°F (0.5°C)	99th Coolest	Coolest since: 1997	1920, 1952
	47.0°F (8.3°C)	46.1°F (7.8°C)	0.9°F (0.5°C)	25th Warmest	Warmest since: 1998	2017
	Ties: 1943, 1944, 2000, 2001, 2003, 2009

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings