Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pacific Northwest Basin

Average Temperature Rankings, December 1989

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1989 1-Month	30.6°F (-0.8°C)	28.1°F (-2.2°C)	2.5°F (1.4°C)	96th Coolest	Coolest since: 1988	1990
	30.6°F (-0.8°C)	28.1°F (-2.2°C)	2.5°F (1.4°C)	33rd Warmest	Warmest since: 1981	1917
	Ties: 2003
Nov–Dec 1989 2-Month	33.8°F (1.0°C)	31.3°F (-0.4°C)	2.5°F (1.4°C)	107th Coolest	Coolest since: 1988	1985
Nov–Dec 1989 2-Month	33.8°F (1.0°C)	31.3°F (-0.4°C)	2.5°F (1.4°C)	22nd Warmest	Warmest since: 1981	1917
Oct–Dec 1989 3-Month	37.7°F (3.2°C)	36.2°F (2.3°C)	1.5°F (0.9°C)	104th Coolest	Coolest since: 1986	1985
	37.7°F (3.2°C)	36.2°F (2.3°C)	1.5°F (0.9°C)	25th Warmest	Warmest since: 1988	1917
	Ties: 1963, 1974, 2012
Sep–Dec 1989 4-Month	42.5°F (5.8°C)	41.1°F (5.1°C)	1.4°F (0.7°C)	99th Coolest	Coolest since: 1986	1985
	42.5°F (5.8°C)	41.1°F (5.1°C)	1.4°F (0.7°C)	30th Warmest	Warmest since: 1988	1917
	Ties: 1998
Aug–Dec 1989 5-Month	46.2°F (7.9°C)	45.5°F (7.5°C)	0.7°F (0.4°C)	83rd Coolest	Coolest since: 1986	1985
	46.2°F (7.9°C)	45.5°F (7.5°C)	0.7°F (0.4°C)	46th Warmest	Warmest since: 1988	1917, 2014
	Ties: 2010
Jul–Dec 1989 6-Month	49.3°F (9.6°C)	48.6°F (9.2°C)	0.7°F (0.4°C)	84th Coolest	Coolest since: 1986	1985
	49.3°F (9.6°C)	48.6°F (9.2°C)	0.7°F (0.4°C)	45th Warmest	Warmest since: 1988	2014
	Ties: 1938, 1943, 1980, 2016
Jun–Dec 1989 7-Month	50.7°F (10.4°C)	49.8°F (9.9°C)	0.9°F (0.5°C)	94th Coolest	Coolest since: 1986	1916
	50.7°F (10.4°C)	49.8°F (9.9°C)	0.9°F (0.5°C)	35th Warmest	Warmest since: 1988	2021
	Ties: 1938
May–Dec 1989 8-Month	50.5°F (10.3°C)	49.8°F (9.9°C)	0.7°F (0.4°C)	90th Coolest	Coolest since: 1986	1916
	50.5°F (10.3°C)	49.8°F (9.9°C)	0.7°F (0.4°C)	39th Warmest	Warmest since: 1988	2021
	Ties: 1925, 1973, 2008, 2019
Apr–Dec 1989 9-Month	50.0°F (10.0°C)	49.0°F (9.4°C)	1.0°F (0.6°C)	101st Coolest	Coolest since: 1986	1916
	50.0°F (10.0°C)	49.0°F (9.4°C)	1.0°F (0.6°C)	28th Warmest	Warmest since: 1988	2021
	Ties: 1904, 2002, 2022
Mar–Dec 1989 10-Month	48.6°F (9.2°C)	47.7°F (8.7°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 1985	1916
	48.6°F (9.2°C)	47.7°F (8.7°C)	0.9°F (0.5°C)	31st Warmest	Warmest since: 1988	2015
	Ties: 1925, 1941
Feb–Dec 1989 11-Month	46.2°F (7.9°C)	46.1°F (7.8°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1985	1955
	46.2°F (7.9°C)	46.1°F (7.8°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1988	2015
	Ties: 1907, 1918, 1930, 1931, 1936, 1968, 1969, 2008, 2019
Jan–Dec 1989 12-Month	44.6°F (7.0°C)	44.4°F (6.9°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1985	1916
	44.6°F (7.0°C)	44.4°F (6.9°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1988	2015
	Ties: 1910, 1914, 1968, 1979
Jul 1988–Dec 1989 18-Month	46.4°F (8.0°C)	45.8°F (7.7°C)	0.6°F (0.3°C)	81st Coolest	Coolest since: 1986	1985
	46.4°F (8.0°C)	45.8°F (7.7°C)	0.6°F (0.3°C)	47th Warmest	Warmest since: 1988	2015
	Ties: 1954, 1974, 1994, 1996, 2010
Jan 1988–Dec 1989 24-Month	45.3°F (7.4°C)	44.5°F (6.9°C)	0.8°F (0.5°C)	93rd Coolest	Coolest since: 1986	1917
	45.3°F (7.4°C)	44.5°F (6.9°C)	0.8°F (0.5°C)	35th Warmest	Warmest since: 1988	2015
	Ties: 1996, 2000
Jan 1987–Dec 1989 36-Month	45.7°F (7.6°C)	44.5°F (6.9°C)	1.2°F (0.7°C)	109th Coolest	Coolest since: 1987	1913
	45.7°F (7.6°C)	44.5°F (6.9°C)	1.2°F (0.7°C)	18th Warmest	Warmest since: 1988	2016
	Ties: 1999, 2000, 2019
Jan 1986–Dec 1989 48-Month	45.7°F (7.6°C)	44.4°F (6.9°C)	1.3°F (0.7°C)	110th Coolest	Coolest since: 1988	1913, 1914, 1919
	45.7°F (7.6°C)	44.4°F (6.9°C)	1.3°F (0.7°C)	16th Warmest	Warmest since: 1941	2016, 2017
	Ties: 2001
Jan 1985–Dec 1989 60-Month	45.0°F (7.2°C)	44.4°F (6.9°C)	0.6°F (0.3°C)	88th Coolest	Coolest since: 1988	1913
	45.0°F (7.2°C)	44.4°F (6.9°C)	0.6°F (0.3°C)	37th Warmest	Warmest since: 1962	2018
	Ties: 1962, 2011, 2012

Citing This Page

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