Climate at a Glance | Regional Rankings | National Centers for Environmental Information (NCEI)

Regional Rankings

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Please note, Degree Days are not available for Great Plains, Souther Plains and Gulf Coast, Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Northwest

April 1998 Average Temperature Rankings

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
April 1998 1-Month	43.7°F (6.5°C)	43.2°F (6.2°C)	0.5°F	71st Coolest	Coolest since: 1997	1975
April 1998 1-Month	43.7°F (6.5°C)	43.2°F (6.2°C)	0.5°F	60th Warmest	Warmest since: 1996	1934
Mar–Apr 1998 2-Month	41.0°F (5.0°C)	39.9°F (4.4°C)	1.1°F	94th Coolest	Coolest since: 1997	1917
Mar–Apr 1998 2-Month	41.0°F (5.0°C)	39.9°F (4.4°C)	1.1°F	37th Warmest	Warmest since: 1996	1934
Feb–Apr 1998 3-Month	38.7°F (3.7°C)	37.0°F (2.8°C)	1.7°F	102nd Coolest	Coolest since: 1997	1917
	38.7°F (3.7°C)	37.0°F (2.8°C)	1.7°F	29th Warmest	Warmest since: 1995	1934
	Ties: 1900, 1963, 1980
Jan–Apr 1998 4-Month	37.0°F (2.8°C)	34.5°F (1.4°C)	2.5°F	106th Coolest	Coolest since: 1997	1922
Jan–Apr 1998 4-Month	37.0°F (2.8°C)	34.5°F (1.4°C)	2.5°F	25th Warmest	Warmest since: 1995	1934
Dec 1997–Apr 1998 5-Month	35.5°F (1.9°C)	33.4°F (0.8°C)	2.1°F	109th Coolest	Coolest since: 1997	1917
	35.5°F (1.9°C)	33.4°F (0.8°C)	2.1°F	21st Warmest	Warmest since: 1995	1934
	Ties: 1918, 1958, 1959, 1995
Nov 1997–Apr 1998 6-Month	35.9°F (2.2°C)	33.7°F (0.9°C)	2.2°F	113th Coolest	Coolest since: 1997	1917
Nov 1997–Apr 1998 6-Month	35.9°F (2.2°C)	33.7°F (0.9°C)	2.2°F	17th Warmest	Warmest since: 1992	1934
Oct 1997–Apr 1998 7-Month	37.3°F (2.9°C)	35.5°F (1.9°C)	1.8°F	111th Coolest	Coolest since: 1997	1917
Oct 1997–Apr 1998 7-Month	37.3°F (2.9°C)	35.5°F (1.9°C)	1.8°F	19th Warmest	Warmest since: 1992	1934
Sep 1997–Apr 1998 8-Month	39.9°F (4.4°C)	38.1°F (3.4°C)	1.8°F	110th Coolest	Coolest since: 1997	1917
	39.9°F (4.4°C)	38.1°F (3.4°C)	1.8°F	20th Warmest	Warmest since: 1992	1934
	Ties: 1954
Aug 1997–Apr 1998 9-Month	42.8°F (6.0°C)	40.9°F (4.9°C)	1.9°F	117th Coolest	Coolest since: 1997	1917
Aug 1997–Apr 1998 9-Month	42.8°F (6.0°C)	40.9°F (4.9°C)	1.9°F	13th Warmest	Warmest since: 1992	1934
Jul 1997–Apr 1998 10-Month	44.9°F (7.2°C)	43.3°F (6.3°C)	1.6°F	107th Coolest	Coolest since: 1997	1917
Jul 1997–Apr 1998 10-Month	44.9°F (7.2°C)	43.3°F (6.3°C)	1.6°F	23rd Warmest	Warmest since: 1992	2015
Jun 1997–Apr 1998 11-Month	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F	108th Coolest	Coolest since: 1997	1917
Jun 1997–Apr 1998 11-Month	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F	22nd Warmest	Warmest since: 1992	2015
May 1997–Apr 1998 12-Month	46.7°F (8.2°C)	45.1°F (7.3°C)	1.6°F	112th Coolest	Coolest since: 1997	1917
	46.7°F (8.2°C)	45.1°F (7.3°C)	1.6°F	18th Warmest	Warmest since: 1992	2015
	Ties: 1968, 1988
Nov 1996–Apr 1998 18-Month	42.6°F (5.9°C)	41.3°F (5.2°C)	1.3°F	106th Coolest	Coolest since: 1997	1917
Nov 1996–Apr 1998 18-Month	42.6°F (5.9°C)	41.3°F (5.2°C)	1.3°F	23rd Warmest	Warmest since: 1995	2016
May 1996–Apr 1998 24-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	95th Coolest	Coolest since: 1997	1917
May 1996–Apr 1998 24-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	34th Warmest	Warmest since: 1996	2016
May 1995–Apr 1998 36-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	100th Coolest	Coolest since: 1997	1917
May 1995–Apr 1998 36-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	28th Warmest	Warmest since: 1997	2016
May 1994–Apr 1998 48-Month	46.1°F (7.8°C)	45.0°F (7.2°C)	1.1°F	102nd Coolest	Coolest since: 1997	1913
May 1994–Apr 1998 48-Month	46.1°F (7.8°C)	45.0°F (7.2°C)	1.1°F	25th Warmest	Warmest since: 1995	2016, 2018
May 1993–Apr 1998 60-Month	46.0°F (7.8°C)	45.0°F (7.2°C)	1.0°F	97th Coolest	Coolest since: 1997	1917
May 1993–Apr 1998 60-Month	46.0°F (7.8°C)	45.0°F (7.2°C)	1.0°F	29th Warmest	Warmest since: 1996	2018, 2019

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NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2025, retrieved on April 1, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings

Climate at a Glance Regional Rankings

Regional Rankings

Northwest

April 1998 Average Temperature Rankings

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