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

December 1966 Average Temperature Rankings

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
December 1966 1-Month	31.7°F (-0.2°C)	28.8°F (-1.8°C)	2.9°F	106th Coolest	Coolest since: 1965	1990
December 1966 1-Month	31.7°F (-0.2°C)	28.8°F (-1.8°C)	2.9°F	25th Warmest	Warmest since: 1962	1917
Nov–Dec 1966 2-Month	34.9°F (1.6°C)	32.1°F (0.1°C)	2.8°F	114th Coolest	Coolest since: 1965	1985
Nov–Dec 1966 2-Month	34.9°F (1.6°C)	32.1°F (0.1°C)	2.8°F	17th Warmest	Warmest since: 1962	1917
Oct–Dec 1966 3-Month	38.5°F (3.6°C)	36.9°F (2.7°C)	1.6°F	105th Coolest	Coolest since: 1964	1985
Oct–Dec 1966 3-Month	38.5°F (3.6°C)	36.9°F (2.7°C)	1.6°F	26th Warmest	Warmest since: 1965	1917
Sep–Dec 1966 4-Month	43.8°F (6.6°C)	41.8°F (5.4°C)	2.0°F	115th Coolest	Coolest since: 1965	1985
Sep–Dec 1966 4-Month	43.8°F (6.6°C)	41.8°F (5.4°C)	2.0°F	16th Warmest	Warmest since: 1963	1917
Aug–Dec 1966 5-Month	47.8°F (8.8°C)	46.1°F (7.8°C)	1.7°F	107th Coolest	Coolest since: 1965	1985
Aug–Dec 1966 5-Month	47.8°F (8.8°C)	46.1°F (7.8°C)	1.7°F	24th Warmest	Warmest since: 1963	2024
Jul–Dec 1966 6-Month	50.4°F (10.2°C)	49.2°F (9.6°C)	1.2°F	100th Coolest	Coolest since: 1965	1985
Jul–Dec 1966 6-Month	50.4°F (10.2°C)	49.2°F (9.6°C)	1.2°F	31st Warmest	Warmest since: 1958	2024
Jun–Dec 1966 7-Month	51.2°F (10.7°C)	50.4°F (10.2°C)	0.8°F	93rd Coolest	Coolest since: 1965	1916
Jun–Dec 1966 7-Month	51.2°F (10.7°C)	50.4°F (10.2°C)	0.8°F	38th Warmest	Warmest since: 1958	2024
May–Dec 1966 8-Month	51.4°F (10.8°C)	50.4°F (10.2°C)	1.0°F	99th Coolest	Coolest since: 1965	1916
May–Dec 1966 8-Month	51.4°F (10.8°C)	50.4°F (10.2°C)	1.0°F	32nd Warmest	Warmest since: 1958	2023
Apr–Dec 1966 9-Month	50.5°F (10.3°C)	49.6°F (9.8°C)	0.9°F	98th Coolest	Coolest since: 1965	1916
	50.5°F (10.3°C)	49.6°F (9.8°C)	0.9°F	33rd Warmest	Warmest since: 1958	2021
	Ties: 1904
Mar–Dec 1966 10-Month	49.1°F (9.5°C)	48.3°F (9.1°C)	0.8°F	95th Coolest	Coolest since: 1965	1916
Mar–Dec 1966 10-Month	49.1°F (9.5°C)	48.3°F (9.1°C)	0.8°F	36th Warmest	Warmest since: 1958	2015
Feb–Dec 1966 11-Month	47.5°F (8.6°C)	46.7°F (8.2°C)	0.8°F	91st Coolest	Coolest since: 1965	1955
	47.5°F (8.6°C)	46.7°F (8.2°C)	0.8°F	40th Warmest	Warmest since: 1963	2015
	Ties: 1961
Jan–Dec 1966 12-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	93rd Coolest	Coolest since: 1965	1916
Jan–Dec 1966 12-Month	46.0°F (7.8°C)	45.1°F (7.3°C)	0.9°F	38th Warmest	Warmest since: 1961	2015
Jul 1965–Dec 1966 18-Month	47.2°F (8.4°C)	46.5°F (8.1°C)	0.7°F	88th Coolest	Coolest since: 1965	1985
Jul 1965–Dec 1966 18-Month	47.2°F (8.4°C)	46.5°F (8.1°C)	0.7°F	42nd Warmest	Warmest since: 1963	2015
Jan 1965–Dec 1966 24-Month	45.7°F (7.6°C)	45.1°F (7.3°C)	0.6°F	85th Coolest	Coolest since: 1965	1917
Jan 1965–Dec 1966 24-Month	45.7°F (7.6°C)	45.1°F (7.3°C)	0.6°F	45th Warmest	Warmest since: 1959	2015
Jan 1964–Dec 1966 36-Month	45.0°F (7.2°C)	45.1°F (7.3°C)	-0.1°F	54th Coolest	Coolest since: 1965	1913
	45.0°F (7.2°C)	45.1°F (7.3°C)	-0.1°F	75th Warmest	Warmest since: 1963	2016
	Ties: 1907
Jan 1963–Dec 1966 48-Month	45.2°F (7.3°C)	45.1°F (7.3°C)	0.1°F	66th Coolest	Coolest since: 1965	1913, 1914
	45.2°F (7.3°C)	45.1°F (7.3°C)	0.1°F	62nd Warmest	Warmest since: 1963	2016, 2017
	Ties: 1962
Jan 1962–Dec 1966 60-Month	45.1°F (7.3°C)	45.0°F (7.2°C)	0.1°F	56th Coolest	Coolest since: 1964	1913
Jan 1962–Dec 1966 60-Month	45.1°F (7.3°C)	45.0°F (7.2°C)	0.1°F	71st Warmest	Warmest since: 1965	2018

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings

Climate at a Glance Regional Rankings

Regional Rankings

Northwest

December 1966 Average Temperature Rankings

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