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 1931

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2021)	Warmest/Coolest Since	Record
December 1931 1-Month	25.0°F (-3.9°C)	28.1°F (-2.2°C)	-3.1°F (-1.7°C)	22nd Coolest	Coolest since: 1930	1990
	25.0°F (-3.9°C)	28.1°F (-2.2°C)	-3.1°F (-1.7°C)	106th Warmest	Warmest since: 1929	1917
	Ties: 1928
Nov–Dec 1931 2-Month	27.7°F (-2.4°C)	31.3°F (-0.4°C)	-3.6°F (-2.0°C)	8th Coolest	Coolest since: 1924	1985
Nov–Dec 1931 2-Month	27.7°F (-2.4°C)	31.3°F (-0.4°C)	-3.6°F (-2.0°C)	120th Warmest	Warmest since: 1930	1917
Oct–Dec 1931 3-Month	33.7°F (0.9°C)	36.2°F (2.3°C)	-2.5°F (-1.4°C)	12th Coolest	Coolest since: 1930	1985
Oct–Dec 1931 3-Month	33.7°F (0.9°C)	36.2°F (2.3°C)	-2.5°F (-1.4°C)	116th Warmest	Warmest since: 1929	1917
Sep–Dec 1931 4-Month	39.0°F (3.9°C)	41.1°F (5.1°C)	-2.1°F (-1.2°C)	14th Coolest	Coolest since: 1930	1985
Sep–Dec 1931 4-Month	39.0°F (3.9°C)	41.1°F (5.1°C)	-2.1°F (-1.2°C)	114th Warmest	Warmest since: 1929	1917
Aug–Dec 1931 5-Month	44.1°F (6.7°C)	45.5°F (7.5°C)	-1.4°F (-0.8°C)	14th Coolest	Coolest since: 1930	1985
	44.1°F (6.7°C)	45.5°F (7.5°C)	-1.4°F (-0.8°C)	114th Warmest	Warmest since: 1930	1917, 2014
	Ties: 1905, 1914, 1930
Jul–Dec 1931 6-Month	47.8°F (8.8°C)	48.6°F (9.2°C)	-0.8°F (-0.4°C)	29th Coolest	Coolest since: 1930	1985
	47.8°F (8.8°C)	48.6°F (9.2°C)	-0.8°F (-0.4°C)	99th Warmest	Warmest since: 1929	2014
	Ties: 1927, 1935, 1970
Jun–Dec 1931 7-Month	49.2°F (9.6°C)	49.7°F (9.8°C)	-0.5°F (-0.2°C)	35th Coolest	Coolest since: 1930	1916
	49.2°F (9.6°C)	49.7°F (9.8°C)	-0.5°F (-0.2°C)	93rd Warmest	Warmest since: 1929	2021
	Ties: 1927, 1956, 1968
May–Dec 1931 8-Month	49.7°F (9.8°C)	49.8°F (9.9°C)	-0.1°F (-0.1°C)	47th Coolest	Coolest since: 1930	1916
	49.7°F (9.8°C)	49.8°F (9.9°C)	-0.1°F (-0.1°C)	81st Warmest	Warmest since: 1929	2021
	Ties: 1900, 1928, 1944, 1965, 2000
Apr–Dec 1931 9-Month	49.1°F (9.5°C)	49.0°F (9.4°C)	0.1°F (0.1°C)	55th Coolest	Coolest since: 1930	1916
	49.1°F (9.5°C)	49.0°F (9.4°C)	0.1°F (0.1°C)	73rd Warmest	Warmest since: 1926	2021
	Ties: 1900, 1996
Mar–Dec 1931 10-Month	47.8°F (8.8°C)	47.7°F (8.7°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1930	1916
	47.8°F (8.8°C)	47.7°F (8.7°C)	0.1°F (0.1°C)	70th Warmest	Warmest since: 1926	2015
	Ties: 1950, 1952, 2009
Feb–Dec 1931 11-Month	46.2°F (7.9°C)	46.1°F (7.8°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1930	1955
	46.2°F (7.9°C)	46.1°F (7.8°C)	0.1°F (0.1°C)	70th Warmest	Warmest since: 1930	2015
	Ties: 1907, 1918, 1930, 1936, 1968, 1969, 1989, 2008, 2019
Jan–Dec 1931 12-Month	44.8°F (7.1°C)	44.5°F (6.9°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1930	1916
	44.8°F (7.1°C)	44.5°F (6.9°C)	0.3°F (0.2°C)	55th Warmest	Warmest since: 1926	2015
	Ties: 1918, 1977, 1996
Jul 1930–Dec 1931 18-Month	45.7°F (7.6°C)	45.8°F (7.7°C)	-0.1°F (-0.1°C)	50th Coolest	Coolest since: 1930	1985
	45.7°F (7.6°C)	45.8°F (7.7°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 1926	2015
	Ties: 1904, 1921, 1936, 1942, 1951, 1973, 1983
Jan 1930–Dec 1931 24-Month	44.1°F (6.7°C)	44.4°F (6.9°C)	-0.3°F (-0.2°C)	38th Coolest	Coolest since: 1930	1917
	44.1°F (6.7°C)	44.4°F (6.9°C)	-0.3°F (-0.2°C)	89th Warmest	Warmest since: 1928	2015
	Ties: 1900, 1919, 1928, 1932, 1943, 1944, 1964, 1971, 1983, 1984
Jan 1929–Dec 1931 36-Month	43.7°F (6.5°C)	44.4°F (6.9°C)	-0.7°F (-0.4°C)	20th Coolest	Coolest since: 1930	1913
	43.7°F (6.5°C)	44.4°F (6.9°C)	-0.7°F (-0.4°C)	106th Warmest	Warmest since: 1928	2016
	Ties: 1909, 1916, 1921
Jan 1928–Dec 1931 48-Month	43.9°F (6.6°C)	44.5°F (6.9°C)	-0.6°F (-0.3°C)	24th Coolest	Coolest since: 1930	1913, 1914, 1919
	43.9°F (6.6°C)	44.5°F (6.9°C)	-0.6°F (-0.3°C)	101st Warmest	Warmest since: 1929	2016, 2017
	Ties: 1900, 1904, 1933
Jan 1927–Dec 1931 60-Month	43.8°F (6.6°C)	44.4°F (6.9°C)	-0.6°F (-0.3°C)	17th Coolest	Coolest since: 1924	1913
	43.8°F (6.6°C)	44.4°F (6.9°C)	-0.6°F (-0.3°C)	107th Warmest	Warmest since: 1930	2018
	Ties: 1903, 1932

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on December 5, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings