Regional Rankings

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Month:

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Please note, Palmer Indices are not available for NWS Regions. 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.

Upper Colorado River Basin

Average Temperature Rankings, December 1938

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1938 1-Month	24.7°F (-4.1°C)	23.0°F (-5.0°C)	1.7°F (0.9°C)	86th Coolest	Coolest since: 1936	1909
	24.7°F (-4.1°C)	23.0°F (-5.0°C)	1.7°F (0.9°C)	43rd Warmest	Warmest since: 1937	1980
	Ties: 1896
Nov–Dec 1938 2-Month	25.2°F (-3.8°C)	27.5°F (-2.5°C)	-2.3°F (-1.3°C)	26th Coolest	Coolest since: 1932	1895
	25.2°F (-3.8°C)	27.5°F (-2.5°C)	-2.3°F (-1.3°C)	103rd Warmest	Warmest since: 1937	2017
	Ties: 1945, 1968, 1979, 1990
Oct–Dec 1938 3-Month	32.4°F (0.2°C)	33.5°F (0.8°C)	-1.1°F (-0.6°C)	37th Coolest	Coolest since: 1932	1898
	32.4°F (0.2°C)	33.5°F (0.8°C)	-1.1°F (-0.6°C)	92nd Warmest	Warmest since: 1937	1950, 2017
	Ties: 1969, 2013
Sep–Dec 1938 4-Month	38.8°F (3.8°C)	39.2°F (4.0°C)	-0.4°F (-0.2°C)	45th Coolest	Coolest since: 1932	1898, 1912
	38.8°F (3.8°C)	39.2°F (4.0°C)	-0.4°F (-0.2°C)	84th Warmest	Warmest since: 1937	2021
	Ties: 2000
Aug–Dec 1938 5-Month	44.2°F (6.8°C)	44.3°F (6.8°C)	-0.1°F (0.0°C)	49th Coolest	Coolest since: 1932	1912
	44.2°F (6.8°C)	44.3°F (6.8°C)	-0.1°F (0.0°C)	80th Warmest	Warmest since: 1937	2021
	Ties: 1906, 1907, 1941, 1974
Jul–Dec 1938 6-Month	47.7°F (8.7°C)	48.1°F (8.9°C)	-0.4°F (-0.2°C)	47th Coolest	Coolest since: 1932	1912
	47.7°F (8.7°C)	48.1°F (8.9°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1937	2021
	Ties: 1907, 1984
Jun–Dec 1938 7-Month	49.7°F (9.8°C)	49.9°F (9.9°C)	-0.2°F (-0.1°C)	53rd Coolest	Coolest since: 1932	1912
	49.7°F (9.8°C)	49.9°F (9.9°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1937	2021
	Ties: 1900, 1965
May–Dec 1938 8-Month	49.7°F (9.8°C)	50.0°F (10.0°C)	-0.3°F (-0.2°C)	44th Coolest	Coolest since: 1932	1912
	49.7°F (9.8°C)	50.0°F (10.0°C)	-0.3°F (-0.2°C)	85th Warmest	Warmest since: 1937	2021
	Ties: 1941, 1948, 1970
Apr–Dec 1938 9-Month	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 1932	1912
	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	77th Warmest	Warmest since: 1937	2021
	Ties: 1948
Mar–Dec 1938 10-Month	47.2°F (8.4°C)	47.5°F (8.6°C)	-0.3°F (-0.2°C)	50th Coolest	Coolest since: 1932	1912
	47.2°F (8.4°C)	47.5°F (8.6°C)	-0.3°F (-0.2°C)	79th Warmest	Warmest since: 1937	2012
	Ties: 1914, 1955
Feb–Dec 1938 11-Month	45.4°F (7.4°C)	45.5°F (7.5°C)	-0.1°F (-0.1°C)	53rd Coolest	Coolest since: 1932	1912
	45.4°F (7.4°C)	45.5°F (7.5°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest since: 1937	2017
	Ties: 1941, 1983, 1985
Jan–Dec 1938 12-Month	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	68th Coolest	Coolest since: 1937	1895, 1912
	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	61st Warmest	Warmest since: 1936	2012
	Ties: 1947, 1950, 1956, 1960, 2008
Jul 1937–Dec 1938 18-Month	45.8°F (7.7°C)	45.0°F (7.2°C)	0.8°F (0.5°C)	84th Coolest	Coolest since: 1937	1912
	45.8°F (7.7°C)	45.0°F (7.2°C)	0.8°F (0.5°C)	44th Warmest	Warmest since: 1936	1934
	Ties: 1958, 1988, 2010
Jan 1937–Dec 1938 24-Month	43.2°F (6.2°C)	43.4°F (6.3°C)	-0.2°F (-0.1°C)	48th Coolest	Coolest since: 1933	1913
	43.2°F (6.2°C)	43.4°F (6.3°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1937	2018
	Ties: 1951
Jan 1936–Dec 1938 36-Month	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1937	1899, 1913
	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	55th Warmest	Warmest since: 1937	2017
	Ties: 1902, 1937, 1943, 1947, 1962, 1980, 1993
Jan 1935–Dec 1938 48-Month	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 1933	1898
	43.7°F (6.5°C)	43.4°F (6.3°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 1937	2018
	Ties: 1946, 1955, 1957, 1978
Jan 1934–Dec 1938 60-Month	44.4°F (6.9°C)	43.4°F (6.3°C)	1.0°F (0.6°C)	94th Coolest	Coolest since: 1937	1899
	44.4°F (6.9°C)	43.4°F (6.3°C)	1.0°F (0.6°C)	31st Warmest	Warmest to Date	2018
	Ties: 1989, 1991, 1994, 1995

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on June 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings