Regional Rankings

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Month:

Region:

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 1939

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1939 1-Month	29.9°F (-1.2°C)	23.0°F (-5.0°C)	6.9°F (3.8°C)	126th Coolest	Coolest since: 1938	1909
December 1939 1-Month	29.9°F (-1.2°C)	23.0°F (-5.0°C)	6.9°F (3.8°C)	3rd Warmest	Warmest since: 1917	1980
Nov–Dec 1939 2-Month	32.7°F (0.4°C)	27.5°F (-2.5°C)	5.2°F (2.9°C)	123rd Coolest	Coolest since: 1938	1895
Nov–Dec 1939 2-Month	32.7°F (0.4°C)	27.5°F (-2.5°C)	5.2°F (2.9°C)	6th Warmest	Warmest since: 1917	2017
Oct–Dec 1939 3-Month	36.8°F (2.7°C)	33.5°F (0.8°C)	3.3°F (1.9°C)	117th Coolest	Coolest since: 1938	1898
	36.8°F (2.7°C)	33.5°F (0.8°C)	3.3°F (1.9°C)	12th Warmest	Warmest since: 1933	1950, 2017
	Ties: 1977
Sep–Dec 1939 4-Month	42.1°F (5.6°C)	39.2°F (4.0°C)	2.9°F (1.6°C)	118th Coolest	Coolest since: 1938	1898, 1912
	42.1°F (5.6°C)	39.2°F (4.0°C)	2.9°F (1.6°C)	11th Warmest	Warmest since: 1933	2021
	Ties: 1977
Aug–Dec 1939 5-Month	46.7°F (8.2°C)	44.3°F (6.8°C)	2.4°F (1.4°C)	117th Coolest	Coolest since: 1938	1912
	46.7°F (8.2°C)	44.3°F (6.8°C)	2.4°F (1.4°C)	12th Warmest	Warmest since: 1933	2021
	Ties: 1980, 2003, 2010, 2014
Jul–Dec 1939 6-Month	50.2°F (10.1°C)	48.1°F (8.9°C)	2.1°F (1.2°C)	112th Coolest	Coolest since: 1938	1912
	50.2°F (10.1°C)	48.1°F (8.9°C)	2.1°F (1.2°C)	17th Warmest	Warmest since: 1933	2021
	Ties: 2008
Jun–Dec 1939 7-Month	51.5°F (10.8°C)	49.9°F (9.9°C)	1.6°F (0.9°C)	105th Coolest	Coolest since: 1938	1912
Jun–Dec 1939 7-Month	51.5°F (10.8°C)	49.9°F (9.9°C)	1.6°F (0.9°C)	24th Warmest	Warmest since: 1933	2021
May–Dec 1939 8-Month	51.8°F (11.0°C)	50.0°F (10.0°C)	1.8°F (1.0°C)	111th Coolest	Coolest since: 1938	1912
	51.8°F (11.0°C)	50.0°F (10.0°C)	1.8°F (1.0°C)	18th Warmest	Warmest since: 1934	2021
	Ties: 1981, 1988, 2002
Apr–Dec 1939 9-Month	51.0°F (10.6°C)	49.1°F (9.5°C)	1.9°F (1.1°C)	113th Coolest	Coolest since: 1938	1912
	51.0°F (10.6°C)	49.1°F (9.5°C)	1.9°F (1.1°C)	16th Warmest	Warmest since: 1934	2021
	Ties: 2000
Mar–Dec 1939 10-Month	49.2°F (9.6°C)	47.5°F (8.6°C)	1.7°F (1.0°C)	107th Coolest	Coolest since: 1938	1912
	49.2°F (9.6°C)	47.5°F (8.6°C)	1.7°F (1.0°C)	22nd Warmest	Warmest since: 1934	2012
	Ties: 1940
Feb–Dec 1939 11-Month	46.1°F (7.8°C)	45.5°F (7.5°C)	0.6°F (0.3°C)	82nd Coolest	Coolest since: 1938	1912
	46.1°F (7.8°C)	45.5°F (7.5°C)	0.6°F (0.3°C)	47th Warmest	Warmest since: 1936	2017
	Ties: 1959, 2008
Jan–Dec 1939 12-Month	44.1°F (6.7°C)	43.4°F (6.3°C)	0.7°F (0.4°C)	82nd Coolest	Coolest since: 1938	1895, 1912
	44.1°F (6.7°C)	43.4°F (6.3°C)	0.7°F (0.4°C)	47th Warmest	Warmest since: 1936	2012
	Ties: 2013
Jul 1938–Dec 1939 18-Month	45.3°F (7.4°C)	45.0°F (7.2°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1937	1912
	45.3°F (7.4°C)	45.0°F (7.2°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 1938	1934
	Ties: 1921, 1947, 1960, 1961
Jan 1938–Dec 1939 24-Month	43.9°F (6.6°C)	43.4°F (6.3°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 1938	1913
	43.9°F (6.6°C)	43.4°F (6.3°C)	0.5°F (0.3°C)	54th Warmest	Warmest since: 1936	2018
	Ties: 1943
Jan 1937–Dec 1939 36-Month	43.5°F (6.4°C)	43.4°F (6.3°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1933	1899, 1913
	43.5°F (6.4°C)	43.4°F (6.3°C)	0.1°F (0.1°C)	69th Warmest	Warmest since: 1938	2017
	Ties: 1927, 1945, 1948, 1986
Jan 1936–Dec 1939 48-Month	43.8°F (6.6°C)	43.4°F (6.3°C)	0.4°F (0.3°C)	74th Coolest	Coolest since: 1938	1898
	43.8°F (6.6°C)	43.4°F (6.3°C)	0.4°F (0.3°C)	52nd Warmest	Warmest since: 1937	2018
	Ties: 1942, 1954, 1962, 1979, 1984, 1987
Jan 1935–Dec 1939 60-Month	43.8°F (6.6°C)	43.4°F (6.3°C)	0.4°F (0.3°C)	74th Coolest	Coolest since: 1935	1899
	43.8°F (6.6°C)	43.4°F (6.3°C)	0.4°F (0.3°C)	51st Warmest	Warmest since: 1938	2018
	Ties: 1935, 1941, 1942, 1957, 1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on June 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings