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.

Upper Midwest

December 1939 Average Temperature Rankings

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Coolest/Warmest Since	Record
December 1939 1-Month	27.1°F (-2.7°C)	18.6°F (-7.4°C)	8.5°F	123rd Coolest	Coolest since: 1938	1983
December 1939 1-Month	27.1°F (-2.7°C)	18.6°F (-7.4°C)	8.5°F	8th Warmest	Warmest since: 1931	2023
Nov–Dec 1939 2-Month	30.8°F (-0.7°C)	25.3°F (-3.7°C)	5.5°F	115th Coolest	Coolest since: 1938	1985
Nov–Dec 1939 2-Month	30.8°F (-0.7°C)	25.3°F (-3.7°C)	5.5°F	16th Warmest	Warmest since: 1931	2001
Oct–Dec 1939 3-Month	36.0°F (2.2°C)	32.7°F (0.4°C)	3.3°F	113th Coolest	Coolest since: 1938	1976
Oct–Dec 1939 3-Month	36.0°F (2.2°C)	32.7°F (0.4°C)	3.3°F	18th Warmest	Warmest since: 1931	2015
Sep–Dec 1939 4-Month	42.5°F (5.8°C)	39.2°F (4.0°C)	3.3°F	118th Coolest	Coolest since: 1938	1976
Sep–Dec 1939 4-Month	42.5°F (5.8°C)	39.2°F (4.0°C)	3.3°F	13th Warmest	Warmest since: 1931	2015
Aug–Dec 1939 5-Month	47.5°F (8.6°C)	44.8°F (7.1°C)	2.7°F	117th Coolest	Coolest since: 1938	1917
Aug–Dec 1939 5-Month	47.5°F (8.6°C)	44.8°F (7.1°C)	2.7°F	14th Warmest	Warmest since: 1931	2015
Jul–Dec 1939 6-Month	51.5°F (10.8°C)	49.0°F (9.4°C)	2.5°F	118th Coolest	Coolest since: 1938	1917
Jul–Dec 1939 6-Month	51.5°F (10.8°C)	49.0°F (9.4°C)	2.5°F	13th Warmest	Warmest since: 1931	1931
Jun–Dec 1939 7-Month	53.6°F (12.0°C)	51.3°F (10.7°C)	2.3°F	119th Coolest	Coolest since: 1938	1917
Jun–Dec 1939 7-Month	53.6°F (12.0°C)	51.3°F (10.7°C)	2.3°F	12th Warmest	Warmest since: 1931	1931
May–Dec 1939 8-Month	54.4°F (12.4°C)	51.8°F (11.0°C)	2.6°F	120th Coolest	Coolest since: 1938	1917
May–Dec 1939 8-Month	54.4°F (12.4°C)	51.8°F (11.0°C)	2.6°F	11th Warmest	Warmest since: 1931	1931, 2023
Apr–Dec 1939 9-Month	52.8°F (11.6°C)	50.8°F (10.4°C)	2.0°F	114th Coolest	Coolest since: 1938	1917
Apr–Dec 1939 9-Month	52.8°F (11.6°C)	50.8°F (10.4°C)	2.0°F	17th Warmest	Warmest since: 1931	1931
Mar–Dec 1939 10-Month	50.3°F (10.2°C)	48.6°F (9.2°C)	1.7°F	108th Coolest	Coolest since: 1937	1917
Mar–Dec 1939 10-Month	50.3°F (10.2°C)	48.6°F (9.2°C)	1.7°F	23rd Warmest	Warmest since: 1938	2012, 2021
Feb–Dec 1939 11-Month	46.8°F (8.2°C)	45.8°F (7.7°C)	1.0°F	95th Coolest	Coolest since: 1937	1917
	46.8°F (8.2°C)	45.8°F (7.7°C)	1.0°F	36th Warmest	Warmest since: 1938	2024
	Ties: 1922
Jan–Dec 1939 12-Month	44.5°F (6.9°C)	43.0°F (6.1°C)	1.5°F	104th Coolest	Coolest since: 1937	1917
Jan–Dec 1939 12-Month	44.5°F (6.9°C)	43.0°F (6.1°C)	1.5°F	27th Warmest	Warmest since: 1938	2024
Jul 1938–Dec 1939 18-Month	46.6°F (8.1°C)	45.0°F (7.2°C)	1.6°F	109th Coolest	Coolest since: 1938	1917
Jul 1938–Dec 1939 18-Month	46.6°F (8.1°C)	45.0°F (7.2°C)	1.6°F	21st Warmest	Warmest since: 1931	2024
Jan 1938–Dec 1939 24-Month	44.6°F (7.0°C)	43.0°F (6.1°C)	1.6°F	105th Coolest	Coolest since: 1938	1917
Jan 1938–Dec 1939 24-Month	44.6°F (7.0°C)	43.0°F (6.1°C)	1.6°F	25th Warmest	Warmest since: 1932	2024
Jan 1937–Dec 1939 36-Month	43.7°F (6.5°C)	43.0°F (6.1°C)	0.7°F	88th Coolest	Coolest since: 1938	1917
Jan 1937–Dec 1939 36-Month	43.7°F (6.5°C)	43.0°F (6.1°C)	0.7°F	41st Warmest	Warmest since: 1934	2012, 2024
Jan 1936–Dec 1939 48-Month	43.2°F (6.2°C)	43.0°F (6.1°C)	0.2°F	68th Coolest	Coolest since: 1938	1917, 1918, 1919
Jan 1936–Dec 1939 48-Month	43.2°F (6.2°C)	43.0°F (6.1°C)	0.2°F	60th Warmest	Warmest since: 1935	2024
Jan 1935–Dec 1939 60-Month	43.1°F (6.2°C)	43.0°F (6.1°C)	0.1°F	66th Coolest	Coolest since: 1938	1907
Jan 1935–Dec 1939 60-Month	43.1°F (6.2°C)	43.0°F (6.1°C)	0.1°F	61st Warmest	Warmest since: 1935	2024

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings

Climate at a Glance Regional Rankings

Regional Rankings

Upper Midwest

December 1939 Average Temperature Rankings

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