National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Average Temperature Rankings, December 1940

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1940
1-Month		36.05°F
(2.25°C)		32.68°F
(0.38°C)		3.37°F
(1.87°C)		114th Coolest
Coolest since:
1983
15th Warmest
Warmest since:
2021
Nov–Dec 1940
2-Month		37.53°F
(3.07°C)		37.19°F
(2.88°C)		0.34°F
(0.19°C)		61st Coolest
Coolest since:
2000
68th Warmest
Warmest since:
2021
Ties: 1969
Oct–Dec 1940
3-Month		43.71°F
(6.51°C)		42.83°F
(6.02°C)		0.88°F
(0.49°C)		92nd Coolest
Coolest since:
1898
37th Warmest
Warmest since:
2021
Ties: 1918, 1950
Sep–Dec 1940
4-Month		49.12°F
(9.51°C)		48.34°F
(9.08°C)		0.78°F
(0.43°C)		88th Coolest
Coolest since:
1976
41st Warmest
Warmest since:
2021
Aug–Dec 1940
5-Month		53.72°F
(12.07°C)		53.09°F
(11.72°C)		0.63°F
(0.35°C)		85th Coolest
Coolest since:
1976
44th Warmest
Warmest since:
2021
Ties: 1987, 2002
Jul–Dec 1940
6-Month		57.13°F
(13.96°C)		56.51°F
(13.62°C)		0.62°F
(0.34°C)		89th Coolest
Coolest since:
1976
40th Warmest
Warmest since:
2021
Jun–Dec 1940
7-Month		58.91°F
(14.95°C)		58.22°F
(14.57°C)		0.69°F
(0.38°C)		90th Coolest
Coolest since:
1976
39th Warmest
Warmest since:
2021
May–Dec 1940
8-Month		59.15°F
(15.08°C)		58.47°F
(14.71°C)		0.68°F
(0.37°C)		89th Coolest
Coolest since:
1976
40th Warmest
Warmest since:
2021
Apr–Dec 1940
9-Month		58.16°F
(14.53°C)		57.64°F
(14.24°C)		0.52°F
(0.29°C)		84th Coolest
Coolest since:
1917
45th Warmest
Warmest since:
2021
Mar–Dec 1940
10-Month		56.50°F
(13.61°C)		56.03°F
(13.35°C)		0.47°F
(0.26°C)		82nd Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2012
Feb–Dec 1940
11-Month		54.44°F
(12.47°C)		54.01°F
(12.23°C)		0.43°F
(0.24°C)		83rd Coolest
Coolest since:
1917
46th Warmest
Warmest since:
2012
Jan–Dec 1940
12-Month		51.89°F
(11.05°C)		52.02°F
(11.12°C)		-0.13°F
(-0.07°C)		54th Coolest
Coolest since:
1917
75th Warmest
Warmest since:
2012
Ties: 1996
Jul 1939–Dec 1940
18-Month		54.02°F
(12.23°C)		53.52°F
(11.96°C)		0.50°F
(0.27°C)		88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2012, 2016
Jan 1939–Dec 1940
24-Month		52.57°F
(11.43°C)		52.02°F
(11.12°C)		0.55°F
(0.31°C)		89th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
2017
Jan 1938–Dec 1940
36-Month		52.78°F
(11.54°C)		52.01°F
(11.12°C)		0.77°F
(0.42°C)		97th Coolest
Coolest since:
1917
30th Warmest
Warmest since:
2017
Ties: 2009
Jan 1937–Dec 1940
48-Month		52.47°F
(11.37°C)		52.00°F
(11.11°C)		0.47°F
(0.26°C)		84th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
2018
Ties: 1994
Jan 1936–Dec 1940
60-Month		52.41°F
(11.34°C)		51.99°F
(11.11°C)		0.42°F
(0.23°C)		82nd Coolest
Coolest since:
1920
43rd Warmest
Warmest since:
2019, 2020
Ties: 1939

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