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.

Maximum Temperature Rankings, December 2021

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 2021
1-Month		49.96°F
(9.98°C)		42.76°F
(5.98°C)		7.20°F
(4.00°C)		128th Coolest
Coolest since:
1983
1st Warmest
Warmest to Date
2021
Nov–Dec 2021
2-Month		53.41°F
(11.89°C)		47.74°F
(8.74°C)		5.67°F
(3.15°C)		127th Coolest
Coolest since:
2000
2nd Warmest
Warmest since:
1999
Oct–Dec 2021
3-Month		58.45°F
(14.69°C)		54.09°F
(12.27°C)		4.36°F
(2.42°C)		127th Coolest
Coolest since:
1972
2nd Warmest
Warmest since:
1999
Sep–Dec 2021
4-Month		64.12°F
(17.84°C)		60.02°F
(15.57°C)		4.10°F
(2.27°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
Aug–Dec 2021
5-Month		68.56°F
(20.31°C)		65.04°F
(18.36°C)		3.52°F
(1.95°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
Jul–Dec 2021
6-Month		71.74°F
(22.08°C)		68.65°F
(20.36°C)		3.09°F
(1.72°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
Jun–Dec 2021
7-Month		73.72°F
(23.18°C)		70.46°F
(21.37°C)		3.26°F
(1.81°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
May–Dec 2021
8-Month		73.62°F
(23.12°C)		70.77°F
(21.54°C)		2.85°F
(1.58°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
Apr–Dec 2021
9-Month		72.65°F
(22.58°C)		69.96°F
(21.09°C)		2.69°F
(1.49°C)		128th Coolest
Coolest since:
1972
1st Warmest
Warmest to Date
2021
Mar–Dec 2021
10-Month		71.17°F
(21.76°C)		68.27°F
(20.15°C)		2.90°F
(1.61°C)		127th Coolest
Coolest since:
1912
2nd Warmest
Warmest since:
2012
Feb–Dec 2021
11-Month		68.41°F
(20.23°C)		66.14°F
(18.97°C)		2.27°F
(1.26°C)		124th Coolest
Coolest since:
1912
5th Warmest
Warmest since:
2012
Jan–Dec 2021
12-Month		66.38°F
(19.10°C)		64.00°F
(17.78°C)		2.38°F
(1.32°C)		124th Coolest
Coolest since:
1912
5th Warmest
Warmest since:
2012
Jul 2020–Dec 2021
18-Month		67.97°F
(19.98°C)		65.55°F
(18.64°C)		2.42°F
(1.34°C)		124th Coolest
Coolest since:
1912
4th Warmest
Warmest since:
2012
Jan 2020–Dec 2021
24-Month		66.35°F
(19.08°C)		64.00°F
(17.78°C)		2.35°F
(1.30°C)		124th Coolest
Coolest since:
1913
4th Warmest
Warmest since:
2017
Jan 2019–Dec 2021
36-Month		65.60°F
(18.67°C)		63.98°F
(17.77°C)		1.62°F
(0.90°C)		117th Coolest
Coolest since:
1905
10th Warmest
Warmest since:
2017
Jan 2018–Dec 2021
48-Month		65.47°F
(18.59°C)		63.97°F
(17.76°C)		1.50°F
(0.83°C)		116th Coolest
Coolest since:
1906
10th Warmest
Warmest since:
2018
Jan 2017–Dec 2021
60-Month		65.64°F
(18.69°C)		63.96°F
(17.76°C)		1.68°F
(0.93°C)		120th Coolest
Coolest since:
1907
5th Warmest
Warmest since:
2016

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