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 2021

View Period (Months):
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  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2021
1-Month
39.34°F
(4.08°C)
32.68°F
(0.38°C)
6.66°F
(3.70°C)
128th Coolest
Coolest since:
1983
1st Warmest
Warmest to Date
2021
Nov–Dec 2021
2-Month
42.21°F
(5.67°C)
37.19°F
(2.88°C)
5.02°F
(2.79°C)
128th Coolest
Coolest since:
2000
1st Warmest
Warmest to Date
2021
Oct–Dec 2021
3-Month
47.13°F
(8.41°C)
42.83°F
(6.02°C)
4.30°F
(2.39°C)
128th Coolest
Coolest since:
1898
1st Warmest
Warmest to Date
2021
Sep–Dec 2021
4-Month
52.30°F
(11.28°C)
48.34°F
(9.08°C)
3.96°F
(2.20°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2021
Aug–Dec 2021
5-Month
56.63°F
(13.68°C)
53.09°F
(11.72°C)
3.54°F
(1.96°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2021
Jul–Dec 2021
6-Month
59.76°F
(15.42°C)
56.51°F
(13.62°C)
3.25°F
(1.80°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2021
Jun–Dec 2021
7-Month
61.60°F
(16.44°C)
58.23°F
(14.57°C)
3.37°F
(1.87°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2021
May–Dec 2021
8-Month
61.44°F
(16.36°C)
58.47°F
(14.71°C)
2.97°F
(1.65°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2021
Apr–Dec 2021
9-Month
60.38°F
(15.77°C)
57.65°F
(14.25°C)
2.73°F
(1.52°C)
128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2021
Mar–Dec 2021
10-Month
58.89°F
(14.94°C)
56.03°F
(13.35°C)
2.86°F
(1.59°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2012
Feb–Dec 2021
11-Month
56.32°F
(13.51°C)
54.01°F
(12.23°C)
2.31°F
(1.28°C)
124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2012
Jan–Dec 2021
12-Month
54.51°F
(12.51°C)
52.02°F
(11.12°C)
2.49°F
(1.39°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2012
Jul 2020–Dec 2021
18-Month
55.93°F
(13.29°C)
53.52°F
(11.96°C)
2.41°F
(1.33°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2012, 2016
Jan 2020–Dec 2021
24-Month
54.44°F
(12.47°C)
52.02°F
(11.12°C)
2.42°F
(1.35°C)
125th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2017
Jan 2019–Dec 2021
36-Month
53.85°F
(12.14°C)
52.00°F
(11.11°C)
1.85°F
(1.03°C)
122nd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2017
Ties: 2007
Jan 2018–Dec 2021
48-Month
53.77°F
(12.09°C)
52.00°F
(11.11°C)
1.77°F
(0.98°C)
121st Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2018
Ties: 2001
Jan 2017–Dec 2021
60-Month
53.93°F
(12.18°C)
51.99°F
(11.11°C)
1.94°F
(1.07°C)
121st Coolest
Coolest since:
1920
4th Warmest
Warmest since:
2019, 2020

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