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.

Minimum Temperature Rankings, December 2017

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 2017
1-Month 		23.74°F
(-4.59°C)		 22.60°F
(-5.22°C)		 1.14°F
(0.63°C)		 76th Coolest
Coolest since:
 1909
53rd Warmest
Warmest since:
 2015
Nov–Dec 2017
2-Month 		28.80°F
(-1.78°C)		 26.63°F
(-2.98°C)		 2.17°F
(1.20°C)		 109th Coolest
Coolest since:
 1976
20th Warmest
Warmest since:
 2015
Oct–Dec 2017
3-Month 		33.51°F
(0.84°C)		 31.56°F
(-0.24°C)		 1.95°F
(1.08°C)		 115th Coolest
Coolest since:
 1976
14th Warmest
Warmest since:
 2015
Ties: 2003
Sep–Dec 2017
4-Month 		38.58°F
(3.66°C)		 36.65°F
(2.58°C)		 1.93°F
(1.08°C)		 118th Coolest
Coolest since:
 1976
11th Warmest
Warmest since:
 2015
Aug–Dec 2017
5-Month 		42.81°F
(6.01°C)		 41.13°F
(5.07°C)		 1.68°F
(0.94°C)		 116th Coolest
Coolest since:
 1976
13th Warmest
Warmest since:
 2015
Jul–Dec 2017
6-Month 		46.15°F
(7.86°C)		 44.36°F
(6.87°C)		 1.79°F
(0.99°C)		 118th Coolest
Coolest since:
 1976
11th Warmest
Warmest since:
 2021
Jun–Dec 2017
7-Month 		47.77°F
(8.76°C)		 45.98°F
(7.77°C)		 1.79°F
(0.99°C)		 119th Coolest
Coolest since:
 1976
10th Warmest
Warmest since:
 2021
May–Dec 2017
8-Month 		47.78°F
(8.77°C)		 46.16°F
(7.87°C)		 1.62°F
(0.90°C)		 118th Coolest
Coolest since:
 1976
11th Warmest
Warmest since:
 2015
Apr–Dec 2017
9-Month 		47.10°F
(8.39°C)		 45.32°F
(7.40°C)		 1.78°F
(0.99°C)		 121st Coolest
Coolest since:
 1917
8th Warmest
Warmest since:
 2015
Mar–Dec 2017
10-Month 		45.84°F
(7.69°C)		 43.79°F
(6.55°C)		 2.05°F
(1.14°C)		 123rd Coolest
Coolest since:
 1917
6th Warmest
Warmest since:
 2015
Feb–Dec 2017
11-Month 		44.42°F
(6.90°C)		 41.88°F
(5.49°C)		 2.54°F
(1.41°C)		 125th Coolest
Coolest since:
 1917
4th Warmest
Warmest since:
 2016
Jan–Dec 2017
12-Month 		42.74°F
(5.97°C)		 40.03°F
(4.46°C)		 2.71°F
(1.51°C)		 125th Coolest
Coolest since:
 1917
4th Warmest
Warmest since:
 2016
Jul 2016–Dec 2017
18-Month 		44.26°F
(6.81°C)		 41.48°F
(5.27°C)		 2.78°F
(1.54°C)		 126th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2016
Jan 2016–Dec 2017
24-Month 		42.94°F
(6.08°C)		 40.04°F
(4.47°C)		 2.90°F
(1.61°C)		 127th Coolest
Coolest since:
 1917
1st Warmest
Warmest to Date
 2017
Jan 2015–Dec 2017
36-Month 		42.86°F
(6.03°C)		 40.02°F
(4.46°C)		 2.84°F
(1.57°C)		 126th Coolest
Coolest since:
 1918
1st Warmest
Warmest to Date
 2017
Jan 2014–Dec 2017
48-Month 		42.33°F
(5.74°C)		 40.01°F
(4.45°C)		 2.32°F
(1.29°C)		 124th Coolest
Coolest since:
 1919
2nd Warmest
Warmest to Date
 2018
Jan 2013–Dec 2017
60-Month 		42.00°F
(5.56°C)		 40.00°F
(4.44°C)		 2.00°F
(1.12°C)		 119th Coolest
Coolest since:
 1920
6th Warmest
Warmest since:
 2019

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