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, September 2020

View Period (Months):
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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
September 2020
1-Month 		52.99°F
(11.66°C)		 51.90°F
(11.06°C)		 1.09°F
(0.60°C)		 93rd Coolest
Coolest since:
 1918
36th Warmest
Warmest since:
 2019
Aug–Sep 2020
2-Month 		57.28°F
(14.04°C)		 55.48°F
(13.04°C)		 1.80°F
(1.00°C)		 118th Coolest
Coolest since:
 1974
11th Warmest
Warmest since:
 2019
Jul–Sep 2020
3-Month 		59.15°F
(15.08°C)		 57.17°F
(13.98°C)		 1.98°F
(1.10°C)		 120th Coolest
Coolest since:
 1924
9th Warmest
Warmest since:
 2022
Jun–Sep 2020
4-Month 		58.74°F
(14.86°C)		 56.78°F
(13.77°C)		 1.96°F
(1.09°C)		 119th Coolest
Coolest since:
 1903
10th Warmest
Warmest since:
 2021
May–Sep 2020
5-Month 		56.67°F
(13.71°C)		 54.91°F
(12.73°C)		 1.76°F
(0.98°C)		 119th Coolest
Coolest since:
 1907, 1924
10th Warmest
Warmest since:
 2018
Ties: 2007
Apr–Sep 2020
6-Month 		53.58°F
(11.99°C)		 52.20°F
(11.22°C)		 1.38°F
(0.77°C)		 112th Coolest
Coolest since:
 1907
17th Warmest
Warmest since:
 2018
Ties: 2011
Mar–Sep 2020
7-Month 		50.99°F
(10.55°C)		 49.03°F
(9.46°C)		 1.96°F
(1.09°C)		 121st Coolest
Coolest since:
 1917
8th Warmest
Warmest since:
 2012
Feb–Sep 2020
8-Month 		47.76°F
(8.76°C)		 45.74°F
(7.63°C)		 2.02°F
(1.13°C)		 123rd Coolest
Coolest since:
 1917
6th Warmest
Warmest since:
 2012
Ties: 2000
Jan–Sep 2020
9-Month 		45.35°F
(7.42°C)		 42.86°F
(6.03°C)		 2.49°F
(1.39°C)		 124th Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2012
Dec 2019–Sep 2020
10-Month 		43.49°F
(6.38°C)		 40.84°F
(4.91°C)		 2.65°F
(1.47°C)		 123rd Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2016
Nov 2019–Sep 2020
11-Month 		42.26°F
(5.70°C)		 39.92°F
(4.40°C)		 2.34°F
(1.30°C)		 122nd Coolest
Coolest since:
 1917
6th Warmest
Warmest since:
 2016
Oct 2019–Sep 2020
12-Month 		42.06°F
(5.59°C)		 40.05°F
(4.47°C)		 2.01°F
(1.12°C)		 117th Coolest
Coolest since:
 1917
11th Warmest
Warmest since:
 2016
Ties: 2018
Apr 2019–Sep 2020
18-Month 		46.08°F
(7.82°C)		 44.10°F
(6.72°C)		 1.98°F
(1.10°C)		 123rd Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2016
Oct 2018–Sep 2020
24-Month 		41.77°F
(5.43°C)		 40.04°F
(4.47°C)		 1.73°F
(0.96°C)		 115th Coolest
Coolest since:
 1918
12th Warmest
Warmest since:
 2017
Ties: 2019
Oct 2017–Sep 2020
36-Month 		41.87°F
(5.48°C)		 40.03°F
(4.46°C)		 1.84°F
(1.02°C)		 119th Coolest
Coolest since:
 1918
7th Warmest
Warmest since:
 2017, 2018
Ties: 2021
Oct 2016–Sep 2020
48-Month 		42.18°F
(5.66°C)		 40.01°F
(4.45°C)		 2.17°F
(1.21°C)		 122nd Coolest
Coolest since:
 1918
3rd Warmest
Warmest since:
 2018
Oct 2015–Sep 2020
60-Month 		42.43°F
(5.79°C)		 40.00°F
(4.44°C)		 2.43°F
(1.35°C)		 123rd Coolest
Coolest since:
 1920
1st Warmest
Warmest since:
 2019, 2020
Ties: 2019

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