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, October 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
October 2021
1-Month 		45.37°F
(7.43°C)		 41.41°F
(5.23°C)		 3.96°F
(2.20°C)		 126th Coolest
Coolest since:
 1917
3rd Warmest
Warmest since:
 1947
Ties: 2015
Sep–Oct 2021
2-Month 		49.92°F
(9.96°C)		 46.65°F
(8.14°C)		 3.27°F
(1.82°C)		 126th Coolest
Coolest since:
 1917
3rd Warmest
Warmest since:
 2015
Aug–Oct 2021
3-Month 		53.83°F
(12.13°C)		 50.79°F
(10.44°C)		 3.04°F
(1.69°C)		 127th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2016
Jul–Oct 2021
4-Month 		56.17°F
(13.43°C)		 53.23°F
(11.79°C)		 2.94°F
(1.64°C)		 128th Coolest
Coolest since:
 1976
1st Warmest
Warmest to Date
 2021
Jun–Oct 2021
5-Month 		56.85°F
(13.81°C)		 53.71°F
(12.06°C)		 3.14°F
(1.75°C)		 128th Coolest
Coolest since:
 1917
1st Warmest
Warmest to Date
 2021
May–Oct 2021
6-Month 		55.34°F
(12.97°C)		 52.66°F
(11.48°C)		 2.68°F
(1.49°C)		 127th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2018
Apr–Oct 2021
7-Month 		52.98°F
(11.66°C)		 50.65°F
(10.36°C)		 2.33°F
(1.30°C)		 126th Coolest
Coolest since:
 1917
3rd Warmest
Warmest since:
 2015
Mar–Oct 2021
8-Month 		50.50°F
(10.28°C)		 48.07°F
(8.93°C)		 2.43°F
(1.35°C)		 125th Coolest
Coolest since:
 1917
4th Warmest
Warmest since:
 2016
Feb–Oct 2021
9-Month 		47.16°F
(8.42°C)		 45.26°F
(7.37°C)		 1.90°F
(1.05°C)		 121st Coolest
Coolest since:
 1917
8th Warmest
Warmest since:
 2016
Jan–Oct 2021
10-Month 		44.97°F
(7.21°C)		 42.72°F
(5.96°C)		 2.25°F
(1.25°C)		 124th Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2016
Ties: 2020
Dec 2020–Oct 2021
11-Month 		43.13°F
(6.18°C)		 40.89°F
(4.94°C)		 2.24°F
(1.24°C)		 121st Coolest
Coolest since:
 1917
7th Warmest
Warmest since:
 2016
Nov 2020–Oct 2021
12-Month 		42.40°F
(5.78°C)		 40.04°F
(4.47°C)		 2.36°F
(1.31°C)		 123rd Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2016
May 2020–Oct 2021
18-Month 		46.32°F
(7.96°C)		 44.25°F
(6.81°C)		 2.07°F
(1.15°C)		 123rd Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2016
Nov 2019–Oct 2021
24-Month 		42.30°F
(5.72°C)		 40.04°F
(4.47°C)		 2.26°F
(1.25°C)		 123rd Coolest
Coolest since:
 1917, 1918
4th Warmest
Warmest since:
 2017
Nov 2018–Oct 2021
36-Month 		41.94°F
(5.52°C)		 40.02°F
(4.46°C)		 1.92°F
(1.06°C)		 119th Coolest
Coolest since:
 1918
7th Warmest
Warmest since:
 2017
Nov 2017–Oct 2021
48-Month 		41.97°F
(5.54°C)		 40.01°F
(4.45°C)		 1.96°F
(1.09°C)		 120th Coolest
Coolest since:
 1918
5th Warmest
Warmest since:
 2018
Nov 2016–Oct 2021
60-Month 		42.16°F
(5.64°C)		 40.00°F
(4.44°C)		 2.16°F
(1.20°C)		 120th Coolest
Coolest since:
 1920
4th Warmest
Warmest since:
 2019, 2020

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