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, September 2015

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
September 2015
1-Month 		68.54°F
(20.30°C)		 64.86°F
(18.26°C)		 3.68°F
(2.04°C)		 127th Coolest
Coolest since:
 1965
2nd Warmest
Warmest since:
 1998
Aug–Sep 2015
2-Month 		70.75°F
(21.53°C)		 68.48°F
(20.27°C)		 2.27°F
(1.26°C)		 124th Coolest
Coolest since:
 1974
5th Warmest
Warmest since:
 1998
Jul–Sep 2015
3-Month 		71.80°F
(22.11°C)		 70.19°F
(21.22°C)		 1.61°F
(0.89°C)		 114th Coolest
Coolest since:
 1950
15th Warmest
Warmest since:
 2022
Jun–Sep 2015
4-Month 		71.70°F
(22.06°C)		 69.77°F
(20.98°C)		 1.93°F
(1.08°C)		 121st Coolest
Coolest since:
 1903
8th Warmest
Warmest since:
 2021, 2022
May–Sep 2015
5-Month 		69.52°F
(20.84°C)		 67.85°F
(19.92°C)		 1.67°F
(0.92°C)		 119th Coolest
Coolest since:
 1907
10th Warmest
Warmest since:
 2018
Apr–Sep 2015
6-Month 		66.81°F
(19.34°C)		 65.05°F
(18.36°C)		 1.76°F
(0.98°C)		 120th Coolest
Coolest since:
 1907
9th Warmest
Warmest since:
 2012
Mar–Sep 2015
7-Month 		63.75°F
(17.64°C)		 61.69°F
(16.49°C)		 2.06°F
(1.15°C)		 124th Coolest
Coolest since:
 1912
5th Warmest
Warmest since:
 2012
Feb–Sep 2015
8-Month 		59.91°F
(15.51°C)		 58.21°F
(14.56°C)		 1.70°F
(0.95°C)		 118th Coolest
Coolest since:
 1917
11th Warmest
Warmest since:
 2012
Jan–Sep 2015
9-Month 		56.92°F
(13.84°C)		 55.08°F
(12.82°C)		 1.84°F
(1.02°C)		 116th Coolest
Coolest since:
 1912
13th Warmest
Warmest since:
 2012
Dec 2014–Sep 2015
10-Month 		54.91°F
(12.73°C)		 52.85°F
(11.58°C)		 2.06°F
(1.15°C)		 118th Coolest
Coolest since:
 1917
10th Warmest
Warmest since:
 2012
Nov 2014–Sep 2015
11-Month 		53.49°F
(11.94°C)		 51.84°F
(11.02°C)		 1.65°F
(0.92°C)		 113th Coolest
Coolest since:
 1912
15th Warmest
Warmest since:
 2012
Oct 2014–Sep 2015
12-Month 		53.78°F
(12.10°C)		 52.03°F
(11.13°C)		 1.75°F
(0.97°C)		 116th Coolest
Coolest since:
 1912
12th Warmest
Warmest since:
 2012
Apr 2014–Sep 2015
18-Month 		57.76°F
(14.31°C)		 56.37°F
(13.54°C)		 1.39°F
(0.77°C)		 113th Coolest
Coolest since:
 1917
15th Warmest
Warmest since:
 2012
Oct 2013–Sep 2015
24-Month 		52.87°F
(11.59°C)		 52.02°F
(11.12°C)		 0.85°F
(0.47°C)		 98th Coolest
Coolest since:
 1913, 1918
29th Warmest
Warmest since:
 2017
Ties: 1998
Oct 2012–Sep 2015
36-Month 		52.94°F
(11.63°C)		 52.00°F
(11.11°C)		 0.94°F
(0.52°C)		 101st Coolest
Coolest since:
 1917
25th Warmest
Warmest since:
 2018
Oct 2011–Sep 2015
48-Month 		53.53°F
(11.96°C)		 51.99°F
(11.11°C)		 1.54°F
(0.85°C)		 114th Coolest
Coolest since:
 1918
11th Warmest
Warmest since:
 2018
Oct 2010–Sep 2015
60-Month 		53.41°F
(11.89°C)		 51.98°F
(11.10°C)		 1.43°F
(0.79°C)		 111th Coolest
Coolest since:
 1920
13th Warmest
Warmest since:
 2020

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