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.

Maximum Temperature Rankings, September 2017

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2017
1-Month		78.76°F
(25.98°C)		77.81°F
(25.45°C)		0.95°F
(0.53°C)		82nd Coolest
Coolest since:
1965
47th Warmest
Warmest since:
1998
Aug–Sep 2017
2-Month		81.52°F
(27.51°C)		81.48°F
(27.49°C)		0.04°F
(0.02°C)		57th Coolest
Coolest since:
1965
72nd Warmest
Warmest since:
1998
Ties: 1981
Jul–Sep 2017
3-Month		83.86°F
(28.81°C)		83.21°F
(28.45°C)		0.65°F
(0.36°C)		86th Coolest
Coolest since:
1912
43rd Warmest
Warmest since:
1936
Ties: 2006
Jun–Sep 2017
4-Month		83.71°F
(28.73°C)		82.74°F
(28.19°C)		0.97°F
(0.54°C)		94th Coolest
Coolest since:
1915
35th Warmest
Warmest since:
1936
May–Sep 2017
5-Month		81.62°F
(27.57°C)		80.78°F
(27.10°C)		0.84°F
(0.47°C)		98th Coolest
Coolest since:
1915
31st Warmest
Warmest since:
1936
Apr–Sep 2017
6-Month		79.00°F
(26.11°C)		77.90°F
(25.50°C)		1.10°F
(0.61°C)		100th Coolest
Coolest since:
1907
29th Warmest
Warmest since:
2012
Mar–Sep 2017
7-Month		75.97°F
(24.43°C)		74.35°F
(23.53°C)		1.62°F
(0.90°C)		112th Coolest
Coolest since:
1912
17th Warmest
Warmest since:
2012
Feb–Sep 2017
8-Month		72.99°F
(22.77°C)		70.66°F
(21.48°C)		2.33°F
(1.29°C)		124th Coolest
Coolest since:
1912
5th Warmest
Warmest since:
2012
Jan–Sep 2017
9-Month		69.63°F
(20.91°C)		67.30°F
(19.61°C)		2.33°F
(1.30°C)		123rd Coolest
Coolest since:
1912
6th Warmest
Warmest since:
2012
Dec 2016–Sep 2017
10-Month		66.94°F
(19.41°C)		64.86°F
(18.26°C)		2.08°F
(1.15°C)		120th Coolest
Coolest since:
1912
8th Warmest
Warmest since:
2012
Nov 2016–Sep 2017
11-Month		66.26°F
(19.03°C)		63.75°F
(17.64°C)		2.51°F
(1.39°C)		121st Coolest
Coolest since:
1912
7th Warmest
Warmest since:
2012
Oct 2016–Sep 2017
12-Month		66.57°F
(19.21°C)		64.01°F
(17.78°C)		2.56°F
(1.43°C)		122nd Coolest
Coolest since:
1912
6th Warmest
Warmest since:
2012
Apr 2016–Sep 2017
18-Month		70.83°F
(21.57°C)		68.64°F
(20.36°C)		2.19°F
(1.21°C)		123rd Coolest
Coolest since:
1912
5th Warmest
Warmest since:
2012
Oct 2015–Sep 2017
24-Month		66.64°F
(19.24°C)		64.00°F
(17.78°C)		2.64°F
(1.46°C)		126th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2017
Oct 2014–Sep 2017
36-Month		66.25°F
(19.03°C)		63.98°F
(17.77°C)		2.27°F
(1.26°C)		124th Coolest
Coolest since:
1917
2nd Warmest
Warmest to Date
2018
Oct 2013–Sep 2017
48-Month		65.65°F
(18.69°C)		63.97°F
(17.76°C)		1.68°F
(0.93°C)		121st Coolest
Coolest since:
1915
4th Warmest
Warmest since:
2018
Oct 2012–Sep 2017
60-Month		65.49°F
(18.61°C)		63.96°F
(17.76°C)		1.53°F
(0.85°C)		116th Coolest
Coolest since:
1907
8th Warmest
Warmest since:
2016
Ties: 2003

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