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 2011

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2011
1-Month		79.43°F
(26.35°C)		77.81°F
(25.45°C)		1.62°F
(0.90°C)		102nd Coolest
Coolest since:
1965
27th Warmest
Warmest since:
1998
Aug–Sep 2011
2-Month		83.90°F
(28.83°C)		81.48°F
(27.49°C)		2.42°F
(1.34°C)		126th Coolest
Coolest since:
1965
3rd Warmest
Warmest since:
1998
Jul–Sep 2011
3-Month		85.56°F
(29.76°C)		83.21°F
(28.45°C)		2.35°F
(1.31°C)		124th Coolest
Coolest since:
1912
5th Warmest
Warmest since:
1936
Jun–Sep 2011
4-Month		84.85°F
(29.36°C)		82.74°F
(28.19°C)		2.11°F
(1.17°C)		122nd Coolest
Coolest since:
1915
7th Warmest
Warmest since:
1936
May–Sep 2011
5-Month		82.12°F
(27.84°C)		80.78°F
(27.10°C)		1.34°F
(0.74°C)		108th Coolest
Coolest since:
1915
21st Warmest
Warmest since:
1936
Apr–Sep 2011
6-Month		79.13°F
(26.18°C)		77.90°F
(25.50°C)		1.23°F
(0.68°C)		105th Coolest
Coolest since:
1907
24th Warmest
Warmest since:
2012
Mar–Sep 2011
7-Month		75.58°F
(24.21°C)		74.35°F
(23.53°C)		1.23°F
(0.68°C)		105th Coolest
Coolest since:
1912
24th Warmest
Warmest since:
2012
Feb–Sep 2011
8-Month		71.69°F
(22.05°C)		70.66°F
(21.48°C)		1.03°F
(0.57°C)		96th Coolest
Coolest since:
1912
33rd Warmest
Warmest since:
2012
Jan–Sep 2011
9-Month		68.17°F
(20.09°C)		67.30°F
(19.61°C)		0.87°F
(0.48°C)		95th Coolest
Coolest since:
1912
34th Warmest
Warmest since:
2012
Ties: 1930, 2003
Dec 2010–Sep 2011
10-Month		65.56°F
(18.64°C)		64.86°F
(18.26°C)		0.70°F
(0.38°C)		91st Coolest
Coolest since:
1912
37th Warmest
Warmest since:
2012
Nov 2010–Sep 2011
11-Month		64.49°F
(18.05°C)		63.75°F
(17.64°C)		0.74°F
(0.41°C)		93rd Coolest
Coolest since:
1912
35th Warmest
Warmest since:
2012
Oct 2010–Sep 2011
12-Month		64.90°F
(18.28°C)		64.01°F
(17.78°C)		0.89°F
(0.50°C)		101st Coolest
Coolest since:
1912
27th Warmest
Warmest since:
2012
Apr 2010–Sep 2011
18-Month		69.62°F
(20.90°C)		68.64°F
(20.36°C)		0.98°F
(0.54°C)		105th Coolest
Coolest since:
1912
23rd Warmest
Warmest since:
2012
Oct 2009–Sep 2011
24-Month		64.46°F
(18.03°C)		64.00°F
(17.78°C)		0.46°F
(0.25°C)		86th Coolest
Coolest since:
1913
41st Warmest
Warmest since:
2017
Oct 2008–Sep 2011
36-Month		64.55°F
(18.08°C)		63.98°F
(17.77°C)		0.57°F
(0.31°C)		88th Coolest
Coolest since:
1917
38th Warmest
Warmest since:
2018
Ties: 1933
Oct 2007–Sep 2011
48-Month		64.60°F
(18.11°C)		63.97°F
(17.76°C)		0.63°F
(0.35°C)		90th Coolest
Coolest since:
1915
35th Warmest
Warmest since:
2018
Ties: 1941
Oct 2006–Sep 2011
60-Month		64.80°F
(18.22°C)		63.96°F
(17.76°C)		0.84°F
(0.46°C)		93rd Coolest
Coolest since:
1907
31st Warmest
Warmest since:
2016
Ties: 1990

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