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 2015

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2015
1-Month		81.30°F
(27.39°C)		77.81°F
(25.45°C)		3.49°F
(1.94°C)		125th Coolest
Coolest since:
1965
4th Warmest
Warmest since:
1998
Aug–Sep 2015
2-Month		83.54°F
(28.63°C)		81.48°F
(27.49°C)		2.06°F
(1.14°C)		117th Coolest
Coolest since:
1965
12th Warmest
Warmest since:
1998
Jul–Sep 2015
3-Month		84.34°F
(29.08°C)		83.21°F
(28.45°C)		1.13°F
(0.63°C)		95th Coolest
Coolest since:
1912
34th Warmest
Warmest since:
1936
Jun–Sep 2015
4-Month		84.17°F
(28.98°C)		82.74°F
(28.19°C)		1.43°F
(0.79°C)		108th Coolest
Coolest since:
1915
21st Warmest
Warmest since:
1936
Ties: 1930
May–Sep 2015
5-Month		81.84°F
(27.69°C)		80.78°F
(27.10°C)		1.06°F
(0.59°C)		104th Coolest
Coolest since:
1915
25th Warmest
Warmest since:
1936
Apr–Sep 2015
6-Month		79.18°F
(26.21°C)		77.90°F
(25.50°C)		1.28°F
(0.71°C)		106th Coolest
Coolest since:
1907
23rd Warmest
Warmest since:
2012
Mar–Sep 2015
7-Month		76.12°F
(24.51°C)		74.35°F
(23.53°C)		1.77°F
(0.98°C)		117th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2012
Ties: 1988
Feb–Sep 2015
8-Month		72.15°F
(22.31°C)		70.66°F
(21.48°C)		1.49°F
(0.83°C)		112th Coolest
Coolest since:
1912
17th Warmest
Warmest since:
2012
Ties: 2021
Jan–Sep 2015
9-Month		68.94°F
(20.52°C)		67.30°F
(19.61°C)		1.64°F
(0.91°C)		113th Coolest
Coolest since:
1912
16th Warmest
Warmest since:
2012
Dec 2014–Sep 2015
10-Month		66.58°F
(19.21°C)		64.86°F
(18.26°C)		1.72°F
(0.95°C)		115th Coolest
Coolest since:
1912
13th Warmest
Warmest since:
2012
Nov 2014–Sep 2015
11-Month		65.10°F
(18.39°C)		63.75°F
(17.64°C)		1.35°F
(0.75°C)		111th Coolest
Coolest since:
1912
17th Warmest
Warmest since:
2012
Oct 2014–Sep 2015
12-Month		65.46°F
(18.59°C)		64.01°F
(17.78°C)		1.45°F
(0.81°C)		113th Coolest
Coolest since:
1912
15th Warmest
Warmest since:
2012
Apr 2014–Sep 2015
18-Month		69.68°F
(20.93°C)		68.64°F
(20.36°C)		1.04°F
(0.57°C)		107th Coolest
Coolest since:
1912
21st Warmest
Warmest since:
2012
Oct 2013–Sep 2015
24-Month		64.66°F
(18.14°C)		64.00°F
(17.78°C)		0.66°F
(0.36°C)		92nd Coolest
Coolest since:
1913
35th Warmest
Warmest since:
2017
Oct 2012–Sep 2015
36-Month		64.73°F
(18.18°C)		63.98°F
(17.77°C)		0.75°F
(0.41°C)		93rd Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2018
Oct 2011–Sep 2015
48-Month		65.48°F
(18.60°C)		63.97°F
(17.76°C)		1.51°F
(0.84°C)		116th Coolest
Coolest since:
1915
9th Warmest
Warmest since:
2018
Oct 2010–Sep 2015
60-Month		65.36°F
(18.53°C)		63.96°F
(17.76°C)		1.40°F
(0.77°C)		110th Coolest
Coolest since:
1907
14th Warmest
Warmest since:
2016

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