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 2009

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2009
1-Month		78.93°F
(26.07°C)		77.81°F
(25.45°C)		1.12°F
(0.62°C)		89th Coolest
Coolest since:
1965
40th Warmest
Warmest since:
1998
Ties: 1930, 1997
Aug–Sep 2009
2-Month		81.77°F
(27.65°C)		81.48°F
(27.49°C)		0.29°F
(0.16°C)		70th Coolest
Coolest since:
1965
59th Warmest
Warmest since:
1998
Jul–Sep 2009
3-Month		82.95°F
(28.31°C)		83.21°F
(28.45°C)		-0.26°F
(-0.14°C)		46th Coolest
Coolest since:
1912
83rd Warmest
Warmest since:
1936
Ties: 1916, 1979
Jun–Sep 2009
4-Month		82.35°F
(27.97°C)		82.74°F
(28.19°C)		-0.39°F
(-0.22°C)		40th Coolest
Coolest since:
1915
89th Warmest
Warmest since:
1936
May–Sep 2009
5-Month		80.72°F
(27.07°C)		80.78°F
(27.10°C)		-0.06°F
(-0.03°C)		51st Coolest
Coolest since:
1915
78th Warmest
Warmest since:
1936
Ties: 1962
Apr–Sep 2009
6-Month		77.83°F
(25.46°C)		77.90°F
(25.50°C)		-0.07°F
(-0.04°C)		49th Coolest
Coolest since:
1907
80th Warmest
Warmest since:
2012
Mar–Sep 2009
7-Month		74.55°F
(23.64°C)		74.35°F
(23.53°C)		0.20°F
(0.11°C)		66th Coolest
Coolest since:
1912
63rd Warmest
Warmest since:
2012
Feb–Sep 2009
8-Month		71.29°F
(21.83°C)		70.66°F
(21.48°C)		0.63°F
(0.35°C)		85th Coolest
Coolest since:
1912
44th Warmest
Warmest since:
2012
Jan–Sep 2009
9-Month		68.07°F
(20.04°C)		67.30°F
(19.61°C)		0.77°F
(0.43°C)		88th Coolest
Coolest since:
1912
41st Warmest
Warmest since:
2012
Dec 2008–Sep 2009
10-Month		65.53°F
(18.63°C)		64.86°F
(18.26°C)		0.67°F
(0.37°C)		90th Coolest
Coolest since:
1912
38th Warmest
Warmest since:
2012
Nov 2008–Sep 2009
11-Month		64.56°F
(18.09°C)		63.75°F
(17.64°C)		0.81°F
(0.45°C)		97th Coolest
Coolest since:
1912
31st Warmest
Warmest since:
2012
Oct 2008–Sep 2009
12-Month		64.75°F
(18.19°C)		64.01°F
(17.78°C)		0.74°F
(0.41°C)		96th Coolest
Coolest since:
1912
32nd Warmest
Warmest since:
2012
Ties: 1946
Apr 2008–Sep 2009
18-Month		69.18°F
(20.66°C)		68.64°F
(20.36°C)		0.54°F
(0.30°C)		88th Coolest
Coolest since:
1912
40th Warmest
Warmest since:
2012
Ties: 2001
Oct 2007–Sep 2009
24-Month		64.75°F
(18.19°C)		64.00°F
(17.78°C)		0.75°F
(0.41°C)		96th Coolest
Coolest since:
1913
31st Warmest
Warmest since:
2017
Oct 2006–Sep 2009
36-Month		65.03°F
(18.35°C)		63.98°F
(17.77°C)		1.05°F
(0.58°C)		103rd Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
2018
Oct 2005–Sep 2009
48-Month		65.37°F
(18.54°C)		63.97°F
(17.76°C)		1.40°F
(0.78°C)		112th Coolest
Coolest since:
1915
13th Warmest
Warmest since:
2018
Oct 2004–Sep 2009
60-Month		65.37°F
(18.54°C)		63.96°F
(17.76°C)		1.41°F
(0.78°C)		112th Coolest
Coolest since:
1907
12th Warmest
Warmest since:
2016
Ties: 2004

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