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 2018

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2018
1-Month
79.36°F
(26.31°C)
77.81°F
(25.45°C)
1.55°F
(0.86°C)
98th Coolest
Coolest since:
1965
31st Warmest
Warmest since:
1998
Aug–Sep 2018
2-Month
82.66°F
(28.14°C)
81.48°F
(27.49°C)
1.18°F
(0.65°C)
98th Coolest
Coolest since:
1965
31st Warmest
Warmest since:
1998
Jul–Sep 2018
3-Month
84.51°F
(29.17°C)
83.20°F
(28.44°C)
1.31°F
(0.73°C)
100th Coolest
Coolest since:
1912
29th Warmest
Warmest since:
1936
Jun–Sep 2018
4-Month
84.43°F
(29.13°C)
82.75°F
(28.19°C)
1.68°F
(0.94°C)
114th Coolest
Coolest since:
1915
15th Warmest
Warmest since:
1936
May–Sep 2018
5-Month
83.22°F
(28.46°C)
80.78°F
(27.10°C)
2.44°F
(1.36°C)
125th Coolest
Coolest since:
1915
4th Warmest
Warmest since:
1936
Apr–Sep 2018
6-Month
79.66°F
(26.48°C)
77.90°F
(25.50°C)
1.76°F
(0.98°C)
121st Coolest
Coolest since:
1907
8th Warmest
Warmest since:
2012
Mar–Sep 2018
7-Month
75.99°F
(24.44°C)
74.34°F
(23.52°C)
1.65°F
(0.92°C)
114th Coolest
Coolest since:
1912
15th Warmest
Warmest since:
2012
Ties: 2020
Feb–Sep 2018
8-Month
72.33°F
(22.41°C)
70.66°F
(21.48°C)
1.67°F
(0.93°C)
117th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2012
Jan–Sep 2018
9-Month
69.09°F
(20.61°C)
67.31°F
(19.62°C)
1.78°F
(0.99°C)
117th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2012
Dec 2017–Sep 2018
10-Month
66.66°F
(19.26°C)
64.85°F
(18.25°C)
1.81°F
(1.01°C)
116th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2012
Nov 2017–Sep 2018
11-Month
65.71°F
(18.73°C)
63.76°F
(17.64°C)
1.95°F
(1.09°C)
118th Coolest
Coolest since:
1912
10th Warmest
Warmest since:
2012
Oct 2017–Sep 2018
12-Month
65.94°F
(18.86°C)
64.01°F
(17.78°C)
1.93°F
(1.08°C)
117th Coolest
Coolest since:
1912
11th Warmest
Warmest since:
2012
Apr 2017–Sep 2018
18-Month
70.29°F
(21.27°C)
68.64°F
(20.36°C)
1.65°F
(0.91°C)
117th Coolest
Coolest since:
1912
11th Warmest
Warmest since:
2012
Oct 2016–Sep 2018
24-Month
66.25°F
(19.03°C)
63.99°F
(17.77°C)
2.26°F
(1.26°C)
121st Coolest
Coolest since:
1913
6th Warmest
Warmest since:
2017
Oct 2015–Sep 2018
36-Month
66.41°F
(19.12°C)
63.98°F
(17.77°C)
2.43°F
(1.35°C)
125th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2018
Oct 2014–Sep 2018
48-Month
66.17°F
(18.98°C)
63.97°F
(17.76°C)
2.20°F
(1.22°C)
124th Coolest
Coolest since:
1915
1st Warmest
Warmest to Date
2018
Oct 2013–Sep 2018
60-Month
65.71°F
(18.73°C)
63.96°F
(17.76°C)
1.75°F
(0.97°C)
121st Coolest
Coolest since:
1907
3rd Warmest
Warmest since:
2016

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