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.

Average Temperature Rankings, September 2021

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
September 2021
1-Month
67.80°F
(19.89°C)
64.86°F
(18.26°C)
2.94°F
(1.63°C)
123rd Coolest
Coolest since:
1965
6th Warmest
Warmest since:
1998
Aug–Sep 2021
2-Month
70.89°F
(21.61°C)
68.48°F
(20.27°C)
2.41°F
(1.34°C)
125th Coolest
Coolest since:
1974
4th Warmest
Warmest since:
1998
Jul–Sep 2021
3-Month
72.40°F
(22.44°C)
70.19°F
(21.22°C)
2.21°F
(1.22°C)
124th Coolest
Coolest since:
1950
5th Warmest
Warmest since:
2022
Jun–Sep 2021
4-Month
72.45°F
(22.47°C)
69.77°F
(20.98°C)
2.68°F
(1.49°C)
127th Coolest
Coolest since:
1903
2nd Warmest
Warmest to Date
2022
May–Sep 2021
5-Month
70.03°F
(21.13°C)
67.85°F
(19.92°C)
2.18°F
(1.21°C)
124th Coolest
Coolest since:
1907
5th Warmest
Warmest since:
2018
Apr–Sep 2021
6-Month
67.00°F
(19.44°C)
65.05°F
(18.36°C)
1.95°F
(1.08°C)
123rd Coolest
Coolest since:
1907
6th Warmest
Warmest since:
2012
Mar–Sep 2021
7-Month
63.93°F
(17.74°C)
61.69°F
(16.49°C)
2.24°F
(1.25°C)
126th Coolest
Coolest since:
1912
3rd Warmest
Warmest since:
2012
Feb–Sep 2021
8-Month
59.77°F
(15.43°C)
58.21°F
(14.56°C)
1.56°F
(0.87°C)
113th Coolest
Coolest since:
1917
16th Warmest
Warmest since:
2012
Jan–Sep 2021
9-Month
56.97°F
(13.87°C)
55.08°F
(12.82°C)
1.89°F
(1.05°C)
119th Coolest
Coolest since:
1912
10th Warmest
Warmest since:
2012
Dec 2020–Sep 2021
10-Month
54.84°F
(12.69°C)
52.85°F
(11.58°C)
1.99°F
(1.11°C)
117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2012
Nov 2020–Sep 2021
11-Month
54.07°F
(12.26°C)
51.84°F
(11.02°C)
2.23°F
(1.24°C)
121st Coolest
Coolest since:
1912
7th Warmest
Warmest since:
2012
Oct 2020–Sep 2021
12-Month
54.09°F
(12.27°C)
52.03°F
(11.13°C)
2.06°F
(1.14°C)
120th Coolest
Coolest since:
1912
8th Warmest
Warmest since:
2012
Apr 2020–Sep 2021
18-Month
58.19°F
(14.55°C)
56.37°F
(13.54°C)
1.82°F
(1.01°C)
121st Coolest
Coolest since:
1917
7th Warmest
Warmest since:
2012
Oct 2019–Sep 2021
24-Month
53.95°F
(12.19°C)
52.02°F
(11.12°C)
1.93°F
(1.07°C)
118th Coolest
Coolest since:
1913, 1918
9th Warmest
Warmest since:
2017
Oct 2018–Sep 2021
36-Month
53.51°F
(11.95°C)
52.00°F
(11.11°C)
1.51°F
(0.84°C)
113th Coolest
Coolest since:
1917
13th Warmest
Warmest since:
2018
Oct 2017–Sep 2021
48-Month
53.64°F
(12.02°C)
51.99°F
(11.11°C)
1.65°F
(0.91°C)
117th Coolest
Coolest since:
1918
8th Warmest
Warmest since:
2018
Oct 2016–Sep 2021
60-Month
53.88°F
(12.16°C)
51.98°F
(11.10°C)
1.90°F
(1.06°C)
120th Coolest
Coolest since:
1920
4th Warmest
Warmest since:
2020

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