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.

Minimum Temperature Rankings, September 2015

View Period (Months):
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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 2015
1-Month
55.74°F
(13.19°C)
51.90°F
(11.06°C)
3.84°F
(2.13°C)
126th Coolest
Coolest since:
1918
3rd Warmest
Warmest since:
2019
Aug–Sep 2015
2-Month
57.92°F
(14.40°C)
55.48°F
(13.04°C)
2.44°F
(1.36°C)
122nd Coolest
Coolest since:
1974
7th Warmest
Warmest since:
2019
Jul–Sep 2015
3-Month
59.23°F
(15.13°C)
57.17°F
(13.98°C)
2.06°F
(1.15°C)
121st Coolest
Coolest since:
1924
8th Warmest
Warmest since:
2022
Jun–Sep 2015
4-Month
59.19°F
(15.11°C)
56.78°F
(13.77°C)
2.41°F
(1.34°C)
124th Coolest
Coolest since:
1903
5th Warmest
Warmest to Date
2021
May–Sep 2015
5-Month
57.17°F
(13.98°C)
54.91°F
(12.73°C)
2.26°F
(1.25°C)
125th Coolest
Coolest since:
1907, 1924
4th Warmest
Warmest to Date
2018
Apr–Sep 2015
6-Month
54.42°F
(12.46°C)
52.20°F
(11.22°C)
2.22°F
(1.24°C)
127th Coolest
Coolest since:
1907
2nd Warmest
Warmest to Date
2018
Mar–Sep 2015
7-Month
51.36°F
(10.76°C)
49.02°F
(9.46°C)
2.34°F
(1.30°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2012
Feb–Sep 2015
8-Month
47.64°F
(8.69°C)
45.75°F
(7.64°C)
1.89°F
(1.05°C)
120th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
2012
Jan–Sep 2015
9-Month
44.89°F
(7.16°C)
42.86°F
(6.03°C)
2.03°F
(1.13°C)
119th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2012
Dec 2014–Sep 2015
10-Month
43.22°F
(6.23°C)
40.83°F
(4.91°C)
2.39°F
(1.32°C)
122nd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2016
Nov 2014–Sep 2015
11-Month
41.86°F
(5.48°C)
39.92°F
(4.40°C)
1.94°F
(1.08°C)
117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2016
Oct 2014–Sep 2015
12-Month
42.08°F
(5.60°C)
40.05°F
(4.47°C)
2.03°F
(1.13°C)
120th Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2016
Ties: 2006, 2021
Apr 2014–Sep 2015
18-Month
45.82°F
(7.68°C)
44.10°F
(6.72°C)
1.72°F
(0.96°C)
118th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2016
Ties: 2006
Oct 2013–Sep 2015
24-Month
41.07°F
(5.04°C)
40.04°F
(4.47°C)
1.03°F
(0.57°C)
104th Coolest
Coolest since:
1918
23rd Warmest
Warmest since:
2017
Ties: 2008
Oct 2012–Sep 2015
36-Month
41.14°F
(5.08°C)
40.02°F
(4.46°C)
1.12°F
(0.62°C)
104th Coolest
Coolest since:
1918
22nd Warmest
Warmest since:
2017, 2018
Oct 2011–Sep 2015
48-Month
41.58°F
(5.32°C)
40.01°F
(4.45°C)
1.57°F
(0.87°C)
113th Coolest
Coolest since:
1918
12th Warmest
Warmest since:
2018
Ties: 2008
Oct 2010–Sep 2015
60-Month
41.44°F
(5.24°C)
40.00°F
(4.44°C)
1.44°F
(0.80°C)
110th Coolest
Coolest since:
1920
14th Warmest
Warmest since:
2019, 2020

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