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 2011

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 2011
1-Month
52.74°F
(11.52°C)
51.90°F
(11.06°C)
0.84°F
(0.46°C)
84th Coolest
Coolest since:
1918
45th Warmest
Warmest since:
2019
Aug–Sep 2011
2-Month
57.20°F
(14.00°C)
55.48°F
(13.04°C)
1.72°F
(0.96°C)
116th Coolest
Coolest since:
1974
13th Warmest
Warmest since:
2019
Jul–Sep 2011
3-Month
59.25°F
(15.14°C)
57.16°F
(13.98°C)
2.09°F
(1.16°C)
122nd Coolest
Coolest since:
1924
7th Warmest
Warmest since:
2022
Jun–Sep 2011
4-Month
58.67°F
(14.82°C)
56.78°F
(13.77°C)
1.89°F
(1.05°C)
118th Coolest
Coolest since:
1903
11th Warmest
Warmest since:
2021
May–Sep 2011
5-Month
56.35°F
(13.53°C)
54.92°F
(12.73°C)
1.43°F
(0.80°C)
115th Coolest
Coolest since:
1907, 1924
14th Warmest
Warmest since:
2018
Apr–Sep 2011
6-Month
53.58°F
(11.99°C)
52.20°F
(11.22°C)
1.38°F
(0.77°C)
112th Coolest
Coolest since:
1907
17th Warmest
Warmest since:
2018
Ties: 2020
Mar–Sep 2011
7-Month
50.47°F
(10.26°C)
49.02°F
(9.46°C)
1.45°F
(0.80°C)
113th Coolest
Coolest since:
1917
16th Warmest
Warmest since:
2012
Feb–Sep 2011
8-Month
46.87°F
(8.26°C)
45.75°F
(7.64°C)
1.12°F
(0.62°C)
103rd Coolest
Coolest since:
1917
26th Warmest
Warmest since:
2012
Jan–Sep 2011
9-Month
43.81°F
(6.56°C)
42.86°F
(6.03°C)
0.95°F
(0.53°C)
94th Coolest
Coolest since:
1917
35th Warmest
Warmest since:
2012
Dec 2010–Sep 2011
10-Month
41.72°F
(5.40°C)
40.84°F
(4.91°C)
0.88°F
(0.49°C)
94th Coolest
Coolest since:
1917
34th Warmest
Warmest since:
2016
Nov 2010–Sep 2011
11-Month
40.73°F
(4.85°C)
39.92°F
(4.40°C)
0.81°F
(0.45°C)
95th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2016
Oct 2010–Sep 2011
12-Month
40.91°F
(4.95°C)
40.05°F
(4.47°C)
0.86°F
(0.48°C)
97th Coolest
Coolest since:
1917
31st Warmest
Warmest since:
2016
Apr 2010–Sep 2011
18-Month
45.24°F
(7.36°C)
44.10°F
(6.72°C)
1.14°F
(0.64°C)
105th Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
2016
Oct 2009–Sep 2011
24-Month
41.02°F
(5.01°C)
40.03°F
(4.46°C)
0.99°F
(0.55°C)
101st Coolest
Coolest since:
1918
26th Warmest
Warmest since:
2017
Oct 2008–Sep 2011
36-Month
40.90°F
(4.94°C)
40.02°F
(4.46°C)
0.88°F
(0.48°C)
100th Coolest
Coolest since:
1918
26th Warmest
Warmest since:
2017, 2018
Ties: 1987
Oct 2007–Sep 2011
48-Month
40.81°F
(4.89°C)
40.01°F
(4.45°C)
0.80°F
(0.44°C)
98th Coolest
Coolest since:
1918
27th Warmest
Warmest since:
2018
Oct 2006–Sep 2011
60-Month
40.97°F
(4.98°C)
40.00°F
(4.44°C)
0.97°F
(0.54°C)
100th Coolest
Coolest since:
1920
24th Warmest
Warmest since:
2019, 2020

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