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 2009

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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 2009
1-Month
53.83°F
(12.13°C)
51.90°F
(11.06°C)
1.93°F
(1.07°C)
111th Coolest
Coolest since:
1918
18th Warmest
Warmest since:
2019
Ties: 1911
Aug–Sep 2009
2-Month
56.50°F
(13.61°C)
55.47°F
(13.04°C)
1.03°F
(0.57°C)
96th Coolest
Coolest since:
1974
33rd Warmest
Warmest since:
2019
Jul–Sep 2009
3-Month
57.65°F
(14.25°C)
57.16°F
(13.98°C)
0.49°F
(0.27°C)
83rd Coolest
Coolest since:
1924
46th Warmest
Warmest since:
2022
Ties: 1919, 1925
Jun–Sep 2009
4-Month
57.36°F
(14.09°C)
56.78°F
(13.77°C)
0.58°F
(0.32°C)
85th Coolest
Coolest since:
1903
44th Warmest
Warmest since:
2021
Ties: 1922
May–Sep 2009
5-Month
55.71°F
(13.17°C)
54.91°F
(12.73°C)
0.80°F
(0.44°C)
94th Coolest
Coolest since:
1907, 1924
35th Warmest
Warmest since:
2018
Apr–Sep 2009
6-Month
52.83°F
(11.57°C)
52.20°F
(11.22°C)
0.63°F
(0.35°C)
89th Coolest
Coolest since:
1907
40th Warmest
Warmest since:
2018
Ties: 1959
Mar–Sep 2009
7-Month
49.70°F
(9.83°C)
49.03°F
(9.46°C)
0.67°F
(0.37°C)
93rd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
2012
Feb–Sep 2009
8-Month
46.61°F
(8.12°C)
45.74°F
(7.63°C)
0.87°F
(0.49°C)
96th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2012
Ties: 1954
Jan–Sep 2009
9-Month
43.63°F
(6.46°C)
42.86°F
(6.03°C)
0.77°F
(0.43°C)
91st Coolest
Coolest since:
1917
38th Warmest
Warmest since:
2012
Dec 2008–Sep 2009
10-Month
41.38°F
(5.21°C)
40.84°F
(4.91°C)
0.54°F
(0.30°C)
85th Coolest
Coolest since:
1917
43rd Warmest
Warmest since:
2016
Nov 2008–Sep 2009
11-Month
40.61°F
(4.78°C)
39.92°F
(4.40°C)
0.69°F
(0.38°C)
91st Coolest
Coolest since:
1917
37th Warmest
Warmest since:
2016
Oct 2008–Sep 2009
12-Month
40.66°F
(4.81°C)
40.05°F
(4.47°C)
0.61°F
(0.34°C)
89th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
2016
Apr 2008–Sep 2009
18-Month
44.53°F
(6.96°C)
44.10°F
(6.72°C)
0.43°F
(0.24°C)
87th Coolest
Coolest since:
1917
41st Warmest
Warmest since:
2016
Ties: 1931, 1997
Oct 2007–Sep 2009
24-Month
40.59°F
(4.77°C)
40.04°F
(4.47°C)
0.55°F
(0.30°C)
87th Coolest
Coolest since:
1918
40th Warmest
Warmest since:
2017
Ties: 1954
Oct 2006–Sep 2009
36-Month
40.93°F
(4.96°C)
40.02°F
(4.46°C)
0.91°F
(0.50°C)
102nd Coolest
Coolest since:
1918
24th Warmest
Warmest since:
2017, 2018
Oct 2005–Sep 2009
48-Month
41.22°F
(5.12°C)
40.01°F
(4.45°C)
1.21°F
(0.67°C)
105th Coolest
Coolest since:
1918
20th Warmest
Warmest since:
2018
Oct 2004–Sep 2009
60-Month
41.40°F
(5.22°C)
40.00°F
(4.44°C)
1.40°F
(0.78°C)
109th Coolest
Coolest since:
1920
15th Warmest
Warmest since:
2019, 2020

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