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 1913

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1913
1-Month
50.88°F
(10.49°C)
51.90°F
(11.06°C)
-1.02°F
(-0.57°C)
26th Coolest
Coolest since:
1918
103rd Warmest
Warmest since:
2019
Aug–Sep 1913
2-Month
55.32°F
(12.96°C)
55.47°F
(13.04°C)
-0.15°F
(-0.08°C)
43rd Coolest
Coolest since:
1974
86th Warmest
Warmest since:
2019
Ties: 1920, 1984
Jul–Sep 1913
3-Month
56.88°F
(13.82°C)
57.16°F
(13.98°C)
-0.28°F
(-0.16°C)
40th Coolest
Coolest since:
1924
89th Warmest
Warmest since:
2022
Jun–Sep 1913
4-Month
56.49°F
(13.61°C)
56.78°F
(13.77°C)
-0.29°F
(-0.16°C)
38th Coolest
Coolest since:
1903
91st Warmest
Warmest since:
2021
Ties: 1926
May–Sep 1913
5-Month
54.59°F
(12.55°C)
54.91°F
(12.73°C)
-0.32°F
(-0.18°C)
34th Coolest
Coolest since:
1907, 1924
95th Warmest
Warmest since:
2018
Apr–Sep 1913
6-Month
51.88°F
(11.04°C)
52.20°F
(11.22°C)
-0.32°F
(-0.18°C)
34th Coolest
Coolest since:
1907
95th Warmest
Warmest since:
2018
Ties: 1983
Mar–Sep 1913
7-Month
48.35°F
(9.08°C)
49.03°F
(9.46°C)
-0.68°F
(-0.38°C)
20th Coolest
Coolest since:
1917
109th Warmest
Warmest since:
2012
Ties: 1956
Feb–Sep 1913
8-Month
44.63°F
(7.02°C)
45.75°F
(7.64°C)
-1.12°F
(-0.62°C)
10th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2012
Jan–Sep 1913
9-Month
41.83°F
(5.46°C)
42.86°F
(6.03°C)
-1.03°F
(-0.57°C)
10th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2012
Ties: 1903
Dec 1912–Sep 1913
10-Month
39.90°F
(4.39°C)
40.84°F
(4.91°C)
-0.94°F
(-0.52°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2016
Nov 1912–Sep 1913
11-Month
39.02°F
(3.90°C)
39.91°F
(4.39°C)
-0.89°F
(-0.49°C)
11th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
2016
Ties: 1951
Oct 1912–Sep 1913
12-Month
39.17°F
(3.98°C)
40.04°F
(4.47°C)
-0.87°F
(-0.49°C)
10th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2016
Apr 1912–Sep 1913
18-Month
43.26°F
(6.26°C)
44.09°F
(6.72°C)
-0.83°F
(-0.46°C)
8th Coolest
Coolest since:
1917
120th Warmest
Warmest since:
2016
Oct 1911–Sep 1913
24-Month
38.67°F
(3.71°C)
40.03°F
(4.46°C)
-1.36°F
(-0.75°C)
3rd Coolest
Coolest since:
1918
124th Warmest
Warmest since:
2017
Oct 1910–Sep 1913
36-Month
39.27°F
(4.04°C)
40.02°F
(4.46°C)
-0.75°F
(-0.42°C)
7th Coolest
Coolest since:
1918
119th Warmest
Warmest since:
2017, 2018
Ties: 1914
Oct 1909–Sep 1913
48-Month
39.33°F
(4.07°C)
40.01°F
(4.45°C)
-0.68°F
(-0.38°C)
6th Coolest
Coolest since:
1918
119th Warmest
Warmest since:
2018
Ties: 1906, 1915
Oct 1908–Sep 1913
60-Month
39.43°F
(4.13°C)
40.00°F
(4.44°C)
-0.57°F
(-0.31°C)
8th Coolest
Coolest since:
1920
116th Warmest
Warmest since:
2019, 2020

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