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 1957

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1957
1-Month
51.01°F
(10.56°C)
51.90°F
(11.06°C)
-0.89°F
(-0.50°C)
31st Coolest
Coolest since:
1918
98th Warmest
Warmest since:
2019
Aug–Sep 1957
2-Month
54.76°F
(12.64°C)
55.48°F
(13.04°C)
-0.72°F
(-0.40°C)
25th Coolest
Coolest since:
1974
104th Warmest
Warmest since:
2019
Ties: 1962
Jul–Sep 1957
3-Month
56.84°F
(13.80°C)
57.16°F
(13.98°C)
-0.32°F
(-0.18°C)
38th Coolest
Coolest since:
1924
91st Warmest
Warmest since:
2022
Jun–Sep 1957
4-Month
56.74°F
(13.74°C)
56.78°F
(13.77°C)
-0.04°F
(-0.03°C)
47th Coolest
Coolest since:
1903
82nd Warmest
Warmest since:
2021
Ties: 1984
May–Sep 1957
5-Month
55.01°F
(12.78°C)
54.91°F
(12.73°C)
0.10°F
(0.05°C)
61st Coolest
Coolest since:
1907, 1924
68th Warmest
Warmest since:
2018
Ties: 1932
Apr–Sep 1957
6-Month
52.39°F
(11.33°C)
52.20°F
(11.22°C)
0.19°F
(0.11°C)
62nd Coolest
Coolest since:
1907
67th Warmest
Warmest since:
2018
Ties: 1901
Mar–Sep 1957
7-Month
49.27°F
(9.59°C)
49.02°F
(9.46°C)
0.25°F
(0.13°C)
71st Coolest
Coolest since:
1917
58th Warmest
Warmest since:
2012
Feb–Sep 1957
8-Month
46.56°F
(8.09°C)
45.74°F
(7.63°C)
0.82°F
(0.46°C)
92nd Coolest
Coolest since:
1917
37th Warmest
Warmest since:
2012
Ties: 1934
Jan–Sep 1957
9-Month
43.28°F
(6.27°C)
42.86°F
(6.03°C)
0.42°F
(0.24°C)
81st Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2012
Ties: 1939
Dec 1956–Sep 1957
10-Month
41.47°F
(5.26°C)
40.84°F
(4.91°C)
0.63°F
(0.35°C)
89th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
2016
Nov 1956–Sep 1957
11-Month
40.27°F
(4.59°C)
39.91°F
(4.39°C)
0.36°F
(0.20°C)
79th Coolest
Coolest since:
1917
49th Warmest
Warmest since:
2016
Oct 1956–Sep 1957
12-Month
40.49°F
(4.72°C)
40.04°F
(4.47°C)
0.45°F
(0.25°C)
85th Coolest
Coolest since:
1917
43rd Warmest
Warmest since:
2016
Apr 1956–Sep 1957
18-Month
44.24°F
(6.80°C)
44.09°F
(6.72°C)
0.15°F
(0.08°C)
68th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
2016
Ties: 1982
Oct 1955–Sep 1957
24-Month
39.84°F
(4.36°C)
40.04°F
(4.47°C)
-0.20°F
(-0.11°C)
46th Coolest
Coolest since:
1918
81st Warmest
Warmest since:
2017
Oct 1954–Sep 1957
36-Month
39.92°F
(4.40°C)
40.02°F
(4.46°C)
-0.10°F
(-0.06°C)
51st Coolest
Coolest since:
1918
75th Warmest
Warmest since:
2017, 2018
Oct 1953–Sep 1957
48-Month
40.16°F
(4.53°C)
40.01°F
(4.45°C)
0.15°F
(0.08°C)
71st Coolest
Coolest since:
1918
54th Warmest
Warmest since:
2018
Oct 1952–Sep 1957
60-Month
40.19°F
(4.55°C)
40.00°F
(4.44°C)
0.19°F
(0.11°C)
75th Coolest
Coolest since:
1920
49th Warmest
Warmest since:
2019, 2020
Ties: 1923

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