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 1975

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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 1975
1-Month
50.02°F
(10.01°C)
51.90°F
(11.06°C)
-1.88°F
(-1.05°C)
8th Coolest
Coolest since:
1918
121st Warmest
Warmest since:
2019
Aug–Sep 1975
2-Month
54.40°F
(12.44°C)
55.48°F
(13.04°C)
-1.08°F
(-0.60°C)
14th Coolest
Coolest since:
1974
115th Warmest
Warmest since:
2019
Jul–Sep 1975
3-Month
56.59°F
(13.66°C)
57.16°F
(13.98°C)
-0.57°F
(-0.32°C)
23rd Coolest
Coolest since:
1924
106th Warmest
Warmest since:
2022
Jun–Sep 1975
4-Month
56.23°F
(13.46°C)
56.78°F
(13.77°C)
-0.55°F
(-0.31°C)
28th Coolest
Coolest since:
1903
101st Warmest
Warmest since:
2021
Ties: 1899
May–Sep 1975
5-Month
54.54°F
(12.52°C)
54.91°F
(12.73°C)
-0.37°F
(-0.21°C)
31st Coolest
Coolest since:
1907, 1924
98th Warmest
Warmest since:
2018
Apr–Sep 1975
6-Month
51.39°F
(10.77°C)
52.20°F
(11.22°C)
-0.81°F
(-0.45°C)
13th Coolest
Coolest since:
1907
116th Warmest
Warmest since:
2018
Mar–Sep 1975
7-Month
48.03°F
(8.91°C)
49.02°F
(9.46°C)
-0.99°F
(-0.55°C)
9th Coolest
Coolest since:
1917
120th Warmest
Warmest since:
2012
Feb–Sep 1975
8-Month
44.83°F
(7.13°C)
45.74°F
(7.63°C)
-0.91°F
(-0.50°C)
13th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2012
Jan–Sep 1975
9-Month
42.28°F
(5.71°C)
42.86°F
(6.03°C)
-0.58°F
(-0.32°C)
25th Coolest
Coolest since:
1917
104th Warmest
Warmest since:
2012
Ties: 1907
Dec 1974–Sep 1975
10-Month
40.45°F
(4.69°C)
40.84°F
(4.91°C)
-0.39°F
(-0.22°C)
34th Coolest
Coolest since:
1917
94th Warmest
Warmest since:
2016
Ties: 1936
Nov 1974–Sep 1975
11-Month
39.67°F
(4.26°C)
39.92°F
(4.40°C)
-0.25°F
(-0.14°C)
37th Coolest
Coolest since:
1917
91st Warmest
Warmest since:
2016
Ties: 1907, 1982
Oct 1974–Sep 1975
12-Month
39.76°F
(4.31°C)
40.04°F
(4.47°C)
-0.28°F
(-0.16°C)
39th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
2016
Ties: 1906
Apr 1974–Sep 1975
18-Month
43.67°F
(6.48°C)
44.09°F
(6.72°C)
-0.42°F
(-0.24°C)
22nd Coolest
Coolest since:
1917
106th Warmest
Warmest since:
2016
Ties: 1971
Oct 1973–Sep 1975
24-Month
40.11°F
(4.51°C)
40.03°F
(4.46°C)
0.08°F
(0.05°C)
65th Coolest
Coolest since:
1918
62nd Warmest
Warmest since:
2017
Ties: 1994
Oct 1972–Sep 1975
36-Month
40.11°F
(4.51°C)
40.02°F
(4.46°C)
0.09°F
(0.05°C)
65th Coolest
Coolest since:
1918
61st Warmest
Warmest since:
2017, 2018
Oct 1971–Sep 1975
48-Month
40.15°F
(4.53°C)
40.01°F
(4.45°C)
0.14°F
(0.08°C)
70th Coolest
Coolest since:
1918
55th Warmest
Warmest since:
2018
Oct 1970–Sep 1975
60-Month
39.99°F
(4.44°C)
40.00°F
(4.44°C)
-0.01°F
(0.00°C)
59th Coolest
Coolest since:
1920
65th Warmest
Warmest since:
2019, 2020

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