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 1897

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1897
1-Month
52.77°F
(11.54°C)
51.90°F
(11.06°C)
0.87°F
(0.48°C)
86th Coolest
Coolest since:
1918
43rd Warmest
Warmest to Date
2019
Ties: 1954
Aug–Sep 1897
2-Month
55.48°F
(13.04°C)
55.48°F
(13.04°C)
0.00°F
(0.00°C)
53rd Coolest
Coolest since:
1974
76th Warmest
Warmest to Date
2019
Jul–Sep 1897
3-Month
57.09°F
(13.94°C)
57.17°F
(13.98°C)
-0.08°F
(-0.04°C)
53rd Coolest
Coolest since:
1924
76th Warmest
Warmest to Date
2022
Jun–Sep 1897
4-Month
56.64°F
(13.69°C)
56.78°F
(13.77°C)
-0.14°F
(-0.08°C)
43rd Coolest
Coolest since:
1903
86th Warmest
Warmest since:
2021
May–Sep 1897
5-Month
54.86°F
(12.70°C)
54.92°F
(12.73°C)
-0.06°F
(-0.03°C)
47th Coolest
Coolest since:
1907, 1924
82nd Warmest
Warmest since:
2018
Apr–Sep 1897
6-Month
52.19°F
(11.22°C)
52.19°F
(11.22°C)
0.00°F
(0.00°C)
52nd Coolest
Coolest since:
1907
77th Warmest
Warmest since:
2018
Mar–Sep 1897
7-Month
48.78°F
(9.32°C)
49.03°F
(9.46°C)
-0.25°F
(-0.14°C)
40th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
2012
Feb–Sep 1897
8-Month
45.62°F
(7.57°C)
45.75°F
(7.64°C)
-0.13°F
(-0.07°C)
50th Coolest
Coolest since:
1917
79th Warmest
Warmest since:
2012
Ties: 1908
Jan–Sep 1897
9-Month
42.62°F
(5.90°C)
42.86°F
(6.03°C)
-0.24°F
(-0.13°C)
46th Coolest
Coolest since:
1917
83rd Warmest
Warmest since:
2012
Ties: 1922
Dec 1896–Sep 1897
10-Month
40.89°F
(4.94°C)
40.84°F
(4.91°C)
0.05°F
(0.03°C)
62nd Coolest
Coolest since:
1917
66th Warmest
Warmest since:
2016
Nov 1896–Sep 1897
11-Month
39.73°F
(4.29°C)
39.91°F
(4.39°C)
-0.18°F
(-0.10°C)
43rd Coolest
Coolest since:
1917
85th Warmest
Warmest since:
2016
Oct 1896–Sep 1897
12-Month
39.73°F
(4.29°C)
40.04°F
(4.47°C)
-0.31°F
(-0.18°C)
36th Coolest
Coolest since:
1917
92nd Warmest
Warmest to Date
2016
Ties: 1967
Apr 1896–Sep 1897
18-Month
44.16°F
(6.76°C)
44.10°F
(6.72°C)
0.06°F
(0.04°C)
62nd Coolest
Coolest since:
1917
66th Warmest
Warmest to Date
2016
Ties: 1996
Oct 1895–Sep 1897
24-Month
39.72°F
(4.29°C)
40.04°F
(4.47°C)
-0.32°F
(-0.18°C)
35th Coolest
Coolest since:
1918
92nd Warmest
Warmest to Date
2017
Ties: 1963

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