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 1930

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1930
1-Month
52.57°F
(11.43°C)
51.90°F
(11.06°C)
0.67°F
(0.37°C)
81st Coolest
Coolest since:
1918
48th Warmest
Warmest since:
2019
Aug–Sep 1930
2-Month
55.91°F
(13.28°C)
55.48°F
(13.04°C)
0.43°F
(0.24°C)
76th Coolest
Coolest since:
1974
53rd Warmest
Warmest since:
2019
Jul–Sep 1930
3-Month
57.58°F
(14.21°C)
57.16°F
(13.98°C)
0.42°F
(0.23°C)
75th Coolest
Coolest since:
1924
54th Warmest
Warmest since:
2022
Jun–Sep 1930
4-Month
56.86°F
(13.81°C)
56.78°F
(13.77°C)
0.08°F
(0.04°C)
53rd Coolest
Coolest since:
1903
76th Warmest
Warmest since:
2021
Ties: 1905, 1932, 1947
May–Sep 1930
5-Month
54.88°F
(12.71°C)
54.91°F
(12.73°C)
-0.03°F
(-0.02°C)
48th Coolest
Coolest since:
1907, 1924
81st Warmest
Warmest since:
2018
Ties: 1953
Apr–Sep 1930
6-Month
52.57°F
(11.43°C)
52.19°F
(11.22°C)
0.38°F
(0.21°C)
73rd Coolest
Coolest since:
1907
56th Warmest
Warmest since:
2018
Mar–Sep 1930
7-Month
49.15°F
(9.53°C)
49.02°F
(9.46°C)
0.13°F
(0.07°C)
59th Coolest
Coolest since:
1917
70th Warmest
Warmest since:
2012
Ties: 1940, 1983
Feb–Sep 1930
8-Month
46.58°F
(8.10°C)
45.75°F
(7.64°C)
0.83°F
(0.46°C)
94th Coolest
Coolest since:
1917
35th Warmest
Warmest since:
2012
Ties: 1931
Jan–Sep 1930
9-Month
42.88°F
(6.04°C)
42.86°F
(6.03°C)
0.02°F
(0.01°C)
60th Coolest
Coolest since:
1917
69th Warmest
Warmest since:
2012
Ties: 1984
Dec 1929–Sep 1930
10-Month
40.91°F
(4.95°C)
40.83°F
(4.91°C)
0.08°F
(0.04°C)
65th Coolest
Coolest since:
1917
63rd Warmest
Warmest since:
2016
Ties: 1996
Nov 1929–Sep 1930
11-Month
39.70°F
(4.28°C)
39.92°F
(4.40°C)
-0.22°F
(-0.12°C)
41st Coolest
Coolest since:
1917
87th Warmest
Warmest since:
2016
Ties: 1952
Oct 1929–Sep 1930
12-Month
39.84°F
(4.36°C)
40.04°F
(4.47°C)
-0.20°F
(-0.11°C)
47th Coolest
Coolest since:
1917
81st Warmest
Warmest since:
2016
Apr 1929–Sep 1930
18-Month
43.76°F
(6.53°C)
44.10°F
(6.72°C)
-0.34°F
(-0.19°C)
31st Coolest
Coolest since:
1917
97th Warmest
Warmest since:
2016
Ties: 1952
Oct 1928–Sep 1930
24-Month
39.49°F
(4.16°C)
40.03°F
(4.46°C)
-0.54°F
(-0.30°C)
16th Coolest
Coolest since:
1918
111th Warmest
Warmest since:
2017
Ties: 1971
Oct 1927–Sep 1930
36-Month
39.55°F
(4.19°C)
40.02°F
(4.46°C)
-0.47°F
(-0.27°C)
15th Coolest
Coolest since:
1918
111th Warmest
Warmest since:
2017, 2018
Ties: 1952
Oct 1926–Sep 1930
48-Month
39.77°F
(4.32°C)
40.01°F
(4.45°C)
-0.24°F
(-0.13°C)
36th Coolest
Coolest since:
1918
89th Warmest
Warmest since:
2018
Ties: 1964
Oct 1925–Sep 1930
60-Month
39.76°F
(4.31°C)
40.00°F
(4.44°C)
-0.24°F
(-0.13°C)
33rd Coolest
Coolest since:
1920
91st Warmest
Warmest since:
2019, 2020
Ties: 1902, 1926

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