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 1911

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1911
1-Month
53.83°F
(12.13°C)
51.90°F
(11.06°C)
1.93°F
(1.07°C)
111th Coolest
Coolest since:
1918
18th Warmest
Warmest to Date
2019
Ties: 2009
Aug–Sep 1911
2-Month
55.80°F
(13.22°C)
55.47°F
(13.04°C)
0.33°F
(0.18°C)
70th Coolest
Coolest since:
1974
59th Warmest
Warmest since:
2019
Ties: 1994
Jul–Sep 1911
3-Month
57.05°F
(13.92°C)
57.16°F
(13.98°C)
-0.11°F
(-0.06°C)
48th Coolest
Coolest since:
1924
81st Warmest
Warmest since:
2022
Ties: 1910
Jun–Sep 1911
4-Month
57.10°F
(13.94°C)
56.78°F
(13.77°C)
0.32°F
(0.17°C)
71st Coolest
Coolest since:
1903
58th Warmest
Warmest since:
2021
Ties: 1970
May–Sep 1911
5-Month
55.21°F
(12.89°C)
54.91°F
(12.73°C)
0.30°F
(0.16°C)
68th Coolest
Coolest since:
1907, 1924
61st Warmest
Warmest since:
2018
Ties: 1914
Apr–Sep 1911
6-Month
52.32°F
(11.29°C)
52.19°F
(11.22°C)
0.13°F
(0.07°C)
58th Coolest
Coolest since:
1907
71st Warmest
Warmest since:
2018
Ties: 1940
Mar–Sep 1911
7-Month
49.38°F
(9.66°C)
49.02°F
(9.46°C)
0.36°F
(0.20°C)
76th Coolest
Coolest since:
1917
53rd Warmest
Warmest since:
2012
Feb–Sep 1911
8-Month
46.12°F
(7.84°C)
45.75°F
(7.64°C)
0.37°F
(0.20°C)
79th Coolest
Coolest since:
1917
50th Warmest
Warmest to Date
2012
Jan–Sep 1911
9-Month
43.48°F
(6.38°C)
42.86°F
(6.03°C)
0.62°F
(0.35°C)
88th Coolest
Coolest since:
1917
41st Warmest
Warmest since:
2012
Dec 1910–Sep 1911
10-Month
41.32°F
(5.18°C)
40.84°F
(4.91°C)
0.48°F
(0.27°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2016
Nov 1910–Sep 1911
11-Month
40.31°F
(4.62°C)
39.92°F
(4.40°C)
0.39°F
(0.22°C)
82nd Coolest
Coolest since:
1917
46th Warmest
Warmest since:
2016
Oct 1910–Sep 1911
12-Month
40.46°F
(4.70°C)
40.04°F
(4.47°C)
0.42°F
(0.23°C)
81st Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2016
Ties: 1958
Apr 1910–Sep 1911
18-Month
44.29°F
(6.83°C)
44.10°F
(6.72°C)
0.19°F
(0.11°C)
73rd Coolest
Coolest since:
1917
55th Warmest
Warmest since:
2016
Ties: 1940
Oct 1909–Sep 1911
24-Month
39.99°F
(4.44°C)
40.03°F
(4.46°C)
-0.04°F
(-0.02°C)
54th Coolest
Coolest since:
1918
73rd Warmest
Warmest since:
2017
Ties: 1915
Oct 1908–Sep 1911
36-Month
39.93°F
(4.41°C)
40.02°F
(4.46°C)
-0.09°F
(-0.05°C)
52nd Coolest
Coolest since:
1918
74th Warmest
Warmest since:
2017, 2018
Ties: 1928
Oct 1907–Sep 1911
48-Month
40.00°F
(4.44°C)
40.01°F
(4.45°C)
-0.01°F
(-0.01°C)
55th Coolest
Coolest since:
1918
70th Warmest
Warmest since:
2018
Ties: 1961
Oct 1906–Sep 1911
60-Month
39.94°F
(4.41°C)
40.00°F
(4.44°C)
-0.06°F
(-0.03°C)
52nd Coolest
Coolest since:
1920
72nd Warmest
Warmest to Date
2019, 2020
Ties: 1960, 1977

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