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 1896

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1896
1-Month
50.59°F
(10.33°C)
51.90°F
(11.06°C)
-1.31°F
(-0.73°C)
17th Coolest
Coolest since:
1918
112th Warmest
Warmest since:
2019
Aug–Sep 1896
2-Month
54.86°F
(12.70°C)
55.48°F
(13.04°C)
-0.62°F
(-0.34°C)
30th Coolest
Coolest since:
1974
99th Warmest
Warmest since:
2019
Ties: 1915, 1929
Jul–Sep 1896
3-Month
57.02°F
(13.90°C)
57.16°F
(13.98°C)
-0.14°F
(-0.08°C)
45th Coolest
Coolest since:
1924
84th Warmest
Warmest to Date
2022
Ties: 1932
Jun–Sep 1896
4-Month
56.90°F
(13.83°C)
56.78°F
(13.77°C)
0.12°F
(0.06°C)
59th Coolest
Coolest since:
1903
70th Warmest
Warmest to Date
2021
May–Sep 1896
5-Month
55.54°F
(13.08°C)
54.91°F
(12.73°C)
0.63°F
(0.35°C)
86th Coolest
Coolest since:
1907, 1924
43rd Warmest
Warmest to Date
2018
Apr–Sep 1896
6-Month
53.01°F
(11.67°C)
52.20°F
(11.22°C)
0.81°F
(0.45°C)
96th Coolest
Coolest since:
1907
33rd Warmest
Warmest to Date
2018
Ties: 1925
Mar–Sep 1896
7-Month
49.24°F
(9.58°C)
49.03°F
(9.46°C)
0.21°F
(0.12°C)
68th Coolest
Coolest since:
1917
61st Warmest
Warmest to Date
2012
Feb–Sep 1896
8-Month
46.02°F
(7.79°C)
45.74°F
(7.63°C)
0.28°F
(0.16°C)
75th Coolest
Coolest since:
1917
54th Warmest
Warmest to Date
2012
Jan–Sep 1896
9-Month
43.30°F
(6.28°C)
42.86°F
(6.03°C)
0.44°F
(0.25°C)
83rd Coolest
Coolest since:
1917
46th Warmest
Warmest to Date
2012
Ties: 1994
Dec 1895–Sep 1896
10-Month
41.10°F
(5.06°C)
40.84°F
(4.91°C)
0.26°F
(0.15°C)
75th Coolest
Coolest since:
1917
53rd Warmest
Warmest to Date
2016
Ties: 1914
Nov 1895–Sep 1896
11-Month
39.93°F
(4.41°C)
39.91°F
(4.39°C)
0.02°F
(0.02°C)
61st Coolest
Coolest since:
1917
67th Warmest
Warmest to Date
2016
Ties: 1976, 2014
Oct 1895–Sep 1896
12-Month
39.70°F
(4.28°C)
40.04°F
(4.47°C)
-0.34°F
(-0.19°C)
34th Coolest
Coolest since:
1917
94th Warmest
Warmest to Date
2016
Ties: 1907
Apr 1895–Sep 1896
18-Month
43.72°F
(6.51°C)
44.10°F
(6.72°C)
-0.38°F
(-0.21°C)
28th Coolest
Coolest since:
1917
100th Warmest
Warmest to Date
2016

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