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 1928

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1928
1-Month
49.50°F
(9.72°C)
51.90°F
(11.06°C)
-2.40°F
(-1.34°C)
4th Coolest
Coolest since:
1918
125th Warmest
Warmest since:
2019
Aug–Sep 1928
2-Month
54.15°F
(12.31°C)
55.48°F
(13.04°C)
-1.33°F
(-0.73°C)
7th Coolest
Coolest since:
1974
122nd Warmest
Warmest since:
2019
Jul–Sep 1928
3-Month
56.31°F
(13.51°C)
57.16°F
(13.98°C)
-0.85°F
(-0.47°C)
17th Coolest
Coolest since:
1924
112th Warmest
Warmest since:
2022
Jun–Sep 1928
4-Month
55.70°F
(13.17°C)
56.78°F
(13.77°C)
-1.08°F
(-0.60°C)
9th Coolest
Coolest since:
1903
120th Warmest
Warmest since:
2021
May–Sep 1928
5-Month
54.15°F
(12.31°C)
54.91°F
(12.73°C)
-0.76°F
(-0.42°C)
17th Coolest
Coolest since:
1907, 1924
112th Warmest
Warmest since:
2018
Apr–Sep 1928
6-Month
51.06°F
(10.59°C)
52.20°F
(11.22°C)
-1.14°F
(-0.63°C)
6th Coolest
Coolest since:
1907
123rd Warmest
Warmest since:
2018
Mar–Sep 1928
7-Month
48.25°F
(9.03°C)
49.02°F
(9.46°C)
-0.77°F
(-0.43°C)
13th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2012
Feb–Sep 1928
8-Month
45.14°F
(7.30°C)
45.75°F
(7.64°C)
-0.61°F
(-0.34°C)
25th Coolest
Coolest since:
1917
104th Warmest
Warmest since:
2012
Jan–Sep 1928
9-Month
42.47°F
(5.82°C)
42.86°F
(6.03°C)
-0.39°F
(-0.21°C)
38th Coolest
Coolest since:
1917
91st Warmest
Warmest since:
2012
Dec 1927–Sep 1928
10-Month
40.01°F
(4.45°C)
40.84°F
(4.91°C)
-0.83°F
(-0.46°C)
15th Coolest
Coolest since:
1917
113th Warmest
Warmest since:
2016
Ties: 1965
Nov 1927–Sep 1928
11-Month
39.44°F
(4.13°C)
39.92°F
(4.40°C)
-0.48°F
(-0.27°C)
27th Coolest
Coolest since:
1917
101st Warmest
Warmest since:
2016
Ties: 1936
Oct 1927–Sep 1928
12-Month
39.67°F
(4.26°C)
40.04°F
(4.47°C)
-0.37°F
(-0.21°C)
32nd Coolest
Coolest since:
1917
96th Warmest
Warmest since:
2016
Apr 1927–Sep 1928
18-Month
43.71°F
(6.51°C)
44.09°F
(6.72°C)
-0.38°F
(-0.21°C)
27th Coolest
Coolest since:
1917
101st Warmest
Warmest since:
2016
Oct 1926–Sep 1928
24-Month
40.05°F
(4.47°C)
40.04°F
(4.47°C)
0.01°F
(0.00°C)
59th Coolest
Coolest since:
1918
68th Warmest
Warmest since:
2017
Oct 1925–Sep 1928
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: 1911
Oct 1924–Sep 1928
48-Month
40.03°F
(4.46°C)
40.01°F
(4.45°C)
0.02°F
(0.01°C)
58th Coolest
Coolest since:
1918
67th Warmest
Warmest since:
2018
Oct 1923–Sep 1928
60-Month
39.81°F
(4.34°C)
40.00°F
(4.44°C)
-0.19°F
(-0.10°C)
39th Coolest
Coolest since:
1920
85th Warmest
Warmest since:
2019, 2020
Ties: 1901

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