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 1900

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1900
1-Month
53.26°F
(11.81°C)
51.90°F
(11.06°C)
1.36°F
(0.75°C)
100th Coolest
Coolest since:
1918
29th Warmest
Warmest to Date
2019
Ties: 1938
Aug–Sep 1900
2-Month
56.57°F
(13.65°C)
55.48°F
(13.04°C)
1.09°F
(0.61°C)
98th Coolest
Coolest since:
1974
31st Warmest
Warmest to Date
2019
Jul–Sep 1900
3-Month
57.75°F
(14.31°C)
57.16°F
(13.98°C)
0.59°F
(0.33°C)
88th Coolest
Coolest since:
1924
41st Warmest
Warmest to Date
2022
Jun–Sep 1900
4-Month
57.58°F
(14.21°C)
56.78°F
(13.77°C)
0.80°F
(0.44°C)
99th Coolest
Coolest since:
1903
30th Warmest
Warmest to Date
2021
Ties: 1994
May–Sep 1900
5-Month
55.78°F
(13.21°C)
54.91°F
(12.73°C)
0.87°F
(0.48°C)
98th Coolest
Coolest since:
1907, 1924
31st Warmest
Warmest to Date
2018
Apr–Sep 1900
6-Month
53.13°F
(11.74°C)
52.20°F
(11.22°C)
0.93°F
(0.52°C)
101st Coolest
Coolest since:
1907
28th Warmest
Warmest to Date
2018
Ties: 1990
Mar–Sep 1900
7-Month
49.76°F
(9.87°C)
49.03°F
(9.46°C)
0.73°F
(0.41°C)
95th Coolest
Coolest since:
1917
34th Warmest
Warmest to Date
2012
Feb–Sep 1900
8-Month
45.96°F
(7.76°C)
45.75°F
(7.64°C)
0.21°F
(0.12°C)
72nd Coolest
Coolest since:
1917
57th Warmest
Warmest since:
2012
Ties: 1919
Jan–Sep 1900
9-Month
43.51°F
(6.39°C)
42.86°F
(6.03°C)
0.65°F
(0.36°C)
89th Coolest
Coolest since:
1917
40th Warmest
Warmest to Date
2012
Dec 1899–Sep 1900
10-Month
41.33°F
(5.18°C)
40.84°F
(4.91°C)
0.49°F
(0.27°C)
81st Coolest
Coolest since:
1917
47th Warmest
Warmest to Date
2016
Nov 1899–Sep 1900
11-Month
40.66°F
(4.81°C)
39.92°F
(4.40°C)
0.74°F
(0.41°C)
93rd Coolest
Coolest since:
1917
35th Warmest
Warmest to Date
2016
Oct 1899–Sep 1900
12-Month
40.77°F
(4.87°C)
40.04°F
(4.47°C)
0.73°F
(0.40°C)
91st Coolest
Coolest since:
1917
37th Warmest
Warmest to Date
2016
Apr 1899–Sep 1900
18-Month
44.45°F
(6.92°C)
44.10°F
(6.72°C)
0.35°F
(0.20°C)
81st Coolest
Coolest since:
1917
47th Warmest
Warmest to Date
2016
Oct 1898–Sep 1900
24-Month
39.41°F
(4.12°C)
40.04°F
(4.47°C)
-0.63°F
(-0.35°C)
11th Coolest
Coolest since:
1918
116th Warmest
Warmest since:
2017
Ties: 1929, 1950
Oct 1897–Sep 1900
36-Month
39.67°F
(4.26°C)
40.03°F
(4.46°C)
-0.36°F
(-0.20°C)
27th Coolest
Coolest since:
1918
99th Warmest
Warmest since:
2017, 2018
Ties: 1907
Oct 1896–Sep 1900
48-Month
39.68°F
(4.27°C)
40.01°F
(4.45°C)
-0.33°F
(-0.18°C)
26th Coolest
Coolest since:
1918
99th Warmest
Warmest to Date
2018
Ties: 1926
Oct 1895–Sep 1900
60-Month
39.69°F
(4.27°C)
40.00°F
(4.44°C)
-0.31°F
(-0.17°C)
25th Coolest
Coolest since:
1920
99th Warmest
Warmest to Date
2019, 2020
Ties: 1953, 1972

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