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 1902

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1902
1-Month
49.53°F
(9.74°C)
51.90°F
(11.06°C)
-2.37°F
(-1.32°C)
5th Coolest
Coolest since:
1918
124th Warmest
Warmest since:
2019
Aug–Sep 1902
2-Month
53.92°F
(12.18°C)
55.48°F
(13.04°C)
-1.56°F
(-0.86°C)
3rd Coolest
Coolest since:
1974
126th Warmest
Warmest since:
2019
Jul–Sep 1902
3-Month
55.65°F
(13.14°C)
57.17°F
(13.98°C)
-1.52°F
(-0.84°C)
3rd Coolest
Coolest since:
1924
126th Warmest
Warmest since:
2022
Jun–Sep 1902
4-Month
55.46°F
(13.03°C)
56.78°F
(13.77°C)
-1.32°F
(-0.74°C)
4th Coolest
Coolest since:
1903
125th Warmest
Warmest since:
2021
May–Sep 1902
5-Month
54.28°F
(12.38°C)
54.91°F
(12.73°C)
-0.63°F
(-0.35°C)
21st Coolest
Coolest since:
1907, 1924
108th Warmest
Warmest since:
2018
Apr–Sep 1902
6-Month
51.62°F
(10.90°C)
52.20°F
(11.22°C)
-0.58°F
(-0.32°C)
23rd Coolest
Coolest since:
1907
106th Warmest
Warmest since:
2018
Mar–Sep 1902
7-Month
48.64°F
(9.24°C)
49.02°F
(9.46°C)
-0.38°F
(-0.22°C)
31st Coolest
Coolest since:
1917
98th Warmest
Warmest since:
2012
Feb–Sep 1902
8-Month
45.19°F
(7.33°C)
45.74°F
(7.63°C)
-0.55°F
(-0.30°C)
26th Coolest
Coolest since:
1917
103rd Warmest
Warmest since:
2012
Jan–Sep 1902
9-Month
42.30°F
(5.72°C)
42.86°F
(6.03°C)
-0.56°F
(-0.31°C)
27th Coolest
Coolest since:
1917
102nd Warmest
Warmest since:
2012
Ties: 1956
Dec 1901–Sep 1902
10-Month
40.17°F
(4.54°C)
40.84°F
(4.91°C)
-0.67°F
(-0.37°C)
22nd Coolest
Coolest since:
1917
106th Warmest
Warmest since:
2016
Nov 1901–Sep 1902
11-Month
39.25°F
(4.03°C)
39.92°F
(4.40°C)
-0.67°F
(-0.37°C)
19th Coolest
Coolest since:
1917
109th Warmest
Warmest since:
2016
Ties: 1903
Oct 1901–Sep 1902
12-Month
39.51°F
(4.17°C)
40.05°F
(4.47°C)
-0.54°F
(-0.30°C)
24th Coolest
Coolest since:
1917
104th Warmest
Warmest since:
2016
Apr 1901–Sep 1902
18-Month
43.80°F
(6.56°C)
44.09°F
(6.72°C)
-0.29°F
(-0.16°C)
34th Coolest
Coolest since:
1917
94th Warmest
Warmest since:
2016
Oct 1900–Sep 1902
24-Month
39.91°F
(4.39°C)
40.03°F
(4.46°C)
-0.12°F
(-0.07°C)
49th Coolest
Coolest since:
1918
78th Warmest
Warmest since:
2017
Oct 1899–Sep 1902
36-Month
40.20°F
(4.56°C)
40.02°F
(4.46°C)
0.18°F
(0.10°C)
68th Coolest
Coolest since:
1918
58th Warmest
Warmest to Date
2017, 2018
Oct 1898–Sep 1902
48-Month
39.66°F
(4.26°C)
40.01°F
(4.45°C)
-0.35°F
(-0.19°C)
24th Coolest
Coolest since:
1918
101st Warmest
Warmest since:
2018
Ties: 1916
Oct 1897–Sep 1902
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: 1926, 1930

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