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 1949

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1949
1-Month
50.36°F
(10.20°C)
51.90°F
(11.06°C)
-1.54°F
(-0.86°C)
14th Coolest
Coolest since:
1918
115th Warmest
Warmest since:
2019
Aug–Sep 1949
2-Month
54.44°F
(12.47°C)
55.47°F
(13.04°C)
-1.03°F
(-0.57°C)
17th Coolest
Coolest since:
1974
112th Warmest
Warmest since:
2019
Jul–Sep 1949
3-Month
56.74°F
(13.74°C)
57.17°F
(13.98°C)
-0.43°F
(-0.24°C)
34th Coolest
Coolest since:
1924
95th Warmest
Warmest since:
2022
Jun–Sep 1949
4-Month
56.69°F
(13.72°C)
56.78°F
(13.77°C)
-0.09°F
(-0.05°C)
45th Coolest
Coolest since:
1903
84th Warmest
Warmest since:
2021
May–Sep 1949
5-Month
55.12°F
(12.84°C)
54.91°F
(12.73°C)
0.21°F
(0.11°C)
64th Coolest
Coolest since:
1907, 1924
65th Warmest
Warmest since:
2018
Ties: 1940
Apr–Sep 1949
6-Month
52.44°F
(11.36°C)
52.20°F
(11.22°C)
0.24°F
(0.14°C)
65th Coolest
Coolest since:
1907
64th Warmest
Warmest since:
2018
Mar–Sep 1949
7-Month
49.20°F
(9.56°C)
49.02°F
(9.46°C)
0.18°F
(0.10°C)
66th Coolest
Coolest since:
1917
63rd Warmest
Warmest since:
2012
Feb–Sep 1949
8-Month
45.66°F
(7.59°C)
45.74°F
(7.63°C)
-0.08°F
(-0.04°C)
53rd Coolest
Coolest since:
1917
76th Warmest
Warmest since:
2012
Jan–Sep 1949
9-Month
42.38°F
(5.77°C)
42.86°F
(6.03°C)
-0.48°F
(-0.26°C)
32nd Coolest
Coolest since:
1917
97th Warmest
Warmest since:
2012
Dec 1948–Sep 1949
10-Month
40.38°F
(4.66°C)
40.83°F
(4.91°C)
-0.45°F
(-0.25°C)
29th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
2016
Nov 1948–Sep 1949
11-Month
39.53°F
(4.18°C)
39.91°F
(4.39°C)
-0.38°F
(-0.21°C)
31st Coolest
Coolest since:
1917
97th Warmest
Warmest since:
2016
Oct 1948–Sep 1949
12-Month
39.52°F
(4.18°C)
40.04°F
(4.47°C)
-0.52°F
(-0.29°C)
25th Coolest
Coolest since:
1917
103rd Warmest
Warmest since:
2016
Ties: 1910
Apr 1948–Sep 1949
18-Month
43.83°F
(6.57°C)
44.09°F
(6.72°C)
-0.26°F
(-0.15°C)
35th Coolest
Coolest since:
1917
93rd Warmest
Warmest since:
2016
Oct 1947–Sep 1949
24-Month
39.65°F
(4.25°C)
40.03°F
(4.46°C)
-0.38°F
(-0.21°C)
27th Coolest
Coolest since:
1918
100th Warmest
Warmest since:
2017
Oct 1946–Sep 1949
36-Month
39.76°F
(4.31°C)
40.02°F
(4.46°C)
-0.26°F
(-0.15°C)
39th Coolest
Coolest since:
1918
87th Warmest
Warmest since:
2017, 2018
Oct 1945–Sep 1949
48-Month
39.86°F
(4.37°C)
40.01°F
(4.45°C)
-0.15°F
(-0.08°C)
45th Coolest
Coolest since:
1918
80th Warmest
Warmest since:
2018
Oct 1944–Sep 1949
60-Month
39.90°F
(4.39°C)
40.00°F
(4.44°C)
-0.10°F
(-0.05°C)
48th Coolest
Coolest since:
1920
76th Warmest
Warmest since:
2019, 2020

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