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 1950

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1950
1-Month
51.48°F
(10.82°C)
51.90°F
(11.06°C)
-0.42°F
(-0.24°C)
42nd Coolest
Coolest since:
1918
87th Warmest
Warmest since:
2019
Aug–Sep 1950
2-Month
53.99°F
(12.22°C)
55.48°F
(13.04°C)
-1.49°F
(-0.82°C)
4th Coolest
Coolest since:
1974
125th Warmest
Warmest since:
2019
Ties: 1918
Jul–Sep 1950
3-Month
55.59°F
(13.11°C)
57.16°F
(13.98°C)
-1.57°F
(-0.87°C)
2nd Coolest
Coolest since:
1924
127th Warmest
Warmest since:
2022
Jun–Sep 1950
4-Month
55.37°F
(12.98°C)
56.78°F
(13.77°C)
-1.41°F
(-0.79°C)
3rd Coolest
Coolest since:
1903
126th Warmest
Warmest since:
2021
May–Sep 1950
5-Month
53.62°F
(12.01°C)
54.91°F
(12.73°C)
-1.29°F
(-0.72°C)
4th Coolest
Coolest since:
1907, 1924
125th Warmest
Warmest since:
2018
Apr–Sep 1950
6-Month
50.71°F
(10.39°C)
52.20°F
(11.22°C)
-1.49°F
(-0.83°C)
4th Coolest
Coolest since:
1907
125th Warmest
Warmest since:
2018
Mar–Sep 1950
7-Month
47.34°F
(8.52°C)
49.02°F
(9.46°C)
-1.68°F
(-0.94°C)
3rd Coolest
Coolest since:
1917
126th Warmest
Warmest since:
2012
Feb–Sep 1950
8-Month
44.42°F
(6.90°C)
45.74°F
(7.63°C)
-1.32°F
(-0.73°C)
6th Coolest
Coolest since:
1917
123rd Warmest
Warmest since:
2012
Jan–Sep 1950
9-Month
41.66°F
(5.37°C)
42.86°F
(6.03°C)
-1.20°F
(-0.66°C)
9th Coolest
Coolest since:
1917
120th Warmest
Warmest since:
2012
Dec 1949–Sep 1950
10-Month
39.74°F
(4.30°C)
40.84°F
(4.91°C)
-1.10°F
(-0.61°C)
10th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2016
Nov 1949–Sep 1950
11-Month
39.04°F
(3.91°C)
39.91°F
(4.39°C)
-0.87°F
(-0.48°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2016
Oct 1949–Sep 1950
12-Month
39.30°F
(4.06°C)
40.05°F
(4.47°C)
-0.75°F
(-0.41°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2016
Ties: 1977
Apr 1949–Sep 1950
18-Month
43.68°F
(6.49°C)
44.10°F
(6.72°C)
-0.42°F
(-0.23°C)
24th Coolest
Coolest since:
1917
104th Warmest
Warmest since:
2016
Oct 1948–Sep 1950
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: 1900, 1929
Oct 1947–Sep 1950
36-Month
39.54°F
(4.19°C)
40.03°F
(4.46°C)
-0.49°F
(-0.27°C)
14th Coolest
Coolest since:
1918
112th Warmest
Warmest since:
2017, 2018
Oct 1946–Sep 1950
48-Month
39.65°F
(4.25°C)
40.01°F
(4.45°C)
-0.36°F
(-0.20°C)
23rd Coolest
Coolest since:
1918
102nd Warmest
Warmest since:
2018
Oct 1945–Sep 1950
60-Month
39.75°F
(4.31°C)
40.00°F
(4.44°C)
-0.25°F
(-0.13°C)
32nd Coolest
Coolest since:
1920
92nd Warmest
Warmest since:
2019, 2020

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