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 2020

View Period (Months):
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  • Record Coolest
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  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2020
1-Month
52.99°F
(11.66°C)
51.90°F
(11.06°C)
1.09°F
(0.60°C)
93rd Coolest
Coolest since:
1918
36th Warmest
Warmest since:
2019
Aug–Sep 2020
2-Month
57.28°F
(14.04°C)
55.48°F
(13.04°C)
1.80°F
(1.00°C)
118th Coolest
Coolest since:
1974
11th Warmest
Warmest since:
2019
Jul–Sep 2020
3-Month
59.15°F
(15.08°C)
57.17°F
(13.98°C)
1.98°F
(1.10°C)
120th Coolest
Coolest since:
1924
9th Warmest
Warmest since:
2022
Jun–Sep 2020
4-Month
58.74°F
(14.86°C)
56.78°F
(13.77°C)
1.96°F
(1.09°C)
119th Coolest
Coolest since:
1903
10th Warmest
Warmest since:
2021
May–Sep 2020
5-Month
56.67°F
(13.71°C)
54.91°F
(12.73°C)
1.76°F
(0.98°C)
119th Coolest
Coolest since:
1907, 1924
10th Warmest
Warmest since:
2018
Ties: 2007
Apr–Sep 2020
6-Month
53.58°F
(11.99°C)
52.20°F
(11.22°C)
1.38°F
(0.77°C)
112th Coolest
Coolest since:
1907
17th Warmest
Warmest since:
2018
Ties: 2011
Mar–Sep 2020
7-Month
50.99°F
(10.55°C)
49.03°F
(9.46°C)
1.96°F
(1.09°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2012
Feb–Sep 2020
8-Month
47.76°F
(8.76°C)
45.74°F
(7.63°C)
2.02°F
(1.13°C)
123rd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2012
Ties: 2000
Jan–Sep 2020
9-Month
45.35°F
(7.42°C)
42.86°F
(6.03°C)
2.49°F
(1.39°C)
124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2012
Dec 2019–Sep 2020
10-Month
43.49°F
(6.38°C)
40.84°F
(4.91°C)
2.65°F
(1.47°C)
123rd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2016
Nov 2019–Sep 2020
11-Month
42.26°F
(5.70°C)
39.92°F
(4.40°C)
2.34°F
(1.30°C)
122nd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2016
Oct 2019–Sep 2020
12-Month
42.06°F
(5.59°C)
40.05°F
(4.47°C)
2.01°F
(1.12°C)
117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2016
Ties: 2018
Apr 2019–Sep 2020
18-Month
46.08°F
(7.82°C)
44.10°F
(6.72°C)
1.98°F
(1.10°C)
123rd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2016
Oct 2018–Sep 2020
24-Month
41.77°F
(5.43°C)
40.04°F
(4.47°C)
1.73°F
(0.96°C)
115th Coolest
Coolest since:
1918
12th Warmest
Warmest since:
2017
Ties: 2019
Oct 2017–Sep 2020
36-Month
41.87°F
(5.48°C)
40.03°F
(4.46°C)
1.84°F
(1.02°C)
119th Coolest
Coolest since:
1918
7th Warmest
Warmest since:
2017, 2018
Ties: 2021
Oct 2016–Sep 2020
48-Month
42.18°F
(5.66°C)
40.01°F
(4.45°C)
2.17°F
(1.21°C)
122nd Coolest
Coolest since:
1918
3rd Warmest
Warmest since:
2018
Oct 2015–Sep 2020
60-Month
42.43°F
(5.79°C)
40.00°F
(4.44°C)
2.43°F
(1.35°C)
123rd Coolest
Coolest since:
1920
1st Warmest
Warmest since:
2019, 2020
Ties: 2019

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