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, May 1999

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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
May 1999
1-Month
47.37°F
(8.54°C)
47.44°F
(8.58°C)
-0.07°F
(-0.04°C)
50th Coolest
Coolest since:
1917
79th Warmest
Warmest since:
2018
Apr–May 1999
2-Month
43.52°F
(6.40°C)
43.03°F
(6.13°C)
0.49°F
(0.27°C)
75th Coolest
Coolest since:
1907
54th Warmest
Warmest since:
2012
Mar–May 1999
3-Month
39.29°F
(4.05°C)
38.68°F
(3.71°C)
0.61°F
(0.34°C)
82nd Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2012
Feb–May 1999
4-Month
36.52°F
(2.51°C)
34.71°F
(1.51°C)
1.81°F
(1.00°C)
114th Coolest
Coolest since:
1917
15th Warmest
Warmest since:
2012
Jan–May 1999
5-Month
33.84°F
(1.02°C)
31.72°F
(-0.16°C)
2.12°F
(1.18°C)
115th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2012
Dec 1998–May 1999
6-Month
32.39°F
(0.22°C)
30.21°F
(-0.99°C)
2.18°F
(1.21°C)
117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2012
Nov 1998–May 1999
7-Month
32.77°F
(0.43°C)
30.28°F
(-0.96°C)
2.49°F
(1.39°C)
119th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
2012
Oct 1998–May 1999
8-Month
34.09°F
(1.16°C)
31.68°F
(-0.18°C)
2.41°F
(1.34°C)
122nd Coolest
Coolest since:
1917
6th Warmest
Warmest to Date
2016, 2017
Sep 1998–May 1999
9-Month
36.52°F
(2.51°C)
33.92°F
(1.07°C)
2.60°F
(1.44°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest to Date
2016
Aug 1998–May 1999
10-Month
38.98°F
(3.88°C)
36.44°F
(2.47°C)
2.54°F
(1.41°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest to Date
2017
Jul 1998–May 1999
11-Month
41.15°F
(5.08°C)
38.63°F
(3.68°C)
2.52°F
(1.40°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest to Date
2017
Jun 1998–May 1999
12-Month
42.38°F
(5.77°C)
40.04°F
(4.47°C)
2.34°F
(1.30°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest to Date
2017
Dec 1997–May 1999
18-Month
39.34°F
(4.08°C)
36.76°F
(2.64°C)
2.58°F
(1.44°C)
124th Coolest
Coolest since:
1918
3rd Warmest
Warmest to Date
2017
Jun 1997–May 1999
24-Month
42.10°F
(5.61°C)
40.03°F
(4.46°C)
2.07°F
(1.15°C)
122nd Coolest
Coolest since:
1918
5th Warmest
Warmest to Date
2017
Jun 1996–May 1999
36-Month
41.54°F
(5.30°C)
40.02°F
(4.46°C)
1.52°F
(0.84°C)
112th Coolest
Coolest since:
1918
14th Warmest
Warmest to Date
2017
Ties: 2012
Jun 1995–May 1999
48-Month
41.18°F
(5.10°C)
40.01°F
(4.45°C)
1.17°F
(0.65°C)
103rd Coolest
Coolest since:
1918
22nd Warmest
Warmest to Date
2018
Jun 1994–May 1999
60-Month
41.25°F
(5.14°C)
39.99°F
(4.44°C)
1.26°F
(0.70°C)
104th Coolest
Coolest since:
1920
20th Warmest
Warmest to Date
2020

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