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 1931

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
May 1931
1-Month
45.95°F
(7.75°C)
47.44°F
(8.58°C)
-1.49°F
(-0.83°C)
13th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2018
Apr–May 1931
2-Month
41.97°F
(5.54°C)
43.03°F
(6.13°C)
-1.06°F
(-0.59°C)
18th Coolest
Coolest since:
1907
111th Warmest
Warmest since:
2012
Mar–May 1931
3-Month
37.42°F
(3.01°C)
38.68°F
(3.71°C)
-1.26°F
(-0.70°C)
13th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2012
Feb–May 1931
4-Month
34.91°F
(1.62°C)
34.72°F
(1.51°C)
0.19°F
(0.11°C)
69th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
2012
Jan–May 1931
5-Month
32.40°F
(0.22°C)
31.72°F
(-0.16°C)
0.68°F
(0.38°C)
84th Coolest
Coolest since:
1917
45th Warmest
Warmest since:
2012
Dec 1930–May 1931
6-Month
30.55°F
(-0.81°C)
30.21°F
(-0.99°C)
0.34°F
(0.18°C)
74th Coolest
Coolest since:
1917
54th Warmest
Warmest since:
2012
Nov 1930–May 1931
7-Month
30.44°F
(-0.87°C)
30.28°F
(-0.96°C)
0.16°F
(0.09°C)
68th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
2012
Oct 1930–May 1931
8-Month
31.65°F
(-0.19°C)
31.68°F
(-0.18°C)
-0.03°F
(-0.01°C)
63rd Coolest
Coolest since:
1917
65th Warmest
Warmest since:
2016, 2017
Sep 1930–May 1931
9-Month
33.97°F
(1.09°C)
33.92°F
(1.07°C)
0.05°F
(0.02°C)
62nd Coolest
Coolest since:
1917
66th Warmest
Warmest since:
2016
Aug 1930–May 1931
10-Month
36.50°F
(2.50°C)
36.44°F
(2.47°C)
0.06°F
(0.03°C)
63rd Coolest
Coolest since:
1917
65th Warmest
Warmest since:
2017
Jul 1930–May 1931
11-Month
38.72°F
(3.73°C)
38.63°F
(3.68°C)
0.09°F
(0.05°C)
65th Coolest
Coolest since:
1917
63rd Warmest
Warmest since:
2017
Ties: 1996
Jun 1930–May 1931
12-Month
40.05°F
(4.47°C)
40.04°F
(4.47°C)
0.01°F
(0.00°C)
55th Coolest
Coolest since:
1917
73rd Warmest
Warmest since:
2017
Ties: 1908, 1982
Dec 1929–May 1931
18-Month
36.80°F
(2.67°C)
36.76°F
(2.64°C)
0.04°F
(0.03°C)
65th Coolest
Coolest since:
1918
62nd Warmest
Warmest since:
2017
Ties: 1947
Jun 1929–May 1931
24-Month
39.81°F
(4.34°C)
40.03°F
(4.46°C)
-0.22°F
(-0.12°C)
39th Coolest
Coolest since:
1918
88th Warmest
Warmest since:
2017
Ties: 1903, 1926, 1956
Jun 1928–May 1931
36-Month
39.55°F
(4.19°C)
40.02°F
(4.46°C)
-0.47°F
(-0.27°C)
19th Coolest
Coolest since:
1918
107th Warmest
Warmest since:
2017
Jun 1927–May 1931
48-Month
39.60°F
(4.22°C)
40.01°F
(4.45°C)
-0.41°F
(-0.23°C)
18th Coolest
Coolest since:
1918
107th Warmest
Warmest since:
2018
Ties: 1904, 1968
Jun 1926–May 1931
60-Month
39.80°F
(4.33°C)
40.00°F
(4.44°C)
-0.20°F
(-0.11°C)
37th Coolest
Coolest since:
1920
87th Warmest
Warmest since:
2020
Ties: 1929, 1930, 1950

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