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, April 1951

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
April 1951
1-Month 		37.40°F
(3.00°C)		 38.61°F
(3.67°C)		 -1.21°F
(-0.67°C)		 26th Coolest
Coolest since:
 1920
103rd Warmest
Warmest since:
 1981
Mar–Apr 1951
2-Month 		32.22°F
(0.12°C)		 34.30°F
(1.28°C)		 -2.08°F
(-1.16°C)		 8th Coolest
Coolest since:
 1950
121st Warmest
Warmest since:
 2012
Ties: 1960
Feb–Apr 1951
3-Month 		29.14°F
(-1.59°C)		 30.47°F
(-0.85°C)		 -1.33°F
(-0.74°C)		 25th Coolest
Coolest since:
 1899
104th Warmest
Warmest since:
 2012
Ties: 1904
Jan–Apr 1951
4-Month 		26.67°F
(-2.96°C)		 27.79°F
(-2.34°C)		 -1.12°F
(-0.62°C)		 29th Coolest
Coolest since:
 1912
100th Warmest
Warmest since:
 2012
Dec 1950–Apr 1951
5-Month 		25.79°F
(-3.45°C)		 26.76°F
(-2.91°C)		 -0.97°F
(-0.54°C)		 26th Coolest
Coolest since:
 1899
102nd Warmest
Warmest since:
 2012
Ties: 1965
Nov 1950–Apr 1951
6-Month 		26.27°F
(-3.18°C)		 27.42°F
(-2.54°C)		 -1.15°F
(-0.64°C)		 18th Coolest
Coolest since:
 1899
110th Warmest
Warmest since:
 2017
Oct 1950–Apr 1951
7-Month 		28.83°F
(-1.76°C)		 29.42°F
(-1.43°C)		 -0.59°F
(-0.33°C)		 29th Coolest
Coolest since:
 1899
99th Warmest
Warmest since:
 2017
Sep 1950–Apr 1951
8-Month 		31.66°F
(-0.19°C)		 32.23°F
(0.13°C)		 -0.57°F
(-0.32°C)		 26th Coolest
Coolest since:
 1917
102nd Warmest
Warmest since:
 2016
Ties: 1952
Aug 1950–Apr 1951
9-Month 		34.42°F
(1.34°C)		 35.21°F
(1.78°C)		 -0.79°F
(-0.44°C)		 20th Coolest
Coolest since:
 1917
108th Warmest
Warmest since:
 2017
Ties: 1905
Jul 1950–Apr 1951
10-Month 		36.86°F
(2.70°C)		 37.74°F
(3.19°C)		 -0.88°F
(-0.49°C)		 15th Coolest
Coolest since:
 1917
113th Warmest
Warmest since:
 2017
Jun 1950–Apr 1951
11-Month 		38.48°F
(3.60°C)		 39.37°F
(4.09°C)		 -0.89°F
(-0.49°C)		 13th Coolest
Coolest since:
 1917
115th Warmest
Warmest since:
 2017
May 1950–Apr 1951
12-Month 		39.16°F
(3.98°C)		 40.04°F
(4.47°C)		 -0.88°F
(-0.49°C)		 11th Coolest
Coolest since:
 1917
117th Warmest
Warmest since:
 2016
Nov 1949–Apr 1951
18-Month 		35.07°F
(1.71°C)		 35.83°F
(2.13°C)		 -0.76°F
(-0.42°C)		 15th Coolest
Coolest since:
 1918
112th Warmest
Warmest since:
 2017
May 1949–Apr 1951
24-Month 		39.54°F
(4.19°C)		 40.03°F
(4.46°C)		 -0.49°F
(-0.27°C)		 20th Coolest
Coolest since:
 1918
107th Warmest
Warmest since:
 2017
May 1948–Apr 1951
36-Month 		39.49°F
(4.16°C)		 40.02°F
(4.46°C)		 -0.53°F
(-0.30°C)		 16th Coolest
Coolest since:
 1918
110th Warmest
Warmest since:
 2017
May 1947–Apr 1951
48-Month 		39.57°F
(4.21°C)		 40.01°F
(4.45°C)		 -0.44°F
(-0.24°C)		 17th Coolest
Coolest since:
 1918
108th Warmest
Warmest since:
 2019
May 1946–Apr 1951
60-Month 		39.61°F
(4.23°C)		 40.00°F
(4.44°C)		 -0.39°F
(-0.21°C)		 20th Coolest
Coolest since:
 1920
104th Warmest
Warmest since:
 2020
Ties: 1915

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