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 1971

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
April 1971
1-Month		37.06°F
(2.81°C)		38.61°F
(3.67°C)		-1.55°F
(-0.86°C)		17th Coolest
Coolest since:
1920
113th Warmest
Warmest since:
1981
Mar–Apr 1971
2-Month		32.40°F
(0.22°C)		34.30°F
(1.28°C)		-1.90°F
(-1.06°C)		15th Coolest
Coolest since:
1950
115th Warmest
Warmest since:
2012
Feb–Apr 1971
3-Month		29.05°F
(-1.64°C)		30.47°F
(-0.85°C)		-1.42°F
(-0.79°C)		19th Coolest
Coolest since:
1899
111th Warmest
Warmest since:
2012
Ties: 1979
Jan–Apr 1971
4-Month		26.50°F
(-3.06°C)		27.79°F
(-2.34°C)		-1.29°F
(-0.72°C)		22nd Coolest
Coolest since:
1912
108th Warmest
Warmest since:
2012
Ties: 1963
Dec 1970–Apr 1971
5-Month		25.81°F
(-3.44°C)		26.76°F
(-2.91°C)		-0.95°F
(-0.53°C)		28th Coolest
Coolest since:
1899
101st Warmest
Warmest since:
2012
Nov 1970–Apr 1971
6-Month		26.64°F
(-2.98°C)		27.42°F
(-2.54°C)		-0.78°F
(-0.44°C)		25th Coolest
Coolest since:
1899
104th Warmest
Warmest since:
2017
Oct 1970–Apr 1971
7-Month		28.61°F
(-1.88°C)		29.42°F
(-1.43°C)		-0.81°F
(-0.45°C)		23rd Coolest
Coolest since:
1899
106th Warmest
Warmest since:
2017
Sep 1970–Apr 1971
8-Month		31.52°F
(-0.27°C)		32.23°F
(0.13°C)		-0.71°F
(-0.40°C)		23rd Coolest
Coolest since:
1917
106th Warmest
Warmest since:
2016
Aug 1970–Apr 1971
9-Month		34.67°F
(1.48°C)		35.21°F
(1.78°C)		-0.54°F
(-0.30°C)		25th Coolest
Coolest since:
1917
104th Warmest
Warmest since:
2017
Jul 1970–Apr 1971
10-Month		37.28°F
(2.93°C)		37.74°F
(3.19°C)		-0.46°F
(-0.26°C)		29th Coolest
Coolest since:
1917
100th Warmest
Warmest since:
2017
Jun 1970–Apr 1971
11-Month		38.97°F
(3.87°C)		39.37°F
(4.09°C)		-0.40°F
(-0.22°C)		30th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
2017
Ties: 1963
May 1970–Apr 1971
12-Month		39.70°F
(4.28°C)		40.04°F
(4.47°C)		-0.34°F
(-0.19°C)		32nd Coolest
Coolest since:
1917
97th Warmest
Warmest since:
2016
Ties: 1928
Nov 1969–Apr 1971
18-Month		35.32°F
(1.84°C)		35.83°F
(2.13°C)		-0.51°F
(-0.29°C)		24th Coolest
Coolest since:
1918
104th Warmest
Warmest since:
2017
Ties: 1906, 1963
May 1969–Apr 1971
24-Month		39.68°F
(4.27°C)		40.03°F
(4.46°C)		-0.35°F
(-0.19°C)		31st Coolest
Coolest since:
1918
97th Warmest
Warmest since:
2017
Ties: 1956
May 1968–Apr 1971
36-Month		39.53°F
(4.18°C)		40.02°F
(4.46°C)		-0.49°F
(-0.28°C)		17th Coolest
Coolest since:
1918
110th Warmest
Warmest since:
2017
Ties: 1952
May 1967–Apr 1971
48-Month		39.49°F
(4.16°C)		40.01°F
(4.45°C)		-0.52°F
(-0.29°C)		13th Coolest
Coolest since:
1918
113th Warmest
Warmest since:
2019
Ties: 1915
May 1966–Apr 1971
60-Month		39.60°F
(4.22°C)		40.00°F
(4.44°C)		-0.40°F
(-0.22°C)		19th Coolest
Coolest since:
1920
106th Warmest
Warmest since:
2020

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