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.

Maximum Temperature Rankings, December 1909

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1909
1-Month 		34.79°F
(1.55°C)		 42.76°F
(5.98°C)		 -7.97°F
(-4.43°C)		 2nd Coolest
Coolest to Date
 1983
127th Warmest
Warmest since:
 2021
Nov–Dec 1909
2-Month 		45.56°F
(7.53°C)		 47.74°F
(8.74°C)		 -2.18°F
(-1.21°C)		 13th Coolest
Coolest since:
 2000
116th Warmest
Warmest since:
 1999
Oct–Dec 1909
3-Month 		52.47°F
(11.37°C)		 54.09°F
(12.27°C)		 -1.62°F
(-0.90°C)		 16th Coolest
Coolest since:
 1972
113th Warmest
Warmest since:
 1999
Ties: 2009
Sep–Dec 1909
4-Month 		58.69°F
(14.83°C)		 60.02°F
(15.57°C)		 -1.33°F
(-0.74°C)		 15th Coolest
Coolest since:
 1972
114th Warmest
Warmest since:
 2021
Aug–Dec 1909
5-Month 		64.16°F
(17.87°C)		 65.04°F
(18.36°C)		 -0.88°F
(-0.49°C)		 23rd Coolest
Coolest since:
 1972
106th Warmest
Warmest since:
 2021
Ties: 1914
Jul–Dec 1909
6-Month 		67.68°F
(19.82°C)		 68.65°F
(20.36°C)		 -0.97°F
(-0.54°C)		 18th Coolest
Coolest since:
 1972
111th Warmest
Warmest since:
 2021
Jun–Dec 1909
7-Month 		69.64°F
(20.91°C)		 70.46°F
(21.37°C)		 -0.82°F
(-0.46°C)		 23rd Coolest
Coolest since:
 1972
106th Warmest
Warmest since:
 2021
May–Dec 1909
8-Month 		69.82°F
(21.01°C)		 70.77°F
(21.54°C)		 -0.95°F
(-0.53°C)		 18th Coolest
Coolest since:
 1972
111th Warmest
Warmest since:
 2021
Ties: 1917
Apr–Dec 1909
9-Month 		68.89°F
(20.49°C)		 69.96°F
(21.09°C)		 -1.07°F
(-0.60°C)		 12th Coolest
Coolest since:
 1972
117th Warmest
Warmest since:
 2021
Ties: 1912
Mar–Dec 1909
10-Month 		67.14°F
(19.52°C)		 68.27°F
(20.15°C)		 -1.13°F
(-0.63°C)		 10th Coolest
Coolest since:
 1912
119th Warmest
Warmest since:
 2012
Feb–Dec 1909
11-Month 		65.23°F
(18.46°C)		 66.14°F
(18.97°C)		 -0.91°F
(-0.51°C)		 18th Coolest
Coolest since:
 1912
111th Warmest
Warmest since:
 2012
Jan–Dec 1909
12-Month 		63.33°F
(17.41°C)		 64.00°F
(17.78°C)		 -0.67°F
(-0.37°C)		 27th Coolest
Coolest since:
 1912
102nd Warmest
Warmest since:
 2012
Jul 1908–Dec 1909
18-Month 		65.07°F
(18.37°C)		 65.55°F
(18.64°C)		 -0.48°F
(-0.27°C)		 32nd Coolest
Coolest since:
 1912
96th Warmest
Warmest since:
 2012
Ties: 1898, 1926
Jan 1908–Dec 1909
24-Month 		63.76°F
(17.64°C)		 64.00°F
(17.78°C)		 -0.24°F
(-0.14°C)		 47th Coolest
Coolest since:
 1913
81st Warmest
Warmest since:
 2017
Ties: 1900, 1945
Jan 1907–Dec 1909
36-Month 		63.60°F
(17.56°C)		 63.98°F
(17.77°C)		 -0.38°F
(-0.21°C)		 30th Coolest
Coolest since:
 1905
97th Warmest
Warmest since:
 2017
Jan 1906–Dec 1909
48-Month 		63.53°F
(17.52°C)		 63.97°F
(17.76°C)		 -0.44°F
(-0.24°C)		 21st Coolest
Coolest since:
 1906
105th Warmest
Warmest since:
 2018
Ties: 1979
Jan 1905–Dec 1909
60-Month 		63.33°F
(17.41°C)		 63.96°F
(17.76°C)		 -0.63°F
(-0.35°C)		 12th Coolest
Coolest since:
 1907
113th Warmest
Warmest since:
 2016

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