Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

South Atlantic-Gulf Basin

Average Temperature Rankings, December 2020

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 2020
1-Month 		48.0°F
(8.9°C)		 48.4°F
(9.1°C)		 -0.4°F
(-0.2°C)		 57th Coolest
Coolest since:
 1963
72nd Warmest
Warmest since:
 2015
Ties: 1902, 1973, 1997
Nov–Dec 2020
2-Month 		54.5°F
(12.5°C)		 51.9°F
(11.1°C)		 2.6°F
(1.4°C)		 106th Coolest
Coolest since:
 1917
23rd Warmest
Warmest since:
 2015
Ties: 1908
Oct–Dec 2020
3-Month 		59.3°F
(15.2°C)		 56.2°F
(13.4°C)		 3.1°F
(1.8°C)		 119th Coolest
Coolest since:
 1917
10th Warmest
Warmest since:
 2015
Ties: 1946, 1985
Sep–Dec 2020
4-Month 		63.2°F
(17.3°C)		 60.9°F
(16.1°C)		 2.3°F
(1.2°C)		 113th Coolest
Coolest since:
 1917
16th Warmest
Warmest since:
 2015
Aug–Dec 2020
5-Month 		66.6°F
(19.2°C)		 64.5°F
(18.1°C)		 2.1°F
(1.1°C)		 115th Coolest
Coolest since:
 1917
14th Warmest
Warmest since:
 2015
Jul–Dec 2020
6-Month 		69.1°F
(20.6°C)		 67.0°F
(19.4°C)		 2.1°F
(1.2°C)		 122nd Coolest
Coolest since:
 1917, 1976
7th Warmest
Warmest since:
 2015
Ties: 1941, 2018, 2021
Jun–Dec 2020
7-Month 		70.2°F
(21.2°C)		 68.5°F
(20.3°C)		 1.7°F
(0.9°C)		 117th Coolest
Coolest since:
 1976
12th Warmest
Warmest since:
 2015
Ties: 1990
May–Dec 2020
8-Month 		70.1°F
(21.2°C)		 68.8°F
(20.4°C)		 1.3°F
(0.8°C)		 113th Coolest
Coolest since:
 1976
16th Warmest
Warmest since:
 2015
Ties: 1896, 1900, 1911, 2022
Apr–Dec 2020
9-Month 		69.5°F
(20.8°C)		 68.2°F
(20.1°C)		 1.3°F
(0.7°C)		 115th Coolest
Coolest since:
 1976
14th Warmest
Warmest since:
 2015
Ties: 2021, 2022
Mar–Dec 2020
10-Month 		68.9°F
(20.5°C)		 67.0°F
(19.4°C)		 1.9°F
(1.1°C)		 124th Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2015
Feb–Dec 2020
11-Month 		67.5°F
(19.7°C)		 65.4°F
(18.6°C)		 2.1°F
(1.1°C)		 124th Coolest
Coolest since:
 1901, 1917
5th Warmest
Warmest since:
 2016, 2019
Ties: 1998, 2017
Jan–Dec 2020
12-Month 		66.2°F
(19.0°C)		 63.9°F
(17.7°C)		 2.3°F
(1.3°C)		 126th Coolest
Coolest since:
 1901
3rd Warmest
Warmest since:
 2019
Ties: 2016
Jul 2019–Dec 2020
18-Month 		67.3°F
(19.6°C)		 64.9°F
(18.3°C)		 2.4°F
(1.3°C)		 124th Coolest
Coolest since:
 1968
4th Warmest
Warmest since:
 2016, 2017
Jan 2019–Dec 2020
24-Month 		66.4°F
(19.1°C)		 63.9°F
(17.7°C)		 2.5°F
(1.4°C)		 127th Coolest
Coolest since:
 1969
1st Warmest
Warmest to Date
 2020
Jan 2018–Dec 2020
36-Month 		66.1°F
(18.9°C)		 63.9°F
(17.7°C)		 2.2°F
(1.2°C)		 124th Coolest
Coolest since:
 1968, 1969
3rd Warmest
Warmest since:
 2017, 2019
Jan 2017–Dec 2020
48-Month 		66.2°F
(19.0°C)		 63.8°F
(17.7°C)		 2.4°F
(1.3°C)		 125th Coolest
Coolest since:
 1969
1st Warmest
Warmest since:
 2019, 2020
Ties: 2019
Jan 2016–Dec 2020
60-Month 		66.2°F
(19.0°C)		 63.8°F
(17.7°C)		 2.4°F
(1.3°C)		 124th Coolest
Coolest since:
 1970
1st Warmest
Warmest to Date
 2020

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