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, December 2018

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  • Record Coolest
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  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 2018
1-Month
26.26°F
(-3.19°C)
22.60°F
(-5.22°C)
3.66°F
(2.03°C)
117th Coolest
Coolest since:
1909
11th Warmest
Warmest since:
2015
Ties: 1957
Nov–Dec 2018
2-Month
28.06°F
(-2.19°C)
26.64°F
(-2.98°C)
1.42°F
(0.79°C)
96th Coolest
Coolest since:
1976
32nd Warmest
Warmest since:
2015
Oct–Dec 2018
3-Month
33.05°F
(0.58°C)
31.56°F
(-0.24°C)
1.49°F
(0.82°C)
104th Coolest
Coolest since:
1976
24th Warmest
Warmest since:
2015
Ties: 2006
Sep–Dec 2018
4-Month
38.72°F
(3.73°C)
36.65°F
(2.58°C)
2.07°F
(1.15°C)
119th Coolest
Coolest since:
1976
9th Warmest
Warmest since:
2015
Aug–Dec 2018
5-Month
43.18°F
(6.21°C)
41.13°F
(5.07°C)
2.05°F
(1.14°C)
121st Coolest
Coolest since:
1976
7th Warmest
Warmest since:
2015
Jul–Dec 2018
6-Month
46.43°F
(8.02°C)
44.36°F
(6.87°C)
2.07°F
(1.15°C)
122nd Coolest
Coolest since:
1976
6th Warmest
Warmest since:
2021
Jun–Dec 2018
7-Month
48.22°F
(9.01°C)
45.98°F
(7.77°C)
2.24°F
(1.24°C)
123rd Coolest
Coolest since:
1976
5th Warmest
Warmest since:
2021
May–Dec 2018
8-Month
48.76°F
(9.31°C)
46.15°F
(7.86°C)
2.61°F
(1.45°C)
124th Coolest
Coolest since:
1976
4th Warmest
Warmest since:
2015
Apr–Dec 2018
9-Month
47.37°F
(8.54°C)
45.32°F
(7.40°C)
2.05°F
(1.14°C)
123rd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2015
Mar–Dec 2018
10-Month
45.78°F
(7.66°C)
43.79°F
(6.55°C)
1.99°F
(1.11°C)
121st Coolest
Coolest since:
1917
7th Warmest
Warmest since:
2015
Feb–Dec 2018
11-Month
43.83°F
(6.57°C)
41.88°F
(5.49°C)
1.95°F
(1.08°C)
120th Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2016
Jan–Dec 2018
12-Month
41.94°F
(5.52°C)
40.03°F
(4.46°C)
1.91°F
(1.06°C)
119th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
2016
Jul 2017–Dec 2018
18-Month
43.34°F
(6.30°C)
41.48°F
(5.27°C)
1.86°F
(1.03°C)
117th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2016
Jan 2017–Dec 2018
24-Month
42.34°F
(5.74°C)
40.03°F
(4.46°C)
2.31°F
(1.28°C)
123rd Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2017
Jan 2016–Dec 2018
36-Month
42.60°F
(5.89°C)
40.02°F
(4.46°C)
2.58°F
(1.43°C)
124th Coolest
Coolest since:
1918
2nd Warmest
Warmest since:
2017
Jan 2015–Dec 2018
48-Month
42.63°F
(5.91°C)
40.01°F
(4.45°C)
2.62°F
(1.46°C)
124th Coolest
Coolest since:
1919
1st Warmest
Warmest to Date
2018
Jan 2014–Dec 2018
60-Month
42.25°F
(5.69°C)
40.00°F
(4.44°C)
2.25°F
(1.25°C)
121st Coolest
Coolest since:
1920
3rd Warmest
Warmest to Date
2019

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