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 1899

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1899
1-Month
21.72°F
(-5.71°C)
22.60°F
(-5.22°C)
-0.88°F
(-0.49°C)
39th Coolest
Coolest since:
1909
89th Warmest
Warmest since:
2015
Nov–Dec 1899
2-Month
27.83°F
(-2.32°C)
26.64°F
(-2.98°C)
1.19°F
(0.66°C)
88th Coolest
Coolest since:
1976
40th Warmest
Warmest to Date
2015
Ties: 1977
Oct–Dec 1899
3-Month
32.57°F
(0.32°C)
31.57°F
(-0.24°C)
1.00°F
(0.56°C)
91st Coolest
Coolest since:
1976
37th Warmest
Warmest to Date
2015
Ties: 1947
Sep–Dec 1899
4-Month
37.08°F
(2.82°C)
36.65°F
(2.58°C)
0.43°F
(0.24°C)
72nd Coolest
Coolest since:
1976
56th Warmest
Warmest to Date
2015
Aug–Dec 1899
5-Month
41.40°F
(5.22°C)
41.13°F
(5.07°C)
0.27°F
(0.15°C)
62nd Coolest
Coolest since:
1976
66th Warmest
Warmest to Date
2015
Jul–Dec 1899
6-Month
44.48°F
(6.93°C)
44.36°F
(6.87°C)
0.12°F
(0.06°C)
58th Coolest
Coolest since:
1976
70th Warmest
Warmest to Date
2021
Jun–Dec 1899
7-Month
46.09°F
(7.83°C)
45.97°F
(7.76°C)
0.12°F
(0.07°C)
60th Coolest
Coolest since:
1976
68th Warmest
Warmest to Date
2021
Ties: 1962
May–Dec 1899
8-Month
46.27°F
(7.93°C)
46.15°F
(7.86°C)
0.12°F
(0.07°C)
57th Coolest
Coolest since:
1976
71st Warmest
Warmest since:
2015
Apr–Dec 1899
9-Month
45.38°F
(7.43°C)
45.32°F
(7.40°C)
0.06°F
(0.03°C)
56th Coolest
Coolest since:
1917
72nd Warmest
Warmest since:
2015
Ties: 1925, 1971
Mar–Dec 1899
10-Month
43.48°F
(6.38°C)
43.78°F
(6.54°C)
-0.30°F
(-0.16°C)
34th Coolest
Coolest since:
1917
94th Warmest
Warmest since:
2015
Ties: 1969
Feb–Dec 1899
11-Month
40.86°F
(4.92°C)
41.88°F
(5.49°C)
-1.02°F
(-0.57°C)
9th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2016
Jan–Dec 1899
12-Month
39.08°F
(3.93°C)
40.04°F
(4.47°C)
-0.96°F
(-0.54°C)
12th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2016
Jul 1898–Dec 1899
18-Month
40.37°F
(4.65°C)
41.48°F
(5.27°C)
-1.11°F
(-0.62°C)
4th Coolest
Coolest since:
1917
123rd Warmest
Warmest since:
2016
Jan 1898–Dec 1899
24-Month
39.31°F
(4.06°C)
40.03°F
(4.46°C)
-0.72°F
(-0.40°C)
14th Coolest
Coolest since:
1917
113th Warmest
Warmest since:
2017
Jan 1897–Dec 1899
36-Month
39.44°F
(4.13°C)
40.02°F
(4.46°C)
-0.58°F
(-0.33°C)
12th Coolest
Coolest since:
1918
114th Warmest
Warmest since:
2017
Ties: 1903
Jan 1896–Dec 1899
48-Month
39.64°F
(4.24°C)
40.01°F
(4.45°C)
-0.37°F
(-0.21°C)
24th Coolest
Coolest since:
1919
101st Warmest
Warmest to Date
2018
Ties: 1925, 1926
Jan 1895–Dec 1899
60-Month
39.33°F
(4.07°C)
40.00°F
(4.44°C)
-0.67°F
(-0.37°C)
6th Coolest
Coolest since:
1920
118th Warmest
Warmest to Date
2019

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