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 1990

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1990
1-Month
19.80°F
(-6.78°C)
22.60°F
(-5.22°C)
-2.80°F
(-1.56°C)
19th Coolest
Coolest since:
1909
110th Warmest
Warmest since:
2015
Nov–Dec 1990
2-Month
26.38°F
(-3.12°C)
26.63°F
(-2.98°C)
-0.25°F
(-0.14°C)
48th Coolest
Coolest since:
1976
81st Warmest
Warmest since:
2015
Ties: 1912
Oct–Dec 1990
3-Month
31.16°F
(-0.47°C)
31.56°F
(-0.24°C)
-0.40°F
(-0.23°C)
41st Coolest
Coolest since:
1976
88th Warmest
Warmest since:
2015
Sep–Dec 1990
4-Month
36.96°F
(2.76°C)
36.65°F
(2.58°C)
0.31°F
(0.18°C)
68th Coolest
Coolest since:
1976
61st Warmest
Warmest since:
2015
Aug–Dec 1990
5-Month
41.49°F
(5.27°C)
41.13°F
(5.07°C)
0.36°F
(0.20°C)
68th Coolest
Coolest since:
1976
61st Warmest
Warmest since:
2015
Jul–Dec 1990
6-Month
44.70°F
(7.06°C)
44.36°F
(6.87°C)
0.34°F
(0.19°C)
69th Coolest
Coolest since:
1976
60th Warmest
Warmest since:
2021
Jun–Dec 1990
7-Month
46.49°F
(8.05°C)
45.97°F
(7.76°C)
0.52°F
(0.29°C)
84th Coolest
Coolest since:
1976
45th Warmest
Warmest since:
2021
Ties: 1984
May–Dec 1990
8-Month
46.53°F
(8.07°C)
46.15°F
(7.86°C)
0.38°F
(0.21°C)
76th Coolest
Coolest since:
1976
53rd Warmest
Warmest since:
2015
Ties: 1949, 1962, 1963
Apr–Dec 1990
9-Month
45.81°F
(7.67°C)
45.32°F
(7.40°C)
0.49°F
(0.27°C)
88th Coolest
Coolest since:
1917
41st Warmest
Warmest since:
2015
Mar–Dec 1990
10-Month
44.56°F
(6.98°C)
43.78°F
(6.54°C)
0.78°F
(0.44°C)
94th Coolest
Coolest since:
1917
35th Warmest
Warmest since:
2015
Feb–Dec 1990
11-Month
42.81°F
(6.01°C)
41.88°F
(5.49°C)
0.93°F
(0.52°C)
97th Coolest
Coolest since:
1917
32nd Warmest
Warmest since:
2016
Jan–Dec 1990
12-Month
41.39°F
(5.22°C)
40.03°F
(4.46°C)
1.36°F
(0.76°C)
108th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
2016
Jul 1989–Dec 1990
18-Month
42.06°F
(5.59°C)
41.48°F
(5.27°C)
0.58°F
(0.32°C)
89th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
2016
Jan 1989–Dec 1990
24-Month
40.54°F
(4.74°C)
40.03°F
(4.46°C)
0.51°F
(0.28°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2017
Ties: 1921
Jan 1988–Dec 1990
36-Month
40.38°F
(4.66°C)
40.02°F
(4.46°C)
0.36°F
(0.20°C)
79th Coolest
Coolest since:
1918
48th Warmest
Warmest since:
2017
Jan 1987–Dec 1990
48-Month
40.62°F
(4.79°C)
40.01°F
(4.45°C)
0.61°F
(0.34°C)
89th Coolest
Coolest since:
1919
37th Warmest
Warmest since:
2018
Jan 1986–Dec 1990
60-Month
40.84°F
(4.91°C)
40.00°F
(4.44°C)
0.84°F
(0.47°C)
97th Coolest
Coolest since:
1920
28th Warmest
Warmest to Date
2019

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