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 1978

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  • Record Coolest
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  • Top 1/3
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1978
1-Month
40.24°F
(4.58°C)
42.76°F
(5.98°C)
-2.52°F
(-1.40°C)
20th Coolest
Coolest since:
1983
108th Warmest
Warmest since:
2021
Nov–Dec 1978
2-Month
46.04°F
(7.80°C)
47.73°F
(8.74°C)
-1.69°F
(-0.94°C)
19th Coolest
Coolest since:
2000
109th Warmest
Warmest since:
1999
Oct–Dec 1978
3-Month
53.48°F
(11.93°C)
54.09°F
(12.27°C)
-0.61°F
(-0.34°C)
40th Coolest
Coolest since:
1972
88th Warmest
Warmest since:
1999
Sep–Dec 1978
4-Month
59.68°F
(15.38°C)
60.02°F
(15.57°C)
-0.34°F
(-0.19°C)
50th Coolest
Coolest since:
1972
78th Warmest
Warmest since:
2021
Aug–Dec 1978
5-Month
64.71°F
(18.17°C)
65.04°F
(18.36°C)
-0.33°F
(-0.19°C)
49th Coolest
Coolest since:
1972
79th Warmest
Warmest since:
2021
Ties: 1907
Jul–Dec 1978
6-Month
68.41°F
(20.23°C)
68.65°F
(20.36°C)
-0.24°F
(-0.13°C)
51st Coolest
Coolest since:
1972
77th Warmest
Warmest since:
2021
Jun–Dec 1978
7-Month
70.37°F
(21.32°C)
70.47°F
(21.37°C)
-0.10°F
(-0.05°C)
60th Coolest
Coolest since:
1972
68th Warmest
Warmest since:
2021
May–Dec 1978
8-Month
70.55°F
(21.42°C)
70.77°F
(21.54°C)
-0.22°F
(-0.12°C)
52nd Coolest
Coolest since:
1972
76th Warmest
Warmest since:
2021
Apr–Dec 1978
9-Month
69.76°F
(20.98°C)
69.96°F
(21.09°C)
-0.20°F
(-0.11°C)
48th Coolest
Coolest since:
1972
80th Warmest
Warmest since:
2012
Mar–Dec 1978
10-Month
68.05°F
(20.03°C)
68.26°F
(20.14°C)
-0.21°F
(-0.11°C)
54th Coolest
Coolest since:
1912
74th Warmest
Warmest since:
2012
Feb–Dec 1978
11-Month
65.31°F
(18.51°C)
66.14°F
(18.97°C)
-0.83°F
(-0.46°C)
21st Coolest
Coolest since:
1912
107th Warmest
Warmest since:
2012
Jan–Dec 1978
12-Month
62.77°F
(17.09°C)
64.00°F
(17.78°C)
-1.23°F
(-0.69°C)
9th Coolest
Coolest since:
1912
119th Warmest
Warmest since:
2012
Jul 1977–Dec 1978
18-Month
64.77°F
(18.21°C)
65.56°F
(18.64°C)
-0.79°F
(-0.43°C)
17th Coolest
Coolest since:
1912
110th Warmest
Warmest since:
2012
Ties: 1897
Jan 1977–Dec 1978
24-Month
63.67°F
(17.59°C)
63.99°F
(17.77°C)
-0.32°F
(-0.18°C)
39th Coolest
Coolest since:
1913
88th Warmest
Warmest since:
2017
Ties: 1902
Jan 1976–Dec 1978
36-Month
63.81°F
(17.67°C)
63.99°F
(17.77°C)
-0.18°F
(-0.10°C)
46th Coolest
Coolest since:
1905
80th Warmest
Warmest since:
2017
Jan 1975–Dec 1978
48-Month
63.66°F
(17.59°C)
63.97°F
(17.76°C)
-0.31°F
(-0.17°C)
32nd Coolest
Coolest since:
1906
93rd Warmest
Warmest since:
2018
Ties: 1929
Jan 1974–Dec 1978
60-Month
63.79°F
(17.66°C)
63.96°F
(17.76°C)
-0.17°F
(-0.10°C)
42nd Coolest
Coolest since:
1907
82nd Warmest
Warmest since:
2016

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