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.

Average Temperature Rankings, September 1978

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1978
1-Month
65.84°F
(18.80°C)
64.86°F
(18.26°C)
0.98°F
(0.54°C)
85th Coolest
Coolest since:
1965
44th Warmest
Warmest since:
1998
Aug–Sep 1978
2-Month
68.82°F
(20.46°C)
68.48°F
(20.27°C)
0.34°F
(0.19°C)
68th Coolest
Coolest since:
1974
61st Warmest
Warmest since:
1998
Jul–Sep 1978
3-Month
70.48°F
(21.38°C)
70.19°F
(21.22°C)
0.29°F
(0.16°C)
71st Coolest
Coolest since:
1950
58th Warmest
Warmest since:
2022
Jun–Sep 1978
4-Month
70.10°F
(21.17°C)
69.77°F
(20.98°C)
0.33°F
(0.19°C)
70th Coolest
Coolest since:
1903
59th Warmest
Warmest since:
2022
Ties: 1911
May–Sep 1978
5-Month
68.02°F
(20.01°C)
67.85°F
(19.92°C)
0.17°F
(0.09°C)
58th Coolest
Coolest since:
1907
71st Warmest
Warmest since:
2018
Apr–Sep 1978
6-Month
65.28°F
(18.49°C)
65.05°F
(18.36°C)
0.23°F
(0.13°C)
66th Coolest
Coolest since:
1907
63rd Warmest
Warmest since:
2012
Ties: 1901
Mar–Sep 1978
7-Month
61.86°F
(16.59°C)
61.69°F
(16.49°C)
0.17°F
(0.10°C)
68th Coolest
Coolest since:
1912
61st Warmest
Warmest since:
2012
Ties: 1905
Feb–Sep 1978
8-Month
57.63°F
(14.24°C)
58.21°F
(14.56°C)
-0.58°F
(-0.32°C)
29th Coolest
Coolest since:
1917
100th Warmest
Warmest since:
2012
Jan–Sep 1978
9-Month
54.10°F
(12.28°C)
55.09°F
(12.83°C)
-0.99°F
(-0.55°C)
16th Coolest
Coolest since:
1912
113th Warmest
Warmest since:
2012
Dec 1977–Sep 1978
10-Month
52.01°F
(11.12°C)
52.85°F
(11.58°C)
-0.84°F
(-0.46°C)
17th Coolest
Coolest since:
1917
111th Warmest
Warmest since:
2012
Nov 1977–Sep 1978
11-Month
51.18°F
(10.66°C)
51.84°F
(11.02°C)
-0.66°F
(-0.36°C)
17th Coolest
Coolest since:
1912
111th Warmest
Warmest since:
2012
Ties: 1948
Oct 1977–Sep 1978
12-Month
51.42°F
(10.79°C)
52.03°F
(11.13°C)
-0.61°F
(-0.34°C)
22nd Coolest
Coolest since:
1912
106th Warmest
Warmest since:
2012
Apr 1977–Sep 1978
18-Month
56.40°F
(13.56°C)
56.37°F
(13.54°C)
0.03°F
(0.02°C)
57th Coolest
Coolest since:
1917
71st Warmest
Warmest since:
2012
Ties: 1944, 1956
Oct 1976–Sep 1978
24-Month
51.54°F
(10.86°C)
52.02°F
(11.12°C)
-0.48°F
(-0.26°C)
22nd Coolest
Coolest since:
1913, 1918
105th Warmest
Warmest since:
2017
Oct 1975–Sep 1978
36-Month
51.85°F
(11.03°C)
52.00°F
(11.11°C)
-0.15°F
(-0.08°C)
46th Coolest
Coolest since:
1917
80th Warmest
Warmest since:
2018
Oct 1974–Sep 1978
48-Month
51.73°F
(10.96°C)
51.99°F
(11.11°C)
-0.26°F
(-0.15°C)
31st Coolest
Coolest since:
1918
94th Warmest
Warmest since:
2018
Ties: 1901, 1950, 1967
Oct 1973–Sep 1978
60-Month
51.88°F
(11.04°C)
51.98°F
(11.10°C)
-0.10°F
(-0.06°C)
48th Coolest
Coolest since:
1920
76th Warmest
Warmest since:
2020
Ties: 1950

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