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, September 1977

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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1977
1-Month
54.07°F
(12.26°C)
51.90°F
(11.06°C)
2.17°F
(1.20°C)
115th Coolest
Coolest since:
1918
14th Warmest
Warmest since:
2019
Aug–Sep 1977
2-Month
56.80°F
(13.78°C)
55.47°F
(13.04°C)
1.33°F
(0.74°C)
106th Coolest
Coolest since:
1974
23rd Warmest
Warmest since:
2019
Ties: 1933
Jul–Sep 1977
3-Month
58.32°F
(14.62°C)
57.16°F
(13.98°C)
1.16°F
(0.64°C)
104th Coolest
Coolest since:
1924
25th Warmest
Warmest since:
2022
Jun–Sep 1977
4-Month
58.02°F
(14.46°C)
56.78°F
(13.77°C)
1.24°F
(0.69°C)
107th Coolest
Coolest since:
1903
22nd Warmest
Warmest since:
2021
May–Sep 1977
5-Month
56.26°F
(13.48°C)
54.91°F
(12.73°C)
1.35°F
(0.75°C)
112th Coolest
Coolest since:
1907, 1924
17th Warmest
Warmest since:
2018
Apr–Sep 1977
6-Month
53.65°F
(12.03°C)
52.20°F
(11.22°C)
1.45°F
(0.81°C)
116th Coolest
Coolest since:
1907
13th Warmest
Warmest to Date
2018
Mar–Sep 1977
7-Month
50.46°F
(10.26°C)
49.02°F
(9.46°C)
1.44°F
(0.80°C)
112th Coolest
Coolest since:
1917
17th Warmest
Warmest to Date
2012
Feb–Sep 1977
8-Month
47.10°F
(8.39°C)
45.75°F
(7.64°C)
1.35°F
(0.75°C)
108th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
2012
Jan–Sep 1977
9-Month
43.26°F
(6.26°C)
42.86°F
(6.03°C)
0.40°F
(0.23°C)
79th Coolest
Coolest since:
1917
50th Warmest
Warmest since:
2012
Ties: 1898
Dec 1976–Sep 1977
10-Month
40.80°F
(4.89°C)
40.84°F
(4.91°C)
-0.04°F
(-0.02°C)
51st Coolest
Coolest since:
1917
77th Warmest
Warmest since:
2016
Ties: 1909, 1985
Nov 1976–Sep 1977
11-Month
39.49°F
(4.16°C)
39.92°F
(4.40°C)
-0.43°F
(-0.24°C)
29th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
2016
Oct 1976–Sep 1977
12-Month
39.30°F
(4.06°C)
40.04°F
(4.47°C)
-0.74°F
(-0.41°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2016
Ties: 1950
Apr 1976–Sep 1977
18-Month
43.32°F
(6.29°C)
44.10°F
(6.72°C)
-0.78°F
(-0.43°C)
11th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
2016
Oct 1975–Sep 1977
24-Month
39.69°F
(4.27°C)
40.04°F
(4.47°C)
-0.35°F
(-0.20°C)
33rd Coolest
Coolest since:
1918
94th Warmest
Warmest since:
2017
Ties: 1970
Oct 1974–Sep 1977
36-Month
39.71°F
(4.28°C)
40.02°F
(4.46°C)
-0.31°F
(-0.18°C)
31st Coolest
Coolest since:
1918
95th Warmest
Warmest since:
2017, 2018
Ties: 1901, 1915, 1968
Oct 1973–Sep 1977
48-Month
39.90°F
(4.39°C)
40.01°F
(4.45°C)
-0.11°F
(-0.06°C)
47th Coolest
Coolest since:
1918
78th Warmest
Warmest since:
2018
Oct 1972–Sep 1977
60-Month
39.94°F
(4.41°C)
40.00°F
(4.44°C)
-0.06°F
(-0.03°C)
52nd Coolest
Coolest since:
1920
72nd Warmest
Warmest since:
2019, 2020
Ties: 1911, 1960

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