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 1970

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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
(1895-2022)
Warmest/Coolest
Since
Record
September 1970
1-Month
51.87°F
(11.04°C)
51.90°F
(11.06°C)
-0.03°F
(-0.02°C)
52nd Coolest
Coolest since:
1918
77th Warmest
Warmest since:
2019
Aug–Sep 1970
2-Month
55.89°F
(13.27°C)
55.48°F
(13.04°C)
0.41°F
(0.23°C)
74th Coolest
Coolest since:
1974
55th Warmest
Warmest since:
2019
Jul–Sep 1970
3-Month
57.49°F
(14.16°C)
57.16°F
(13.98°C)
0.33°F
(0.18°C)
69th Coolest
Coolest since:
1924
60th Warmest
Warmest since:
2022
Jun–Sep 1970
4-Month
57.10°F
(13.94°C)
56.78°F
(13.77°C)
0.32°F
(0.17°C)
71st Coolest
Coolest since:
1903
58th Warmest
Warmest since:
2021
Ties: 1911
May–Sep 1970
5-Month
55.23°F
(12.91°C)
54.92°F
(12.73°C)
0.31°F
(0.18°C)
70th Coolest
Coolest since:
1907, 1924
59th Warmest
Warmest since:
2018
Apr–Sep 1970
6-Month
52.27°F
(11.26°C)
52.19°F
(11.22°C)
0.08°F
(0.04°C)
56th Coolest
Coolest since:
1907
73rd Warmest
Warmest since:
2018
Mar–Sep 1970
7-Month
48.77°F
(9.32°C)
49.03°F
(9.46°C)
-0.26°F
(-0.14°C)
39th Coolest
Coolest since:
1917
90th Warmest
Warmest since:
2012
Feb–Sep 1970
8-Month
45.58°F
(7.54°C)
45.74°F
(7.63°C)
-0.16°F
(-0.09°C)
48th Coolest
Coolest since:
1917
81st Warmest
Warmest since:
2012
Jan–Sep 1970
9-Month
42.41°F
(5.78°C)
42.86°F
(6.03°C)
-0.45°F
(-0.25°C)
34th Coolest
Coolest since:
1917
95th Warmest
Warmest since:
2012
Ties: 1915, 1947
Dec 1969–Sep 1970
10-Month
40.55°F
(4.75°C)
40.84°F
(4.91°C)
-0.29°F
(-0.16°C)
36th Coolest
Coolest since:
1917
92nd Warmest
Warmest since:
2016
Ties: 1937, 1963, 1967
Nov 1969–Sep 1970
11-Month
39.59°F
(4.22°C)
39.91°F
(4.39°C)
-0.32°F
(-0.17°C)
34th Coolest
Coolest since:
1917
94th Warmest
Warmest since:
2016
Oct 1969–Sep 1970
12-Month
39.62°F
(4.23°C)
40.04°F
(4.47°C)
-0.42°F
(-0.24°C)
29th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
2016
Ties: 1964
Apr 1969–Sep 1970
18-Month
44.00°F
(6.67°C)
44.10°F
(6.72°C)
-0.10°F
(-0.05°C)
50th Coolest
Coolest since:
1917
78th Warmest
Warmest since:
2016
Oct 1968–Sep 1970
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: 1977
Oct 1967–Sep 1970
36-Month
39.62°F
(4.23°C)
40.03°F
(4.46°C)
-0.41°F
(-0.23°C)
21st Coolest
Coolest since:
1918
105th Warmest
Warmest since:
2017, 2018
Oct 1966–Sep 1970
48-Month
39.64°F
(4.24°C)
40.00°F
(4.44°C)
-0.36°F
(-0.20°C)
22nd Coolest
Coolest since:
1918
103rd Warmest
Warmest since:
2018
Oct 1965–Sep 1970
60-Month
39.70°F
(4.28°C)
40.00°F
(4.44°C)
-0.30°F
(-0.16°C)
28th Coolest
Coolest since:
1920
96th Warmest
Warmest since:
2019, 2020

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