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 1915

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1915
1-Month
52.30°F
(11.28°C)
51.90°F
(11.06°C)
0.40°F
(0.22°C)
69th Coolest
Coolest since:
1918
60th Warmest
Warmest since:
2019
Ties: 1937
Aug–Sep 1915
2-Month
54.86°F
(12.70°C)
55.47°F
(13.04°C)
-0.61°F
(-0.34°C)
30th Coolest
Coolest since:
1974
99th Warmest
Warmest since:
2019
Ties: 1896, 1929
Jul–Sep 1915
3-Month
56.15°F
(13.42°C)
57.16°F
(13.98°C)
-1.01°F
(-0.56°C)
10th Coolest
Coolest since:
1924
119th Warmest
Warmest since:
2022
Jun–Sep 1915
4-Month
55.47°F
(13.04°C)
56.78°F
(13.77°C)
-1.31°F
(-0.73°C)
5th Coolest
Coolest since:
1903
124th Warmest
Warmest since:
2021
May–Sep 1915
5-Month
53.69°F
(12.05°C)
54.91°F
(12.73°C)
-1.22°F
(-0.68°C)
6th Coolest
Coolest since:
1907, 1924
123rd Warmest
Warmest since:
2018
Apr–Sep 1915
6-Month
51.75°F
(10.97°C)
52.20°F
(11.22°C)
-0.45°F
(-0.25°C)
26th Coolest
Coolest since:
1907
103rd Warmest
Warmest since:
2018
Ties: 1908
Mar–Sep 1915
7-Month
48.14°F
(8.97°C)
49.02°F
(9.46°C)
-0.88°F
(-0.49°C)
11th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2012
Feb–Sep 1915
8-Month
45.42°F
(7.46°C)
45.75°F
(7.64°C)
-0.33°F
(-0.18°C)
37th Coolest
Coolest since:
1917
92nd Warmest
Warmest since:
2012
Jan–Sep 1915
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: 1947, 1970
Dec 1914–Sep 1915
10-Month
39.96°F
(4.42°C)
40.83°F
(4.91°C)
-0.87°F
(-0.49°C)
14th Coolest
Coolest since:
1917
114th Warmest
Warmest since:
2016
Nov 1914–Sep 1915
11-Month
39.14°F
(3.97°C)
39.92°F
(4.40°C)
-0.78°F
(-0.43°C)
15th Coolest
Coolest since:
1917
113th Warmest
Warmest since:
2016
Oct 1914–Sep 1915
12-Month
39.50°F
(4.17°C)
40.04°F
(4.47°C)
-0.54°F
(-0.30°C)
20th Coolest
Coolest since:
1917
108th Warmest
Warmest since:
2016
Ties: 1916, 1937, 1960
Apr 1914–Sep 1915
18-Month
43.85°F
(6.58°C)
44.10°F
(6.72°C)
-0.25°F
(-0.14°C)
36th Coolest
Coolest since:
1917
92nd Warmest
Warmest since:
2016
Ties: 1976
Oct 1913–Sep 1915
24-Month
39.99°F
(4.44°C)
40.04°F
(4.47°C)
-0.05°F
(-0.03°C)
54th Coolest
Coolest since:
1918
73rd Warmest
Warmest since:
2017
Ties: 1911
Oct 1912–Sep 1915
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, 1968, 1977
Oct 1911–Sep 1915
48-Month
39.33°F
(4.07°C)
40.01°F
(4.45°C)
-0.68°F
(-0.38°C)
6th Coolest
Coolest since:
1918
119th Warmest
Warmest since:
2018
Ties: 1906, 1913
Oct 1910–Sep 1915
60-Month
39.56°F
(4.20°C)
40.00°F
(4.44°C)
-0.44°F
(-0.24°C)
13th Coolest
Coolest since:
1920
111th Warmest
Warmest since:
2019, 2020
Ties: 1914

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