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 1916

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1916
1-Month
49.96°F
(9.98°C)
51.90°F
(11.06°C)
-1.94°F
(-1.08°C)
7th Coolest
Coolest since:
1918
122nd Warmest
Warmest since:
2019
Aug–Sep 1916
2-Month
54.42°F
(12.46°C)
55.47°F
(13.04°C)
-1.05°F
(-0.58°C)
15th Coolest
Coolest since:
1974
114th Warmest
Warmest since:
2019
Jul–Sep 1916
3-Month
56.77°F
(13.76°C)
57.17°F
(13.98°C)
-0.40°F
(-0.22°C)
36th Coolest
Coolest since:
1924
93rd Warmest
Warmest since:
2022
Jun–Sep 1916
4-Month
55.93°F
(13.29°C)
56.78°F
(13.77°C)
-0.85°F
(-0.48°C)
16th Coolest
Coolest since:
1903
113th Warmest
Warmest since:
2021
May–Sep 1916
5-Month
54.02°F
(12.23°C)
54.91°F
(12.73°C)
-0.89°F
(-0.50°C)
11th Coolest
Coolest since:
1907, 1924
118th Warmest
Warmest since:
2018
Apr–Sep 1916
6-Month
51.35°F
(10.75°C)
52.19°F
(11.22°C)
-0.84°F
(-0.47°C)
10th Coolest
Coolest since:
1907
119th Warmest
Warmest since:
2018
Ties: 1976
Mar–Sep 1916
7-Month
48.26°F
(9.03°C)
49.03°F
(9.46°C)
-0.77°F
(-0.43°C)
14th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2012
Feb–Sep 1916
8-Month
44.93°F
(7.18°C)
45.74°F
(7.63°C)
-0.81°F
(-0.45°C)
17th Coolest
Coolest since:
1917
112th Warmest
Warmest since:
2012
Jan–Sep 1916
9-Month
41.96°F
(5.53°C)
42.86°F
(6.03°C)
-0.90°F
(-0.50°C)
13th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2012
Dec 1915–Sep 1916
10-Month
40.07°F
(4.48°C)
40.83°F
(4.91°C)
-0.76°F
(-0.43°C)
18th Coolest
Coolest since:
1917
110th Warmest
Warmest since:
2016
Nov 1915–Sep 1916
11-Month
39.29°F
(4.05°C)
39.91°F
(4.39°C)
-0.62°F
(-0.34°C)
22nd Coolest
Coolest since:
1917
106th Warmest
Warmest since:
2016
Ties: 1960
Oct 1915–Sep 1916
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: 1915, 1937, 1960
Apr 1915–Sep 1916
18-Month
43.58°F
(6.43°C)
44.09°F
(6.72°C)
-0.51°F
(-0.29°C)
20th Coolest
Coolest since:
1917
108th Warmest
Warmest since:
2016
Oct 1914–Sep 1916
24-Month
39.50°F
(4.17°C)
40.03°F
(4.46°C)
-0.53°F
(-0.29°C)
18th Coolest
Coolest since:
1918
109th Warmest
Warmest since:
2017
Oct 1913–Sep 1916
36-Month
39.82°F
(4.34°C)
40.02°F
(4.46°C)
-0.20°F
(-0.12°C)
40th Coolest
Coolest since:
1918
86th Warmest
Warmest since:
2017, 2018
Ties: 1963
Oct 1912–Sep 1916
48-Month
39.66°F
(4.26°C)
40.01°F
(4.45°C)
-0.35°F
(-0.19°C)
24th Coolest
Coolest since:
1918
101st Warmest
Warmest since:
2018
Ties: 1902
Oct 1911–Sep 1916
60-Month
39.36°F
(4.09°C)
40.00°F
(4.44°C)
-0.64°F
(-0.35°C)
5th Coolest
Coolest since:
1920
119th Warmest
Warmest since:
2019, 2020
Ties: 1906

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