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 1903

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1903
1-Month
49.78°F
(9.88°C)
51.90°F
(11.06°C)
-2.12°F
(-1.18°C)
6th Coolest
Coolest since:
1918
123rd Warmest
Warmest since:
2019
Aug–Sep 1903
2-Month
54.12°F
(12.29°C)
55.48°F
(13.04°C)
-1.36°F
(-0.75°C)
6th Coolest
Coolest since:
1974
123rd Warmest
Warmest since:
2019
Jul–Sep 1903
3-Month
55.77°F
(13.21°C)
57.16°F
(13.98°C)
-1.39°F
(-0.77°C)
5th Coolest
Coolest since:
1924
124th Warmest
Warmest since:
2022
Jun–Sep 1903
4-Month
55.24°F
(12.91°C)
56.78°F
(13.77°C)
-1.54°F
(-0.86°C)
1st Coolest
Coolest since:
1903
128th Warmest
Warmest since:
2021
May–Sep 1903
5-Month
53.63°F
(12.02°C)
54.92°F
(12.73°C)
-1.29°F
(-0.71°C)
5th Coolest
Coolest since:
1907, 1924
124th Warmest
Warmest since:
2018
Apr–Sep 1903
6-Month
51.01°F
(10.56°C)
52.19°F
(11.22°C)
-1.18°F
(-0.66°C)
5th Coolest
Coolest since:
1907
124th Warmest
Warmest since:
2018
Mar–Sep 1903
7-Month
48.27°F
(9.04°C)
49.03°F
(9.46°C)
-0.76°F
(-0.42°C)
15th Coolest
Coolest since:
1917
114th Warmest
Warmest since:
2012
Feb–Sep 1903
8-Month
44.44°F
(6.91°C)
45.75°F
(7.64°C)
-1.31°F
(-0.73°C)
7th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2012
Jan–Sep 1903
9-Month
41.83°F
(5.46°C)
42.86°F
(6.03°C)
-1.03°F
(-0.57°C)
10th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2012
Ties: 1913
Dec 1902–Sep 1903
10-Month
39.79°F
(4.33°C)
40.84°F
(4.91°C)
-1.05°F
(-0.58°C)
12th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2016
Nov 1902–Sep 1903
11-Month
39.25°F
(4.03°C)
39.92°F
(4.40°C)
-0.67°F
(-0.37°C)
19th Coolest
Coolest since:
1917
109th Warmest
Warmest since:
2016
Ties: 1902
Oct 1902–Sep 1903
12-Month
39.44°F
(4.13°C)
40.04°F
(4.47°C)
-0.60°F
(-0.34°C)
17th Coolest
Coolest since:
1917
111th Warmest
Warmest since:
2016
Apr 1902–Sep 1903
18-Month
43.50°F
(6.39°C)
44.10°F
(6.72°C)
-0.60°F
(-0.33°C)
16th Coolest
Coolest since:
1917
112th Warmest
Warmest since:
2016
Oct 1901–Sep 1903
24-Month
39.47°F
(4.15°C)
40.03°F
(4.46°C)
-0.56°F
(-0.31°C)
15th Coolest
Coolest since:
1918
112th Warmest
Warmest since:
2017
Oct 1900–Sep 1903
36-Month
39.75°F
(4.31°C)
40.02°F
(4.46°C)
-0.27°F
(-0.15°C)
36th Coolest
Coolest since:
1918
90th Warmest
Warmest since:
2017, 2018
Ties: 1929, 1972
Oct 1899–Sep 1903
48-Month
40.01°F
(4.45°C)
40.01°F
(4.45°C)
0.00°F
(0.00°C)
57th Coolest
Coolest since:
1918
68th Warmest
Warmest to Date
2018
Oct 1898–Sep 1903
60-Month
39.62°F
(4.23°C)
40.00°F
(4.44°C)
-0.38°F
(-0.21°C)
19th Coolest
Coolest since:
1920
105th Warmest
Warmest since:
2019, 2020
Ties: 1969

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