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 1929

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1929
1-Month
50.97°F
(10.54°C)
51.90°F
(11.06°C)
-0.93°F
(-0.52°C)
30th Coolest
Coolest since:
1918
99th Warmest
Warmest since:
2019
Aug–Sep 1929
2-Month
54.86°F
(12.70°C)
55.48°F
(13.04°C)
-0.62°F
(-0.34°C)
30th Coolest
Coolest since:
1974
99th Warmest
Warmest since:
2019
Ties: 1896, 1915
Jul–Sep 1929
3-Month
56.67°F
(13.71°C)
57.17°F
(13.98°C)
-0.50°F
(-0.27°C)
28th Coolest
Coolest since:
1924
101st Warmest
Warmest since:
2022
Ties: 1920
Jun–Sep 1929
4-Month
56.06°F
(13.37°C)
56.78°F
(13.77°C)
-0.72°F
(-0.40°C)
22nd Coolest
Coolest since:
1903
107th Warmest
Warmest since:
2021
May–Sep 1929
5-Month
54.06°F
(12.26°C)
54.91°F
(12.73°C)
-0.85°F
(-0.47°C)
13th Coolest
Coolest since:
1907, 1924
116th Warmest
Warmest since:
2018
Apr–Sep 1929
6-Month
51.60°F
(10.89°C)
52.20°F
(11.22°C)
-0.60°F
(-0.33°C)
22nd Coolest
Coolest since:
1907
107th Warmest
Warmest since:
2018
Mar–Sep 1929
7-Month
48.82°F
(9.34°C)
49.03°F
(9.46°C)
-0.21°F
(-0.12°C)
41st Coolest
Coolest since:
1917
88th Warmest
Warmest since:
2012
Feb–Sep 1929
8-Month
44.71°F
(7.06°C)
45.75°F
(7.64°C)
-1.04°F
(-0.58°C)
11th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2012
Jan–Sep 1929
9-Month
41.47°F
(5.26°C)
42.86°F
(6.03°C)
-1.39°F
(-0.77°C)
7th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2012
Dec 1928–Sep 1929
10-Month
39.57°F
(4.21°C)
40.84°F
(4.91°C)
-1.27°F
(-0.70°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2016
Nov 1928–Sep 1929
11-Month
38.82°F
(3.79°C)
39.91°F
(4.39°C)
-1.09°F
(-0.60°C)
7th Coolest
Coolest since:
1917
121st Warmest
Warmest since:
2016
Oct 1928–Sep 1929
12-Month
39.15°F
(3.97°C)
40.04°F
(4.47°C)
-0.89°F
(-0.50°C)
9th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2016
Apr 1928–Sep 1929
18-Month
43.12°F
(6.18°C)
44.09°F
(6.72°C)
-0.97°F
(-0.54°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2016
Oct 1927–Sep 1929
24-Month
39.41°F
(4.12°C)
40.04°F
(4.47°C)
-0.63°F
(-0.35°C)
11th Coolest
Coolest since:
1918
116th Warmest
Warmest since:
2017
Ties: 1900, 1950
Oct 1926–Sep 1929
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: 1903, 1972
Oct 1925–Sep 1929
48-Month
39.74°F
(4.30°C)
40.01°F
(4.45°C)
-0.27°F
(-0.15°C)
32nd Coolest
Coolest since:
1918
93rd Warmest
Warmest since:
2018
Ties: 1963, 1978
Oct 1924–Sep 1929
60-Month
39.85°F
(4.36°C)
40.00°F
(4.44°C)
-0.15°F
(-0.08°C)
45th Coolest
Coolest since:
1920
79th Warmest
Warmest since:
2019, 2020

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