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.

Maximum Temperature Rankings, September 1940

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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 1940
1-Month
78.15°F
(25.64°C)
77.81°F
(25.45°C)
0.34°F
(0.19°C)
64th Coolest
Coolest since:
1965
65th Warmest
Warmest since:
1998
Aug–Sep 1940
2-Month
81.70°F
(27.61°C)
81.48°F
(27.49°C)
0.22°F
(0.12°C)
69th Coolest
Coolest since:
1965
60th Warmest
Warmest since:
1998
Ties: 1909
Jul–Sep 1940
3-Month
83.66°F
(28.70°C)
83.21°F
(28.45°C)
0.45°F
(0.25°C)
76th Coolest
Coolest since:
1912
53rd Warmest
Warmest since:
1936
Jun–Sep 1940
4-Month
83.49°F
(28.61°C)
82.74°F
(28.19°C)
0.75°F
(0.42°C)
86th Coolest
Coolest since:
1915
43rd Warmest
Warmest since:
1936
May–Sep 1940
5-Month
81.70°F
(27.61°C)
80.78°F
(27.10°C)
0.92°F
(0.51°C)
101st Coolest
Coolest since:
1915
28th Warmest
Warmest since:
1936
Apr–Sep 1940
6-Month
78.45°F
(25.81°C)
77.90°F
(25.50°C)
0.55°F
(0.31°C)
79th Coolest
Coolest since:
1907
50th Warmest
Warmest since:
2012
Mar–Sep 1940
7-Month
74.80°F
(23.78°C)
74.34°F
(23.52°C)
0.46°F
(0.26°C)
76th Coolest
Coolest since:
1912
53rd Warmest
Warmest since:
2012
Feb–Sep 1940
8-Month
70.88°F
(21.60°C)
70.66°F
(21.48°C)
0.22°F
(0.12°C)
70th Coolest
Coolest since:
1912
59th Warmest
Warmest since:
2012
Jan–Sep 1940
9-Month
66.73°F
(19.29°C)
67.30°F
(19.61°C)
-0.57°F
(-0.32°C)
33rd Coolest
Coolest since:
1912
96th Warmest
Warmest since:
2012
Dec 1939–Sep 1940
10-Month
64.94°F
(18.30°C)
64.85°F
(18.25°C)
0.09°F
(0.05°C)
60th Coolest
Coolest since:
1912
68th Warmest
Warmest since:
2012
Nov 1939–Sep 1940
11-Month
64.03°F
(17.79°C)
63.75°F
(17.64°C)
0.28°F
(0.15°C)
70th Coolest
Coolest since:
1912
58th Warmest
Warmest since:
2012
Oct 1939–Sep 1940
12-Month
64.36°F
(17.98°C)
64.01°F
(17.78°C)
0.35°F
(0.20°C)
76th Coolest
Coolest since:
1912
52nd Warmest
Warmest since:
2012
Ties: 1995
Apr 1939–Sep 1940
18-Month
69.50°F
(20.83°C)
68.63°F
(20.35°C)
0.87°F
(0.48°C)
102nd Coolest
Coolest since:
1912
26th Warmest
Warmest since:
2012
Oct 1938–Sep 1940
24-Month
64.91°F
(18.28°C)
63.99°F
(17.77°C)
0.92°F
(0.51°C)
103rd Coolest
Coolest since:
1913
24th Warmest
Warmest since:
2017
Oct 1937–Sep 1940
36-Month
64.83°F
(18.24°C)
63.98°F
(17.77°C)
0.85°F
(0.47°C)
96th Coolest
Coolest since:
1917
30th Warmest
Warmest since:
2018
Oct 1936–Sep 1940
48-Month
64.54°F
(18.08°C)
63.97°F
(17.76°C)
0.57°F
(0.32°C)
88th Coolest
Coolest since:
1915
37th Warmest
Warmest since:
2018
Ties: 1933, 1999
Oct 1935–Sep 1940
60-Month
64.46°F
(18.03°C)
63.97°F
(17.76°C)
0.49°F
(0.27°C)
83rd Coolest
Coolest since:
1907
41st Warmest
Warmest since:
2016

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