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 1989

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1989
1-Month
76.95°F
(24.97°C)
77.81°F
(25.45°C)
-0.86°F
(-0.48°C)
31st Coolest
Coolest since:
1965
98th Warmest
Warmest since:
1998
Aug–Sep 1989
2-Month
80.28°F
(26.82°C)
81.47°F
(27.48°C)
-1.19°F
(-0.66°C)
16th Coolest
Coolest since:
1965
113th Warmest
Warmest since:
1998
Jul–Sep 1989
3-Month
82.53°F
(28.07°C)
83.21°F
(28.45°C)
-0.68°F
(-0.38°C)
30th Coolest
Coolest since:
1912
99th Warmest
Warmest since:
1936
Jun–Sep 1989
4-Month
82.05°F
(27.81°C)
82.74°F
(28.19°C)
-0.69°F
(-0.38°C)
26th Coolest
Coolest since:
1915
103rd Warmest
Warmest since:
1936
Ties: 1923
May–Sep 1989
5-Month
80.27°F
(26.82°C)
80.78°F
(27.10°C)
-0.51°F
(-0.28°C)
35th Coolest
Coolest since:
1915
94th Warmest
Warmest since:
1936
Apr–Sep 1989
6-Month
77.88°F
(25.49°C)
77.90°F
(25.50°C)
-0.02°F
(-0.01°C)
52nd Coolest
Coolest since:
1907
77th Warmest
Warmest since:
2012
Ties: 1941, 1999
Mar–Sep 1989
7-Month
74.54°F
(23.63°C)
74.35°F
(23.53°C)
0.19°F
(0.10°C)
65th Coolest
Coolest since:
1912
64th Warmest
Warmest since:
2012
Feb–Sep 1989
8-Month
70.16°F
(21.20°C)
70.65°F
(21.47°C)
-0.49°F
(-0.27°C)
37th Coolest
Coolest since:
1912
92nd Warmest
Warmest since:
2012
Jan–Sep 1989
9-Month
67.38°F
(19.66°C)
67.30°F
(19.61°C)
0.08°F
(0.05°C)
59th Coolest
Coolest since:
1912
70th Warmest
Warmest since:
2012
Ties: 1896, 1914, 2019
Dec 1988–Sep 1989
10-Month
65.09°F
(18.38°C)
64.85°F
(18.25°C)
0.24°F
(0.13°C)
68th Coolest
Coolest since:
1912
60th Warmest
Warmest since:
2012
Ties: 1910, 1919
Nov 1988–Sep 1989
11-Month
64.09°F
(17.83°C)
63.75°F
(17.64°C)
0.34°F
(0.19°C)
72nd Coolest
Coolest since:
1912
56th Warmest
Warmest since:
2012
Oct 1988–Sep 1989
12-Month
64.33°F
(17.96°C)
64.01°F
(17.78°C)
0.32°F
(0.18°C)
73rd Coolest
Coolest since:
1912
55th Warmest
Warmest since:
2012
Apr 1988–Sep 1989
18-Month
69.44°F
(20.80°C)
68.64°F
(20.36°C)
0.80°F
(0.44°C)
95th Coolest
Coolest since:
1912
33rd Warmest
Warmest since:
2012
Oct 1987–Sep 1989
24-Month
64.76°F
(18.20°C)
64.00°F
(17.78°C)
0.76°F
(0.42°C)
97th Coolest
Coolest since:
1913
30th Warmest
Warmest since:
2017
Oct 1986–Sep 1989
36-Month
64.81°F
(18.23°C)
63.98°F
(17.77°C)
0.83°F
(0.46°C)
94th Coolest
Coolest since:
1917
32nd Warmest
Warmest since:
2018
Oct 1985–Sep 1989
48-Month
64.70°F
(18.17°C)
63.97°F
(17.76°C)
0.73°F
(0.41°C)
91st Coolest
Coolest since:
1915
34th Warmest
Warmest since:
2018
Oct 1984–Sep 1989
60-Month
64.48°F
(18.04°C)
63.96°F
(17.76°C)
0.52°F
(0.28°C)
85th Coolest
Coolest since:
1907
39th Warmest
Warmest since:
2016

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