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 1988

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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 1988
1-Month
77.61°F
(25.34°C)
77.81°F
(25.45°C)
-0.20°F
(-0.11°C)
54th Coolest
Coolest since:
1965
75th Warmest
Warmest since:
1998
Ties: 1914
Aug–Sep 1988
2-Month
82.24°F
(27.91°C)
81.48°F
(27.49°C)
0.76°F
(0.42°C)
86th Coolest
Coolest since:
1965
43rd Warmest
Warmest since:
1998
Jul–Sep 1988
3-Month
84.22°F
(29.01°C)
83.21°F
(28.45°C)
1.01°F
(0.56°C)
93rd Coolest
Coolest since:
1912
36th Warmest
Warmest since:
1936
Jun–Sep 1988
4-Month
84.42°F
(29.12°C)
82.74°F
(28.19°C)
1.68°F
(0.93°C)
113th Coolest
Coolest since:
1915
16th Warmest
Warmest since:
1936
May–Sep 1988
5-Month
82.53°F
(28.07°C)
80.79°F
(27.11°C)
1.74°F
(0.96°C)
120th Coolest
Coolest since:
1915
9th Warmest
Warmest since:
1936
Apr–Sep 1988
6-Month
79.65°F
(26.47°C)
77.90°F
(25.50°C)
1.75°F
(0.97°C)
120th Coolest
Coolest since:
1907
9th Warmest
Warmest since:
2012
Mar–Sep 1988
7-Month
76.12°F
(24.51°C)
74.35°F
(23.53°C)
1.77°F
(0.98°C)
117th Coolest
Coolest since:
1912
12th Warmest
Warmest since:
2012
Ties: 2015
Feb–Sep 1988
8-Month
72.31°F
(22.39°C)
70.66°F
(21.48°C)
1.65°F
(0.91°C)
116th Coolest
Coolest since:
1912
13th Warmest
Warmest since:
2012
Jan–Sep 1988
9-Month
68.51°F
(20.28°C)
67.30°F
(19.61°C)
1.21°F
(0.67°C)
101st Coolest
Coolest since:
1912
28th Warmest
Warmest since:
2012
Dec 1987–Sep 1988
10-Month
66.05°F
(18.92°C)
64.85°F
(18.25°C)
1.20°F
(0.67°C)
104th Coolest
Coolest since:
1912
24th Warmest
Warmest since:
2012
Ties: 1990
Nov 1987–Sep 1988
11-Month
65.03°F
(18.35°C)
63.75°F
(17.64°C)
1.28°F
(0.71°C)
109th Coolest
Coolest since:
1912
19th Warmest
Warmest since:
2012
Ties: 1990
Oct 1987–Sep 1988
12-Month
65.19°F
(18.44°C)
64.01°F
(17.78°C)
1.18°F
(0.66°C)
107th Coolest
Coolest since:
1912
21st Warmest
Warmest since:
2012
Apr 1987–Sep 1988
18-Month
69.87°F
(21.04°C)
68.64°F
(20.36°C)
1.23°F
(0.68°C)
111th Coolest
Coolest since:
1912
17th Warmest
Warmest since:
2012
Ties: 2020
Oct 1986–Sep 1988
24-Month
65.05°F
(18.36°C)
63.99°F
(17.77°C)
1.06°F
(0.59°C)
104th Coolest
Coolest since:
1913
23rd Warmest
Warmest since:
2017
Oct 1985–Sep 1988
36-Month
64.82°F
(18.23°C)
63.98°F
(17.77°C)
0.84°F
(0.46°C)
95th Coolest
Coolest since:
1917
31st Warmest
Warmest since:
2018
Oct 1984–Sep 1988
48-Month
64.52°F
(18.07°C)
63.97°F
(17.76°C)
0.55°F
(0.31°C)
85th Coolest
Coolest since:
1915
40th Warmest
Warmest since:
2018
Oct 1983–Sep 1988
60-Month
64.22°F
(17.90°C)
63.97°F
(17.76°C)
0.25°F
(0.14°C)
73rd Coolest
Coolest since:
1907
51st Warmest
Warmest since:
2016

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