National Rankings

National Data Info
Please note, 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.

September 2021 Maximum Temperature Rankings

View Period (Months):
  • Record Coolest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Warmest
PeriodValue
1901-2000
Mean
AnomalyRank
(1895-2024)
Coolest/Warmest
Since
Record
September 2021
1-Month
81.09°F
(27.27°C)
77.78°F
(25.43°C)
3.31°F122nd Coolest
Coolest since:
1965
9th Warmest
Warmest since:
1998
Aug–Sep 2021
2-Month
83.68°F
(28.71°C)
81.45°F
(27.47°C)
2.23°F120th Coolest
Coolest since:
1965
11th Warmest
Warmest since:
1998
Jul–Sep 2021
3-Month
84.99°F
(29.44°C)
83.18°F
(28.43°C)
1.81°F118th Coolest
Coolest since:
1912
13th Warmest
Warmest since:
1936
Jun–Sep 2021
4-Month
85.14°F
(29.52°C)
82.71°F
(28.17°C)
2.43°F126th Coolest
Coolest since:
1915
5th Warmest
Warmest since:
1936
May–Sep 2021
5-Month
82.68°F
(28.16°C)
80.76°F
(27.09°C)
1.92°F123rd Coolest
Coolest since:
1915
8th Warmest
Warmest since:
1936
Apr–Sep 2021
6-Month
79.71°F
(26.51°C)
77.88°F
(25.49°C)
1.83°F123rd Coolest
Coolest since:
1907
8th Warmest
Warmest since:
2012
Mar–Sep 2021
7-Month
76.59°F
(24.77°C)
74.32°F
(23.51°C)
2.27°F126th Coolest
Coolest since:
1912
5th Warmest
Warmest since:
2012
Feb–Sep 2021
8-Month
72.12°F
(22.29°C)
70.63°F
(21.46°C)
1.49°F112th Coolest
Coolest since:
1912
19th Warmest
Warmest since:
2012
Jan–Sep 2021
9-Month
68.99°F
(20.55°C)
67.28°F
(19.60°C)
1.71°F115th Coolest
Coolest since:
1912
16th Warmest
Warmest since:
2012
Dec 2020–Sep 2021
10-Month
66.75°F
(19.31°C)
64.84°F
(18.24°C)
1.91°F119th Coolest
Coolest since:
1912
11th Warmest
Warmest since:
2012
Nov 2020–Sep 2021
11-Month
65.98°F
(18.88°C)
63.74°F
(17.63°C)
2.24°F120th Coolest
Coolest since:
1912
10th Warmest
Warmest since:
2012
Oct 2020–Sep 2021
12-Month
66.06°F
(18.92°C)
63.99°F
(17.77°C)
2.07°F120th Coolest
Coolest since:
1912
10th Warmest
Warmest since:
2012
Apr 2020–Sep 2021
18-Month
70.43°F
(21.35°C)
68.62°F
(20.34°C)
1.81°F120th Coolest
Coolest since:
1912
10th Warmest
Warmest since:
2012
Oct 2019–Sep 2021
24-Month
65.80°F
(18.78°C)
63.98°F
(17.77°C)
1.82°F117th Coolest
Coolest since:
1913
12th Warmest
Warmest since:
2017
Oct 2018–Sep 2021
36-Month
65.13°F
(18.41°C)
63.96°F
(17.76°C)
1.17°F106th Coolest
Coolest since:
1917
22nd Warmest
Warmest since:
2018
Oct 2017–Sep 2021
48-Month
65.33°F
(18.52°C)
63.95°F
(17.75°C)
1.38°F111th Coolest
Coolest since:
1915
16th Warmest
Warmest since:
2024
Ties: 2012
Oct 2016–Sep 2021
60-Month
65.57°F
(18.65°C)
63.94°F
(17.74°C)
1.63°F119th Coolest
Coolest since:
1907
7th Warmest
Warmest since:
2024
Ties: 2002

Citing This Page