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, October 2009

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  • Record Coolest
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  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
October 2009
1-Month
40.10°F
(4.50°C)
41.41°F
(5.23°C)
-1.31°F
(-0.73°C)
24th Coolest
Coolest since:
1917
105th Warmest
Warmest since:
1947
Sep–Oct 2009
2-Month
46.96°F
(8.31°C)
46.65°F
(8.14°C)
0.31°F
(0.17°C)
71st Coolest
Coolest since:
1917
58th Warmest
Warmest since:
2015
Aug–Oct 2009
3-Month
51.04°F
(10.58°C)
50.79°F
(10.44°C)
0.25°F
(0.14°C)
68th Coolest
Coolest since:
1917
61st Warmest
Warmest since:
2016
Jul–Oct 2009
4-Month
53.26°F
(11.81°C)
53.22°F
(11.79°C)
0.04°F
(0.02°C)
60th Coolest
Coolest since:
1976
69th Warmest
Warmest since:
2021
Jun–Oct 2009
5-Month
53.91°F
(12.17°C)
53.71°F
(12.06°C)
0.20°F
(0.11°C)
69th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
2021
May–Oct 2009
6-Month
53.11°F
(11.73°C)
52.66°F
(11.48°C)
0.45°F
(0.25°C)
82nd Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2018
Apr–Oct 2009
7-Month
51.01°F
(10.56°C)
50.65°F
(10.36°C)
0.36°F
(0.20°C)
78th Coolest
Coolest since:
1917
51st Warmest
Warmest since:
2015
Mar–Oct 2009
8-Month
48.50°F
(9.17°C)
48.07°F
(8.93°C)
0.43°F
(0.24°C)
85th Coolest
Coolest since:
1917
44th Warmest
Warmest since:
2016
Feb–Oct 2009
9-Month
45.89°F
(7.72°C)
45.27°F
(7.37°C)
0.62°F
(0.35°C)
86th Coolest
Coolest since:
1917
43rd Warmest
Warmest since:
2016
Jan–Oct 2009
10-Month
43.28°F
(6.27°C)
42.72°F
(5.96°C)
0.56°F
(0.31°C)
89th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2016
Ties: 1925
Dec 2008–Oct 2009
11-Month
41.27°F
(5.15°C)
40.90°F
(4.94°C)
0.37°F
(0.21°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2016
Ties: 1932
Nov 2008–Oct 2009
12-Month
40.57°F
(4.76°C)
40.04°F
(4.47°C)
0.53°F
(0.29°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2016
May 2008–Oct 2009
18-Month
44.68°F
(7.04°C)
44.25°F
(6.81°C)
0.43°F
(0.23°C)
84th Coolest
Coolest since:
1917
44th Warmest
Warmest since:
2016
Nov 2007–Oct 2009
24-Month
40.41°F
(4.67°C)
40.03°F
(4.46°C)
0.38°F
(0.21°C)
79th Coolest
Coolest since:
1917, 1918
48th Warmest
Warmest since:
2017
Ties: 1938
Nov 2006–Oct 2009
36-Month
40.92°F
(4.96°C)
40.02°F
(4.46°C)
0.90°F
(0.50°C)
101st Coolest
Coolest since:
1918
25th Warmest
Warmest since:
2017
Nov 2005–Oct 2009
48-Month
41.15°F
(5.08°C)
40.01°F
(4.45°C)
1.14°F
(0.63°C)
104th Coolest
Coolest since:
1918
21st Warmest
Warmest since:
2018
Ties: 1999
Nov 2004–Oct 2009
60-Month
41.32°F
(5.18°C)
40.00°F
(4.44°C)
1.32°F
(0.74°C)
104th Coolest
Coolest since:
1920
20th Warmest
Warmest since:
2019, 2020

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