Climate at a Glance

National Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2019. For more information, please see Climatological Rankings.


Contiguous U.S.

Average Temperature Rankings, December 2009

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2018)
Warmest/Coolest
Since
Record
December 2009
1-Month
29.64°F
(-1.31°C)
32.68°F
(0.38°C)
-3.04°F
(-1.69°C)
15th Coolest Coolest since: 2000 1983
110th Warmest Warmest since: 2008 2015
Ties: 1917
Nov–Dec 2009
2-Month
37.74°F
(3.19°C)
37.19°F
(2.88°C)
0.55°F
(0.31°C)
69th Coolest Coolest since: 2000 2000
56th Warmest Warmest since: 2008 1999
Oct–Dec 2009
3-Month
41.99°F
(5.55°C)
42.83°F
(6.02°C)
-0.84°F
(-0.47°C)
29th Coolest Coolest since: 2000 1898
96th Warmest Warmest since: 2008 2015
Sep–Dec 2009
4-Month
48.09°F
(8.94°C)
48.34°F
(9.08°C)
-0.25°F
(-0.14°C)
44th Coolest Coolest since: 2000 1976
81st Warmest Warmest since: 2008 2015
Aug–Dec 2009
5-Month
52.85°F
(11.58°C)
53.09°F
(11.72°C)
-0.24°F
(-0.14°C)
42nd Coolest Coolest since: 2000 1976
83rd Warmest Warmest since: 2008 2015
Jul–Dec 2009
6-Month
56.15°F
(13.42°C)
56.51°F
(13.62°C)
-0.36°F
(-0.20°C)
38th Coolest Coolest since: 2000 1976
87th Warmest Warmest since: 2008 2015
Jun–Dec 2009
7-Month
57.92°F
(14.40°C)
58.22°F
(14.57°C)
-0.30°F
(-0.17°C)
43rd Coolest Coolest since: 2000 1976
82nd Warmest Warmest since: 2008 2015
May–Dec 2009
8-Month
58.38°F
(14.66°C)
58.46°F
(14.70°C)
-0.08°F
(-0.04°C)
45th Coolest Coolest since: 1993 1976
80th Warmest Warmest since: 2008 2015
Ties: 1896, 1955, 1971
Apr–Dec 2009
9-Month
57.55°F
(14.19°C)
57.64°F
(14.24°C)
-0.09°F
(-0.05°C)
48th Coolest Coolest since: 1997 1917
77th Warmest Warmest since: 2008 2015
Ties: 1964
Mar–Dec 2009
10-Month
56.09°F
(13.38°C)
56.03°F
(13.35°C)
0.06°F
(0.03°C)
67th Coolest Coolest since: 1997 1917
58th Warmest Warmest since: 2008 2012
Feb–Dec 2009
11-Month
54.33°F
(12.41°C)
54.01°F
(12.23°C)
0.32°F
(0.18°C)
77th Coolest Coolest since: 2008 1917
48th Warmest Warmest since: 2007 2012
Ties: 1992
Jan–Dec 2009
12-Month
52.39°F
(11.33°C)
52.02°F
(11.12°C)
0.37°F
(0.21°C)
82nd Coolest Coolest since: 2008 1917
43rd Warmest Warmest since: 2007 2012
Ties: 1980
Jul 2008–Dec 2009
18-Month
53.89°F
(12.16°C)
53.52°F
(11.96°C)
0.37°F
(0.20°C)
80th Coolest Coolest since: 1997 1917
44th Warmest Warmest since: 2008 2012, 2016
Ties: 1980
Jan 2008–Dec 2009
24-Month
52.34°F
(11.30°C)
52.02°F
(11.12°C)
0.32°F
(0.18°C)
81st Coolest Coolest since: 1997 1917
43rd Warmest Warmest since: 2008 2017
Jan 2007–Dec 2009
36-Month
52.78°F
(11.54°C)
52.01°F
(11.12°C)
0.77°F
(0.42°C)
97th Coolest Coolest since: 1998 1917
26th Warmest Warmest since: 2008 2017
Ties: 1940
Jan 2006–Dec 2009
48-Month
53.15°F
(11.75°C)
52.00°F
(11.11°C)
1.15°F
(0.64°C)
105th Coolest Coolest since: 1999 1917
17th Warmest Warmest since: 2008 2018
Jan 2005–Dec 2009
60-Month
53.25°F
(11.81°C)
51.99°F
(11.11°C)
1.26°F
(0.70°C)
107th Coolest Coolest since: 2000 1920
14th Warmest Warmest since: 2008 2018
Ties: 2013

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published September 2019, retrieved on September 22, 2019 from https://www.ncdc.noaa.gov/cag/