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 October 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Average Temperature Rankings, December 1999

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
December 1999
1-Month
36.10°F
(2.28°C)
32.68°F
(0.38°C)
3.42°F
(1.90°C)
114th Coolest Coolest since: 1998 1983
13th Warmest Warmest since: 1994 2015
Nov–Dec 1999
2-Month
42.10°F
(5.61°C)
37.18°F
(2.88°C)
4.92°F
(2.73°C)
126th Coolest Coolest since: 1998 2000
1st Warmest Warmest to Date 1999
Oct–Dec 1999
3-Month
46.32°F
(7.96°C)
42.83°F
(6.02°C)
3.49°F
(1.94°C)
125th Coolest Coolest since: 1998 1898
2nd Warmest Warmest to Date 2015
Sep–Dec 1999
4-Month
50.83°F
(10.46°C)
48.34°F
(9.08°C)
2.49°F
(1.38°C)
122nd Coolest Coolest since: 1997 1976
5th Warmest Warmest since: 1998 2015
Aug–Dec 1999
5-Month
55.24°F
(12.91°C)
53.09°F
(11.72°C)
2.15°F
(1.19°C)
121st Coolest Coolest since: 1997 1976
6th Warmest Warmest since: 1998 2015
Jul–Dec 1999
6-Month
58.42°F
(14.68°C)
56.51°F
(13.62°C)
1.91°F
(1.06°C)
118th Coolest Coolest since: 1997 1976
9th Warmest Warmest since: 1998 2015
Jun–Dec 1999
7-Month
59.83°F
(15.46°C)
58.22°F
(14.57°C)
1.61°F
(0.89°C)
115th Coolest Coolest since: 1997 1976
12th Warmest Warmest since: 1998 2015
May–Dec 1999
8-Month
59.86°F
(15.48°C)
58.47°F
(14.71°C)
1.39°F
(0.77°C)
110th Coolest Coolest since: 1997 1976
17th Warmest Warmest since: 1998 2015
Apr–Dec 1999
9-Month
58.94°F
(14.97°C)
57.65°F
(14.25°C)
1.29°F
(0.72°C)
112th Coolest Coolest since: 1997 1917
15th Warmest Warmest since: 1998 2015
Mar–Dec 1999
10-Month
57.32°F
(14.07°C)
56.03°F
(13.35°C)
1.29°F
(0.72°C)
110th Coolest Coolest since: 1997 1917
17th Warmest Warmest since: 1998 2012
Ties: 1936, 1994, 2004
Feb–Dec 1999
11-Month
55.70°F
(13.17°C)
54.01°F
(12.23°C)
1.69°F
(0.94°C)
118th Coolest Coolest since: 1997 1917
9th Warmest Warmest since: 1998 2012
Jan–Dec 1999
12-Month
53.88°F
(12.16°C)
52.02°F
(11.12°C)
1.86°F
(1.04°C)
118th Coolest Coolest since: 1997 1917
9th Warmest Warmest since: 1998 2012
Jul 1998–Dec 1999
18-Month
55.59°F
(13.11°C)
53.52°F
(11.96°C)
2.07°F
(1.15°C)
122nd Coolest Coolest since: 1998 1917
4th Warmest Warmest to Date 2012, 2016
Jan 1998–Dec 1999
24-Month
54.05°F
(12.25°C)
52.01°F
(11.12°C)
2.04°F
(1.13°C)
122nd Coolest Coolest since: 1998 1917
4th Warmest Warmest to Date 2017
Jan 1997–Dec 1999
36-Month
53.44°F
(11.91°C)
52.01°F
(11.12°C)
1.43°F
(0.79°C)
113th Coolest Coolest since: 1998 1917
12th Warmest Warmest to Date 2017
Jan 1996–Dec 1999
48-Month
53.05°F
(11.69°C)
52.00°F
(11.11°C)
1.05°F
(0.58°C)
103rd Coolest Coolest since: 1998 1917
21st Warmest Warmest since: 1934 2018
Jan 1995–Dec 1999
60-Month
52.97°F
(11.65°C)
51.99°F
(11.11°C)
0.98°F
(0.54°C)
102nd Coolest Coolest since: 1998 1920
21st Warmest Warmest to Date 2019, 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published November 2021, retrieved on December 2, 2021 from https://www.ncdc.noaa.gov/cag/