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 June 2020. For more information, please see Climatological Rankings.


Contiguous U.S.

Average Temperature Rankings, September 1999

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1999
1-Month
64.35°F
(17.97°C)
64.86°F
(18.26°C)
-0.51°F
(-0.29°C)
40th Coolest Coolest since: 1996 1965
86th Warmest Warmest since: 1998 1998
Aug–Sep 1999
2-Month
68.63°F
(20.35°C)
68.48°F
(20.27°C)
0.15°F
(0.08°C)
61st Coolest Coolest since: 1996 1974
65th Warmest Warmest since: 1998 1998
Ties: 1932
Jul–Sep 1999
3-Month
70.52°F
(21.40°C)
70.19°F
(21.22°C)
0.33°F
(0.18°C)
75th Coolest Coolest since: 1997 1950
51st Warmest Warmest since: 1998 1998
Ties: 2008
Jun–Sep 1999
4-Month
69.97°F
(21.09°C)
69.77°F
(20.98°C)
0.20°F
(0.11°C)
64th Coolest Coolest since: 1997 1903
62nd Warmest Warmest since: 1998 1936
May–Sep 1999
5-Month
67.99°F
(19.99°C)
67.86°F
(19.92°C)
0.13°F
(0.07°C)
57th Coolest Coolest since: 1997 1907
69th Warmest Warmest since: 1998 2018
Apr–Sep 1999
6-Month
65.25°F
(18.47°C)
65.06°F
(18.37°C)
0.19°F
(0.10°C)
61st Coolest Coolest since: 1997 1907
65th Warmest Warmest since: 1998 2012
Mar–Sep 1999
7-Month
62.04°F
(16.69°C)
61.69°F
(16.49°C)
0.35°F
(0.20°C)
76th Coolest Coolest since: 1997 1912
50th Warmest Warmest since: 1998 2012
Ties: 1953
Feb–Sep 1999
8-Month
59.22°F
(15.12°C)
58.20°F
(14.56°C)
1.02°F
(0.56°C)
98th Coolest Coolest since: 1997 1917
28th Warmest Warmest since: 1998 2012
Jan–Sep 1999
9-Month
56.39°F
(13.55°C)
55.08°F
(12.82°C)
1.31°F
(0.73°C)
106th Coolest Coolest since: 1997 1912
20th Warmest Warmest since: 1998 2012
Dec 1998–Sep 1999
10-Month
54.31°F
(12.39°C)
52.85°F
(11.58°C)
1.46°F
(0.81°C)
111th Coolest Coolest since: 1997 1917
14th Warmest Warmest since: 1998 2012
Nov 1998–Sep 1999
11-Month
53.46°F
(11.92°C)
51.84°F
(11.02°C)
1.62°F
(0.90°C)
112th Coolest Coolest since: 1997 1912
13th Warmest Warmest since: 1998 2012
Oct 1998–Sep 1999
12-Month
53.60°F
(12.00°C)
52.03°F
(11.13°C)
1.57°F
(0.87°C)
113th Coolest Coolest since: 1997 1912
12th Warmest Warmest since: 1998 2012
Ties: 2007
Apr 1998–Sep 1999
18-Month
57.96°F
(14.42°C)
56.37°F
(13.54°C)
1.59°F
(0.88°C)
115th Coolest Coolest since: 1998 1917
10th Warmest Warmest since: 1934 2012
Oct 1997–Sep 1999
24-Month
53.63°F
(12.02°C)
52.02°F
(11.12°C)
1.61°F
(0.90°C)
115th Coolest Coolest since: 1998 1913, 1918
9th Warmest Warmest to Date 2017
Oct 1996–Sep 1999
36-Month
53.11°F
(11.73°C)
52.00°F
(11.11°C)
1.11°F
(0.62°C)
107th Coolest Coolest since: 1998 1917
16th Warmest Warmest to Date 2018
Oct 1995–Sep 1999
48-Month
52.86°F
(11.59°C)
51.99°F
(11.11°C)
0.87°F
(0.48°C)
99th Coolest Coolest since: 1998 1918
23rd Warmest Warmest since: 1992 2018
Oct 1994–Sep 1999
60-Month
52.87°F
(11.59°C)
51.98°F
(11.10°C)
0.89°F
(0.49°C)
99th Coolest Coolest since: 1998 1920
22nd Warmest Warmest since: 1991 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published July 2020, retrieved on July 12, 2020 from https://www.ncdc.noaa.gov/cag/