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


Contiguous U.S.

Maximum Temperature Rankings, September 1999

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1999
1-Month
77.94°F
(25.52°C)
77.81°F
(25.45°C)
0.13°F
(0.07°C)
59th Coolest Coolest since: 1996 1965
69th Warmest Warmest since: 1998 1998
Aug–Sep 1999
2-Month
81.94°F
(27.74°C)
81.48°F
(27.49°C)
0.46°F
(0.25°C)
73rd Coolest Coolest since: 1997 1965
55th Warmest Warmest since: 1998 1998
Jul–Sep 1999
3-Month
83.58°F
(28.66°C)
83.21°F
(28.45°C)
0.37°F
(0.21°C)
74th Coolest Coolest since: 1997 1912
54th Warmest Warmest since: 1998 1936
Jun–Sep 1999
4-Month
82.78°F
(28.21°C)
82.75°F
(28.19°C)
0.03°F
(0.02°C)
59th Coolest Coolest since: 1997 1915
69th Warmest Warmest since: 1998 1936
May–Sep 1999
5-Month
80.77°F
(27.09°C)
80.79°F
(27.11°C)
-0.02°F
(-0.02°C)
56th Coolest Coolest since: 1997 1915
72nd Warmest Warmest since: 1998 1936
Ties: 1983
Apr–Sep 1999
6-Month
77.88°F
(25.49°C)
77.90°F
(25.50°C)
-0.02°F
(-0.01°C)
52nd Coolest Coolest since: 1997 1907
76th Warmest Warmest since: 1998 2012
Ties: 1941, 1989
Mar–Sep 1999
7-Month
74.57°F
(23.65°C)
74.34°F
(23.52°C)
0.23°F
(0.13°C)
68th Coolest Coolest since: 1997 1912
60th Warmest Warmest since: 1998 2012
Ties: 1966
Feb–Sep 1999
8-Month
71.60°F
(22.00°C)
70.66°F
(21.48°C)
0.94°F
(0.52°C)
94th Coolest Coolest since: 1997 1912
34th Warmest Warmest since: 1998 2012
Ties: 1963
Jan–Sep 1999
9-Month
68.58°F
(20.32°C)
67.30°F
(19.61°C)
1.28°F
(0.71°C)
102nd Coolest Coolest since: 1997 1912
26th Warmest Warmest since: 1998 2012
Dec 1998–Sep 1999
10-Month
66.32°F
(19.07°C)
64.85°F
(18.25°C)
1.47°F
(0.82°C)
109th Coolest Coolest since: 1998 1912
18th Warmest Warmest since: 1981 2012
Nov 1998–Sep 1999
11-Month
65.27°F
(18.48°C)
63.76°F
(17.64°C)
1.51°F
(0.84°C)
113th Coolest Coolest since: 1998 1912
14th Warmest Warmest since: 1954 2012
Oct 1998–Sep 1999
12-Month
65.41°F
(18.56°C)
64.01°F
(17.78°C)
1.40°F
(0.78°C)
112th Coolest Coolest since: 1998 1912
15th Warmest Warmest since: 1954 2012
Apr 1998–Sep 1999
18-Month
70.04°F
(21.13°C)
68.63°F
(20.35°C)
1.41°F
(0.78°C)
114th Coolest Coolest since: 1998 1912
13th Warmest Warmest since: 1954 2012
Ties: 1935
Oct 1997–Sep 1999
24-Month
65.20°F
(18.44°C)
63.99°F
(17.77°C)
1.21°F
(0.67°C)
110th Coolest Coolest since: 1998 1913
16th Warmest Warmest since: 1955 2017
Oct 1996–Sep 1999
36-Month
64.68°F
(18.16°C)
63.98°F
(17.77°C)
0.70°F
(0.39°C)
92nd Coolest Coolest since: 1998 1917
33rd Warmest Warmest since: 1992 2018
Oct 1995–Sep 1999
48-Month
64.54°F
(18.08°C)
63.96°F
(17.76°C)
0.58°F
(0.32°C)
88th Coolest Coolest since: 1998 1915
36th Warmest Warmest since: 1992 2018
Ties: 1933, 1940
Oct 1994–Sep 1999
60-Month
64.51°F
(18.06°C)
63.96°F
(17.76°C)
0.55°F
(0.30°C)
88th Coolest Coolest since: 1998 1907
35th Warmest Warmest since: 1992 2016
Ties: 1939

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published October 2021, retrieved on October 18, 2021 from https://www.ncdc.noaa.gov/cag/