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.

Minimum 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
50.74°F
(10.41°C)
51.90°F
(11.06°C)
-1.16°F
(-0.65°C)
21st Coolest Coolest since: 1993 1918
107th Warmest Warmest since: 1998 2019
Aug–Sep 1999
2-Month
55.31°F
(12.95°C)
55.48°F
(13.04°C)
-0.17°F
(-0.09°C)
42nd Coolest Coolest since: 1993 1974
86th Warmest Warmest since: 1998 2019
Jul–Sep 1999
3-Month
57.45°F
(14.14°C)
57.16°F
(13.98°C)
0.29°F
(0.16°C)
66th Coolest Coolest since: 1996 1924
62nd Warmest Warmest since: 1998 1998
Ties: 1994
Jun–Sep 1999
4-Month
57.15°F
(13.97°C)
56.78°F
(13.77°C)
0.37°F
(0.20°C)
73rd Coolest Coolest since: 1993 1903
55th Warmest Warmest since: 1998 2021
May–Sep 1999
5-Month
55.19°F
(12.88°C)
54.91°F
(12.73°C)
0.28°F
(0.15°C)
66th Coolest Coolest since: 1993 1907, 1924
62nd Warmest Warmest since: 1998 2018
Apr–Sep 1999
6-Month
52.60°F
(11.44°C)
52.19°F
(11.22°C)
0.41°F
(0.22°C)
75th Coolest Coolest since: 1997 1907
53rd Warmest Warmest since: 1998 2018
Ties: 1958
Mar–Sep 1999
7-Month
49.49°F
(9.72°C)
49.02°F
(9.46°C)
0.47°F
(0.26°C)
85th Coolest Coolest since: 1997 1917
43rd Warmest Warmest since: 1998 2012
Feb–Sep 1999
8-Month
46.84°F
(8.24°C)
45.75°F
(7.64°C)
1.09°F
(0.60°C)
102nd Coolest Coolest since: 1997 1917
26th Warmest Warmest since: 1998 2012
Ties: 1981
Jan–Sep 1999
9-Month
44.20°F
(6.78°C)
42.86°F
(6.03°C)
1.34°F
(0.75°C)
107th Coolest Coolest since: 1997 1917
21st Warmest Warmest since: 1998 2012
Ties: 1992
Dec 1998–Sep 1999
10-Month
42.29°F
(5.72°C)
40.84°F
(4.91°C)
1.45°F
(0.81°C)
109th Coolest Coolest since: 1997 1917
18th Warmest Warmest since: 1998 2016
Nov 1998–Sep 1999
11-Month
41.63°F
(5.35°C)
39.91°F
(4.39°C)
1.72°F
(0.96°C)
113th Coolest Coolest since: 1997 1917
14th Warmest Warmest since: 1998 2016
Oct 1998–Sep 1999
12-Month
41.77°F
(5.43°C)
40.04°F
(4.47°C)
1.73°F
(0.96°C)
115th Coolest Coolest since: 1997 1917
12th Warmest Warmest since: 1998 2016
Apr 1998–Sep 1999
18-Month
45.87°F
(7.71°C)
44.10°F
(6.72°C)
1.77°F
(0.99°C)
120th Coolest Coolest since: 1998 1917
7th Warmest Warmest to Date 2016
Oct 1997–Sep 1999
24-Month
42.05°F
(5.58°C)
40.04°F
(4.47°C)
2.01°F
(1.11°C)
119th Coolest Coolest since: 1998 1918
7th Warmest Warmest to Date 2017
Oct 1996–Sep 1999
36-Month
41.52°F
(5.29°C)
40.02°F
(4.46°C)
1.50°F
(0.83°C)
112th Coolest Coolest since: 1998 1918
13th Warmest Warmest to Date 2017, 2018
Oct 1995–Sep 1999
48-Month
41.17°F
(5.09°C)
40.01°F
(4.45°C)
1.16°F
(0.64°C)
103rd Coolest Coolest since: 1998 1918
21st Warmest Warmest to Date 2018
Oct 1994–Sep 1999
60-Month
41.22°F
(5.12°C)
40.00°F
(4.44°C)
1.22°F
(0.68°C)
103rd Coolest Coolest since: 1998 1920
20th Warmest Warmest to Date 2019, 2020
Ties: 2012

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published November 2021, retrieved on November 30, 2021 from https://www.ncdc.noaa.gov/cag/