Climate at a Glance

Statewide 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 2019. For more information, please see Climatological Rankings.


Delaware

Average Temperature Rankings, December 1999

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2018)
Warmest/Coolest
Since
Record
December 1999
1-Month
40.5°F
(4.7°C)
36.2°F
(2.3°C)
4.3°F
(2.4°C)
104th Coolest Coolest since: 1997 1989
21st Warmest Warmest since: 1998 2015
Nov–Dec 1999
2-Month
46.0°F
(7.8°C)
41.0°F
(5.0°C)
5.0°F
(2.8°C)
118th Coolest Coolest since: 1998 1917
7th Warmest Warmest since: 1994 2015
Oct–Dec 1999
3-Month
49.3°F
(9.6°C)
46.1°F
(7.8°C)
3.2°F
(1.8°C)
113th Coolest Coolest since: 1998 1917
12th Warmest Warmest since: 1994 2015
Ties: 1982, 1994
Sep–Dec 1999
4-Month
54.1°F
(12.3°C)
51.4°F
(10.8°C)
2.7°F
(1.5°C)
112th Coolest Coolest since: 1997 1917
13th Warmest Warmest since: 1998 2015
Ties: 2005
Aug–Dec 1999
5-Month
58.5°F
(14.7°C)
55.9°F
(13.3°C)
2.6°F
(1.4°C)
113th Coolest Coolest since: 1997 1917
12th Warmest Warmest since: 1998 2015
Ties: 1971, 1990, 2012
Jul–Dec 1999
6-Month
62.0°F
(16.7°C)
59.2°F
(15.1°C)
2.8°F
(1.6°C)
116th Coolest Coolest since: 1998 1917
9th Warmest Warmest since: 1931 2015
Ties: 1900, 2005
Jun–Dec 1999
7-Month
63.3°F
(17.4°C)
60.8°F
(16.0°C)
2.5°F
(1.4°C)
114th Coolest Coolest since: 1998 1917
11th Warmest Warmest since: 1931 2015
Ties: 1900, 2001
May–Dec 1999
8-Month
63.3°F
(17.4°C)
61.0°F
(16.1°C)
2.3°F
(1.3°C)
115th Coolest Coolest since: 1998 1917
10th Warmest Warmest since: 1931 2015
Ties: 2001
Apr–Dec 1999
9-Month
62.2°F
(16.8°C)
60.0°F
(15.6°C)
2.2°F
(1.2°C)
113th Coolest Coolest since: 1997 1917
12th Warmest Warmest since: 1998 2015
Ties: 2001
Mar–Dec 1999
10-Month
60.2°F
(15.7°C)
58.3°F
(14.6°C)
1.9°F
(1.1°C)
110th Coolest Coolest since: 1997 1917
15th Warmest Warmest since: 1998 2012
Ties: 1921, 1959
Feb–Dec 1999
11-Month
58.2°F
(14.6°C)
56.1°F
(13.4°C)
2.1°F
(1.2°C)
111th Coolest Coolest since: 1997 1917
14th Warmest Warmest since: 1998 2012
Ties: 2001
Jan–Dec 1999
12-Month
56.5°F
(13.6°C)
54.2°F
(12.3°C)
2.3°F
(1.3°C)
113th Coolest Coolest since: 1997 1904
12th Warmest Warmest since: 1998 2012
Jul 1998–Dec 1999
18-Month
58.2°F
(14.6°C)
55.9°F
(13.3°C)
2.3°F
(1.3°C)
115th Coolest Coolest since: 1998 1904
9th Warmest Warmest since: 1991 2012
Ties: 2007, 2008
Jan 1998–Dec 1999
24-Month
57.0°F
(13.9°C)
54.2°F
(12.3°C)
2.8°F
(1.6°C)
118th Coolest Coolest since: 1998 1905
6th Warmest Warmest since: 1991 2012
Ties: 2011
Jan 1997–Dec 1999
36-Month
56.2°F
(13.4°C)
54.1°F
(12.3°C)
2.1°F
(1.1°C)
113th Coolest Coolest since: 1998 1905
10th Warmest Warmest to Date 2012
Ties: 2000, 2016
Jan 1996–Dec 1999
48-Month
55.7°F
(13.2°C)
54.2°F
(12.3°C)
1.5°F
(0.9°C)
103rd Coolest Coolest since: 1998 1907
19th Warmest Warmest since: 1993 2013, 2018
Ties: 1993
Jan 1995–Dec 1999
60-Month
55.6°F
(13.1°C)
54.2°F
(12.3°C)
1.4°F
(0.8°C)
102nd Coolest Coolest since: 1998 1905
19th Warmest Warmest since: 1994 2012
Ties: 1994

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 14, 2019 from https://www.ncdc.noaa.gov/cag/