Climate at a Glance

City 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 August 2021. For more information, please see Climatological Rankings.


Wilmington, Delaware

Average Temperature Rankings, May 1999

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  • Record Warmest
Period Value 1981-2010
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
May 1999
1-Month
63.4°F
(17.4°C)
62.8°F
(17.1°C)
0.6°F
(0.3°C)
45th Coolest Coolest since: 1997 1967
30th Warmest Warmest since: 1998 1991, 2004
Ties: 2009
Apr–May 1999
2-Month
58.2°F
(14.6°C)
58.0°F
(14.4°C)
0.2°F
(0.2°C)
44th Coolest Coolest since: 1997 1967
31st Warmest Warmest since: 1998 2019
Ties: 2000
Mar–May 1999
3-Month
52.9°F
(11.6°C)
53.0°F
(11.7°C)
-0.1°F
(-0.1°C)
40th Coolest Coolest since: 1997 1950
33rd Warmest Warmest since: 1998 2012
Feb–May 1999
4-Month
49.0°F
(9.4°C)
48.6°F
(9.2°C)
0.4°F
(0.2°C)
46th Coolest Coolest since: 1997 1978
27th Warmest Warmest since: 1998 2012
Jan–May 1999
5-Month
46.2°F
(7.9°C)
45.3°F
(7.4°C)
0.9°F
(0.5°C)
55th Coolest Coolest since: 1997 1978
18th Warmest Warmest since: 1998 2012
Dec 1998–May 1999
6-Month
45.4°F
(7.4°C)
43.9°F
(6.6°C)
1.5°F
(0.8°C)
60th Coolest Coolest since: 1997 1978
12th Warmest Warmest since: 1998 2012
Ties: 2000
Nov 1998–May 1999
7-Month
45.7°F
(7.6°C)
44.3°F
(6.8°C)
1.4°F
(0.8°C)
60th Coolest Coolest since: 1997 1978
11th Warmest Warmest since: 1998 2012
Ties: 1949
Oct 1998–May 1999
8-Month
47.2°F
(8.4°C)
45.8°F
(7.7°C)
1.4°F
(0.7°C)
59th Coolest Coolest since: 1997 1978
12th Warmest Warmest since: 1998 2012
Sep 1998–May 1999
9-Month
49.8°F
(9.9°C)
48.1°F
(8.9°C)
1.7°F
(1.0°C)
61st Coolest Coolest since: 1997 1978
10th Warmest Warmest since: 1998 2012
Ties: 2019
Aug 1998–May 1999
10-Month
52.4°F
(11.3°C)
50.8°F
(10.4°C)
1.6°F
(0.9°C)
61st Coolest Coolest since: 1998 1963
10th Warmest Warmest since: 1998 2012
Ties: 1998, 2021
Jul 1998–May 1999
11-Month
54.5°F
(12.5°C)
53.2°F
(11.8°C)
1.3°F
(0.7°C)
58th Coolest Coolest since: 1997 1963
13th Warmest Warmest since: 1998 2012
Jun 1998–May 1999
12-Month
55.9°F
(13.3°C)
54.8°F
(12.7°C)
1.1°F
(0.6°C)
59th Coolest Coolest since: 1998 1963
12th Warmest Warmest since: 1998 2012
Ties: 1998
Dec 1997–May 1999
18-Month
53.1°F
(11.7°C)
51.1°F
(10.6°C)
2.0°F
(1.1°C)
65th Coolest Coolest since: 1998 1979
3rd Warmest Warmest to Date 2017
Ties: 2012, 2021
Jun 1997–May 1999
24-Month
55.9°F
(13.3°C)
54.8°F
(12.7°C)
1.1°F
(0.6°C)
58th Coolest Coolest since: 1998 1978
9th Warmest Warmest to Date 2017
Ties: 2008
Jun 1996–May 1999
36-Month
55.3°F
(12.9°C)
54.8°F
(12.7°C)
0.5°F
(0.2°C)
50th Coolest Coolest since: 1998 1979
13th Warmest Warmest since: 1992 2018
Ties: 1992, 2011
Jun 1995–May 1999
48-Month
55.0°F
(12.8°C)
54.8°F
(12.7°C)
0.2°F
(0.1°C)
44th Coolest Coolest since: 1998 1966
15th Warmest Warmest to Date 2019, 2020
Ties: 2003
Jun 1994–May 1999
60-Month
55.1°F
(12.8°C)
54.7°F
(12.6°C)
0.4°F
(0.2°C)
42nd Coolest Coolest since: 1998 1967
14th Warmest Warmest to Date 2020
Ties: 2001

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: City Time Series, published September 2021, retrieved on September 28, 2021 from https://www.ncdc.noaa.gov/cag/